{"title":"Fan and limit cross reference","description":"\u003ch1\u003eFan and Limit Cross Reference Guide\u003c\/h1\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Fan_and_Limit_Cross_Page_1_1024x1024.jpg?v=1793742131\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Fan_and_Limit_Cross_Page_2_1024x1024.jpg?v=1793742158\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Fan_and_Limit_Cross_Page_3_1024x1024.jpg?v=1793742175\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Fan_and_Limit_Cross_Page_4_1024x1024.jpg?v=1793742190\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Fan_and_Limit_Cross_Page_5_1024x1024.jpg?v=1793742205\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Fan_and_Limit_Cross_Page_6_1024x1024.jpg?v=1793742219\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Fan_and_Limit_Cross_Page_7_1024x1024.jpg?v=1793742236\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","products":[{"product_id":"l170f-duo-therm-manual-limit-3-6748","title":"3L02-200 White Rodgers L170F Manual Reset Limit Switch","description":"\u003ch1\u003e3L02-200 White Rodgers L170F Manual Reset Limit Switch\u003c\/h1\u003e\n\u003cp\u003eThe Duo-Therm manual limit 3-6748, L170 is no longer made you will receive a 3L02-200 60T15 manual limit switch.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eControls, Temperature, 200 degrees F Fixed Cut-out Temperature, Open on Rise Switch Action, Snap Disc Manual Reset Limit Switch (60T15-330538)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eL170F. Contacts open at 170F and can only be reset if the button is pushed. Replaces Duo-Therm 3-2072, \u003cspan\u003e3-14548-002, 3-8459, 20611L6-192,\u003c\/span\u003e 3-6748 size 60T14 and 3-8459. Klixon. \u003c\/p\u003e\n\u003cp\u003eOther markings on the switch are: F77-6355, 330535 \u0026amp; A0844.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis is also the replacement for the L160 manual limit switch 3-5155 or 334534, F77-6354, A1446 size 60T15.  4601-3663. 3-6748. Manual reset limit switch\u003c\/span\u003e\u003c\/p\u003e","brand":"Quinn","offers":[{"title":"Default Title","offer_id":13004496259,"sku":"3L02-200","price":18.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/products\/yhst-130159302524877_2272_105727169.jpeg?v=1566073507"},{"product_id":"3f01-140-copeland-comfort-control-white-rodgers-f140-20f-fan-switch","title":"3F01-140 Copeland Comfort Control (White Rodgers) F140-20F Fan Switch","description":"\u003ch1\u003e3F01-140 Copeland Comfort Control (White Rodgers) F140-20F Fan Switch\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3F01-140 Snap Disc Fan Switch (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature control designed to manage blower fan operation in furnaces, air handlers, and HVAC equipment. Featuring a \u003cstrong\u003e140°F fixed cut-in temperature\u003c\/strong\u003e and a \u003cstrong\u003e20°F differential\u003c\/strong\u003e, this \u003cstrong\u003eclose-on-rise\u003c\/strong\u003e switch automatically activates the blower when operating temperatures are reached and shuts the fan off as the system cools, helping improve comfort, efficiency, and equipment performance.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3F01-140\u003c\/li\u003e\n\u003cli\u003e3F01140\u003c\/li\u003e\n\u003cli\u003eF140-20F\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3F01-140\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3F01-140\u003c\/li\u003e\n\u003cli\u003e60T12 Series Fan Switch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3F01-140\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eNordyne\u003c\/li\u003e\n\u003cli\u003eIntertherm\u003c\/li\u003e\n\u003cli\u003eMiller\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in heating and HVAC equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eControl blower fan operation\u003c\/li\u003e\n\u003cli\u003eClose contacts at 140°F on temperature rise\u003c\/li\u003e\n\u003cli\u003eOpen contacts after cooling by approximately 20°F\u003c\/li\u003e\n\u003cli\u003ePrevent circulation of cool air during startup\u003c\/li\u003e\n\u003cli\u003eImprove heating efficiency and comfort\u003c\/li\u003e\n\u003cli\u003eAutomate blower fan cycling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFan Switch\u003c\/li\u003e\n\u003cli\u003eFan \u0026amp; Limit Control\u003c\/li\u003e\n\u003cli\u003eHigh Limit Switch\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eBlower Motor\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eThermostat\u003c\/li\u003e\n\u003cli\u003eTemperature Controls\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3F01-140 is an \u003cstrong\u003eautomatic reset, close-on-rise snap disc fan switch\u003c\/strong\u003e. Contacts remain open during lower temperatures and close when the sensing surface reaches \u003cstrong\u003e140°F\u003c\/strong\u003e, energizing the blower circuit. As temperatures decrease approximately \u003cstrong\u003e20°F\u003c\/strong\u003e, the contacts automatically reopen, turning the blower off.\u003c\/p\u003e\n\u003cp\u003eAlways verify temperature ratings, switch action, terminal configuration, and mounting style before replacement. Improper fan switch ratings can affect blower timing, homeowner comfort, and overall furnace efficiency.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower fan will not start\u003c\/li\u003e\n\u003cli\u003eBlower runs continuously\u003c\/li\u003e\n\u003cli\u003eDelayed blower operation\u003c\/li\u003e\n\u003cli\u003ePoor warm-air delivery\u003c\/li\u003e\n\u003cli\u003eFurnace overheating\u003c\/li\u003e\n\u003cli\u003eShort cycling blower motor\u003c\/li\u003e\n\u003cli\u003eIntermittent fan operation\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify replacement temperature ratings match the original switch.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \u003cstrong\u003eClose on Rise\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eMount securely to the original sensing surface.\u003c\/li\u003e\n\u003cli\u003eInspect terminals for corrosion or heat damage.\u003c\/li\u003e\n\u003cli\u003eVerify blower motor operation before replacing the switch.\u003c\/li\u003e\n\u003cli\u003eConfirm proper fan-on and fan-off temperatures after installation.\u003c\/li\u003e\n\u003cli\u003eRun a complete heating cycle to verify operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower motor amperage\u003c\/li\u003e\n\u003cli\u003eBlower relay condition\u003c\/li\u003e\n\u003cli\u003eAir filter restriction\u003c\/li\u003e\n\u003cli\u003eHeat exchanger temperature\u003c\/li\u003e\n\u003cli\u003eWiring terminals\u003c\/li\u003e\n\u003cli\u003eFurnace control board\u003c\/li\u003e\n\u003cli\u003eTemperature rise across furnace\u003c\/li\u003e\n\u003cli\u003eSupply and return airflow\u003c\/li\u003e\n\u003cli\u003eBlower wheel cleanliness\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":13005691075,"sku":"3F01-140","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/products\/yhst-130159302524877_2272_7457373.jpeg?v=1566073385"},{"product_id":"f110-20f-white-rodgers-fan-switch-3f01-110","title":"3F01-110 Copeland Comfort Control (White Rodgers) Fan Switch F110-20F","description":"\u003ch1\u003e3F01-110 Copeland Comfort Control (White Rodgers) Fan Switch F110-20F\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3F01-110 Snap Disc Fan Switch (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature control designed to regulate blower fan operation in furnaces, air handlers, and HVAC equipment. Featuring a \u003cstrong\u003e110°F fixed cut-in temperature\u003c\/strong\u003e and a \u003cstrong\u003e20°F differential\u003c\/strong\u003e, this \u003cstrong\u003eclose-on-rise\u003c\/strong\u003e temperature switch automatically energizes the blower when operating temperatures are reached and turns the fan off as the system cools.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3F01-110\u003c\/li\u003e\n\u003cli\u003e3F01110\u003c\/li\u003e\n\u003cli\u003eF110-20F\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3F01-110\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3F01-110\u003c\/li\u003e\n\u003cli\u003e60T12 Series Fan Switch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3F01-110\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eNordyne\u003c\/li\u003e\n\u003cli\u003eIntertherm\u003c\/li\u003e\n\u003cli\u003eMiller\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in HVAC and heating equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eControl blower fan operation\u003c\/li\u003e\n\u003cli\u003eClose contacts at 110°F on temperature rise\u003c\/li\u003e\n\u003cli\u003eOpen contacts after cooling by approximately 20°F\u003c\/li\u003e\n\u003cli\u003ePrevent circulation of cold air during furnace startup\u003c\/li\u003e\n\u003cli\u003eImprove heating efficiency and comfort\u003c\/li\u003e\n\u003cli\u003eAutomate blower fan cycling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFan Switch\u003c\/li\u003e\n\u003cli\u003eFan \u0026amp; Limit Control\u003c\/li\u003e\n\u003cli\u003eHigh Limit Switch\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eBlower Motor\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eThermostat\u003c\/li\u003e\n\u003cli\u003eTemperature Safety Controls\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3F01-110 is an \u003cstrong\u003eautomatic reset, close-on-rise snap disc fan switch\u003c\/strong\u003e. The contacts remain open during lower temperatures and close when the sensing surface reaches \u003cstrong\u003e110°F\u003c\/strong\u003e, energizing the blower circuit. As temperature drops approximately \u003cstrong\u003e20°F\u003c\/strong\u003e, the contacts reopen, shutting off the blower.\u003c\/p\u003e\n\u003cp\u003eAlways verify temperature ratings, switch action, terminal configuration, and mounting style before replacement. A failed fan switch can cause delayed blower operation, continuous blower operation, or overheating conditions.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower motor will not start\u003c\/li\u003e\n\u003cli\u003eBlower runs continuously\u003c\/li\u003e\n\u003cli\u003eDelayed blower operation\u003c\/li\u003e\n\u003cli\u003eReduced heating efficiency\u003c\/li\u003e\n\u003cli\u003eFurnace overheating\u003c\/li\u003e\n\u003cli\u003eShort cycling blower motor\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eUneven comfort levels\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify the replacement matches the original temperature rating.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \"Close on Rise.\"\u003c\/li\u003e\n\u003cli\u003eMount securely on the original sensing surface.\u003c\/li\u003e\n\u003cli\u003eInspect wiring terminals for corrosion or heat damage.\u003c\/li\u003e\n\u003cli\u003eCheck blower motor operation before replacement.\u003c\/li\u003e\n\u003cli\u003eVerify fan-on and fan-off temperatures after installation.\u003c\/li\u003e\n\u003cli\u003eTest a complete heating cycle before returning equipment to service.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower motor amperage\u003c\/li\u003e\n\u003cli\u003eAir filter condition\u003c\/li\u003e\n\u003cli\u003eHeat exchanger temperature\u003c\/li\u003e\n\u003cli\u003eWiring terminals\u003c\/li\u003e\n\u003cli\u003eBlower relay operation\u003c\/li\u003e\n\u003cli\u003eFurnace control board\u003c\/li\u003e\n\u003cli\u003eTemperature rise across furnace\u003c\/li\u003e\n\u003cli\u003eSupply and return airflow\u003c\/li\u003e\n\u003cli\u003eBlower wheel cleanliness\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eControls, Temperature, 110 degrees F Fixed Cut-in Temperature, 90 degrees F Fixed Cut-out Temperature, Close on Rise Switch Action, Snap Disc Auto Reset Fan Switch (60T12-610044)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":13270038339,"sku":"3F01-110","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot_2026-11-02_204135.png?v=1793677310"},{"product_id":"3f01-120-copeland-comfort-control-white-rodgers-fan-switch-f120-10f","title":"3F01-120 Copeland Comfort Control (White Rodgers) Fan Switch F120-10F","description":"\u003ch1\u003e3F01-120 Copeland Comfort Control (White Rodgers) Fan Switch F120-10F \u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3F01-120 Snap Disc Fan Switch (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature control designed to regulate blower fan operation in furnaces, air handlers, and HVAC equipment. Featuring a \u003cstrong\u003e120°F fixed cut-in temperature\u003c\/strong\u003e and a \u003cstrong\u003e10°F differential\u003c\/strong\u003e, this \u003cstrong\u003eclose-on-rise\u003c\/strong\u003e switch automatically energizes the blower when operating temperatures are reached and shuts the fan off as the system cools, improving comfort and system efficiency.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3F01-120\u003c\/li\u003e\n\u003cli\u003e3F01120\u003c\/li\u003e\n\u003cli\u003eF120-10F\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3F01-120\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3F01-120\u003c\/li\u003e\n\u003cli\u003e60T12 Series Fan Switch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3F01-120\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eNordyne\u003c\/li\u003e\n\u003cli\u003eIntertherm\u003c\/li\u003e\n\u003cli\u003eMiller\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in heating and HVAC equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eControl blower fan operation\u003c\/li\u003e\n\u003cli\u003eClose contacts at 120°F on temperature rise\u003c\/li\u003e\n\u003cli\u003eOpen contacts after cooling by approximately 10°F\u003c\/li\u003e\n\u003cli\u003ePrevent circulation of cold air during startup\u003c\/li\u003e\n\u003cli\u003eImprove comfort and heating efficiency\u003c\/li\u003e\n\u003cli\u003eProvide automatic blower fan cycling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFan Switch\u003c\/li\u003e\n\u003cli\u003eFan \u0026amp; Limit Control\u003c\/li\u003e\n\u003cli\u003eHigh Limit Switch\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eBlower Motor\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eThermostat\u003c\/li\u003e\n\u003cli\u003eTemperature Controls\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3F01-120 is an \u003cstrong\u003eautomatic reset, close-on-rise snap disc fan switch\u003c\/strong\u003e. The contacts remain open during normal temperatures and close when the sensing surface reaches \u003cstrong\u003e120°F\u003c\/strong\u003e, energizing the blower circuit. As temperature falls approximately \u003cstrong\u003e10°F\u003c\/strong\u003e, the contacts automatically reopen, shutting off the blower.\u003c\/p\u003e\n\u003cp\u003eAlways verify temperature ratings, switch action, mounting configuration, and wiring terminals match the original part before replacement.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower fan will not start\u003c\/li\u003e\n\u003cli\u003eBlower fan runs continuously\u003c\/li\u003e\n\u003cli\u003eDelayed blower operation\u003c\/li\u003e\n\u003cli\u003ePoor airflow during heating\u003c\/li\u003e\n\u003cli\u003eFurnace overheating\u003c\/li\u003e\n\u003cli\u003eShort cycling blower motor\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eUneven heating performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify replacement temperature ratings match the original.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \"Close on Rise.\"\u003c\/li\u003e\n\u003cli\u003eMount securely against the original sensing surface.\u003c\/li\u003e\n\u003cli\u003eInspect wire terminals for corrosion or overheating.\u003c\/li\u003e\n\u003cli\u003eTest blower motor operation before condemning the switch.\u003c\/li\u003e\n\u003cli\u003eVerify fan-on and fan-off temperatures after installation.\u003c\/li\u003e\n\u003cli\u003eRun a complete heating cycle to confirm proper operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower motor operation\u003c\/li\u003e\n\u003cli\u003eBlower relay condition\u003c\/li\u003e\n\u003cli\u003eAir filter restriction\u003c\/li\u003e\n\u003cli\u003eFurnace temperature rise\u003c\/li\u003e\n\u003cli\u003eHeat exchanger condition\u003c\/li\u003e\n\u003cli\u003eWiring terminals\u003c\/li\u003e\n\u003cli\u003eFurnace control board\u003c\/li\u003e\n\u003cli\u003eSupply and return airflow\u003c\/li\u003e\n\u003cli\u003eBlower wheel cleanliness\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003eFan control switch. F120-10F. Size T-O-D60T12. Switch closes at 120 degrees F and opens back up at 110 degrees F. Supco \u003c\/p\u003e\n\u003ch3 id=\"part-num\"\u003e Replaces SHF120\u003c\/h3\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":13291404611,"sku":"3F01-120","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot_2026-11-02_205104.png?v=1793677878"},{"product_id":"bvd0218-00-ventline-12v-replacement-motor","title":"BVD0218-00 Ventline 12V DC replacement motor RV","description":"\u003ch1\u003eBVD0218-00 Ventline 12V DC replacement motor RV\u003c\/h1\u003e\n\u003cp\u003eVentline 12 volt motor includes bracket and wire. A replacement for VD0218-00, BVC0468-01 VA0164 \u0026amp; VC0468 found in roof vents, fans \u0026amp; range hoods.\u003cbr\u003e\u003cbr\u003eMotor measures 1.5\" long x 1-1\/8\" diameter. Shaft measures 1\/2\" long x 1\/16\" diameter.\u003cbr\u003e\u003cbr\u003eMarkings stamped on side of motor are HC385MG, VD218105A, 13.6V, 1.2A and 3L1243656. Since this is a replacement motor, these markings may differ from the markings on your original motor.\u003cbr\u003e\u003cbr\u003eUsed in PC, PH, PR \u0026amp; P1-5 series range hoods and the V-2100 Ventadome, among others.\u003cbr\u003e\u003cbr\u003e\u003ca class=\"articles\" href=\"http:\/\/www.mobilehomerepair.com\/media\/img\/BVD0218-000.pdf\"\u003eView instruction sheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Quinn","offers":[{"title":"Default Title","offer_id":13359412995,"sku":"21-BVD0218-00","price":52.43,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/products\/yhst-130159302524877_2269_21301536.jpeg?v=1566072664"},{"product_id":"3l01-350-copeland-comfort-control-white-rodgers-l350-40","title":"3L01-350 Copeland Comfort Control (White Rodgers) L350-40","description":"\u003ch1\u003e\u003cspan itemprop=\"mpn\"\u003e3L01-350 Limit Switch Copeland Comfort Control (White Rodgers) L350-40\u003c\/span\u003e\u003c\/h1\u003e\n\u003ch3\u003e\u003cspan itemprop=\"mpn\"\u003e \u003cspan style=\"background-color: rgb(255, 255, 0);\"\u003eNormal Stock Item\u003c\/span\u003e\u003cmeta content=\"text\/html; charset=us-ascii\" http-equiv=\"Content-Type\"\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan itemprop=\"mpn\"\u003e\u003cspan style=\"background-color: rgb(255, 255, 0);\"\u003e1 year warranty on everything we sell\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3L01-350 Limit Switch\u003c\/strong\u003e by \u003cstrong\u003eCopeland Comfort Control \/ White-Rodgers\u003c\/strong\u003e is an automatic reset temperature limit switch designed to protect HVAC and heating equipment from excessive temperatures. Rated at \u003cstrong\u003eL350-40\u003c\/strong\u003e, this safety control opens at \u003cstrong\u003e350°F\u003c\/strong\u003e and automatically resets after the temperature drops by 40°F, helping prevent overheating damage to critical system components.\u003c\/p\u003e\n\u003cp\u003eCommonly used in furnaces, unit heaters, blower systems, and other HVAC applications requiring reliable high-temperature protection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eReplaces\u003c\/strong\u003e 610068, 6100680, 626194, 6261940, 626194R\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine White-Rodgers \/ Copeland Comfort Control component\u003c\/li\u003e\n\u003cli\u003eAutomatic reset high-limit switch\u003c\/li\u003e\n\u003cli\u003eOpens at 350°F\u003c\/li\u003e\n\u003cli\u003e40°F differential reset (L350-40)\u003c\/li\u003e\n\u003cli\u003eProtects equipment from overheating\u003c\/li\u003e\n\u003cli\u003eReliable snap-disc temperature sensing\u003c\/li\u003e\n\u003cli\u003eDurable construction for HVAC applications\u003c\/li\u003e\n\u003cli\u003eOEM-quality replacement part\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePart Number: \u003cstrong\u003e3L01-350\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eManufacturer: \u003cstrong\u003eCopeland Comfort Control \/ White-Rodgers\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eProduct Type: \u003cstrong\u003eLimit Switch\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTemperature Rating: \u003cstrong\u003eL350-40\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eOpen Temperature: \u003cstrong\u003e350°F\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eReset Differential: \u003cstrong\u003e40°F\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eReset Type: \u003cstrong\u003eAutomatic Reset\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eApplication: Furnaces, unit heaters, HVAC equipment, and temperature safety controls\u003c\/li\u003e\n\u003cli\u003eVerify temperature rating and mounting configuration before ordering\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCross Reference\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e3L01-350\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3L01-350\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3L01-350\u003c\/li\u003e\n\u003cli\u003eL350-40 Limit Switch\u003c\/li\u003e\n\u003cli\u003eFurnace Limit Switch\u003c\/li\u003e\n\u003cli\u003eHVAC High Limit Switch\u003c\/li\u003e\n\u003cli\u003eAutomatic Reset Limit Switch\u003c\/li\u003e\n\u003cli\u003eTemperature Safety Switch\u003c\/li\u003e\n\u003cli\u003eSnap Disc Limit Control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003eFixed Settings \u003cbr\u003eOpen: 350 Degrees F \u003cbr\u003eClose: 310 Degrees F \u003cbr\u003eBody size: 60T11. Also known as part # 610068, 6100680, 626194, 6261940, 626194R.\u003c\/p\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":13441076803,"sku":"3L01-350","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/products\/l350-40-limit-switch-3l01-350-3.jpg?v=1739538311"},{"product_id":"l190-20f-reem-3-inch-limit-switch-47-25350-01","title":"47-25350-01 Rheem L190-20F 3-inch limit switch","description":"\u003ch1\u003e47-25350-01 Rheem L190-20F 3-inch limit switch\u003c\/h1\u003e\n\u003ch2\u003e\u003cstrong\u003e47-25350-01 Obsolete Replaced by 3L09-24\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e3L09-24 Limit Switch – 190°F Open \/ 170°F Close – Auto Reset, 3.12\" Insertion\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eUpgrade your HVAC system with the reliable 3L09-24 limit switch, designed for precise temperature control and dependable performance. Featuring a fixed open temperature of 190°F and close temperature of 170°F, this auto-reset switch ensures safe operation in heating systems. With a 3.12\" insertion length and board-mounted ½\" bimetal disc, it’s ideal for a wide range of furnace and mobile home applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eSwitch Action:\u003c\/strong\u003e Open on rise\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eReset Type:\u003c\/strong\u003e Auto\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eInsertion Length:\u003c\/strong\u003e 3.12\"\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eMounting:\u003c\/strong\u003e Board-mounted\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eTabs:\u003c\/strong\u003e 3\/16\" male wire tabs\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.11 lb\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 5.4 × 3.6 × 2.65 in\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Mexico\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch3\u003e🔄 Compatibility \u0026amp; Cross-Reference\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThe 3L09-24 replaces obsolete Rheem part \u003cstrong\u003e47-25350-01\u003c\/strong\u003e and is commonly used across brands like:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eRheem\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eRuud\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eWeatherking\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eNordyne\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eColeman\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eIntertherm\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eMiller\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eIt’s a direct replacement for older 3\" limit switches with similar specs, especially those using 3\/16\" male tabs.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eRheem Protech 3\" limit switch with 3\/16\" male wire tabs (not the normal 1\/4\" tabs that most switches use). L190-20F meaning the switch opens at 190 degrees F and automatically closes at 170 degrees F. Mounting board measures 1-5\/8\" x 1-7\/16\". Also known as part # 472535001 \u0026amp; 44800. Size is 36TVH01B3.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":13473898627,"sku":"3L09-24","price":34.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/products\/yhst-130159302524877_2268_29233854.jpeg?v=1566072391"},{"product_id":"l150-20f-rheem-3-inch-limit-switch-47-21711-19","title":"L150-20F Rheem 3-inch limit switch 4710247301","description":"\u003cp\u003eRheem Protech 3\" limit switch. L150-20F meaning the switch opens at 150 degrees F and automatically closes at 130 degrees F. Mounting board measures 2-7\/8\" x 1-7\/8\". Also known as part # 472171119 \u0026amp; 41817, 3L09-16, old part number 47-21711-19 Size is 36T01B3.\u003c\/p\u003e","brand":"Quinn","offers":[{"title":"Default Title","offer_id":13473899779,"sku":"4710247301","price":74.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/products\/yhst-130159302524877_2269_25669457.jpeg?v=1566072383"},{"product_id":"l250f-limit-switch-manual-reset-47-22861-03","title":"L250F limit switch manual reset 47-22861-03","description":"\u003cp\u003eRheem Protech 250F manual reset limit switch. Size 36TX16 with an elongated mounting bracket.\u003c\/p\u003e\n\u003cp\u003eAlso known as part # 472286103. This part will also replace the obsolete 3L02-250.\u003c\/p\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":13473900419,"sku":"47-22861-03","price":28.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/products\/yhst-130159302524877_2269_26848098.jpeg?v=1566072380"},{"product_id":"3l05-1-copeland-comfort-control-white-rodgers-135-to-175-f-adjustable-temperature","title":"3L05-1 Copeland Comfort Control (White Rodgers) 135 to 175 F Adjustable Temperature","description":"\u003ch1\u003e\u003cspan\u003e3L05-1 Copeland Comfort Control (White Rodgers) 135 to 175 F Adjustable Temperature \u003c\/span\u003e\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3L05-1 Adjustable Snap Disc Limit Switch (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature safety control designed for HVAC, heating, and equipment protection applications. Featuring an \u003cstrong\u003eadjustable operating range from 135°F to 175°F\u003c\/strong\u003e with a \u003cstrong\u003e40°F differential\u003c\/strong\u003e, this \u003cstrong\u003eSPST open-on-rise\u003c\/strong\u003e switch interrupts the electrical circuit when temperatures exceed the selected setpoint and automatically resets as temperatures decrease, providing reliable overtemperature protection.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3L05-1\u003c\/li\u003e\n\u003cli\u003e3L051\u003c\/li\u003e\n\u003cli\u003e74T11-310710\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3L05-1\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3L05-1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3L05-1\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eGoodman\u003c\/li\u003e\n\u003cli\u003eRheem\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in HVAC and heating equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProvide adjustable overtemperature protection\u003c\/li\u003e\n\u003cli\u003eOpen the circuit at a user-selected temperature from 135°F to 175°F\u003c\/li\u003e\n\u003cli\u003eAutomatically reset after cooling by approximately 40°F\u003c\/li\u003e\n\u003cli\u003eProtect heat exchangers, motors, controls, and electrical components\u003c\/li\u003e\n\u003cli\u003ePrevent excessive operating temperatures\u003c\/li\u003e\n\u003cli\u003eSupport OEM and replacement service applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAdjustable Limit Switch\u003c\/li\u003e\n\u003cli\u003eSnap Disc Thermostat\u003c\/li\u003e\n\u003cli\u003eHigh Limit Control\u003c\/li\u003e\n\u003cli\u003eFan \u0026amp; Limit Control\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eTemperature Sensor\u003c\/li\u003e\n\u003cli\u003eSafety Cutoff Switch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3L05-1 is an \u003cstrong\u003eautomatic reset SPST limit switch\u003c\/strong\u003e with an \u003cstrong\u003eadjustable temperature range of 135°F to 175°F\u003c\/strong\u003e and a \u003cstrong\u003e40°F differential\u003c\/strong\u003e. The switch remains closed during normal operation and opens on temperature rise when the selected setpoint is reached. Once the temperature drops approximately 40°F below the cut-out temperature, the contacts automatically reset.\u003c\/p\u003e\n\u003cp\u003eAlways verify the desired temperature setting before installation. Adjustable controls offer greater application flexibility and are commonly used where OEM temperature requirements vary between equipment models.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEquipment shuts down on temperature faults\u003c\/li\u003e\n\u003cli\u003eIntermittent operation\u003c\/li\u003e\n\u003cli\u003eFrequent high-limit trips\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eHeating system lockouts\u003c\/li\u003e\n\u003cli\u003eInconsistent operating temperatures\u003c\/li\u003e\n\u003cli\u003eFailure to reset properly\u003c\/li\u003e\n\u003cli\u003eReduced equipment reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify temperature range requirements before adjustment.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \u003cstrong\u003eOpen on Rise\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eSet the desired temperature before installation.\u003c\/li\u003e\n\u003cli\u003eMount securely to the original sensing location.\u003c\/li\u003e\n\u003cli\u003eInspect terminals for overheating or corrosion.\u003c\/li\u003e\n\u003cli\u003eVerify continuity and operation after installation.\u003c\/li\u003e\n\u003cli\u003eTest system operation through a complete heating cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower motor operation\u003c\/li\u003e\n\u003cli\u003eAir filter condition\u003c\/li\u003e\n\u003cli\u003eHeat exchanger temperature\u003c\/li\u003e\n\u003cli\u003eAirflow restrictions\u003c\/li\u003e\n\u003cli\u003eSupply and return ducts\u003c\/li\u003e\n\u003cli\u003eElectrical terminals\u003c\/li\u003e\n\u003cli\u003eWiring harness condition\u003c\/li\u003e\n\u003cli\u003eFurnace control board\u003c\/li\u003e\n\u003cli\u003eEquipment temperature rise\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003eControls, Temperature, 135 to 175 degrees F Adjustable Temperature Range, 40 degrees F Differential Temperature, SPST Open on Rise Switch Action, Snap Disc Auto Reset Limit Switch (74T11-310710)\u003c\/span\u003e\u003c\/p\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":39680509018178,"sku":"3L05-1","price":30.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/products\/th-2022-01-24T014805.879.jpg?v=1643014324"},{"product_id":"3l05-10-copeland-comfort-control-white-rodgers-135-to-175f-adjustable-temperature-range","title":"3L05-10 Copeland Comfort Control (White Rodgers), 135 to 175F Adjustable Temperature Range","description":"\u003ch1\u003e\u003cspan\u003e3L05-10 Copeland Comfort Control (White Rodgers), 135 to 175F Adjustable Temperature Range\u003c\/span\u003e\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3L05-10 Adjustable Snap Disc Limit Switch (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature safety control designed for HVAC, heating, and refrigeration equipment requiring adjustable overtemperature protection. Featuring an \u003cstrong\u003eadjustable temperature range from 135°F to 175°F\u003c\/strong\u003e, this \u003cstrong\u003eSPST open-on-rise\u003c\/strong\u003e limit switch interrupts the electrical circuit when temperatures exceed the selected setpoint and automatically resets after cooling, helping safeguard equipment from overheating.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3L05-10\u003c\/li\u003e\n\u003cli\u003e3L0510\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3L05-10\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3L05-10\u003c\/li\u003e\n\u003cli\u003e74T11 Series Adjustable Limit Switch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3L05-10\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eGoodman\u003c\/li\u003e\n\u003cli\u003eRheem\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in HVAC and heating equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProvide adjustable overtemperature protection\u003c\/li\u003e\n\u003cli\u003eOpen the circuit at a user-selected temperature between 135°F and 175°F\u003c\/li\u003e\n\u003cli\u003eAutomatically reset after cooling\u003c\/li\u003e\n\u003cli\u003eProtect heat exchangers, heaters, motors, and control circuits\u003c\/li\u003e\n\u003cli\u003ePrevent equipment damage from excessive temperatures\u003c\/li\u003e\n\u003cli\u003eSupport OEM and replacement service applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAdjustable Limit Switch\u003c\/li\u003e\n\u003cli\u003eSnap Disc Thermostat\u003c\/li\u003e\n\u003cli\u003eHigh Limit Control\u003c\/li\u003e\n\u003cli\u003eFan \u0026amp; Limit Control\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eTemperature Sensor\u003c\/li\u003e\n\u003cli\u003eSafety Cutoff Switch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3L05-10 is an \u003cstrong\u003eautomatic reset SPST limit switch\u003c\/strong\u003e featuring an \u003cstrong\u003eadjustable operating range of 135°F to 175°F\u003c\/strong\u003e. The switch remains closed during normal operation and opens on temperature rise when the selected limit temperature is reached. Once the temperature falls below the reset point, the contacts automatically close, restoring normal operation.\u003c\/p\u003e\n\u003cp\u003eAdjustable snap disc controls are commonly used where multiple OEM temperature settings may be required, reducing inventory while maintaining application flexibility.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFrequent high-limit trips\u003c\/li\u003e\n\u003cli\u003eEquipment shuts down unexpectedly\u003c\/li\u003e\n\u003cli\u003eOpen safety circuit faults\u003c\/li\u003e\n\u003cli\u003eIntermittent heating operation\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eFurnace lockout conditions\u003c\/li\u003e\n\u003cli\u003eFailure to reset properly\u003c\/li\u003e\n\u003cli\u003eReduced system reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify the required temperature setting before adjustment.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \u003cstrong\u003eOpen on Rise\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eAdjust the temperature setting as required by the equipment manufacturer.\u003c\/li\u003e\n\u003cli\u003eMount securely to the original sensing surface.\u003c\/li\u003e\n\u003cli\u003eInspect terminals for corrosion or overheating.\u003c\/li\u003e\n\u003cli\u003eVerify continuity and proper operation after installation.\u003c\/li\u003e\n\u003cli\u003eTest equipment through a complete operating cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower motor operation\u003c\/li\u003e\n\u003cli\u003eAir filter condition\u003c\/li\u003e\n\u003cli\u003eHeat exchanger temperature\u003c\/li\u003e\n\u003cli\u003eAirflow restrictions\u003c\/li\u003e\n\u003cli\u003eSupply and return ductwork\u003c\/li\u003e\n\u003cli\u003eElectrical terminals\u003c\/li\u003e\n\u003cli\u003eWiring harness condition\u003c\/li\u003e\n\u003cli\u003eFurnace control board\u003c\/li\u003e\n\u003cli\u003eEquipment temperature rise\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003eControls, Temperature, 135 to 175 degrees F Adjustable Temperature Range, 20 degrees F Differential Temperature, SPST Open on Rise Switch Action, Snap Disc Auto Reset Limit Switch (74T11-310724)\u003c\/span\u003e\u003c\/p\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":39680509804610,"sku":"3L05-10","price":30.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/products\/th-2022-01-24T014805.879_2aa50ab1-852e-4b7a-92c7-3ce8bae9a169.jpg?v=1643014564"},{"product_id":"3l05-13-copeland-comfort-control-white-rodgers-250-to-290f-adjustable-temperature","title":"3L05-13 Copeland Comfort Control (White Rodgers), 250 to 290F Adjustable Temperature","description":"\u003ch1\u003e3L05-13 Copeland Comfort Control (White Rodgers), 250 to 290F Adjustable Temperature \u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3L05-13 Adjustable Snap Disc Limit Switch (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature safety control designed for HVAC, heating, commercial, and industrial equipment requiring high-temperature overheat protection. Featuring an \u003cstrong\u003eadjustable temperature range from 250°F to 290°F\u003c\/strong\u003e, this \u003cstrong\u003eSPST open-on-rise\u003c\/strong\u003e limit switch interrupts the electrical circuit when temperatures exceed the selected setpoint and automatically resets after cooling, helping protect critical equipment from heat-related damage.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3L05-13\u003c\/li\u003e\n\u003cli\u003e3L0513\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3L05-13\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3L05-13\u003c\/li\u003e\n\u003cli\u003e74T11 Series Adjustable Limit Switch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3L05-13\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eGoodman\u003c\/li\u003e\n\u003cli\u003eRheem\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003cli\u003eCommercial Heating Equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in HVAC, heating, and industrial equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProvide adjustable high-temperature protection\u003c\/li\u003e\n\u003cli\u003eOpen the circuit at a user-selected temperature between 250°F and 290°F\u003c\/li\u003e\n\u003cli\u003eAutomatically reset after cooling\u003c\/li\u003e\n\u003cli\u003eProtect electric heaters, heat exchangers, motors, and control circuits\u003c\/li\u003e\n\u003cli\u003ePrevent equipment damage due to overheating\u003c\/li\u003e\n\u003cli\u003eSupport OEM and replacement service applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAdjustable Limit Switch\u003c\/li\u003e\n\u003cli\u003eSnap Disc Thermostat\u003c\/li\u003e\n\u003cli\u003eHigh Limit Control\u003c\/li\u003e\n\u003cli\u003eFan \u0026amp; Limit Control\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eTemperature Sensor\u003c\/li\u003e\n\u003cli\u003eSafety Cutoff Switch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3L05-13 is an \u003cstrong\u003eautomatic reset SPST limit switch\u003c\/strong\u003e with an \u003cstrong\u003eadjustable operating range of 250°F to 290°F\u003c\/strong\u003e. The switch remains closed during normal operation and opens on temperature rise when the selected setpoint is reached. After temperatures fall below the reset threshold, the contacts automatically close and restore normal operation.\u003c\/p\u003e\n\u003cp\u003eThis control is commonly used in high-temperature HVAC, industrial heating, process equipment, and specialty heating applications where adjustable overtemperature protection is required.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEquipment shuts down on high-limit fault\u003c\/li\u003e\n\u003cli\u003eFrequent temperature safety trips\u003c\/li\u003e\n\u003cli\u003eOpen safety circuit\u003c\/li\u003e\n\u003cli\u003eIntermittent operation\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eFailure to reset properly\u003c\/li\u003e\n\u003cli\u003eEquipment lockout conditions\u003c\/li\u003e\n\u003cli\u003eReduced heating performance\u003c\/li\u003e\n\u003cli\u003eNuisance shutdowns\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify the required temperature range before adjustment.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \u003cstrong\u003eOpen on Rise\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eSet the desired operating temperature before installation.\u003c\/li\u003e\n\u003cli\u003eMount securely to the original sensing surface.\u003c\/li\u003e\n\u003cli\u003eInspect terminals for corrosion or heat damage.\u003c\/li\u003e\n\u003cli\u003eVerify continuity and operation after installation.\u003c\/li\u003e\n\u003cli\u003eTest equipment through a complete operating cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHeater element condition\u003c\/li\u003e\n\u003cli\u003eBlower motor operation\u003c\/li\u003e\n\u003cli\u003eAirflow restrictions\u003c\/li\u003e\n\u003cli\u003eHeat exchanger condition\u003c\/li\u003e\n\u003cli\u003eTemperature rise across equipment\u003c\/li\u003e\n\u003cli\u003eElectrical terminals\u003c\/li\u003e\n\u003cli\u003eWiring harness condition\u003c\/li\u003e\n\u003cli\u003eControl board operation\u003c\/li\u003e\n\u003cli\u003eVentilation pathways\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003eControls, Temperature, 250 to 290 degrees F Adjustable Temperature Range, 40 degrees F Differential Temperature, SPST Open on Rise Switch Action, Snap Disc Auto Reset Limit Switch (74T11-310730)\u003c\/span\u003e\u003c\/p\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":39680512360514,"sku":"3L05-13","price":30.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/products\/th-2022-01-24T014805.879_0bf344e9-ad48-411f-8085-fe711801ad5d.jpg?v=1643014789"},{"product_id":"3l05-2-copeland-comfort-control-white-rodgers-175-to-215-f-adjustable-temperature-diff","title":"3L05-2 Copeland Comfort Control (White Rodgers), 175 to 215 F Adjustable Temperature Diff","description":"\u003ch1\u003e3L05-2 Copeland Comfort Control (White Rodgers), 175 to 215 F Adjustable Temperature Diff\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3L05-2 Adjustable Snap Disc Limit Switch (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature safety control designed for HVAC, heating, and refrigeration applications requiring adjustable overtemperature protection. Featuring an \u003cstrong\u003eadjustable temperature range from 175°F to 215°F\u003c\/strong\u003e with a \u003cstrong\u003e40°F differential\u003c\/strong\u003e, this \u003cstrong\u003eSPST open-on-rise\u003c\/strong\u003e switch interrupts the electrical circuit when temperatures exceed the selected setpoint and automatically resets after cooling.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3L05-2\u003c\/li\u003e\n\u003cli\u003e3L052\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3L05-2\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3L05-2\u003c\/li\u003e\n\u003cli\u003e74T11 Series Adjustable Limit Switch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3L05-2\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eGoodman\u003c\/li\u003e\n\u003cli\u003eRheem\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in heating, cooling, and refrigeration equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProvide adjustable overtemperature protection\u003c\/li\u003e\n\u003cli\u003eOpen the circuit at a user-selected temperature between 175°F and 215°F\u003c\/li\u003e\n\u003cli\u003eAutomatically reset after cooling by approximately 40°F\u003c\/li\u003e\n\u003cli\u003eProtect heat exchangers, motors, controls, and electrical components\u003c\/li\u003e\n\u003cli\u003ePrevent equipment damage due to overheating\u003c\/li\u003e\n\u003cli\u003eSupport OEM and service replacement applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAdjustable Limit Switch\u003c\/li\u003e\n\u003cli\u003eSnap Disc Thermostat\u003c\/li\u003e\n\u003cli\u003eHigh Limit Control\u003c\/li\u003e\n\u003cli\u003eFan \u0026amp; Limit Control\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eTemperature Sensor\u003c\/li\u003e\n\u003cli\u003eSafety Cutoff Switch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3L05-2 is an \u003cstrong\u003eautomatic reset SPST limit switch\u003c\/strong\u003e with an \u003cstrong\u003eadjustable operating range of 175°F to 215°F\u003c\/strong\u003e and a \u003cstrong\u003e40°F differential\u003c\/strong\u003e. The contacts remain closed under normal operating conditions and open on temperature rise when the selected setpoint is reached. The switch automatically resets after the sensed temperature falls approximately 40°F below the trip point.\u003c\/p\u003e\n\u003cp\u003eAlways verify the required temperature setting before installation. Adjustable snap disc controls provide flexibility for OEM equipment and specialty heating applications where exact limit temperatures may vary.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFrequent high-limit trips\u003c\/li\u003e\n\u003cli\u003eEquipment shuts down on safety\u003c\/li\u003e\n\u003cli\u003eIntermittent heating operation\u003c\/li\u003e\n\u003cli\u003eOpen safety circuit faults\u003c\/li\u003e\n\u003cli\u003eSystem lockouts\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eFailure to reset properly\u003c\/li\u003e\n\u003cli\u003eReduced equipment reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify the required temperature range before adjustment.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \u003cstrong\u003eOpen on Rise\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eSet the desired temperature before installation.\u003c\/li\u003e\n\u003cli\u003eMount securely to the original sensing location.\u003c\/li\u003e\n\u003cli\u003eInspect wiring terminals for corrosion or heat damage.\u003c\/li\u003e\n\u003cli\u003eVerify continuity and operation after installation.\u003c\/li\u003e\n\u003cli\u003eTest the system through a complete operating cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower motor operation\u003c\/li\u003e\n\u003cli\u003eAir filter condition\u003c\/li\u003e\n\u003cli\u003eHeat exchanger temperature\u003c\/li\u003e\n\u003cli\u003eAirflow restrictions\u003c\/li\u003e\n\u003cli\u003eSupply and return duct condition\u003c\/li\u003e\n\u003cli\u003eElectrical terminals\u003c\/li\u003e\n\u003cli\u003eWiring harness condition\u003c\/li\u003e\n\u003cli\u003eFurnace control board\u003c\/li\u003e\n\u003cli\u003eEquipment temperature rise\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003eControls, Temperature, 175 to 215 degrees F Adjustable Temperature Range, 40 degrees F Differential Temperature, SPST Open on Rise Switch Action, Snap Disc Auto Reset Limit Switch (74T11-310711)\u003c\/span\u003e\u003c\/p\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":39680512950338,"sku":"3L05-2","price":30.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/products\/th-2022-01-24T014805.879_3ed40b9b-ef28-45d4-b706-5833292906eb.jpg?v=1643015024"},{"product_id":"3l05-3-copeland-comfort-control-white-rodgers-210-to-250-degrees-f-adjustable-temperature-diff","title":"3L05-3 Copeland Comfort Control (White Rodgers), 210 to 250 degrees F Adjustable Temperature Diff","description":"\u003ch1\u003e3L05-3 Copeland Comfort Control (White Rodgers), 210 to 250 degrees F Adjustable Temperature Diff\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3L05-3 Adjustable Snap Disc Limit Switch (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature safety control designed for HVAC, heating, commercial, and industrial equipment requiring adjustable high-temperature protection. Featuring an \u003cstrong\u003eadjustable temperature range from 210°F to 250°F\u003c\/strong\u003e with a \u003cstrong\u003e40°F differential\u003c\/strong\u003e, this \u003cstrong\u003eSPST open-on-rise\u003c\/strong\u003e switch interrupts the electrical circuit when temperatures exceed the selected setpoint and automatically resets after cooling.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3L05-3\u003c\/li\u003e\n\u003cli\u003e3L053\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3L05-3\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3L05-3\u003c\/li\u003e\n\u003cli\u003e74T11 Series Adjustable Limit Switch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3L05-3\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eGoodman\u003c\/li\u003e\n\u003cli\u003eRheem\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003cli\u003eCommercial Heating Equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in HVAC and heating equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProvide adjustable overtemperature protection\u003c\/li\u003e\n\u003cli\u003eOpen the circuit at a user-selected temperature between 210°F and 250°F\u003c\/li\u003e\n\u003cli\u003eAutomatically reset after cooling by approximately 40°F\u003c\/li\u003e\n\u003cli\u003eProtect heat exchangers, electric heaters, motors, and control circuits\u003c\/li\u003e\n\u003cli\u003ePrevent equipment damage caused by excessive temperatures\u003c\/li\u003e\n\u003cli\u003eSupport OEM and replacement service applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAdjustable Limit Switch\u003c\/li\u003e\n\u003cli\u003eSnap Disc Thermostat\u003c\/li\u003e\n\u003cli\u003eHigh Limit Control\u003c\/li\u003e\n\u003cli\u003eFan \u0026amp; Limit Control\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eTemperature Sensor\u003c\/li\u003e\n\u003cli\u003eSafety Cutoff Switch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3L05-3 is an \u003cstrong\u003eautomatic reset SPST limit switch\u003c\/strong\u003e with an \u003cstrong\u003eadjustable operating range of 210°F to 250°F\u003c\/strong\u003e and a \u003cstrong\u003e40°F differential\u003c\/strong\u003e. The contacts remain closed during normal operation and open when the selected limit temperature is reached. Once the sensed temperature decreases approximately 40°F below the trip point, the contacts automatically reset and restore circuit operation.\u003c\/p\u003e\n\u003cp\u003eThis adjustable design is commonly used where specific overtemperature protection settings are required for OEM equipment, electric heat systems, and specialty heating applications.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFrequent high-limit trips\u003c\/li\u003e\n\u003cli\u003eEquipment shuts down unexpectedly\u003c\/li\u003e\n\u003cli\u003eOpen safety circuit faults\u003c\/li\u003e\n\u003cli\u003eIntermittent operation\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eHeating system lockouts\u003c\/li\u003e\n\u003cli\u003eFailure to reset properly\u003c\/li\u003e\n\u003cli\u003eTemperature-related service calls\u003c\/li\u003e\n\u003cli\u003eReduced equipment reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify the required temperature setting before adjustment.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \u003cstrong\u003eOpen on Rise\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eSet the desired cut-out temperature before installation.\u003c\/li\u003e\n\u003cli\u003eMount securely to the original sensing location.\u003c\/li\u003e\n\u003cli\u003eInspect terminals for corrosion or heat damage.\u003c\/li\u003e\n\u003cli\u003eVerify continuity and operation after installation.\u003c\/li\u003e\n\u003cli\u003eTest equipment through a complete operating cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower motor operation\u003c\/li\u003e\n\u003cli\u003eAir filter condition\u003c\/li\u003e\n\u003cli\u003eAirflow restrictions\u003c\/li\u003e\n\u003cli\u003eHeat exchanger temperature\u003c\/li\u003e\n\u003cli\u003eElectric heater elements\u003c\/li\u003e\n\u003cli\u003eWiring harness condition\u003c\/li\u003e\n\u003cli\u003eElectrical terminals\u003c\/li\u003e\n\u003cli\u003eFurnace control board\u003c\/li\u003e\n\u003cli\u003eEquipment temperature rise\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003eControls, Temperature, 210 to 250 degrees F Adjustable Temperature Range, 40 degrees F Differential Temperature, SPST Open on Rise Switch Action, Snap Disc Auto Reset Limit Switch (74T11-310712)\u003c\/span\u003e\u003c\/p\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":39680513409090,"sku":"3L05-3","price":30.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/products\/th-2022-01-24T014805.879_eb44857e-9a8c-4103-bbb7-c54f40886130.jpg?v=1643015195"},{"product_id":"3f01-130-130-degrees-f-fixed-cut-in-temperature-115-degrees-f-fixed","title":"3F01-130 Copeland Comfort Control (White Rodgers) F130-15","description":"\u003ch1\u003e3F01-130 Copeland Comfort Control (White Rodgers) F130-15 \u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3F01-130 Snap Disc Fan Switch (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature control designed to regulate blower fan operation in furnaces, air handlers, and HVAC equipment. Featuring a \u003cstrong\u003e130°F fixed cut-in temperature\u003c\/strong\u003e and a \u003cstrong\u003e15°F differential\u003c\/strong\u003e, this \u003cstrong\u003eclose-on-rise\u003c\/strong\u003e switch automatically energizes the blower when operating temperatures are reached and shuts the fan off as the system cools, helping improve comfort, efficiency, and equipment performance.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3F01-130\u003c\/li\u003e\n\u003cli\u003e3F01130\u003c\/li\u003e\n\u003cli\u003eF130-15\u003c\/li\u003e\n\u003cli\u003eF130-15F\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3F01-130\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3F01-130\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3F01-130\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eNordyne\u003c\/li\u003e\n\u003cli\u003eIntertherm\u003c\/li\u003e\n\u003cli\u003eMiller\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in heating and HVAC equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eControl blower fan operation\u003c\/li\u003e\n\u003cli\u003eClose contacts at 130°F on temperature rise\u003c\/li\u003e\n\u003cli\u003eOpen contacts after cooling by approximately 15°F\u003c\/li\u003e\n\u003cli\u003ePrevent circulation of cool air during furnace startup\u003c\/li\u003e\n\u003cli\u003eImprove indoor comfort and heating efficiency\u003c\/li\u003e\n\u003cli\u003eProvide automatic blower fan cycling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFan Switch\u003c\/li\u003e\n\u003cli\u003eFan \u0026amp; Limit Control\u003c\/li\u003e\n\u003cli\u003eHigh Limit Switch\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eBlower Motor\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eThermostat\u003c\/li\u003e\n\u003cli\u003eTemperature Controls\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3F01-130 is an \u003cstrong\u003eautomatic reset, close-on-rise snap disc fan switch\u003c\/strong\u003e. The contacts remain open during normal temperatures and close when the sensing surface reaches \u003cstrong\u003e130°F\u003c\/strong\u003e, energizing the blower circuit. As temperature falls approximately \u003cstrong\u003e15°F\u003c\/strong\u003e, the contacts automatically reopen, turning the blower off.\u003c\/p\u003e\n\u003cp\u003eAlways verify temperature ratings, switch action, terminal configuration, and mounting style before replacement. An incorrect fan switch temperature rating can affect comfort, blower timing, and furnace performance.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower fan will not start\u003c\/li\u003e\n\u003cli\u003eBlower runs continuously\u003c\/li\u003e\n\u003cli\u003eDelayed fan operation\u003c\/li\u003e\n\u003cli\u003eFurnace overheating\u003c\/li\u003e\n\u003cli\u003eShort-cycling blower motor\u003c\/li\u003e\n\u003cli\u003ePoor warm-air delivery\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eInconsistent heating performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify replacement temperature ratings match the original switch.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \u003cstrong\u003eClose on Rise\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eMount securely to the original sensing location.\u003c\/li\u003e\n\u003cli\u003eInspect terminals for heat damage or corrosion.\u003c\/li\u003e\n\u003cli\u003eCheck blower motor operation before installation.\u003c\/li\u003e\n\u003cli\u003eVerify fan-on and fan-off temperatures after replacement.\u003c\/li\u003e\n\u003cli\u003eTest the furnace through a complete heating cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower motor operation\u003c\/li\u003e\n\u003cli\u003eBlower relay condition\u003c\/li\u003e\n\u003cli\u003eAir filter restriction\u003c\/li\u003e\n\u003cli\u003eHeat exchanger temperature\u003c\/li\u003e\n\u003cli\u003eWiring terminals\u003c\/li\u003e\n\u003cli\u003eControl board operation\u003c\/li\u003e\n\u003cli\u003eFurnace temperature rise\u003c\/li\u003e\n\u003cli\u003eSupply and return airflow\u003c\/li\u003e\n\u003cli\u003eBlower wheel cleanliness\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003eControls, Temperature, 130 degrees F Fixed Cut-in Temperature, 115 degrees F Fixed Cut-out Temperature, Close on Rise Switch Action, Snap Disc Auto Reset Fan Switch (60T12-610047)\u003c\/span\u003e\u003c\/p\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":39680514818114,"sku":"3F01-130","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/products\/th-2022-01-24T021202.081.jpg?v=1643015661"},{"product_id":"3f01-150-copeland-comfort-control-white-rodgers-f150-20f-fan-switch","title":"3F01-150 Copeland Comfort Control (White Rodgers) F150-20F Fan Switch","description":"\u003ch1\u003e3F01-150 Copeland Comfort Control (White Rodgers) F150-20F Fan Switch \u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3F01-150 Snap Disc Fan Switch (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature control designed to regulate blower fan operation in furnaces, air handlers, and HVAC equipment. Featuring a \u003cstrong\u003e150°F fixed cut-in temperature\u003c\/strong\u003e and a \u003cstrong\u003e20°F differential\u003c\/strong\u003e, this \u003cstrong\u003eclose-on-rise\u003c\/strong\u003e fan switch automatically energizes the blower when operating temperatures are reached and shuts the fan off during cool-down, helping improve system efficiency, comfort, and equipment performance.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3F01-150\u003c\/li\u003e\n\u003cli\u003e3F01150\u003c\/li\u003e\n\u003cli\u003eF150-20F\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3F01-150\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3F01-150\u003c\/li\u003e\n\u003cli\u003e60T12 Series Fan Switch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3F01-150\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eNordyne\u003c\/li\u003e\n\u003cli\u003eIntertherm\u003c\/li\u003e\n\u003cli\u003eMiller\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in heating and HVAC equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eControl blower fan operation\u003c\/li\u003e\n\u003cli\u003eClose contacts at 150°F on temperature rise\u003c\/li\u003e\n\u003cli\u003eOpen contacts after cooling by approximately 20°F\u003c\/li\u003e\n\u003cli\u003ePrevent circulation of unheated air\u003c\/li\u003e\n\u003cli\u003eImprove heating comfort and efficiency\u003c\/li\u003e\n\u003cli\u003eAutomate blower fan cycling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFan Switch\u003c\/li\u003e\n\u003cli\u003eFan \u0026amp; Limit Control\u003c\/li\u003e\n\u003cli\u003eHigh Limit Switch\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eBlower Motor\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eThermostat\u003c\/li\u003e\n\u003cli\u003eTemperature Controls\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3F01-150 is an \u003cstrong\u003eautomatic reset, close-on-rise snap disc fan switch\u003c\/strong\u003e. The contacts remain open during lower temperatures and close when the sensing surface reaches \u003cstrong\u003e150°F\u003c\/strong\u003e, energizing the blower motor circuit. Once temperature drops approximately \u003cstrong\u003e20°F\u003c\/strong\u003e, the contacts automatically reopen, shutting the blower off.\u003c\/p\u003e\n\u003cp\u003eAlways verify switch action, temperature ratings, mounting style, and terminal configuration before replacement. Using an incorrect fan switch temperature rating can affect blower performance, comfort levels, and furnace operation.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower fan will not start\u003c\/li\u003e\n\u003cli\u003eBlower runs continuously\u003c\/li\u003e\n\u003cli\u003eDelayed blower operation\u003c\/li\u003e\n\u003cli\u003ePoor warm-air delivery\u003c\/li\u003e\n\u003cli\u003eFurnace overheating\u003c\/li\u003e\n\u003cli\u003eIntermittent blower operation\u003c\/li\u003e\n\u003cli\u003eShort cycling blower motor\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify replacement temperature ratings match the original.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \u003cstrong\u003eClose on Rise\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eMount securely against the original sensing surface.\u003c\/li\u003e\n\u003cli\u003eInspect terminals for corrosion or overheating.\u003c\/li\u003e\n\u003cli\u003eVerify blower motor operation before replacing the switch.\u003c\/li\u003e\n\u003cli\u003eTest fan-on and fan-off temperatures after installation.\u003c\/li\u003e\n\u003cli\u003eRun a complete heating cycle to confirm proper operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower motor amperage\u003c\/li\u003e\n\u003cli\u003eBlower relay operation\u003c\/li\u003e\n\u003cli\u003eAir filter condition\u003c\/li\u003e\n\u003cli\u003eHeat exchanger temperature\u003c\/li\u003e\n\u003cli\u003eWiring terminals\u003c\/li\u003e\n\u003cli\u003eFurnace control board\u003c\/li\u003e\n\u003cli\u003eSupply and return airflow\u003c\/li\u003e\n\u003cli\u003eTemperature rise across furnace\u003c\/li\u003e\n\u003cli\u003eBlower wheel cleanliness\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003eControls, Temperature, 150 degrees F Fixed Cut-in Temperature, 130 degrees F Fixed Cut-out Temperature, Close on Rise Switch Action, Snap Disc Auto Reset Fan Switch (60T12-610050)\u003c\/span\u003e\u003c\/p\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":39680515571778,"sku":"3F01-150","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/products\/th-2022-01-24T021722.237.jpg?v=1643015961"},{"product_id":"3f01-160-copeland-comfort-control-white-rodgers-f160-20f-fan-switch","title":"3F01-160 Copeland Comfort Control (White Rodgers) F160-20F Fan Switch","description":"\u003ch1\u003e\u003cspan\u003e3F01-160 Copeland Comfort Control (White Rodgers) F160-20F Fan Switch \u003c\/span\u003e\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3F01-160 Snap Disc Fan Switch (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature control designed to regulate blower fan operation in furnaces, air handlers, and HVAC equipment. Featuring a \u003cstrong\u003e160°F fixed cut-in temperature\u003c\/strong\u003e and a \u003cstrong\u003e20°F differential\u003c\/strong\u003e, this \u003cstrong\u003eclose-on-rise\u003c\/strong\u003e switch automatically energizes the blower once the heat source reaches operating temperature and deactivates the fan during cooldown, helping improve comfort, efficiency, and equipment performance.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3F01-160\u003c\/li\u003e\n\u003cli\u003e3F01160\u003c\/li\u003e\n\u003cli\u003eF160-20F\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3F01-160\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3F01-160\u003c\/li\u003e\n\u003cli\u003e60T12 Series Fan Switch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3F01-160\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eNordyne\u003c\/li\u003e\n\u003cli\u003eIntertherm\u003c\/li\u003e\n\u003cli\u003eMiller\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in heating and HVAC equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eControl blower fan operation\u003c\/li\u003e\n\u003cli\u003eClose contacts at 160°F on temperature rise\u003c\/li\u003e\n\u003cli\u003eOpen contacts after cooling by approximately 20°F\u003c\/li\u003e\n\u003cli\u003ePrevent circulation of cool air during startup\u003c\/li\u003e\n\u003cli\u003eImprove heating efficiency and occupant comfort\u003c\/li\u003e\n\u003cli\u003eProvide automatic fan cycling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFan Switch\u003c\/li\u003e\n\u003cli\u003eFan \u0026amp; Limit Control\u003c\/li\u003e\n\u003cli\u003eHigh Limit Switch\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eBlower Motor\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eThermostat\u003c\/li\u003e\n\u003cli\u003eTemperature Controls\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3F01-160 is an \u003cstrong\u003eautomatic reset, close-on-rise snap disc fan switch\u003c\/strong\u003e. Contacts remain open during lower temperatures and close when the sensing surface reaches \u003cstrong\u003e160°F\u003c\/strong\u003e, energizing the blower circuit. When temperature drops by approximately \u003cstrong\u003e20°F\u003c\/strong\u003e, the contacts automatically reopen and shut the blower off.\u003c\/p\u003e\n\u003cp\u003eAlways verify switch action, mounting configuration, electrical ratings, and temperature specifications prior to replacement. Using the proper fan switch temperature rating is critical for maintaining proper blower timing and furnace performance.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower fan will not start\u003c\/li\u003e\n\u003cli\u003eBlower runs continuously\u003c\/li\u003e\n\u003cli\u003eDelayed blower engagement\u003c\/li\u003e\n\u003cli\u003ePoor airflow during heating operation\u003c\/li\u003e\n\u003cli\u003eFurnace overheating\u003c\/li\u003e\n\u003cli\u003eIntermittent blower operation\u003c\/li\u003e\n\u003cli\u003eShort-cycling fan motor\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify replacement temperature ratings match the original switch.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \u003cstrong\u003eClose on Rise\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eMount securely to the original sensing surface.\u003c\/li\u003e\n\u003cli\u003eInspect terminals for corrosion or overheating.\u003c\/li\u003e\n\u003cli\u003eVerify blower motor operation before installation.\u003c\/li\u003e\n\u003cli\u003eTest fan-on and fan-off temperatures after replacement.\u003c\/li\u003e\n\u003cli\u003eRun a complete heating cycle to verify proper operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower motor amperage\u003c\/li\u003e\n\u003cli\u003eBlower relay operation\u003c\/li\u003e\n\u003cli\u003eAir filter condition\u003c\/li\u003e\n\u003cli\u003eHeat exchanger temperature\u003c\/li\u003e\n\u003cli\u003eWiring terminals\u003c\/li\u003e\n\u003cli\u003eFurnace control board\u003c\/li\u003e\n\u003cli\u003eTemperature rise across furnace\u003c\/li\u003e\n\u003cli\u003eSupply and return airflow\u003c\/li\u003e\n\u003cli\u003eBlower wheel cleanliness\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003eControls, Temperature, 160 degrees F Fixed Cut-in Temperature, 140 degrees F Fixed Cut-out Temperature, Close on Rise Switch Action, Snap Disc Auto Reset Fan Switch (60T12-610064)\u003c\/span\u003e\u003c\/p\u003e","brand":"Quinn","offers":[{"title":"Default Title","offer_id":39680517931074,"sku":"3F01-160","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/products\/th-2022-01-24T021956.821.jpg?v=1643016171"},{"product_id":"3f01-180-copeland-comfort-control-white-rodgers-f180-20f-fan-switch","title":"3F01-180 Copeland Comfort Control (White Rodgers) F180-20F Fan Switch","description":"\u003ch1\u003e\u003cspan\u003e3F01-180 Copeland Comfort Control (White Rodgers) F180-20F Fan Switch \u003c\/span\u003e\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3F01-180 Snap Disc Fan Switch (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature control designed to regulate blower fan operation in furnaces, air handlers, and HVAC equipment. Featuring a \u003cstrong\u003e180°F fixed cut-in temperature\u003c\/strong\u003e and a \u003cstrong\u003e20°F differential\u003c\/strong\u003e, this \u003cstrong\u003eclose-on-rise\u003c\/strong\u003e switch automatically energizes the blower when operating temperatures are reached and shuts the fan off during cooldown, promoting efficient airflow, improved comfort, and dependable system performance.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3F01-180\u003c\/li\u003e\n\u003cli\u003e3F01180\u003c\/li\u003e\n\u003cli\u003eF180-20F\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3F01-180\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3F01-180\u003c\/li\u003e\n\u003cli\u003e60T12 Series Fan Switch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3F01-180\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eNordyne\u003c\/li\u003e\n\u003cli\u003eIntertherm\u003c\/li\u003e\n\u003cli\u003eMiller\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in heating and HVAC equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eControl blower fan operation\u003c\/li\u003e\n\u003cli\u003eClose contacts at 180°F on temperature rise\u003c\/li\u003e\n\u003cli\u003eOpen contacts after cooling by approximately 20°F\u003c\/li\u003e\n\u003cli\u003ePrevent circulation of cool air during startup\u003c\/li\u003e\n\u003cli\u003eImprove heating efficiency and comfort\u003c\/li\u003e\n\u003cli\u003eAutomate blower operation based on plenum temperature\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFan Switch\u003c\/li\u003e\n\u003cli\u003eFan \u0026amp; Limit Control\u003c\/li\u003e\n\u003cli\u003eHigh Limit Switch\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eBlower Motor\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eThermostat\u003c\/li\u003e\n\u003cli\u003eTemperature Controls\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3F01-180 is an \u003cstrong\u003eautomatic reset, close-on-rise snap disc fan switch\u003c\/strong\u003e. Contacts remain open during lower temperatures and close when the sensing surface reaches \u003cstrong\u003e180°F\u003c\/strong\u003e, energizing the blower circuit. As the temperature drops approximately \u003cstrong\u003e20°F\u003c\/strong\u003e, the contacts automatically reopen, shutting the blower motor off.\u003c\/p\u003e\n\u003cp\u003eAlways verify temperature ratings, switch action, mounting style, and terminal configuration before replacement. Installing a fan switch with incorrect specifications can affect blower timing, comfort levels, and furnace performance.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower fan will not start\u003c\/li\u003e\n\u003cli\u003eBlower runs continuously\u003c\/li\u003e\n\u003cli\u003eDelayed blower operation\u003c\/li\u003e\n\u003cli\u003ePoor warm-air delivery\u003c\/li\u003e\n\u003cli\u003eFurnace overheating\u003c\/li\u003e\n\u003cli\u003eIntermittent blower performance\u003c\/li\u003e\n\u003cli\u003eShort-cycling blower motor\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify replacement temperature ratings match the original switch.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \u003cstrong\u003eClose on Rise\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eMount securely to the original sensing location.\u003c\/li\u003e\n\u003cli\u003eInspect terminals for corrosion or overheating.\u003c\/li\u003e\n\u003cli\u003eVerify blower motor and relay operation.\u003c\/li\u003e\n\u003cli\u003eTest fan-on and fan-off temperatures after installation.\u003c\/li\u003e\n\u003cli\u003eRun a complete heating cycle to confirm proper operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower motor amperage\u003c\/li\u003e\n\u003cli\u003eBlower relay condition\u003c\/li\u003e\n\u003cli\u003eAir filter restriction\u003c\/li\u003e\n\u003cli\u003eHeat exchanger temperature\u003c\/li\u003e\n\u003cli\u003eWiring terminals\u003c\/li\u003e\n\u003cli\u003eFurnace control board\u003c\/li\u003e\n\u003cli\u003eTemperature rise across furnace\u003c\/li\u003e\n\u003cli\u003eSupply and return airflow\u003c\/li\u003e\n\u003cli\u003eBlower wheel cleanliness\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003eControls, Temperature, 180 degrees F Fixed Cut-in Temperature, 160 degrees F Fixed Cut-out Temperature, Close on Rise Switch Action, Snap Disc Auto Reset Fan Switch (60T12-610065)\u003c\/span\u003e\u003c\/p\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":39680518946882,"sku":"3F01-180","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/products\/th-2022-01-24T022339.217.jpg?v=1643016392"},{"product_id":"3f01-200-copeland-comfort-control-white-rodgers-f200-20f-fan-switch","title":"3F01-200 Copeland Comfort Control (White Rodgers) F200-20F Fan Switch","description":"\u003ch1 class=\"breadcrumb-nav small--text-center\" aria-label=\"You are here\"\u003e3F01-200 Copeland Comfort Control (White Rodgers) F200-20F Fan Switch \u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cnav class=\"breadcrumb-nav small--text-center\" aria-label=\"You are here\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3F01-200 Snap Disc Fan Switch (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature control designed for blower fan operation in furnaces, air handlers, unit heaters, and HVAC equipment. Featuring a \u003cstrong\u003e200°F fixed cut-in temperature\u003c\/strong\u003e and a \u003cstrong\u003e20°F differential\u003c\/strong\u003e, this \u003cstrong\u003eclose-on-rise\u003c\/strong\u003e fan switch automatically energizes the blower when operating temperatures are reached and deactivates the fan during cooldown, helping maximize heating efficiency and maintain proper airflow.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3F01-200\u003c\/li\u003e\n\u003cli\u003e3F01200\u003c\/li\u003e\n\u003cli\u003eF200-20F\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3F01-200\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3F01-200\u003c\/li\u003e\n\u003cli\u003e60T12 Series Fan Switch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3F01-200\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eNordyne\u003c\/li\u003e\n\u003cli\u003eIntertherm\u003c\/li\u003e\n\u003cli\u003eMiller\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in HVAC and heating equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eControl blower fan operation\u003c\/li\u003e\n\u003cli\u003eClose contacts at 200°F on temperature rise\u003c\/li\u003e\n\u003cli\u003eOpen contacts after cooling by approximately 20°F\u003c\/li\u003e\n\u003cli\u003ePrevent circulation of cool air during startup\u003c\/li\u003e\n\u003cli\u003eImprove heating efficiency\u003c\/li\u003e\n\u003cli\u003eAutomate blower fan cycling based on temperature\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFan Switch\u003c\/li\u003e\n\u003cli\u003eFan \u0026amp; Limit Control\u003c\/li\u003e\n\u003cli\u003eHigh Limit Switch\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eBlower Motor\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eThermostat\u003c\/li\u003e\n\u003cli\u003eTemperature Controls\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3F01-200 is an \u003cstrong\u003eautomatic reset, close-on-rise snap disc fan switch\u003c\/strong\u003e. The contacts remain open during normal temperatures and close when the sensing surface reaches \u003cstrong\u003e200°F\u003c\/strong\u003e, energizing the blower motor circuit. As temperatures decrease by approximately \u003cstrong\u003e20°F\u003c\/strong\u003e, the contacts automatically reopen and shut the blower off.\u003c\/p\u003e\n\u003cp\u003eAlways verify the cut-in temperature, differential, mounting style, and terminal configuration before replacement. Higher-temperature fan switches such as the F200-20F are commonly used in specialty heating equipment and applications requiring delayed blower engagement.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower fan will not start\u003c\/li\u003e\n\u003cli\u003eBlower runs continuously\u003c\/li\u003e\n\u003cli\u003eDelayed fan operation\u003c\/li\u003e\n\u003cli\u003eFurnace overheating\u003c\/li\u003e\n\u003cli\u003ePoor heat distribution\u003c\/li\u003e\n\u003cli\u003eIntermittent blower operation\u003c\/li\u003e\n\u003cli\u003eShort cycling blower motor\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eMatch the original cut-in temperature and differential.\u003c\/li\u003e\n\u003cli\u003eVerify switch action is \u003cstrong\u003eClose on Rise\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eMount securely to the original sensing surface.\u003c\/li\u003e\n\u003cli\u003eInspect wiring terminals for heat damage.\u003c\/li\u003e\n\u003cli\u003eVerify blower motor and relay operation.\u003c\/li\u003e\n\u003cli\u003eTest fan-on and fan-off temperatures after installation.\u003c\/li\u003e\n\u003cli\u003eRun a complete heating cycle to verify proper performance.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower motor amperage\u003c\/li\u003e\n\u003cli\u003eBlower relay operation\u003c\/li\u003e\n\u003cli\u003eAir filter condition\u003c\/li\u003e\n\u003cli\u003eHeat exchanger temperature\u003c\/li\u003e\n\u003cli\u003eWiring terminals\u003c\/li\u003e\n\u003cli\u003eFurnace control board\u003c\/li\u003e\n\u003cli\u003eTemperature rise across furnace\u003c\/li\u003e\n\u003cli\u003eSupply and return airflow\u003c\/li\u003e\n\u003cli\u003eBlower wheel cleanliness\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/nav\u003e\u003cnav class=\"breadcrumb-nav small--text-center\" aria-label=\"You are here\"\u003eF200-20F White Rodgers fan switch 3F01-110 \u003cspan\u003eControls, Temperature, 200 degrees F Fixed Cut-in Temperature, 180 degrees F Fixed Cut-out Temperature, Close on Rise Switch Action, Snap Disc Auto Reset Fan Switch (60T12-610066)\u003c\/span\u003e\u003c\/nav\u003e\n\u003cdiv id=\"shopify-section-product-template\" class=\"shopify-section\"\u003e\n\u003cdiv id=\"ProductSection\" data-section-id=\"product-template\" data-section-type=\"product-template\" data-image-zoom-type=\"lightbox\" data-show-extra-tab=\"false\" data-extra-tab-content=\"shipping-info\" data-cart-enable-ajax=\"true\" data-enable-history-state=\"true\" itemscope=\"\" itemtype=\"http:\/\/schema.org\/Product\"\u003e\n\u003cdiv class=\"grid product-single\"\u003e\n\u003cdiv class=\"grid__item medium-up--one-half\"\u003e\n\u003cdiv id=\"ProductImageWrapper-13836820021314\" class=\"product-single__featured-image-wrapper supports-js\" data-image-id=\"13836820021314\"\u003e\n\u003cdiv class=\"product-single__photos\" data-image-id=\"13836820021314\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":39680521044034,"sku":"3F01-200","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/products\/th-2022-01-24T022829.677.jpg?v=1643016654"},{"product_id":"srl130-supco-thermostat-manual-reset-rollout","title":"SRL130 Supco THERMOSTAT MANUAL RESET Rollout","description":"\u003ch1\u003eSRL130 Supco THERMOSTAT MANUAL RESET\u003c\/h1\u003e\n\u003ch2\u003eCrosses to \u003cspan\u003eCopeland Comfort Control (White Rodgers) \u003c\/span\u003e3L12-130\u003c\/h2\u003e\n\u003cdiv id=\"8o9gp6VrdTwRKnB36nugz-content-3\"\u003e\n\u003cp\u003e\u003cspan\u003eThe \u003cstrong\u003eSupco SRL130\u003c\/strong\u003e is a \u003cstrong\u003e130°F manual‑reset safety thermostat\u003c\/strong\u003e designed for dependable protection in furnaces, heaters, and HVAC equipment. This SPST, open‑on‑rise limit interrupts the circuit when temperatures reach \u003cstrong\u003e130°F\u003c\/strong\u003e, preventing overheating or flame rollout conditions. Once tripped, the SRL130 requires a \u003cstrong\u003emanual reset\u003c\/strong\u003e, ensuring a technician inspects the system before operation resumes.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eBuilt with a durable bimetal disc and compact form factor, the SRL130 is a direct replacement for many OEM rollout and high‑temperature safety switches, including the \u003cstrong\u003eCopeland \/ White‑Rodgers 3L12‑130\u003c\/strong\u003e family.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCross‑Reference\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003eDirect Cross\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul role=\"list\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eSRL130 — Supco Manual Reset Thermostat (130°F)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"8o9gp6VrdTwRKnB36nugz-content-4\"\u003e\n\u003cdiv role=\"button\" tabindex=\"0\"\u003e\n\u003cdiv\u003e\n\u003cimg alt=\"Supco SRL130 Genuine OEM Thermostat Manual Reset\" src=\"https:\/\/th.bing.com\/th?id=OPHS.FVk%2FMDfd0ZPcUQ474C474\u0026amp;o=5\u0026amp;pid=21.1\u0026amp;w=400\u0026amp;h=400\u0026amp;r=0\"\u003e\u003cimg alt=\"\" src=\"https:\/\/th.bing.com\/th?id=ODF.LKTO9r1PpdoE3E_bvzSTRA\u0026amp;w=36\u0026amp;h=36\u0026amp;r=0\" style=\"font-size: 0.875rem;\"\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003e\u003cstrong\u003eEquivalent Function \/ Same Temperature Class\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul role=\"list\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eWhite‑Rodgers 3L12 Series (130°F manual reset)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eCopeland Comfort Control rollout switches (130°F)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eStandard 36T‑style manual‑reset rollout switches (130°F cut‑out)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnician Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul role=\"list\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eManual‑reset rollout switches \u003cstrong\u003emust never be bypassed\u003c\/strong\u003e — they indicate unsafe combustion or overheating.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eIf tripped, inspect: heat exchanger, venting, blower operation, and burner alignment.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eReplace only with \u003cstrong\u003e130°F manual‑reset\u003c\/strong\u003e models to maintain OEM safety requirements.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eSPST, open‑on‑rise design — verify mounting orientation for accurate sensing.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv role=\"button\" tabindex=\"0\"\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":42492550283330,"sku":null,"price":19.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot2025-10-05162312.png?v=1759706612"},{"product_id":"srl135-supco-manual-reset-rollout-limit","title":"SRL135 Supco Manual Reset Rollout Limit","description":"\u003ch1\u003eSRL135 Supco Manual Reset Rollout Limit\u003c\/h1\u003e\n\u003cp\u003e\u003cspan\u003eThe \u003cstrong\u003eSupco SRL135\u003c\/strong\u003e is a \u003cstrong\u003e135°F manual‑reset rollout limit switch\u003c\/strong\u003e designed to protect furnaces and heating equipment from unsafe flame rollout or overheating conditions. This SPST, open‑on‑rise safety switch interrupts burner operation when temperatures reach \u003cstrong\u003e135°F\u003c\/strong\u003e, requiring a \u003cstrong\u003emanual reset\u003c\/strong\u003e before the system can restart — ensuring a technician inspects the equipment for proper combustion and airflow.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eBuilt with a durable bimetal disc and compact 36T‑style housing, the SRL135 is a dependable replacement for OEM rollout switches used in residential and commercial HVAC systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch2\u003e\n\u003cspan\u003e🔧 \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eCross‑Reference \u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cspan\u003eDirect \u003c\/span\u003e\u003cspan\u003e\/ \u003c\/span\u003e\u003cspan\u003eSame \u003c\/span\u003e\u003cspan\u003eTemperature \u003c\/span\u003e\u003cspan\u003eClass\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul role=\"list\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eSRL135 — Supco 135°F Manual Reset Rollout Switch\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnician Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul role=\"list\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eManual‑reset rollout switches \u003cstrong\u003emust never be bypassed\u003c\/strong\u003e — they indicate unsafe combustion or blocked heat exchanger conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eReplace only with \u003cstrong\u003ematching temperature rating\u003c\/strong\u003e (135°F for SRL135).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eCommon causes of tripping: cracked heat exchanger, blocked flue, failed blower, dirty filter, misaligned burners.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eSPST, open‑on‑rise — verify proper mounting orientation for accurate sensing.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Quinn","offers":[{"title":"Default Title","offer_id":45301655961666,"sku":null,"price":20.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot2026-10-03102511.png?v=1791048321"},{"product_id":"3l01-130-white-rodgers-limit-115f-130f","title":"3L01-130 White Rodgers Limit 115F 130F","description":"\u003ch1\u003e\u003cspan\u003e3L01-130 White Rodgers Limit 115F 130F\u003c\/span\u003e\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003ehe \u003cstrong\u003eWhite-Rodgers 3L01-130 Snap Disc Limit Switch\u003c\/strong\u003e is an automatic reset temperature safety control designed to protect HVAC and heating equipment from overheating. Featuring a \u003cstrong\u003e130°F fixed cut-out temperature\u003c\/strong\u003e and \u003cstrong\u003e115°F fixed cut-in temperature\u003c\/strong\u003e, this \u003cstrong\u003eopen-on-rise\u003c\/strong\u003e switch interrupts the control circuit when temperatures exceed safe operating limits and automatically resets after the temperature decreases, ensuring reliable equipment protection and operation.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers 3L01-130\u003c\/li\u003e\n\u003cli\u003e3L01-130\u003c\/li\u003e\n\u003cli\u003e3L01130\u003c\/li\u003e\n\u003cli\u003e60T11 Series Limit Switch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3L01-130\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003cli\u003eOEM Heating Equipment\u003c\/li\u003e\n\u003cli\u003eRefrigeration Equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in heating and cooling equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProtect against overheating conditions\u003c\/li\u003e\n\u003cli\u003eOpen the control circuit at 130°F\u003c\/li\u003e\n\u003cli\u003eAutomatically reset at 115°F\u003c\/li\u003e\n\u003cli\u003eProtect blower compartments and control circuits\u003c\/li\u003e\n\u003cli\u003ePrevent component damage from excessive temperatures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLimit Switch\u003c\/li\u003e\n\u003cli\u003eFan Switch\u003c\/li\u003e\n\u003cli\u003eFan \u0026amp; Limit Control\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eCompressor Contactor\u003c\/li\u003e\n\u003cli\u003eTemperature Control Switch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3L01-130 is an \u003cstrong\u003eautomatic reset snap disc limit switch\u003c\/strong\u003e with \u003cstrong\u003eopen-on-rise operation\u003c\/strong\u003e. The switch contacts remain closed during normal operation and open when the sensing surface reaches \u003cstrong\u003e130°F\u003c\/strong\u003e. Once temperature falls to approximately \u003cstrong\u003e115°F\u003c\/strong\u003e, the contacts automatically reset. Always verify temperature ratings, switch action, mounting configuration, and terminal style prior to replacement.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEquipment shuts down unexpectedly\u003c\/li\u003e\n\u003cli\u003eIntermittent operation\u003c\/li\u003e\n\u003cli\u003eOpen safety circuit\u003c\/li\u003e\n\u003cli\u003eHeating system lockout\u003c\/li\u003e\n\u003cli\u003eBlower control issues\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eNuisance temperature trips\u003c\/li\u003e\n\u003cli\u003eReduced equipment reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eMatch the replacement temperature ratings exactly.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \"Open on Rise.\"\u003c\/li\u003e\n\u003cli\u003eMount securely to the original sensing location.\u003c\/li\u003e\n\u003cli\u003eInspect terminals for corrosion or heat damage.\u003c\/li\u003e\n\u003cli\u003eCheck airflow and operating temperatures.\u003c\/li\u003e\n\u003cli\u003eTest switch continuity before startup.\u003c\/li\u003e\n\u003cli\u003eVerify complete system operation after installation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAir filter condition\u003c\/li\u003e\n\u003cli\u003eBlower motor operation\u003c\/li\u003e\n\u003cli\u003eHeat exchanger temperature\u003c\/li\u003e\n\u003cli\u003eCoil cleanliness\u003c\/li\u003e\n\u003cli\u003eWiring connections\u003c\/li\u003e\n\u003cli\u003eControl board diagnostics\u003c\/li\u003e\n\u003cli\u003eAirflow restrictions\u003c\/li\u003e\n\u003cli\u003eElectrical terminals\u003c\/li\u003e\n\u003cli\u003eVenting system condition\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003eControls, Temperature, 115 degrees F Fixed Cut-in Temperature, 130 degrees F Fixed Cut-out Temperature, Open on Rise Switch Action, Snap Disc Auto Reset Limit Switch (60T11-610002)\u003c\/span\u003e\u003c\/p\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":45558681567298,"sku":"3L01-130","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/products\/th-2022-01-25T193710.544.jpg?v=1739517101"},{"product_id":"3l01-190-copeland-comfort-control-white-rodgers-limit-switch-l190-40f","title":"3L01-190 Copeland Comfort Control (White Rodgers) Limit Switch L190-40F","description":"\u003ch1\u003e3L01-190 Copeland Comfort Control (White Rodgers) Limit Switch L190-40F\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eReplaces\u003c\/strong\u003e 4601-2358, 3-3797 \u003c\/p\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3L01-190 Snap Disc Limit Switch (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature safety control designed to protect HVAC, heating, and refrigeration equipment from excessive operating temperatures. Featuring a \u003cstrong\u003e190°F fixed cut-out temperature\u003c\/strong\u003e and a \u003cstrong\u003e40°F differential\u003c\/strong\u003e, this \u003cstrong\u003eopen-on-rise\u003c\/strong\u003e switch interrupts the electrical circuit when temperatures exceed safe limits and automatically resets after cooling, helping protect critical system components from heat-related damage.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3L01-190\u003c\/li\u003e\n\u003cli\u003e3L01190\u003c\/li\u003e\n\u003cli\u003eL190-40F\u003c\/li\u003e\n\u003cli\u003e4601-2358\u003c\/li\u003e\n\u003cli\u003e3-3797\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3L01-190\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3L01-190\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3L01-190\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eGoodman\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003cli\u003eRefrigeration Equipment Manufacturers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in HVAC and refrigeration equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProtect equipment from overheating\u003c\/li\u003e\n\u003cli\u003eOpen the safety circuit at 190°F\u003c\/li\u003e\n\u003cli\u003eAutomatically reset after cooling\u003c\/li\u003e\n\u003cli\u003eProtect compressors, heaters, motors, and control circuits\u003c\/li\u003e\n\u003cli\u003ePrevent heat-related component failures\u003c\/li\u003e\n\u003cli\u003eMaintain reliable equipment operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSnap Disc Limit Switch\u003c\/li\u003e\n\u003cli\u003eHigh Limit Control\u003c\/li\u003e\n\u003cli\u003eFan Switch\u003c\/li\u003e\n\u003cli\u003eFan \u0026amp; Limit Control\u003c\/li\u003e\n\u003cli\u003eControl Board\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eCompressor Contactor\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eTemperature Sensor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3L01-190 is an \u003cstrong\u003eautomatic reset, open-on-rise snap disc limit switch\u003c\/strong\u003e. Under normal operating conditions the contacts remain closed. When the sensing surface reaches \u003cstrong\u003e190°F\u003c\/strong\u003e, the contacts open to interrupt the circuit and prevent overheating. Once temperature falls by the switch differential, the contacts automatically reset and restore circuit operation.\u003c\/p\u003e\n\u003cp\u003eThis limit switch replaces \u003cstrong\u003e4601-2358\u003c\/strong\u003e and \u003cstrong\u003e3-3797\u003c\/strong\u003e and is commonly used in HVAC, refrigeration, and equipment protection applications where automatic reset functionality is required.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEquipment shuts down unexpectedly\u003c\/li\u003e\n\u003cli\u003eHigh-limit or safety circuit faults\u003c\/li\u003e\n\u003cli\u003eIntermittent operation\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eRepeated temperature-related shutdowns\u003c\/li\u003e\n\u003cli\u003eSystem lockout conditions\u003c\/li\u003e\n\u003cli\u003eCompressor or heater protection trips\u003c\/li\u003e\n\u003cli\u003eFailure to restart reliably\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eMatch temperature ratings and switch action exactly.\u003c\/li\u003e\n\u003cli\u003eVerify the replacement is an \"Open on Rise\" switch.\u003c\/li\u003e\n\u003cli\u003eMount securely against the original sensing surface.\u003c\/li\u003e\n\u003cli\u003eInspect terminals for corrosion or heat discoloration.\u003c\/li\u003e\n\u003cli\u003eCheck airflow and operating temperatures.\u003c\/li\u003e\n\u003cli\u003eVerify switch continuity before startup.\u003c\/li\u003e\n\u003cli\u003eTest system operation through a complete cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower motor operation\u003c\/li\u003e\n\u003cli\u003eAirflow restrictions\u003c\/li\u003e\n\u003cli\u003eCoil cleanliness\u003c\/li\u003e\n\u003cli\u003eElectrical terminals\u003c\/li\u003e\n\u003cli\u003eWiring harness condition\u003c\/li\u003e\n\u003cli\u003eCompressor operating temperature\u003c\/li\u003e\n\u003cli\u003eControl board diagnostics\u003c\/li\u003e\n\u003cli\u003eSupply voltage\u003c\/li\u003e\n\u003cli\u003eVentilation around equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":45558752641090,"sku":"3L01-190","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot_2026-11-02_191707.png?v=1793672245"},{"product_id":"5d51-35-copeland-comfort-control-white-rodgers-fan-limit-5","title":"5D51-35 Copeland Comfort Control (White Rodgers) FAN\/LIMIT  5\"","description":"\u003ch1\u003e5D51-35 Copeland Comfort Control (White Rodgers) FAN\/LIMIT  5\"\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e5D51-35 Fan \u0026amp; Limit Control (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is a combination temperature control designed to regulate blower fan operation and provide high-temperature safety protection in residential and light commercial furnaces. Featuring a \u003cstrong\u003e5-inch insertion element\u003c\/strong\u003e, this control automatically starts and stops the blower based on plenum temperature while also protecting the furnace from overheating through its integrated limit switch function.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e5D51-35\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 5D51-35\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 5D51-35\u003c\/li\u003e\n\u003cli\u003e5D5135\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 5D51-35\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eGoodman\u003c\/li\u003e\n\u003cli\u003eRheem\u003c\/li\u003e\n\u003cli\u003eUniversal Furnace Applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in warm air furnaces to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eControl blower fan operation\u003c\/li\u003e\n\u003cli\u003ePrevent circulation of cold air during startup\u003c\/li\u003e\n\u003cli\u003eMaintain proper furnace temperature control\u003c\/li\u003e\n\u003cli\u003eProvide high-limit overheating protection\u003c\/li\u003e\n\u003cli\u003eAutomatically cycle the blower during heating operation\u003c\/li\u003e\n\u003cli\u003eProtect heat exchangers from excessive temperatures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFan \u0026amp; Limit Control\u003c\/li\u003e\n\u003cli\u003eHigh Limit Switch\u003c\/li\u003e\n\u003cli\u003eFan Switch\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eBlower Motor\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eThermostat\u003c\/li\u003e\n\u003cli\u003eTemperature Control Dial\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 5D51-35 is a \u003cstrong\u003ecombination fan and limit control\u003c\/strong\u003e utilizing a \u003cstrong\u003e5-inch sensing element\u003c\/strong\u003e that extends into the furnace plenum. This design provides both blower control and high-temperature safety protection in a single assembly. Always verify insertion length, mounting dimensions, and temperature settings before replacement.\u003c\/p\u003e\n\u003cp\u003eIf the blower runs continuously, fails to start, or the furnace cycles on high limit, inspect airflow, blower operation, filter condition, and heat exchanger temperatures before condemning the control.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower fan runs continuously\u003c\/li\u003e\n\u003cli\u003eBlower fails to start\u003c\/li\u003e\n\u003cli\u003eFurnace overheats\u003c\/li\u003e\n\u003cli\u003eHigh-limit shutdowns\u003c\/li\u003e\n\u003cli\u003eShort cycling\u003c\/li\u003e\n\u003cli\u003eInconsistent blower operation\u003c\/li\u003e\n\u003cli\u003ePoor airflow during heating\u003c\/li\u003e\n\u003cli\u003eExcessive furnace temperatures\u003c\/li\u003e\n\u003cli\u003eNo heat output\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eMark all wire locations before removal.\u003c\/li\u003e\n\u003cli\u003eVerify the 5-inch insertion length matches the original control.\u003c\/li\u003e\n\u003cli\u003eSecure the sensing element fully within the plenum.\u003c\/li\u003e\n\u003cli\u003eInspect wiring terminals for corrosion or overheating.\u003c\/li\u003e\n\u003cli\u003eCheck blower motor amperage and operation.\u003c\/li\u003e\n\u003cli\u003eVerify fan and limit settings after installation.\u003c\/li\u003e\n\u003cli\u003eTest the furnace through a complete heating cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower motor condition\u003c\/li\u003e\n\u003cli\u003eAir filter restriction\u003c\/li\u003e\n\u003cli\u003eHeat exchanger temperature rise\u003c\/li\u003e\n\u003cli\u003eFan relay operation\u003c\/li\u003e\n\u003cli\u003eWiring terminals\u003c\/li\u003e\n\u003cli\u003eFurnace control board\u003c\/li\u003e\n\u003cli\u003eSupply and return airflow\u003c\/li\u003e\n\u003cli\u003eVenting system\u003c\/li\u003e\n\u003cli\u003eBlower wheel cleanliness\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: start;\" id=\"features\"\u003e\n\u003cp\u003e\u003cimg style=\"float: none;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot_2025-11-16_181920_1024x1024.png?v=1763342443\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Quinn","offers":[{"title":"Default Title","offer_id":45558787702850,"sku":"5D51-35","price":227.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/products\/HNYWLL_L4064B2210-U_Image1_8aae51fc-c903-4534-82a3-05cd9bf5aa8e.jpg?v=1739517743"},{"product_id":"3l01-300-copeland-comfort-control-white-rodgers-limit-l300-50f","title":"3L01-300 Copeland Comfort Control (White Rodgers) Limit L300-50F","description":"\u003ch1\u003e\u003cspan\u003e3L01-300 Copeland Comfort Control (White Rodgers) Limit L300-50F\u003c\/span\u003e\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3L01-300 Snap Disc Limit Switch (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature safety control designed for HVAC, heating, and commercial equipment requiring high-temperature protection. Featuring a \u003cstrong\u003e300°F fixed cut-out temperature\u003c\/strong\u003e and \u003cstrong\u003e250°F fixed cut-in temperature\u003c\/strong\u003e, this \u003cstrong\u003eopen-on-rise\u003c\/strong\u003e snap disc switch interrupts the electrical circuit when excessive temperatures are reached and automatically resets after cooling, helping prevent equipment damage and unsafe operating conditions.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3L01-300\u003c\/li\u003e\n\u003cli\u003e3L01300\u003c\/li\u003e\n\u003cli\u003eL300-50F\u003c\/li\u003e\n\u003cli\u003e60T11-610026\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3L01-300\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3L01-300\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3L01-300\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eGoodman\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003cli\u003eCommercial Heating Equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in HVAC, heating, and process equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProtect systems from excessive temperatures\u003c\/li\u003e\n\u003cli\u003eOpen the safety circuit at 300°F\u003c\/li\u003e\n\u003cli\u003eAutomatically reset at 250°F\u003c\/li\u003e\n\u003cli\u003eProtect heaters, blowers, controls, and electrical circuits\u003c\/li\u003e\n\u003cli\u003ePrevent overheating damage\u003c\/li\u003e\n\u003cli\u003eMaintain safe equipment operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSnap Disc Limit Switch\u003c\/li\u003e\n\u003cli\u003eHigh Limit Control\u003c\/li\u003e\n\u003cli\u003eFan Switch\u003c\/li\u003e\n\u003cli\u003eFan \u0026amp; Limit Control\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eTemperature Sensor\u003c\/li\u003e\n\u003cli\u003eContactor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3L01-300 is an \u003cstrong\u003eautomatic reset, open-on-rise temperature limit switch\u003c\/strong\u003e. Contacts remain closed during normal operation and open when the sensing surface reaches \u003cstrong\u003e300°F\u003c\/strong\u003e. Once temperatures decrease to approximately \u003cstrong\u003e250°F\u003c\/strong\u003e, the switch automatically resets and restores circuit operation.\u003c\/p\u003e\n\u003cp\u003eThis switch is commonly used in applications requiring high-temperature protection. Before replacement, verify the temperature rating, electrical specifications, terminal style, and mounting configuration match the original component.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEquipment shuts down on high-limit fault\u003c\/li\u003e\n\u003cli\u003eIntermittent operation\u003c\/li\u003e\n\u003cli\u003eOpen safety circuit\u003c\/li\u003e\n\u003cli\u003eFailure to maintain operation\u003c\/li\u003e\n\u003cli\u003eNuisance limit trips\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eControl board safety faults\u003c\/li\u003e\n\u003cli\u003eOvertemperature shutdowns\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify temperature ratings match the original switch.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \"Open on Rise.\"\u003c\/li\u003e\n\u003cli\u003eInspect the mounting surface for proper heat transfer.\u003c\/li\u003e\n\u003cli\u003eCheck terminals for corrosion or heat damage.\u003c\/li\u003e\n\u003cli\u003eVerify proper airflow and ventilation.\u003c\/li\u003e\n\u003cli\u003eTest continuity before startup.\u003c\/li\u003e\n\u003cli\u003eConfirm operation through a complete heating cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower motor operation\u003c\/li\u003e\n\u003cli\u003eAirflow restrictions\u003c\/li\u003e\n\u003cli\u003eElectrical terminals\u003c\/li\u003e\n\u003cli\u003eWiring harness condition\u003c\/li\u003e\n\u003cli\u003eHeat exchanger condition\u003c\/li\u003e\n\u003cli\u003eControl board diagnostics\u003c\/li\u003e\n\u003cli\u003eEquipment operating temperatures\u003c\/li\u003e\n\u003cli\u003eVentilation pathways\u003c\/li\u003e\n\u003cli\u003eSupply voltage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003eControls, Temperature, 250 degrees F Fixed Cut-in Temperature, 300 degrees F Fixed Cut-out Temperature, Open on Rise Switch Action, Snap Disc Auto Reset Limit Switch (60T11-610026)\u003c\/span\u003e\u003c\/p\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":45561391448130,"sku":"3L01-300","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot_2026-11-02_195629.png?v=1793674603"},{"product_id":"3l01-150-copeland-comfort-control-white-rodgers-limit-110-f-150-f","title":"3L01-150 Copeland Comfort Control (White Rodgers) LIMIT 110°F\t150°F","description":"\u003ch1\u003e\u003cspan\u003e3L01-150 Copeland Comfort Control (White Rodgers) L150-40 LIMIT, IN110°F    OUT150°F\u003c\/span\u003e\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3L01-150 Snap Disc Limit Switch (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature safety control designed to protect HVAC, heating, and refrigeration equipment from overheating. Featuring a \u003cstrong\u003e150°F fixed cut-out temperature\u003c\/strong\u003e and \u003cstrong\u003e110°F fixed cut-in temperature\u003c\/strong\u003e, this \u003cstrong\u003eopen-on-rise\u003c\/strong\u003e switch interrupts the electrical circuit when excessive temperatures occur and automatically resets after the temperature drops to a safe operating level.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3L01-150\u003c\/li\u003e\n\u003cli\u003e3L01150\u003c\/li\u003e\n\u003cli\u003eL150-40\u003c\/li\u003e\n\u003cli\u003e60T11-610009\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3L01-150\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3L01-150\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3L01-150\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003cli\u003eRefrigeration Equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in HVAC and refrigeration systems to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProtect components from overheating\u003c\/li\u003e\n\u003cli\u003eOpen the circuit at 150°F\u003c\/li\u003e\n\u003cli\u003eAutomatically reset at 110°F\u003c\/li\u003e\n\u003cli\u003eProtect motors, compressors, and control circuits\u003c\/li\u003e\n\u003cli\u003ePrevent damage caused by excessive temperatures\u003c\/li\u003e\n\u003cli\u003eMaintain safe equipment operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSnap Disc Limit Switch\u003c\/li\u003e\n\u003cli\u003eHigh Limit Control\u003c\/li\u003e\n\u003cli\u003eFan Switch\u003c\/li\u003e\n\u003cli\u003eFan \u0026amp; Limit Control\u003c\/li\u003e\n\u003cli\u003eControl Board\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eCompressor Contactor\u003c\/li\u003e\n\u003cli\u003eTemperature Sensor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3L01-150 is an \u003cstrong\u003eautomatic reset, open-on-rise temperature limit switch\u003c\/strong\u003e. The contacts remain closed during normal operation and open when the sensed surface reaches \u003cstrong\u003e150°F\u003c\/strong\u003e. Once temperatures cool to approximately \u003cstrong\u003e110°F\u003c\/strong\u003e, the contacts automatically reset. Always match the switch action, mounting style, temperature ratings, and terminal configuration when replacing.\u003c\/p\u003e\n\u003cp\u003eRepeated limit trips may indicate restricted airflow, dirty coils, failed blower motors, excessive equipment temperatures, or other system performance issues requiring diagnosis.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEquipment shuts down unexpectedly\u003c\/li\u003e\n\u003cli\u003eOpen safety circuit\u003c\/li\u003e\n\u003cli\u003eFurnace or HVAC lockout conditions\u003c\/li\u003e\n\u003cli\u003eIntermittent operation\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eRepeated temperature safety trips\u003c\/li\u003e\n\u003cli\u003eCompressor or heater protection faults\u003c\/li\u003e\n\u003cli\u003eSystem fails to restart properly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify the replacement temperature ratings match the original component.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \"Open on Rise.\"\u003c\/li\u003e\n\u003cli\u003eMount securely to the designated sensing surface.\u003c\/li\u003e\n\u003cli\u003eInspect wiring terminals for corrosion or heat damage.\u003c\/li\u003e\n\u003cli\u003eCheck airflow and operating temperatures.\u003c\/li\u003e\n\u003cli\u003eTest continuity before returning the system to service.\u003c\/li\u003e\n\u003cli\u003eVerify complete system operation after installation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower motor operation\u003c\/li\u003e\n\u003cli\u003eAirflow restrictions\u003c\/li\u003e\n\u003cli\u003eEvaporator and condenser coils\u003c\/li\u003e\n\u003cli\u003eElectrical terminals\u003c\/li\u003e\n\u003cli\u003eWiring harness condition\u003c\/li\u003e\n\u003cli\u003eControl board diagnostics\u003c\/li\u003e\n\u003cli\u003eCompressor operating temperatures\u003c\/li\u003e\n\u003cli\u003eSupply voltage\u003c\/li\u003e\n\u003cli\u003eEquipment ventilation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003eControls, Temperature, 110 degrees F Fixed Cut-in Temperature, 150 degrees F Fixed Cut-out Temperature, Open on Rise Switch Action, Snap Disc Auto Reset Limit Switch (60T11-610009)\u003c\/span\u003e\u003c\/p\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":45561391579202,"sku":"3L01-150","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/products\/th-2022-01-25T194257.165.jpg?v=1739527480"},{"product_id":"l150-20f-rheem-3-inch-limit-switch-4710247301","title":"L150-20F Rheem 3-inch limit switch 4710247301","description":"\u003cp\u003eRheem Protech 3\" limit switch. L150-20F meaning the switch opens at 150 degrees F and automatically closes at 130 degrees F. Mounting board measures 2-7\/8\" x 1-7\/8\". Also known as part # 472171119 \u0026amp; 41817, 3L09-16, old part number 47-21711-19 Size is 36T01B3.\u003c\/p\u003e","brand":"Quinn","offers":[{"title":"Default Title","offer_id":45561604440130,"sku":"4710247301","price":74.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/products\/yhst-130159302524877_2269_25669457.jpeg?v=1566072383"},{"product_id":"47-25350-01-rheem-l190-20f-3-inch-limit-switch","title":"47-25350-01 Rheem L190-20F 3-inch limit switch","description":"\u003ch1\u003e47-25350-01 Rheem L190-20F 3-inch limit switch\u003c\/h1\u003e\n\u003ch2\u003e\u003cstrong\u003e47-25350-01 Obsolete Replaced by 3L09-24\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e3L09-24 Limit Switch – 190°F Open \/ 170°F Close – Auto Reset, 3.12\" Insertion\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eUpgrade your HVAC system with the reliable 3L09-24 limit switch, designed for precise temperature control and dependable performance. Featuring a fixed open temperature of 190°F and close temperature of 170°F, this auto-reset switch ensures safe operation in heating systems. With a 3.12\" insertion length and board-mounted ½\" bimetal disc, it’s ideal for a wide range of furnace and mobile home applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eSwitch Action:\u003c\/strong\u003e Open on rise\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eReset Type:\u003c\/strong\u003e Auto\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eInsertion Length:\u003c\/strong\u003e 3.12\"\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eMounting:\u003c\/strong\u003e Board-mounted\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eTabs:\u003c\/strong\u003e 3\/16\" male wire tabs\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.11 lb\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 5.4 × 3.6 × 2.65 in\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Mexico\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch3\u003e🔄 Compatibility \u0026amp; Cross-Reference\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThe 3L09-24 replaces obsolete Rheem part \u003cstrong\u003e47-25350-01\u003c\/strong\u003e and is commonly used across brands like:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eRheem\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eRuud\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eWeatherking\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eNordyne\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eColeman\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eIntertherm\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eMiller\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eIt’s a direct replacement for older 3\" limit switches with similar specs, especially those using 3\/16\" male tabs.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eRheem Protech 3\" limit switch with 3\/16\" male wire tabs (not the normal 1\/4\" tabs that most switches use). L190-20F meaning the switch opens at 190 degrees F and automatically closes at 170 degrees F. Mounting board measures 1-5\/8\" x 1-7\/16\". Also known as part # 472535001 \u0026amp; 44800. Size is 36TVH01B3.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":45561606242370,"sku":"3L09-24","price":34.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/products\/yhst-130159302524877_2268_29233854.jpeg?v=1566072391"},{"product_id":"bvd0218-00-ventline-12v-dc-replacement-motor-rv","title":"BVD0218-00 Ventline 12V DC replacement motor RV","description":"\u003ch1\u003eBVD0218-00 Ventline 12V DC replacement motor RV\u003c\/h1\u003e\n\u003cp\u003eVentline 12 volt motor includes bracket and wire. A replacement for VD0218-00, BVC0468-01 VA0164 \u0026amp; VC0468 found in roof vents, fans \u0026amp; range hoods.\u003cbr\u003e\u003cbr\u003eMotor measures 1.5\" long x 1-1\/8\" diameter. Shaft measures 1\/2\" long x 1\/16\" diameter.\u003cbr\u003e\u003cbr\u003eMarkings stamped on side of motor are HC385MG, VD218105A, 13.6V, 1.2A and 3L1243656. Since this is a replacement motor, these markings may differ from the markings on your original motor.\u003cbr\u003e\u003cbr\u003eUsed in PC, PH, PR \u0026amp; P1-5 series range hoods and the V-2100 Ventadome, among others.\u003cbr\u003e\u003cbr\u003e\u003ca class=\"articles\" href=\"http:\/\/www.mobilehomerepair.com\/media\/img\/BVD0218-000.pdf\"\u003eView instruction sheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Quinn","offers":[{"title":"Default Title","offer_id":45561706020930,"sku":"21-BVD0218-00","price":52.43,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/products\/yhst-130159302524877_2269_21301536.jpeg?v=1566072664"},{"product_id":"3l01-120-limit-copeland-comfort-control-white-rodgers-110-f-120-f","title":"3L01-120 Limit Copeland Comfort Control (White Rodgers) 110°F\t120°F","description":"\u003ch1\u003e\u003cspan\u003e3L01-120 Limit Copeland Comfort Control (White Rodgers) 110°F    120°F\u003c\/span\u003e\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3L01-120 Snap Disc Limit Switch (60T11-610000)\u003c\/strong\u003e is an automatic reset temperature safety control designed to protect HVAC and heating equipment from overheating. Featuring a \u003cstrong\u003e120°F fixed cut-out temperature\u003c\/strong\u003e and \u003cstrong\u003e110°F fixed cut-in temperature\u003c\/strong\u003e, this \u003cstrong\u003eopen-on-rise\u003c\/strong\u003e snap disc switch interrupts the control circuit when temperatures exceed safe operating limits and automatically resets after cooling.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3L01-120\u003c\/li\u003e\n\u003cli\u003e3L01120\u003c\/li\u003e\n\u003cli\u003e60T11-610000\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3L01-120\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3L01-120\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3L01-120\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003cli\u003eHeat Pumps\u003c\/li\u003e\n\u003cli\u003eRefrigeration Equipment\u003c\/li\u003e\n\u003cli\u003eHVAC Control Systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in heating and cooling equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProtect components from overheating\u003c\/li\u003e\n\u003cli\u003eOpen the circuit when temperature rises to 120°F\u003c\/li\u003e\n\u003cli\u003eAutomatically reset when temperature falls to 110°F\u003c\/li\u003e\n\u003cli\u003eProtect compressors and control circuits\u003c\/li\u003e\n\u003cli\u003ePrevent excessive operating temperatures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSnap Disc Limit Switch\u003c\/li\u003e\n\u003cli\u003eFan Switch\u003c\/li\u003e\n\u003cli\u003eHigh Limit Control\u003c\/li\u003e\n\u003cli\u003eDefrost Control\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eCompressor Contactor\u003c\/li\u003e\n\u003cli\u003eControl Board\u003c\/li\u003e\n\u003cli\u003eTemperature Sensor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3L01-120 is an \u003cstrong\u003eautomatic reset, open-on-rise limit switch\u003c\/strong\u003e. The contacts remain closed during normal operation and open when the sensed temperature reaches \u003cstrong\u003e120°F\u003c\/strong\u003e. Once the temperature cools to \u003cstrong\u003e110°F\u003c\/strong\u003e, the contacts automatically reset. When replacing, ensure the switch action, temperature ratings, mounting style, and electrical specifications match the original part.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEquipment shuts down unexpectedly\u003c\/li\u003e\n\u003cli\u003eOpen safety circuit\u003c\/li\u003e\n\u003cli\u003eCompressor fails to operate\u003c\/li\u003e\n\u003cli\u003eIntermittent operation\u003c\/li\u003e\n\u003cli\u003eNuisance temperature trips\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch\u003c\/li\u003e\n\u003cli\u003eControl board safety lockout\u003c\/li\u003e\n\u003cli\u003eHeating or cooling system interruptions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify the replacement temperature ratings match the original.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \"Open on Rise.\"\u003c\/li\u003e\n\u003cli\u003eMount firmly against the original sensing surface.\u003c\/li\u003e\n\u003cli\u003eInspect terminals for overheating or corrosion.\u003c\/li\u003e\n\u003cli\u003eCheck system airflow and operating temperatures.\u003c\/li\u003e\n\u003cli\u003eVerify switch operation after installation.\u003c\/li\u003e\n\u003cli\u003eTest complete system operation before returning equipment to service.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAirflow across equipment\u003c\/li\u003e\n\u003cli\u003eCompressor operating temperature\u003c\/li\u003e\n\u003cli\u003eElectrical terminals\u003c\/li\u003e\n\u003cli\u003eWiring harness condition\u003c\/li\u003e\n\u003cli\u003eContactor operation\u003c\/li\u003e\n\u003cli\u003eControl board diagnostics\u003c\/li\u003e\n\u003cli\u003eFan motor performance\u003c\/li\u003e\n\u003cli\u003eCoil cleanliness\u003c\/li\u003e\n\u003cli\u003eSupply voltage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003eControls, Temperature, 110 degrees F Fixed Cut-in Temperature, 120 degrees F Fixed Cut-out Temperature, Open on Rise Switch Action, Snap Disc Auto Reset Limit Switch (60T11-610000)\u003c\/span\u003e\u003c\/p\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":45885716430914,"sku":"3L01-120","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot2026-11-02182103.png?v=1793668875"},{"product_id":"3l01-140-copeland-comfort-control-white-rodgers-limit-100-f-140-f","title":"3L01-140 Copeland Comfort Control (White Rodgers) Limit 100°F\t140°F","description":"\u003ch1\u003e3L01-140 Copeland Comfort Control (White Rodgers) Limit 100°F    140°F\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3L01-140 Snap Disc Limit Switch (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature safety control designed to protect HVAC and refrigeration equipment from overheating. Featuring a \u003cstrong\u003e140°F fixed cut-out temperature\u003c\/strong\u003e and \u003cstrong\u003e100°F fixed cut-in temperature\u003c\/strong\u003e, this \u003cstrong\u003eopen-on-rise\u003c\/strong\u003e switch automatically interrupts the circuit when excessive temperatures occur and restores operation once temperatures return to a safe level.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3L01-140\u003c\/li\u003e\n\u003cli\u003e3L01140\u003c\/li\u003e\n\u003cli\u003e60T11 Series\u003c\/li\u003e\n\u003cli\u003e60T11 Snap Disc Limit Switch\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3L01-140\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3L01-140\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3L01-140\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003cli\u003eRefrigeration Equipment Manufacturers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in heating, cooling, and refrigeration systems to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProtect equipment from overheating\u003c\/li\u003e\n\u003cli\u003eOpen the control circuit at 140°F\u003c\/li\u003e\n\u003cli\u003eAutomatically reset at 100°F\u003c\/li\u003e\n\u003cli\u003eSafeguard motors, heaters, and electrical controls\u003c\/li\u003e\n\u003cli\u003eProvide dependable temperature-based safety protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSnap Disc Limit Switch\u003c\/li\u003e\n\u003cli\u003eFan Switch\u003c\/li\u003e\n\u003cli\u003eFan \u0026amp; Limit Control\u003c\/li\u003e\n\u003cli\u003eHigh Limit Control\u003c\/li\u003e\n\u003cli\u003eControl Board\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eCompressor Contactor\u003c\/li\u003e\n\u003cli\u003eTemperature Sensor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3L01-140 is an \u003cstrong\u003eautomatic reset, open-on-rise snap disc limit switch\u003c\/strong\u003e. Under normal conditions, contacts remain closed and open when the sensing surface reaches \u003cstrong\u003e140°F\u003c\/strong\u003e. Once temperatures fall to approximately \u003cstrong\u003e100°F\u003c\/strong\u003e, the switch automatically resets. Always match temperature ratings, terminal configuration, mounting style, and switch action when replacing.\u003c\/p\u003e\n\u003cp\u003eRepeated trips often indicate restricted airflow, dirty coils, defective fan motors, failing bearings, or excessive equipment operating temperatures.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEquipment shuts down on temperature safety\u003c\/li\u003e\n\u003cli\u003eIntermittent operation\u003c\/li\u003e\n\u003cli\u003eOpen safety circuit\u003c\/li\u003e\n\u003cli\u003eHeating or cooling lockout\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eFrequent nuisance trips\u003c\/li\u003e\n\u003cli\u003eReduced equipment reliability\u003c\/li\u003e\n\u003cli\u003eFailure to restart after overheating\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify replacement temperature ratings match the original component.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \"Open on Rise.\"\u003c\/li\u003e\n\u003cli\u003eMount securely against the original sensing surface.\u003c\/li\u003e\n\u003cli\u003eInspect wiring terminals for corrosion or heat damage.\u003c\/li\u003e\n\u003cli\u003eCheck airflow and operating temperatures.\u003c\/li\u003e\n\u003cli\u003eTest continuity before startup.\u003c\/li\u003e\n\u003cli\u003eVerify proper operation through a complete cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower motor operation\u003c\/li\u003e\n\u003cli\u003eCondenser fan operation\u003c\/li\u003e\n\u003cli\u003eAirflow restrictions\u003c\/li\u003e\n\u003cli\u003eCoil cleanliness\u003c\/li\u003e\n\u003cli\u003eElectrical terminals\u003c\/li\u003e\n\u003cli\u003eWiring harness condition\u003c\/li\u003e\n\u003cli\u003eTemperature rise across equipment\u003c\/li\u003e\n\u003cli\u003eControl board diagnostics\u003c\/li\u003e\n\u003cli\u003eSupply voltage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":45885779509314,"sku":"3L01-140","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot2026-11-02182103_4db74d6e-beda-4033-9c51-582ffa2cf2df.png?v=1793669829"},{"product_id":"3l01-165-copeland-comfort-control-white-rodgers-l165-40f","title":"3L01-165 Copeland Comfort Control (White Rodgers) L165-40F","description":"\u003ch1\u003e\u003cspan\u003e3L01-165 Copeland Comfort Control (White Rodgers) L165-40F In125F Out 165F\u003c\/span\u003e\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3L01-165 Snap Disc Limit Switch (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature safety control designed to protect HVAC and refrigeration equipment from overheating. Featuring a \u003cstrong\u003e165°F fixed cut-out temperature\u003c\/strong\u003e and \u003cstrong\u003e125°F fixed cut-in temperature\u003c\/strong\u003e, this \u003cstrong\u003eopen-on-rise\u003c\/strong\u003e switch interrupts the control circuit when excessive temperatures occur and automatically resets once temperatures return to a safe operating level.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3L01-165\u003c\/li\u003e\n\u003cli\u003e3L01165\u003c\/li\u003e\n\u003cli\u003eL165-40F\u003c\/li\u003e\n\u003cli\u003e60T11-610069\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3L01-165\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3L01-165\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3L01-165\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003cli\u003eRefrigeration Equipment Manufacturers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in HVAC and refrigeration equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProtect components from overheating\u003c\/li\u003e\n\u003cli\u003eOpen the circuit at 165°F\u003c\/li\u003e\n\u003cli\u003eAutomatically reset at 125°F\u003c\/li\u003e\n\u003cli\u003eSafeguard motors, compressors, heaters, and control circuits\u003c\/li\u003e\n\u003cli\u003ePrevent damage caused by excessive operating temperatures\u003c\/li\u003e\n\u003cli\u003eImprove equipment safety and reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSnap Disc Limit Switch\u003c\/li\u003e\n\u003cli\u003eHigh Limit Control\u003c\/li\u003e\n\u003cli\u003eFan Switch\u003c\/li\u003e\n\u003cli\u003eFan \u0026amp; Limit Control\u003c\/li\u003e\n\u003cli\u003eControl Board\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eCompressor Contactor\u003c\/li\u003e\n\u003cli\u003eTemperature Sensor\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3L01-165 is an \u003cstrong\u003eautomatic reset, open-on-rise limit switch\u003c\/strong\u003e. Contacts remain closed during normal operation and open when the sensing surface reaches \u003cstrong\u003e165°F\u003c\/strong\u003e. The switch automatically resets when temperature falls to approximately \u003cstrong\u003e125°F\u003c\/strong\u003e. Always verify temperature ratings, terminal configuration, mounting style, and switch action before replacement.\u003c\/p\u003e\n\u003cp\u003eRepeated limit trips typically indicate airflow restrictions, dirty coils, failing motors, blocked vents, excessive heat load, or other operational issues that should be diagnosed before replacing the switch.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEquipment shuts down on safety\u003c\/li\u003e\n\u003cli\u003eOpen limit circuit fault\u003c\/li\u003e\n\u003cli\u003eIntermittent operation\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eHeating or cooling lockouts\u003c\/li\u003e\n\u003cli\u003eRepeated nuisance trips\u003c\/li\u003e\n\u003cli\u003eCompressor protection faults\u003c\/li\u003e\n\u003cli\u003eFailure to restart after overheating\u003c\/li\u003e\n\u003cli\u003eReduced system reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify temperature ratings match the original switch.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \"Open on Rise.\"\u003c\/li\u003e\n\u003cli\u003eMount securely to the original sensing surface.\u003c\/li\u003e\n\u003cli\u003eInspect terminals for corrosion or heat damage.\u003c\/li\u003e\n\u003cli\u003eCheck airflow and operating temperatures.\u003c\/li\u003e\n\u003cli\u003eVerify continuity before startup.\u003c\/li\u003e\n\u003cli\u003eTest complete system operation after installation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower motor operation\u003c\/li\u003e\n\u003cli\u003eAirflow and duct restrictions\u003c\/li\u003e\n\u003cli\u003eEvaporator and condenser coil cleanliness\u003c\/li\u003e\n\u003cli\u003eElectrical terminals\u003c\/li\u003e\n\u003cli\u003eWiring harness condition\u003c\/li\u003e\n\u003cli\u003eControl board diagnostics\u003c\/li\u003e\n\u003cli\u003eCompressor operating temperature\u003c\/li\u003e\n\u003cli\u003eSupply voltage\u003c\/li\u003e\n\u003cli\u003eVentilation around equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003eControls, Temperature, 125 degrees F Fixed Cut-in Temperature, 165 degrees F Fixed Cut-out Temperature, Open on Rise Switch Action, Snap Disc Auto Reset Limit Switch (60T11-610069)\u003c\/span\u003e\u003c\/p\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":45886098505794,"sku":"3L01-165","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot2026-11-02185327.png?v=1793670837"},{"product_id":"3l01-170-copeland-comfort-control-white-rodgers-l170-40f","title":"3L01-170 Copeland Comfort Control (White Rodgers) L170-40F","description":"\u003ch1\u003e3L01-170 Copeland Comfort Control (White Rodgers) L170-40F \u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3L01-170 Snap Disc Limit Switch (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature safety control designed to protect HVAC and heating equipment from excessive operating temperatures. Featuring a \u003cstrong\u003e170°F fixed cut-out temperature\u003c\/strong\u003e and \u003cstrong\u003e130°F fixed cut-in temperature\u003c\/strong\u003e, this \u003cstrong\u003eopen-on-rise\u003c\/strong\u003e limit switch interrupts the electrical circuit when temperatures exceed safe limits and automatically resets once temperatures return to normal operating conditions.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3L01-170\u003c\/li\u003e\n\u003cli\u003e3L01170\u003c\/li\u003e\n\u003cli\u003eL170-40F\u003c\/li\u003e\n\u003cli\u003e60T11-610012\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3L01-170\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3L01-170\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3L01-170\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eGoodman\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in heating and HVAC equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePrevent overheating of equipment components\u003c\/li\u003e\n\u003cli\u003eOpen the control circuit at 170°F\u003c\/li\u003e\n\u003cli\u003eAutomatically reset at 130°F\u003c\/li\u003e\n\u003cli\u003eProtect heat exchangers, motors, and control circuits\u003c\/li\u003e\n\u003cli\u003eMaintain safe operating temperatures\u003c\/li\u003e\n\u003cli\u003eProvide automatic temperature-based safety protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSnap Disc Limit Switch\u003c\/li\u003e\n\u003cli\u003eHigh Limit Control\u003c\/li\u003e\n\u003cli\u003eFan Switch\u003c\/li\u003e\n\u003cli\u003eFan \u0026amp; Limit Control\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eTemperature Sensor\u003c\/li\u003e\n\u003cli\u003eContactor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3L01-170 is an \u003cstrong\u003eautomatic reset, open-on-rise snap disc limit switch\u003c\/strong\u003e. Under normal conditions, the contacts remain closed. When the sensing surface reaches \u003cstrong\u003e170°F\u003c\/strong\u003e, the contacts open to interrupt the circuit and protect equipment from overheating. The switch automatically resets when temperature drops to approximately \u003cstrong\u003e130°F\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eRepeated limit trips are usually caused by restricted airflow, dirty coils, plugged filters, improper blower operation, blocked vents, or excessive heat buildup. Always correct the root cause before replacing the switch.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEquipment shuts down on high temperature\u003c\/li\u003e\n\u003cli\u003eOpen limit fault code\u003c\/li\u003e\n\u003cli\u003eIntermittent furnace operation\u003c\/li\u003e\n\u003cli\u003eHeating system lockout\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eRepeated nuisance shutdowns\u003c\/li\u003e\n\u003cli\u003eReduced heating performance\u003c\/li\u003e\n\u003cli\u003eFailure to restart after an overheat condition\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eMatch temperature ratings exactly to the original switch.\u003c\/li\u003e\n\u003cli\u003eVerify switch action is \"Open on Rise.\"\u003c\/li\u003e\n\u003cli\u003eMount securely on the original sensing surface.\u003c\/li\u003e\n\u003cli\u003eInspect wiring terminals for heat damage or corrosion.\u003c\/li\u003e\n\u003cli\u003eCheck airflow and blower performance before replacement.\u003c\/li\u003e\n\u003cli\u003eConfirm continuity and proper operation after installation.\u003c\/li\u003e\n\u003cli\u003eTest the unit through a complete heating cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower motor operation\u003c\/li\u003e\n\u003cli\u003eAir filter condition\u003c\/li\u003e\n\u003cli\u003eHeat exchanger temperature\u003c\/li\u003e\n\u003cli\u003eSupply and return airflow\u003c\/li\u003e\n\u003cli\u003eEvaporator coil cleanliness\u003c\/li\u003e\n\u003cli\u003eWiring terminals\u003c\/li\u003e\n\u003cli\u003eFurnace control board\u003c\/li\u003e\n\u003cli\u003eVenting system condition\u003c\/li\u003e\n\u003cli\u003eTemperature rise across equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003eControls, Temperature, 130 degrees F Fixed Cut-in Temperature, 170 degrees F Fixed Cut-out Temperature, Open on Rise Switch Action, Snap Disc Auto Reset Limit Switch (60T11-610012)\u003c\/span\u003e\u003c\/p\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":45886105288770,"sku":"3L01-170","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot2026-11-02190226.png?v=1793671360"},{"product_id":"3l01-180-copeland-comfort-control-white-rodgers-l180-40f","title":"3L01-180 Copeland Comfort Control (White Rodgers) L180-40F","description":"\u003ch1\u003e3L01-180 Copeland Comfort Control (White Rodgers) L180-40F\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3L01-180 Snap Disc Limit Switch (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature safety control designed to protect HVAC, heating, and refrigeration equipment from overheating. Featuring a \u003cstrong\u003e180°F fixed cut-out temperature\u003c\/strong\u003e and a typical \u003cstrong\u003e40°F differential\u003c\/strong\u003e, this \u003cstrong\u003eopen-on-rise\u003c\/strong\u003e switch interrupts the control circuit when temperatures exceed safe operating limits and automatically resets once the temperature drops to its reset point.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3L01-180\u003c\/li\u003e\n\u003cli\u003e3L01180\u003c\/li\u003e\n\u003cli\u003eL180-40F\u003c\/li\u003e\n\u003cli\u003e60T11 Series\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3L01-180\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3L01-180\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3L01-180\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eGoodman\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in HVAC and refrigeration equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProtect systems from overheating\u003c\/li\u003e\n\u003cli\u003eOpen the control circuit at 180°F\u003c\/li\u003e\n\u003cli\u003eAutomatically reset after cooling\u003c\/li\u003e\n\u003cli\u003eProtect compressors, heat exchangers, and control circuits\u003c\/li\u003e\n\u003cli\u003ePrevent damage from excessive operating temperatures\u003c\/li\u003e\n\u003cli\u003eMaintain safe equipment operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSnap Disc Limit Switch\u003c\/li\u003e\n\u003cli\u003eHigh Limit Control\u003c\/li\u003e\n\u003cli\u003eFan Switch\u003c\/li\u003e\n\u003cli\u003eFan \u0026amp; Limit Control\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eTemperature Sensor\u003c\/li\u003e\n\u003cli\u003eContactor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3L01-180 is an \u003cstrong\u003eautomatic reset, open-on-rise snap disc limit switch\u003c\/strong\u003e commonly used in HVAC and refrigeration applications. The contacts remain closed during normal operation and open when the sensing surface reaches \u003cstrong\u003e180°F\u003c\/strong\u003e. Once the temperature decreases by the switch differential, the contacts automatically reset.\u003c\/p\u003e\n\u003cp\u003eRepeated limit trips often indicate restricted airflow, dirty coils, plugged filters, failing blower motors, blocked vents, excessive heat load, or other system issues that should be corrected before replacing the switch.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEquipment shuts down on high temperature\u003c\/li\u003e\n\u003cli\u003eOpen limit circuit fault\u003c\/li\u003e\n\u003cli\u003eIntermittent heating or cooling operation\u003c\/li\u003e\n\u003cli\u003eSafety lockout conditions\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eFrequent nuisance trips\u003c\/li\u003e\n\u003cli\u003eFailure to restart properly\u003c\/li\u003e\n\u003cli\u003eReduced system reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect electrical power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify temperature ratings and switch action match the original.\u003c\/li\u003e\n\u003cli\u003eConfirm the switch is an \"Open on Rise\" design.\u003c\/li\u003e\n\u003cli\u003eMount securely to the original sensing location.\u003c\/li\u003e\n\u003cli\u003eInspect terminals for corrosion or overheating.\u003c\/li\u003e\n\u003cli\u003eCheck airflow and operating temperatures.\u003c\/li\u003e\n\u003cli\u003eTest continuity before startup.\u003c\/li\u003e\n\u003cli\u003eVerify complete system operation after installation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower motor operation\u003c\/li\u003e\n\u003cli\u003eAir filter condition\u003c\/li\u003e\n\u003cli\u003eCoil cleanliness\u003c\/li\u003e\n\u003cli\u003eElectrical terminals\u003c\/li\u003e\n\u003cli\u003eWiring harness condition\u003c\/li\u003e\n\u003cli\u003eSupply voltage\u003c\/li\u003e\n\u003cli\u003eTemperature rise across equipment\u003c\/li\u003e\n\u003cli\u003eControl board diagnostics\u003c\/li\u003e\n\u003cli\u003eVenting and airflow restrictions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":45886123737154,"sku":"3L01-180","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot2026-11-02190629.png?v=1793671605"},{"product_id":"3l01-200-copeland-comfort-control-white-rodgers-l200-40f","title":"3L01-200 Copeland Comfort Control (White Rodgers) L200-40F","description":"\u003ch1\u003e3L01-200 Copeland Comfort Control (White Rodgers) L200-40F\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3L01-200 Snap Disc Limit Switch (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature safety control designed to protect HVAC, heating, and refrigeration equipment from excessive temperatures. Featuring a \u003cstrong\u003e200°F fixed cut-out temperature\u003c\/strong\u003e and \u003cstrong\u003e160°F fixed cut-in temperature\u003c\/strong\u003e, this \u003cstrong\u003eopen-on-rise\u003c\/strong\u003e limit switch interrupts the electrical circuit when unsafe temperatures are reached and automatically resets after cooling, helping prevent damage to critical system components.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3L01-200\u003c\/li\u003e\n\u003cli\u003e3L01200\u003c\/li\u003e\n\u003cli\u003eL200-40F\u003c\/li\u003e\n\u003cli\u003e60T11-610016\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3L01-200\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3L01-200\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3L01-200\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eGoodman\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003cli\u003eRefrigeration Equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in HVAC and refrigeration systems to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProtect equipment from overheating\u003c\/li\u003e\n\u003cli\u003eOpen the control circuit at 200°F\u003c\/li\u003e\n\u003cli\u003eAutomatically reset at 160°F\u003c\/li\u003e\n\u003cli\u003eSafeguard compressors, heaters, motors, and controls\u003c\/li\u003e\n\u003cli\u003ePrevent excessive temperature damage\u003c\/li\u003e\n\u003cli\u003eMaintain safe operating conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSnap Disc Limit Switch\u003c\/li\u003e\n\u003cli\u003eHigh Limit Control\u003c\/li\u003e\n\u003cli\u003eFan Switch\u003c\/li\u003e\n\u003cli\u003eFan \u0026amp; Limit Control\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eTemperature Sensor\u003c\/li\u003e\n\u003cli\u003eCompressor Contactor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3L01-200 is an \u003cstrong\u003eautomatic reset, open-on-rise temperature limit switch\u003c\/strong\u003e. Under normal conditions, the contacts remain closed and open when the sensing surface reaches \u003cstrong\u003e200°F\u003c\/strong\u003e. Once temperatures fall to approximately \u003cstrong\u003e160°F\u003c\/strong\u003e, the switch automatically resets and restores circuit operation.\u003c\/p\u003e\n\u003cp\u003eRepeated limit trips often indicate restricted airflow, dirty heat exchangers, plugged filters, failing blower motors, dirty coils, excessive equipment load, or inadequate ventilation. Correct the underlying overheating condition before replacing the switch.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFurnace or equipment shuts down on high limit\u003c\/li\u003e\n\u003cli\u003eOpen safety circuit fault\u003c\/li\u003e\n\u003cli\u003eIntermittent operation\u003c\/li\u003e\n\u003cli\u003eRepeated temperature trips\u003c\/li\u003e\n\u003cli\u003eSystem lockout conditions\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eHeater or compressor protection faults\u003c\/li\u003e\n\u003cli\u003eFailure to restart properly after overheating\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect electrical power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify temperature ratings match the original component.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \"Open on Rise.\"\u003c\/li\u003e\n\u003cli\u003eMount securely against the original sensing surface.\u003c\/li\u003e\n\u003cli\u003eInspect terminals for corrosion or overheating.\u003c\/li\u003e\n\u003cli\u003eCheck airflow and operating temperatures before replacement.\u003c\/li\u003e\n\u003cli\u003eVerify continuity after installation.\u003c\/li\u003e\n\u003cli\u003eTest the system through a complete operating cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower motor operation\u003c\/li\u003e\n\u003cli\u003eAir filter condition\u003c\/li\u003e\n\u003cli\u003eHeat exchanger cleanliness\u003c\/li\u003e\n\u003cli\u003eEvaporator and condenser coils\u003c\/li\u003e\n\u003cli\u003eElectrical terminals\u003c\/li\u003e\n\u003cli\u003eWiring harness condition\u003c\/li\u003e\n\u003cli\u003eControl board diagnostics\u003c\/li\u003e\n\u003cli\u003eEquipment temperature rise\u003c\/li\u003e\n\u003cli\u003eVentilation and airflow restrictions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003eControls, Temperature, 160 degrees F Fixed Cut-in Temperature, 200 degrees F Fixed Cut-out Temperature, Open on Rise Switch Action, Snap Disc Auto Reset Limit Switch (60T11-610016)\u003c\/span\u003e\u003c\/p\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":45886323392578,"sku":"3L01-200","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot2026-11-02193406.png?v=1793673259"},{"product_id":"3l01-230-copeland-comfort-control-white-rodgers-l230-40f","title":"3L01-230 Copeland Comfort Control (White Rodgers) L230-40F","description":"\u003ch1\u003e3L01-230 Copeland Comfort Control (White Rodgers) L230-40F\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3L01-230 Snap Disc Limit Switch (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature safety control designed to protect HVAC, heating, and refrigeration equipment from excessive temperatures. Featuring a \u003cstrong\u003e230°F fixed cut-out temperature\u003c\/strong\u003e and a \u003cstrong\u003e40°F differential\u003c\/strong\u003e, this \u003cstrong\u003eopen-on-rise\u003c\/strong\u003e limit switch interrupts the electrical circuit when temperatures exceed safe operating limits and automatically resets after cooling, helping prevent damage to critical system components.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3L01-230\u003c\/li\u003e\n\u003cli\u003e3L01230\u003c\/li\u003e\n\u003cli\u003eL230-40F\u003c\/li\u003e\n\u003cli\u003e60T11 Series\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3L01-230\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3L01-230\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3L01-230\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eGoodman\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003cli\u003eRefrigeration Equipment Manufacturers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in HVAC and refrigeration equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProtect equipment from overheating\u003c\/li\u003e\n\u003cli\u003eOpen the control circuit at 230°F\u003c\/li\u003e\n\u003cli\u003eAutomatically reset after cooling\u003c\/li\u003e\n\u003cli\u003eProtect compressors, heaters, motors, and control circuits\u003c\/li\u003e\n\u003cli\u003ePrevent damage caused by excessive temperatures\u003c\/li\u003e\n\u003cli\u003eMaintain safe equipment operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSnap Disc Limit Switch\u003c\/li\u003e\n\u003cli\u003eHigh Limit Control\u003c\/li\u003e\n\u003cli\u003eFan Switch\u003c\/li\u003e\n\u003cli\u003eFan \u0026amp; Limit Control\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eTemperature Sensor\u003c\/li\u003e\n\u003cli\u003eCompressor Contactor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3L01-230 is an \u003cstrong\u003eautomatic reset, open-on-rise snap disc limit switch\u003c\/strong\u003e. The contacts remain closed during normal operation and open when the sensing surface reaches \u003cstrong\u003e230°F\u003c\/strong\u003e. Once the temperature decreases by approximately \u003cstrong\u003e40°F\u003c\/strong\u003e, the contacts automatically reset and restore circuit operation.\u003c\/p\u003e\n\u003cp\u003eRepeated limit trips frequently indicate restricted airflow, dirty coils, blocked vents, failing blower motors, excessive equipment temperatures, or improper system operation. Always identify and correct the root cause before replacing the switch.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEquipment shuts down on high temperature\u003c\/li\u003e\n\u003cli\u003eOpen limit circuit fault\u003c\/li\u003e\n\u003cli\u003eIntermittent operation\u003c\/li\u003e\n\u003cli\u003eRepeated safety trips\u003c\/li\u003e\n\u003cli\u003eFurnace or HVAC lockout\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eFailure to restart properly\u003c\/li\u003e\n\u003cli\u003eReduced system reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect electrical power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify temperature ratings match the original switch.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \"Open on Rise.\"\u003c\/li\u003e\n\u003cli\u003eMount securely to the original sensing surface.\u003c\/li\u003e\n\u003cli\u003eInspect terminals for heat damage or corrosion.\u003c\/li\u003e\n\u003cli\u003eCheck airflow and operating temperatures.\u003c\/li\u003e\n\u003cli\u003eVerify continuity after installation.\u003c\/li\u003e\n\u003cli\u003eTest the unit through a complete operating cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower motor operation\u003c\/li\u003e\n\u003cli\u003eAir filter condition\u003c\/li\u003e\n\u003cli\u003eCoil cleanliness\u003c\/li\u003e\n\u003cli\u003eElectrical terminals\u003c\/li\u003e\n\u003cli\u003eWiring harness condition\u003c\/li\u003e\n\u003cli\u003eControl board diagnostics\u003c\/li\u003e\n\u003cli\u003eCompressor operating temperatures\u003c\/li\u003e\n\u003cli\u003eSupply voltage\u003c\/li\u003e\n\u003cli\u003eVentilation and airflow restrictions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eControls, Temperature, 190 degrees F Fixed Cut-in Temperature, 230 degrees F Fixed Cut-out Temperature, Open on Rise Switch Action, Snap Disc Auto Reset Limit Switch (60T11-610021)\u003c\/span\u003e\u003c\/p\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":45886328537154,"sku":"3L01-230","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot2026-11-02193836.png?v=1793673527"},{"product_id":"3l01-250-copeland-comfort-control-white-rodgers-l250-40f","title":"3L01-250 Copeland Comfort Control (White Rodgers) L250-40F","description":"\u003ch1\u003e3L01-250 Copeland Comfort Control (White Rodgers) L250-40F\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3L01-250 Snap Disc Limit Switch (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature safety control designed to protect HVAC, heating, and refrigeration equipment from extreme operating temperatures. Rated with a \u003cstrong\u003e250°F fixed cut-out temperature\u003c\/strong\u003e and \u003cstrong\u003e210°F fixed cut-in temperature\u003c\/strong\u003e, this \u003cstrong\u003eopen-on-rise\u003c\/strong\u003e switch interrupts the electrical circuit when excessive temperatures are detected and automatically restores operation after the equipment cools.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3L01-250\u003c\/li\u003e\n\u003cli\u003e3L01250\u003c\/li\u003e\n\u003cli\u003eL250-40F\u003c\/li\u003e\n\u003cli\u003e60T11-610023\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3L01-250\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3L01-250\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3L01-250\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eGoodman\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003cli\u003eCommercial Refrigeration Equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in HVAC and refrigeration systems to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProtect equipment from excessive temperatures\u003c\/li\u003e\n\u003cli\u003eOpen the circuit at 250°F\u003c\/li\u003e\n\u003cli\u003eAutomatically reset at 210°F\u003c\/li\u003e\n\u003cli\u003eProtect heaters, compressors, motors, and controls\u003c\/li\u003e\n\u003cli\u003ePrevent temperature-related equipment damage\u003c\/li\u003e\n\u003cli\u003eMaintain safe operating conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSnap Disc Limit Switch\u003c\/li\u003e\n\u003cli\u003eHigh Limit Control\u003c\/li\u003e\n\u003cli\u003eFan Switch\u003c\/li\u003e\n\u003cli\u003eFan \u0026amp; Limit Control\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eTemperature Sensor\u003c\/li\u003e\n\u003cli\u003eCompressor Contactor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3L01-250 is an \u003cstrong\u003eautomatic reset, open-on-rise snap disc limit switch\u003c\/strong\u003e. Under normal operating conditions the contacts remain closed. When the sensing surface reaches \u003cstrong\u003e250°F\u003c\/strong\u003e, the contacts open to interrupt the circuit and protect equipment from overheating. Once temperature falls to approximately \u003cstrong\u003e210°F\u003c\/strong\u003e, the contacts automatically reset and restore operation.\u003c\/p\u003e\n\u003cp\u003eThis switch is commonly used in high-temperature HVAC, heating, and refrigeration applications where reliable automatic reset protection is required. Always match the original switch action, temperature ratings, terminal configuration, and mounting style when replacing.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEquipment shuts down on high-limit fault\u003c\/li\u003e\n\u003cli\u003eRepeated temperature safety trips\u003c\/li\u003e\n\u003cli\u003eOpen limit circuit\u003c\/li\u003e\n\u003cli\u003eIntermittent operation\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eFurnace or heater lockout\u003c\/li\u003e\n\u003cli\u003eCompressor protection shutdowns\u003c\/li\u003e\n\u003cli\u003eFailure to restart after overheating\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect electrical power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify temperature ratings match the original switch.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \"Open on Rise.\"\u003c\/li\u003e\n\u003cli\u003eMount securely against the original sensing surface.\u003c\/li\u003e\n\u003cli\u003eInspect terminals for corrosion or heat damage.\u003c\/li\u003e\n\u003cli\u003eCheck airflow and equipment temperatures.\u003c\/li\u003e\n\u003cli\u003eVerify continuity after installation.\u003c\/li\u003e\n\u003cli\u003eTest the equipment through a complete operating cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower motor operation\u003c\/li\u003e\n\u003cli\u003eAirflow restrictions\u003c\/li\u003e\n\u003cli\u003eAir filter condition\u003c\/li\u003e\n\u003cli\u003eHeat exchanger condition\u003c\/li\u003e\n\u003cli\u003eCoil cleanliness\u003c\/li\u003e\n\u003cli\u003eElectrical terminals\u003c\/li\u003e\n\u003cli\u003eWiring harness condition\u003c\/li\u003e\n\u003cli\u003eControl board diagnostics\u003c\/li\u003e\n\u003cli\u003eEquipment operating temperatures\u003c\/li\u003e\n\u003cli\u003eVentilation and airflow path\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eControls, Temperature, 210 degrees F Fixed Cut-in Temperature, 250 degrees F Fixed Cut-out Temperature, Open on Rise Switch Action, Snap Disc Auto Reset Limit Switch (60T11-610023)\u003c\/span\u003e\u003c\/p\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":45886353014850,"sku":"3L01-250","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot2026-11-02194543.png?v=1793673954"},{"product_id":"5d51-90-copeland-comfort-control-white-rodgers-fan-limit-ctrl-8","title":"5D51-90 Copeland Comfort Control (White Rodgers) FAN \u0026 LIMIT CTRL, 8\"","description":"\u003ch1\u003e5D51-90 Copeland Comfort Control (White Rodgers) FAN \u0026amp; LIMIT CTRL, 8\"\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e5D51-90 Fan \u0026amp; Limit Control (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is a combination furnace control designed to manage blower fan operation and provide high-temperature safety protection in residential and light commercial heating systems. Featuring an \u003cstrong\u003e8-inch sensing element\u003c\/strong\u003e, this control automatically starts and stops the blower based on plenum temperature while protecting the furnace from overheating through its integrated limit switch function.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e5D51-90\u003c\/li\u003e\n\u003cli\u003e5D5190\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 5D51-90\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 5D51-90\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 5D51-90\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eGoodman\u003c\/li\u003e\n\u003cli\u003eRheem\u003c\/li\u003e\n\u003cli\u003eUniversal Warm Air Furnace Applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in forced-air furnaces to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eControl blower fan operation\u003c\/li\u003e\n\u003cli\u003eProvide furnace high-limit protection\u003c\/li\u003e\n\u003cli\u003ePrevent circulation of cold air at startup\u003c\/li\u003e\n\u003cli\u003eProtect heat exchangers from overheating\u003c\/li\u003e\n\u003cli\u003eAutomatically cycle the blower during heating operation\u003c\/li\u003e\n\u003cli\u003eMaintain proper furnace operating temperatures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFan \u0026amp; Limit Control\u003c\/li\u003e\n\u003cli\u003eHigh Limit Switch\u003c\/li\u003e\n\u003cli\u003eFan Switch\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eBlower Motor\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eThermostat\u003c\/li\u003e\n\u003cli\u003ePlenum Temperature Control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 5D51-90 is a \u003cstrong\u003ecombination fan and limit control\u003c\/strong\u003e equipped with an \u003cstrong\u003e8-inch sensing element\u003c\/strong\u003e for applications requiring deeper insertion into the furnace plenum. This control combines blower fan management and overtemperature protection in a single device, reducing component count and simplifying service.\u003c\/p\u003e\n\u003cp\u003eBefore replacement, verify insertion length, mounting dimensions, temperature settings, and electrical ratings match the original control.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower fan runs continuously\u003c\/li\u003e\n\u003cli\u003eBlower fails to start\u003c\/li\u003e\n\u003cli\u003eFurnace overheats\u003c\/li\u003e\n\u003cli\u003eHigh-limit shutdowns\u003c\/li\u003e\n\u003cli\u003eShort cycling\u003c\/li\u003e\n\u003cli\u003eDelayed blower operation\u003c\/li\u003e\n\u003cli\u003eInconsistent heating performance\u003c\/li\u003e\n\u003cli\u003eExcessive furnace temperatures\u003c\/li\u003e\n\u003cli\u003eNo heat output\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eLabel all wiring before removal.\u003c\/li\u003e\n\u003cli\u003eVerify the 8-inch insertion length matches the original control.\u003c\/li\u003e\n\u003cli\u003eFully insert the sensing element into the plenum.\u003c\/li\u003e\n\u003cli\u003eInspect terminals for corrosion or overheating.\u003c\/li\u003e\n\u003cli\u003eVerify blower motor operation and amperage.\u003c\/li\u003e\n\u003cli\u003eCheck fan and limit settings after installation.\u003c\/li\u003e\n\u003cli\u003eRun the furnace through a complete heating cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower motor condition\u003c\/li\u003e\n\u003cli\u003eAir filter restriction\u003c\/li\u003e\n\u003cli\u003eHeat exchanger temperature rise\u003c\/li\u003e\n\u003cli\u003eBlower relay operation\u003c\/li\u003e\n\u003cli\u003eWiring terminals\u003c\/li\u003e\n\u003cli\u003eFurnace control board\u003c\/li\u003e\n\u003cli\u003eSupply and return airflow\u003c\/li\u003e\n\u003cli\u003eVenting system\u003c\/li\u003e\n\u003cli\u003eBlower wheel cleanliness\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":45887282446402,"sku":"5D51-90","price":238.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot2026-11-02220322.png?v=1793682231"},{"product_id":"5d51-78-copeland-comfort-control-white-rodgers-fan-limit-ctrl-11-insert","title":"5D51-78 Copeland Comfort Control (White Rodgers) FAN\/LIMIT CTRL, 11\" INSERT","description":"\u003ch1\u003e5D51-78 Copeland Comfort Control (White Rodgers) FAN\/LIMIT CTRL, 11\" INSERT\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e5D51-78 Fan \u0026amp; Limit Control (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is a combination furnace control designed to regulate blower fan operation and provide high-temperature safety protection in residential and light commercial heating systems. Featuring an \u003cstrong\u003e11-inch insertion element\u003c\/strong\u003e, this control automatically cycles the blower based on plenum temperature while protecting the furnace from overheating through its integrated limit control function.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e5D51-78\u003c\/li\u003e\n\u003cli\u003e5D5178\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 5D51-78\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 5D51-78\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 5D51-78\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eGoodman\u003c\/li\u003e\n\u003cli\u003eRheem\u003c\/li\u003e\n\u003cli\u003eUniversal Warm Air Furnace Applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in forced-air furnaces to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eControl blower fan operation\u003c\/li\u003e\n\u003cli\u003eProvide furnace high-limit safety protection\u003c\/li\u003e\n\u003cli\u003ePrevent circulation of cold air during startup\u003c\/li\u003e\n\u003cli\u003eAutomatically cycle the blower during heating operation\u003c\/li\u003e\n\u003cli\u003eProtect heat exchangers from overheating\u003c\/li\u003e\n\u003cli\u003eMaintain proper furnace operating temperatures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFan \u0026amp; Limit Control\u003c\/li\u003e\n\u003cli\u003eHigh Limit Switch\u003c\/li\u003e\n\u003cli\u003eFan Switch\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eBlower Motor\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eThermostat\u003c\/li\u003e\n\u003cli\u003eTemperature Control Dial\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 5D51-78 is a \u003cstrong\u003ecombination fan and limit control\u003c\/strong\u003e equipped with an \u003cstrong\u003e11-inch insertion element\u003c\/strong\u003e for furnaces requiring deeper plenum penetration than standard controls. This all-in-one control manages blower operation while providing overtemperature protection to help safeguard the heat exchanger and furnace components.\u003c\/p\u003e\n\u003cp\u003eAlways verify insertion length, mounting dimensions, temperature settings, and electrical ratings before replacement. Improper insertion depth can affect fan cycling and temperature sensing accuracy.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower fan runs continuously\u003c\/li\u003e\n\u003cli\u003eBlower fails to start\u003c\/li\u003e\n\u003cli\u003eFurnace overheats\u003c\/li\u003e\n\u003cli\u003eHigh-limit shutdowns\u003c\/li\u003e\n\u003cli\u003eShort cycling\u003c\/li\u003e\n\u003cli\u003eDelayed blower operation\u003c\/li\u003e\n\u003cli\u003eInconsistent heating performance\u003c\/li\u003e\n\u003cli\u003eExcessive furnace temperatures\u003c\/li\u003e\n\u003cli\u003eNo heat output\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eLabel all wiring before removal.\u003c\/li\u003e\n\u003cli\u003eVerify the 11-inch insertion length matches the original control.\u003c\/li\u003e\n\u003cli\u003eFully insert the sensing element into the plenum.\u003c\/li\u003e\n\u003cli\u003eInspect terminals for corrosion or overheating.\u003c\/li\u003e\n\u003cli\u003eVerify blower motor operation and amperage.\u003c\/li\u003e\n\u003cli\u003eConfirm fan and limit settings after installation.\u003c\/li\u003e\n\u003cli\u003eTest operation through a complete heating cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower motor condition\u003c\/li\u003e\n\u003cli\u003eAir filter restriction\u003c\/li\u003e\n\u003cli\u003eHeat exchanger temperature rise\u003c\/li\u003e\n\u003cli\u003eBlower relay operation\u003c\/li\u003e\n\u003cli\u003eWiring terminals\u003c\/li\u003e\n\u003cli\u003eFurnace control board\u003c\/li\u003e\n\u003cli\u003eSupply and return airflow\u003c\/li\u003e\n\u003cli\u003eVenting system condition\u003c\/li\u003e\n\u003cli\u003eBlower wheel cleanliness\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":45887291064386,"sku":"5D51-78","price":238.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot2026-11-02220322_6f8b130e-7b1f-41c6-aaf8-b36ba0b1e398.png?v=1793682553"},{"product_id":"3l09-1-copeland-comfort-control-white-rodgers-board-mount-limit-control-l140f","title":"3L09-1 Copeland Comfort Control (White Rodgers) Board Mount Limit Control L140F","description":"\u003ch1\u003e3L09-1 Copeland Comfort Control (White Rodgers) Board Mount Limit Control L140F\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3L09-1 Board Mount Limit Control (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature safety switch designed to protect HVAC equipment, unit heaters, air handlers, and electrical control systems from overheating. Featuring a \u003cstrong\u003e140°F fixed open temperature\u003c\/strong\u003e and \u003cstrong\u003e100°F fixed close temperature\u003c\/strong\u003e, this \u003cstrong\u003eopen-on-rise\u003c\/strong\u003e bimetal limit switch interrupts the circuit when excessive temperatures are detected and automatically resets after cooling. Its compact \u003cstrong\u003eboard-mounted design\u003c\/strong\u003e with a \u003cstrong\u003e1.87-inch insertion length\u003c\/strong\u003e makes it ideal for OEM and replacement applications where space is limited.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3L09-1\u003c\/li\u003e\n\u003cli\u003e3L091\u003c\/li\u003e\n\u003cli\u003eL140F\u003c\/li\u003e\n\u003cli\u003e74T Series Limit Control\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3L09-1\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3L09-1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3L09-1\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eGoodman\u003c\/li\u003e\n\u003cli\u003eRheem\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in HVAC and heating equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProtect electrical components from overheating\u003c\/li\u003e\n\u003cli\u003eOpen the circuit at 140°F\u003c\/li\u003e\n\u003cli\u003eAutomatically reset at 100°F\u003c\/li\u003e\n\u003cli\u003eProtect circuit boards and control compartments\u003c\/li\u003e\n\u003cli\u003ePrevent heat-related equipment damage\u003c\/li\u003e\n\u003cli\u003eProvide automatic temperature-based safety protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLimit Switch\u003c\/li\u003e\n\u003cli\u003eSnap Disc Thermostat\u003c\/li\u003e\n\u003cli\u003eFan Switch\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eTemperature Sensor\u003c\/li\u003e\n\u003cli\u003eHigh Limit Control\u003c\/li\u003e\n\u003cli\u003eSafety Cutoff Switch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3L09-1 is an \u003cstrong\u003eautomatic reset, open-on-rise board mount limit control\u003c\/strong\u003e utilizing a \u003cstrong\u003e1\/2-inch bimetal snap disc\u003c\/strong\u003e with a \u003cstrong\u003e1.87-inch insertion length\u003c\/strong\u003e. Under normal conditions the contacts remain closed and open when the sensing surface reaches \u003cstrong\u003e140°F\u003c\/strong\u003e. The switch automatically resets when temperatures cool to approximately \u003cstrong\u003e100°F\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIts compact design makes it well suited for OEM HVAC equipment, fan coils, electrical enclosures, and control board protection applications where precise temperature monitoring is required.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEquipment shuts down unexpectedly\u003c\/li\u003e\n\u003cli\u003eOpen safety circuit fault\u003c\/li\u003e\n\u003cli\u003eIntermittent operation\u003c\/li\u003e\n\u003cli\u003eRepeated high-temperature trips\u003c\/li\u003e\n\u003cli\u003eControl board overheating faults\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eFailure to reset properly\u003c\/li\u003e\n\u003cli\u003eReduced equipment reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify the replacement temperature ratings match the original control.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \u003cstrong\u003eOpen on Rise\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eEnsure proper insertion depth and mounting position.\u003c\/li\u003e\n\u003cli\u003eInspect terminals for corrosion or heat damage.\u003c\/li\u003e\n\u003cli\u003eVerify airflow around control compartments.\u003c\/li\u003e\n\u003cli\u003eTest continuity after installation.\u003c\/li\u003e\n\u003cli\u003eConfirm proper operation through a complete equipment cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eControl board condition\u003c\/li\u003e\n\u003cli\u003eWiring connections\u003c\/li\u003e\n\u003cli\u003eBlower motor operation\u003c\/li\u003e\n\u003cli\u003eAirflow restrictions\u003c\/li\u003e\n\u003cli\u003eElectrical enclosure temperatures\u003c\/li\u003e\n\u003cli\u003eTransformer temperature\u003c\/li\u003e\n\u003cli\u003eFan operation\u003c\/li\u003e\n\u003cli\u003eTerminal integrity\u003c\/li\u003e\n\u003cli\u003eEquipment ventilation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003eControls, Temperature, 140 degrees F Fixed Open Temperature, 100 degrees F Fixed Close Temperature, Open on Rise Switch Action, Auto Reset, 1.87\" Insertion Length, Board Mounted 1\/2\" Bimetal Disc Limit Switch\u003c\/span\u003e\u003c\/p\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":45887390711874,"sku":"3L09-1","price":22.78,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot2026-11-02233454.png?v=1793687708"},{"product_id":"3l09-2-copeland-comfort-control-white-rodgers-board-mount-limit-control-170f","title":"3L09-2 Copeland Comfort Control (White Rodgers) Board Mount Limit Control 170F","description":"\u003ch1\u003e3L09-2 Copeland Comfort Control (White Rodgers) Board Mount Limit Control 170F\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3L09-2 Board Mount Limit Control (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature safety switch designed to protect HVAC equipment, heating systems, and electrical control assemblies from overheating. Featuring a \u003cstrong\u003e170°F fixed open temperature\u003c\/strong\u003e and automatic reset operation, this compact \u003cstrong\u003eboard-mounted bimetal limit switch\u003c\/strong\u003e opens the circuit when excessive temperatures are detected and automatically restores operation after cooling, helping protect sensitive components and control circuits from heat damage.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3L09-2\u003c\/li\u003e\n\u003cli\u003e3L092\u003c\/li\u003e\n\u003cli\u003eL170F\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3L09-2\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3L09-2\u003c\/li\u003e\n\u003cli\u003e74T Series Board Mount Limit Control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3L09-2\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eGoodman\u003c\/li\u003e\n\u003cli\u003eRheem\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in HVAC and electrical equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProtect control boards from overheating\u003c\/li\u003e\n\u003cli\u003eInterrupt circuits at elevated temperatures\u003c\/li\u003e\n\u003cli\u003eAutomatically restore operation after cooling\u003c\/li\u003e\n\u003cli\u003eSafeguard transformers and electrical compartments\u003c\/li\u003e\n\u003cli\u003ePrevent temperature-related component failure\u003c\/li\u003e\n\u003cli\u003eProvide automatic overtemperature protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBoard Mount Limit Switch\u003c\/li\u003e\n\u003cli\u003eSnap Disc Thermostat\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eHigh Limit Control\u003c\/li\u003e\n\u003cli\u003eTemperature Sensor\u003c\/li\u003e\n\u003cli\u003eSafety Cutoff Switch\u003c\/li\u003e\n\u003cli\u003eElectrical Control Assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3L09-2 is an \u003cstrong\u003eautomatic reset, open-on-rise board mount limit control\u003c\/strong\u003e utilizing a compact bimetal sensing disc. The switch remains closed during normal operation and opens when the sensing surface reaches \u003cstrong\u003e170°F\u003c\/strong\u003e, interrupting the circuit to protect equipment from overheating. Once temperatures fall below the reset threshold, the contacts automatically close and restore operation.\u003c\/p\u003e\n\u003cp\u003eOften used on control boards, electrical compartments, blower assemblies, and OEM equipment where compact temperature protection is required.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEquipment shuts down unexpectedly\u003c\/li\u003e\n\u003cli\u003eOpen safety circuit fault\u003c\/li\u003e\n\u003cli\u003eIntermittent operation\u003c\/li\u003e\n\u003cli\u003eHigh-temperature shutdowns\u003c\/li\u003e\n\u003cli\u003eControl board overheating faults\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eFailure to reset properly\u003c\/li\u003e\n\u003cli\u003eElectrical compartment overheating\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify temperature ratings match the original component.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \u003cstrong\u003eOpen on Rise\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eMount securely to the original location.\u003c\/li\u003e\n\u003cli\u003eInspect terminals for heat damage or corrosion.\u003c\/li\u003e\n\u003cli\u003eVerify adequate airflow around electrical components.\u003c\/li\u003e\n\u003cli\u003eTest continuity after installation.\u003c\/li\u003e\n\u003cli\u003eConfirm proper operation during a complete system cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eControl board condition\u003c\/li\u003e\n\u003cli\u003eTransformer temperature\u003c\/li\u003e\n\u003cli\u003eWiring harness connections\u003c\/li\u003e\n\u003cli\u003eElectrical terminals\u003c\/li\u003e\n\u003cli\u003eBlower motor operation\u003c\/li\u003e\n\u003cli\u003eAirflow restrictions\u003c\/li\u003e\n\u003cli\u003eVentilation around controls\u003c\/li\u003e\n\u003cli\u003eRelay operation\u003c\/li\u003e\n\u003cli\u003eEquipment operating temperatures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":45887390744642,"sku":"3L09-2","price":26.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot2026-11-02234410.png?v=1793688265"},{"product_id":"3l09-3-copeland-comfort-control-white-rodgers-board-mount-limit-control-140f","title":"3L09-3 Copeland Comfort Control (White Rodgers) Board Mount Limit Control 140F","description":"\u003ch1\u003e3L09-3 Copeland Comfort Control (White Rodgers) Board Mount Limit Control 140F\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3L09-3 Board Mount Limit Control (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature safety switch designed to protect HVAC equipment, heating systems, control boards, and electrical assemblies from overheating. This compact \u003cstrong\u003eboard-mounted bimetal limit switch\u003c\/strong\u003e opens the circuit when unsafe temperatures are reached and automatically resets after cooling, helping safeguard sensitive electrical components and ensure reliable equipment operation.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3L09-3\u003c\/li\u003e\n\u003cli\u003e3L093\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3L09-3\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3L09-3\u003c\/li\u003e\n\u003cli\u003e74T Series Board Mount Limit Control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3L09-3\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eGoodman\u003c\/li\u003e\n\u003cli\u003eRheem\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in HVAC and electrical equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProtect control boards from overheating\u003c\/li\u003e\n\u003cli\u003eOpen safety circuits at elevated temperatures\u003c\/li\u003e\n\u003cli\u003eAutomatically restore operation after cooling\u003c\/li\u003e\n\u003cli\u003eProtect transformers and electrical compartments\u003c\/li\u003e\n\u003cli\u003ePrevent temperature-related component failures\u003c\/li\u003e\n\u003cli\u003eProvide automatic overtemperature protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBoard Mount Limit Switch\u003c\/li\u003e\n\u003cli\u003eSnap Disc Thermostat\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eHigh Limit Control\u003c\/li\u003e\n\u003cli\u003eTemperature Sensor\u003c\/li\u003e\n\u003cli\u003eSafety Cutoff Switch\u003c\/li\u003e\n\u003cli\u003eElectrical Control Assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3L09-3 is an \u003cstrong\u003eautomatic reset, open-on-rise board mount limit control\u003c\/strong\u003e utilizing a compact bimetal sensing disc. The switch remains closed during normal operation and opens when its rated temperature is reached, interrupting the circuit to protect equipment from overheating. Once the temperature falls below the reset point, the contacts automatically close and restore operation.\u003c\/p\u003e\n\u003cp\u003eBoard-mounted limit controls are commonly used for protecting control boards, transformers, blower compartments, electrical enclosures, and other heat-sensitive HVAC components.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEquipment shuts down unexpectedly\u003c\/li\u003e\n\u003cli\u003eOpen safety circuit fault\u003c\/li\u003e\n\u003cli\u003eIntermittent operation\u003c\/li\u003e\n\u003cli\u003eRepeated high-temperature trips\u003c\/li\u003e\n\u003cli\u003eControl board overheating faults\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eFailure to reset properly\u003c\/li\u003e\n\u003cli\u003eElectrical compartment overheating\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify temperature ratings match the original component.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \u003cstrong\u003eOpen on Rise\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eMount securely in the original location.\u003c\/li\u003e\n\u003cli\u003eInspect terminals for corrosion or heat damage.\u003c\/li\u003e\n\u003cli\u003eVerify adequate ventilation around electrical components.\u003c\/li\u003e\n\u003cli\u003eTest continuity after installation.\u003c\/li\u003e\n\u003cli\u003eConfirm proper system operation after replacement.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eControl board condition\u003c\/li\u003e\n\u003cli\u003eTransformer temperature\u003c\/li\u003e\n\u003cli\u003eWiring harness connections\u003c\/li\u003e\n\u003cli\u003eElectrical terminals\u003c\/li\u003e\n\u003cli\u003eBlower motor operation\u003c\/li\u003e\n\u003cli\u003eAirflow restrictions\u003c\/li\u003e\n\u003cli\u003eEquipment operating temperature\u003c\/li\u003e\n\u003cli\u003eRelay condition\u003c\/li\u003e\n\u003cli\u003eVentilation around controls\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eControls, Temperature, 140 degrees F Fixed Open Temperature, 110 degrees F Fixed Close Temperature, Open on Rise Switch Action, Auto Reset, 3.12\" Insertion Length, Board Mounted 1\/2\" Bimetal Disc Limit Switch\u003c\/span\u003e\u003c\/p\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":45887390777410,"sku":"3L09-3","price":26.45,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot2026-11-02235253.png?v=1793688783"},{"product_id":"3l09-4-copeland-comfort-control-white-rodgers-board-mount-limit-control-150f","title":"3L09-4 Copeland Comfort Control (White Rodgers) Board Mount Limit Control 150F","description":"\u003ch1\u003e3L09-4 Copeland Comfort Control (White Rodgers) Board Mount Limit Control 150F\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3L09-4 Board Mount Limit Control (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature safety switch designed to protect HVAC equipment, electrical controls, and heating systems from overheating. Featuring a \u003cstrong\u003e150°F fixed open temperature\u003c\/strong\u003e, this compact \u003cstrong\u003eboard-mounted bimetal limit switch\u003c\/strong\u003e interrupts the circuit when excessive temperatures are detected and automatically restores operation after cooling, helping protect sensitive components from heat-related damage.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3L09-4\u003c\/li\u003e\n\u003cli\u003e3L094\u003c\/li\u003e\n\u003cli\u003eL150F\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3L09-4\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3L09-4\u003c\/li\u003e\n\u003cli\u003e74T Series Board Mount Limit Control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3L09-4\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eGoodman\u003c\/li\u003e\n\u003cli\u003eRheem\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in HVAC and heating equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProtect control boards from overheating\u003c\/li\u003e\n\u003cli\u003eOpen safety circuits at elevated temperatures\u003c\/li\u003e\n\u003cli\u003eAutomatically restore operation after cooling\u003c\/li\u003e\n\u003cli\u003eProtect transformers and electrical compartments\u003c\/li\u003e\n\u003cli\u003ePrevent temperature-related component failures\u003c\/li\u003e\n\u003cli\u003eProvide automatic thermal protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBoard Mount Limit Switch\u003c\/li\u003e\n\u003cli\u003eSnap Disc Thermostat\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eHigh Limit Control\u003c\/li\u003e\n\u003cli\u003eTemperature Sensor\u003c\/li\u003e\n\u003cli\u003eSafety Cutoff Switch\u003c\/li\u003e\n\u003cli\u003eElectrical Control Assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3L09-4 is an \u003cstrong\u003eautomatic reset, open-on-rise board mount limit control\u003c\/strong\u003e utilizing a compact bimetal snap disc. Under normal operating conditions, the contacts remain closed and open when the sensing surface reaches \u003cstrong\u003e150°F\u003c\/strong\u003e, interrupting the circuit to prevent overheating. Once the temperature falls below the reset point, the switch automatically closes and restores operation.\u003c\/p\u003e\n\u003cp\u003eBoard-mounted limit controls are commonly used in furnace control compartments, blower sections, transformer protection circuits, and OEM HVAC equipment where compact, dependable overtemperature protection is required.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEquipment shuts down unexpectedly\u003c\/li\u003e\n\u003cli\u003eOpen safety circuit fault\u003c\/li\u003e\n\u003cli\u003eIntermittent operation\u003c\/li\u003e\n\u003cli\u003eRepeated temperature-related lockouts\u003c\/li\u003e\n\u003cli\u003eControl board overheating faults\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eFailure to reset properly\u003c\/li\u003e\n\u003cli\u003eElectrical compartment overheating\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify temperature ratings match the original component.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \u003cstrong\u003eOpen on Rise\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eMount securely in the original location.\u003c\/li\u003e\n\u003cli\u003eInspect terminals for corrosion or heat damage.\u003c\/li\u003e\n\u003cli\u003eVerify airflow around electrical components.\u003c\/li\u003e\n\u003cli\u003eTest continuity after installation.\u003c\/li\u003e\n\u003cli\u003eConfirm proper operation through a complete heating cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eControl board condition\u003c\/li\u003e\n\u003cli\u003eTransformer temperature\u003c\/li\u003e\n\u003cli\u003eWiring harness connections\u003c\/li\u003e\n\u003cli\u003eElectrical terminals\u003c\/li\u003e\n\u003cli\u003eBlower motor operation\u003c\/li\u003e\n\u003cli\u003eAirflow restrictions\u003c\/li\u003e\n\u003cli\u003eVentilation around controls\u003c\/li\u003e\n\u003cli\u003eRelay condition\u003c\/li\u003e\n\u003cli\u003eEquipment operating temperatures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":45887390810178,"sku":"3L09-4","price":25.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot2026-11-03085241.png?v=1793721172"},{"product_id":"3l09-5","title":"3L09-5 Copeland Comfort Control (White Rodgers) Board Mount Limit Control 140F","description":"\u003ch1\u003e3L09-5 Copeland Comfort Control (White Rodgers) Board Mount Limit Control 140F\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3L09-5 Board Mount Limit Control (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature safety switch designed to protect HVAC equipment, control boards, transformers, and electrical compartments from overheating. Featuring a \u003cstrong\u003e140°F fixed open temperature\u003c\/strong\u003e, this compact \u003cstrong\u003eboard-mounted bimetal limit switch\u003c\/strong\u003e interrupts the circuit when excessive temperatures are detected and automatically restores operation after cooling, helping safeguard sensitive electrical components and improve equipment reliability.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3L09-5\u003c\/li\u003e\n\u003cli\u003e3L095\u003c\/li\u003e\n\u003cli\u003eL140F\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3L09-5\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3L09-5\u003c\/li\u003e\n\u003cli\u003e74T Series Board Mount Limit Control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3L09-5\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eGoodman\u003c\/li\u003e\n\u003cli\u003eRheem\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in HVAC and electrical equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProtect control boards from overheating\u003c\/li\u003e\n\u003cli\u003eInterrupt circuits at elevated temperatures\u003c\/li\u003e\n\u003cli\u003eAutomatically restore operation after cooling\u003c\/li\u003e\n\u003cli\u003eSafeguard transformers and electrical compartments\u003c\/li\u003e\n\u003cli\u003ePrevent heat-related component failures\u003c\/li\u003e\n\u003cli\u003eProvide automatic thermal protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBoard Mount Limit Switch\u003c\/li\u003e\n\u003cli\u003eSnap Disc Thermostat\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eHigh Limit Control\u003c\/li\u003e\n\u003cli\u003eTemperature Sensor\u003c\/li\u003e\n\u003cli\u003eSafety Cutoff Switch\u003c\/li\u003e\n\u003cli\u003eElectrical Control Assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3L09-5 is an \u003cstrong\u003eautomatic reset, open-on-rise board mount limit control\u003c\/strong\u003e utilizing a compact bimetal sensing disc. The switch remains closed during normal operation and opens when the sensing surface reaches \u003cstrong\u003e140°F\u003c\/strong\u003e, interrupting the circuit to protect equipment from excessive temperatures. Once temperatures fall below the reset point, the contacts automatically close and restore normal operation.\u003c\/p\u003e\n\u003cp\u003eBoard-mounted limit controls are commonly found on control boards, transformers, blower compartments, fan coil units, and other OEM HVAC equipment where compact overtemperature protection is required.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEquipment shuts down unexpectedly\u003c\/li\u003e\n\u003cli\u003eOpen safety circuit faults\u003c\/li\u003e\n\u003cli\u003eIntermittent operation\u003c\/li\u003e\n\u003cli\u003eRepeated high-temperature shutdowns\u003c\/li\u003e\n\u003cli\u003eControl board overheating errors\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eFailure to reset properly\u003c\/li\u003e\n\u003cli\u003eElectrical compartment overheating\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify temperature ratings match the original component.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \u003cstrong\u003eOpen on Rise\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eMount securely in the original location.\u003c\/li\u003e\n\u003cli\u003eInspect terminals for corrosion or heat damage.\u003c\/li\u003e\n\u003cli\u003eVerify adequate airflow around electrical components.\u003c\/li\u003e\n\u003cli\u003eCheck continuity after installation.\u003c\/li\u003e\n\u003cli\u003eTest operation through a complete equipment cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eControl board condition\u003c\/li\u003e\n\u003cli\u003eTransformer temperature\u003c\/li\u003e\n\u003cli\u003eWiring harness connections\u003c\/li\u003e\n\u003cli\u003eElectrical terminals\u003c\/li\u003e\n\u003cli\u003eBlower motor operation\u003c\/li\u003e\n\u003cli\u003eAirflow restrictions\u003c\/li\u003e\n\u003cli\u003eVentilation around controls\u003c\/li\u003e\n\u003cli\u003eRelay condition\u003c\/li\u003e\n\u003cli\u003eEquipment operating temperatures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003eControls, Temperature, 160 degrees F Fixed Open Temperature, 140 degrees F Fixed Close Temperature, Open on Rise Switch Action, Auto Reset, 3.12\" Insertion Length, Board Mounted 1\/2\" Bimetal Disc Limit Switch\u003c\/span\u003e\u003c\/p\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":45887390842946,"sku":"3L09-5","price":25.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot2026-11-03094505_781fc140-534e-410b-8ac9-5763a9de7da9.png?v=1793724546"},{"product_id":"3l09-6","title":"3L09-6 Copeland Comfort Control (White Rodgers) Board Mount Limit Control 170F","description":"\u003ch1\u003e3L09-6 Copeland Comfort Control (White Rodgers) Board Mount Limit Control 170F\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3L09-6 Board Mount Limit Control (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature safety switch designed to protect HVAC equipment, control boards, transformers, and electrical compartments from overheating. Featuring a \u003cstrong\u003e170°F fixed open temperature\u003c\/strong\u003e, this compact \u003cstrong\u003eboard-mounted bimetal limit switch\u003c\/strong\u003e interrupts the circuit when excessive temperatures are detected and automatically restores operation after cooling, helping safeguard sensitive electrical components and ensure reliable system performance.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3L09-6\u003c\/li\u003e\n\u003cli\u003e3L096\u003c\/li\u003e\n\u003cli\u003eL170F\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3L09-6\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3L09-6\u003c\/li\u003e\n\u003cli\u003e74T Series Board Mount Limit Control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3L09-6\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eGoodman\u003c\/li\u003e\n\u003cli\u003eRheem\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in HVAC and electrical equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProtect control boards from overheating\u003c\/li\u003e\n\u003cli\u003eInterrupt safety circuits at elevated temperatures\u003c\/li\u003e\n\u003cli\u003eAutomatically restore operation after cooling\u003c\/li\u003e\n\u003cli\u003eSafeguard transformers and electrical compartments\u003c\/li\u003e\n\u003cli\u003ePrevent temperature-related component failures\u003c\/li\u003e\n\u003cli\u003eProvide automatic overtemperature protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBoard Mount Limit Switch\u003c\/li\u003e\n\u003cli\u003eSnap Disc Thermostat\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eHigh Limit Control\u003c\/li\u003e\n\u003cli\u003eTemperature Sensor\u003c\/li\u003e\n\u003cli\u003eSafety Cutoff Switch\u003c\/li\u003e\n\u003cli\u003eElectrical Control Assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3L09-6 is an \u003cstrong\u003eautomatic reset, open-on-rise board mount limit control\u003c\/strong\u003e utilizing a compact bimetal sensing disc. Under normal operating conditions, the contacts remain closed and open when the sensing surface reaches \u003cstrong\u003e170°F\u003c\/strong\u003e, interrupting the circuit to protect equipment from overheating. Once temperatures fall below the reset point, the contacts automatically reclose and restore normal operation.\u003c\/p\u003e\n\u003cp\u003eBoard-mounted limit controls are commonly used in blower compartments, transformer protection circuits, air handlers, control panels, and OEM HVAC equipment where reliable thermal protection is required in a compact footprint.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEquipment shuts down unexpectedly\u003c\/li\u003e\n\u003cli\u003eOpen safety circuit faults\u003c\/li\u003e\n\u003cli\u003eIntermittent operation\u003c\/li\u003e\n\u003cli\u003eRepeated high-temperature shutdowns\u003c\/li\u003e\n\u003cli\u003eControl board overheating faults\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eFailure to reset properly\u003c\/li\u003e\n\u003cli\u003eElectrical compartment overheating\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify temperature ratings match the original component.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \u003cstrong\u003eOpen on Rise\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eMount securely in the original location.\u003c\/li\u003e\n\u003cli\u003eInspect terminals for corrosion or heat damage.\u003c\/li\u003e\n\u003cli\u003eVerify adequate airflow around electrical components.\u003c\/li\u003e\n\u003cli\u003eCheck continuity after installation.\u003c\/li\u003e\n\u003cli\u003eTest system operation through a complete operating cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eControl board condition\u003c\/li\u003e\n\u003cli\u003eTransformer temperature\u003c\/li\u003e\n\u003cli\u003eWiring harness connections\u003c\/li\u003e\n\u003cli\u003eElectrical terminals\u003c\/li\u003e\n\u003cli\u003eBlower motor operation\u003c\/li\u003e\n\u003cli\u003eAirflow restrictions\u003c\/li\u003e\n\u003cli\u003eVentilation around controls\u003c\/li\u003e\n\u003cli\u003eRelay condition\u003c\/li\u003e\n\u003cli\u003eEquipment operating temperatures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eControls, Temperature, 170 degrees F Fixed Open Temperature, 130 degrees F Fixed Close Temperature, Open on Rise Switch Action, Auto Reset, 3.12\" Insertion Length, Board Mounted 1\/2\" Bimetal Disc Limit Switch\u003c\/span\u003e\u003c\/p\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":45887390875714,"sku":"3L09-6","price":24.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot2026-11-03095051_24826eea-dc1f-4fee-97f9-2e061f1d7ced.png?v=1793726951"},{"product_id":"3l09-7","title":"3L09-7 Copeland Comfort Control (White Rodgers) Board Mount Limit Control 175F","description":"\u003ch1\u003e3L09-7 Copeland Comfort Control (White Rodgers) Board Mount Limit Control 175F\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3L09-7 Board Mount Limit Control (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature safety switch designed to protect HVAC equipment, control boards, transformers, and electrical compartments from overheating. Featuring a \u003cstrong\u003e175°F fixed open temperature\u003c\/strong\u003e, this compact \u003cstrong\u003eboard-mounted bimetal limit switch\u003c\/strong\u003e interrupts the circuit when excessive temperatures are detected and automatically restores operation after cooling, helping protect sensitive electrical components and maintain reliable equipment performance.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3L09-7\u003c\/li\u003e\n\u003cli\u003e3L097\u003c\/li\u003e\n\u003cli\u003eL175F\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3L09-7\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3L09-7\u003c\/li\u003e\n\u003cli\u003e74T Series Board Mount Limit Control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3L09-7\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eGoodman\u003c\/li\u003e\n\u003cli\u003eRheem\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in HVAC and electrical equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProtect control boards from overheating\u003c\/li\u003e\n\u003cli\u003eInterrupt safety circuits at elevated temperatures\u003c\/li\u003e\n\u003cli\u003eAutomatically restore operation after cooling\u003c\/li\u003e\n\u003cli\u003eProtect transformers and electrical components\u003c\/li\u003e\n\u003cli\u003ePrevent temperature-related component failure\u003c\/li\u003e\n\u003cli\u003eProvide automatic thermal protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBoard Mount Limit Switch\u003c\/li\u003e\n\u003cli\u003eSnap Disc Thermostat\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eHigh Limit Control\u003c\/li\u003e\n\u003cli\u003eTemperature Sensor\u003c\/li\u003e\n\u003cli\u003eSafety Cutoff Switch\u003c\/li\u003e\n\u003cli\u003eElectrical Control Assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3L09-7 is an \u003cstrong\u003eautomatic reset, open-on-rise board mount limit control\u003c\/strong\u003e utilizing a compact bimetal sensing disc. Under normal operating conditions, the contacts remain closed and open when the sensing surface reaches \u003cstrong\u003e175°F\u003c\/strong\u003e, interrupting the circuit to prevent overheating. Once temperatures fall below the reset threshold, the contacts automatically reclose and restore normal operation.\u003c\/p\u003e\n\u003cp\u003eThis style of board-mounted limit switch is commonly used on furnace control boards, transformers, blower housings, electrical compartments, and OEM HVAC equipment where compact and dependable thermal protection is required.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEquipment shuts down unexpectedly\u003c\/li\u003e\n\u003cli\u003eOpen safety circuit faults\u003c\/li\u003e\n\u003cli\u003eIntermittent operation\u003c\/li\u003e\n\u003cli\u003eRepeated high-temperature shutdowns\u003c\/li\u003e\n\u003cli\u003eControl board overheating faults\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eFailure to reset properly\u003c\/li\u003e\n\u003cli\u003eElectrical compartment overheating\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify temperature ratings match the original component.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \u003cstrong\u003eOpen on Rise\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eMount securely in the original location.\u003c\/li\u003e\n\u003cli\u003eInspect terminals for corrosion or heat damage.\u003c\/li\u003e\n\u003cli\u003eVerify airflow around electrical components.\u003c\/li\u003e\n\u003cli\u003eTest continuity after installation.\u003c\/li\u003e\n\u003cli\u003eConfirm proper operation through a complete equipment cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eControl board condition\u003c\/li\u003e\n\u003cli\u003eTransformer temperature\u003c\/li\u003e\n\u003cli\u003eWiring harness connections\u003c\/li\u003e\n\u003cli\u003eElectrical terminals\u003c\/li\u003e\n\u003cli\u003eBlower motor operation\u003c\/li\u003e\n\u003cli\u003eAirflow restrictions\u003c\/li\u003e\n\u003cli\u003eVentilation around controls\u003c\/li\u003e\n\u003cli\u003eRelay condition\u003c\/li\u003e\n\u003cli\u003eEquipment operating temperatures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":45887390908482,"sku":"3L09-7","price":24.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot2026-11-03104606.png?v=1793727976"},{"product_id":"3l09-8-copeland-comfort-control-white-rodgers-board-mount-limit-control-180f","title":"3L09-8 Copeland Comfort Control (White Rodgers) Board Mount Limit Control 180F","description":"\u003ch1\u003e3L09-8 Copeland Comfort Control (White Rodgers) Board Mount Limit Control 180F \u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3L09-8 Board Mount Limit Control (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature safety switch designed to protect HVAC equipment, control boards, transformers, and electrical compartments from overheating. Featuring a \u003cstrong\u003e180°F fixed open temperature\u003c\/strong\u003e, this compact \u003cstrong\u003eboard-mounted bimetal limit switch\u003c\/strong\u003e interrupts the circuit when excessive temperatures are detected and automatically restores operation after cooling, helping safeguard sensitive electrical components and ensure reliable system performance.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3L09-8\u003c\/li\u003e\n\u003cli\u003e3L098\u003c\/li\u003e\n\u003cli\u003eL180F\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3L09-8\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3L09-8\u003c\/li\u003e\n\u003cli\u003e74T Series Board Mount Limit Control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3L09-8\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eGoodman\u003c\/li\u003e\n\u003cli\u003eRheem\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in HVAC and electrical equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProtect control boards from overheating\u003c\/li\u003e\n\u003cli\u003eInterrupt safety circuits at elevated temperatures\u003c\/li\u003e\n\u003cli\u003eAutomatically restore operation after cooling\u003c\/li\u003e\n\u003cli\u003eProtect transformers and electrical components\u003c\/li\u003e\n\u003cli\u003ePrevent temperature-related component failure\u003c\/li\u003e\n\u003cli\u003eProvide automatic thermal protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBoard Mount Limit Switch\u003c\/li\u003e\n\u003cli\u003eSnap Disc Thermostat\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eHigh Limit Control\u003c\/li\u003e\n\u003cli\u003eTemperature Sensor\u003c\/li\u003e\n\u003cli\u003eSafety Cutoff Switch\u003c\/li\u003e\n\u003cli\u003eElectrical Control Assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3L09-8 is an \u003cstrong\u003eautomatic reset, open-on-rise board mount limit control\u003c\/strong\u003e utilizing a compact bimetal sensing disc. Under normal operating conditions, the contacts remain closed and open when the sensing surface reaches \u003cstrong\u003e180°F\u003c\/strong\u003e, interrupting the circuit to prevent overheating. Once temperatures fall below the reset threshold, the contacts automatically reclose and restore normal operation.\u003c\/p\u003e\n\u003cp\u003eThis limit control is commonly found in control board assemblies, blower sections, transformer compartments, air handlers, and OEM HVAC equipment requiring dependable overtemperature protection in a compact package.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEquipment shuts down unexpectedly\u003c\/li\u003e\n\u003cli\u003eOpen safety circuit faults\u003c\/li\u003e\n\u003cli\u003eIntermittent operation\u003c\/li\u003e\n\u003cli\u003eRepeated high-temperature shutdowns\u003c\/li\u003e\n\u003cli\u003eControl board overheating faults\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eFailure to reset properly\u003c\/li\u003e\n\u003cli\u003eElectrical compartment overheating\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify temperature ratings match the original component.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \u003cstrong\u003eOpen on Rise\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eMount securely in the original location.\u003c\/li\u003e\n\u003cli\u003eInspect terminals for corrosion or heat damage.\u003c\/li\u003e\n\u003cli\u003eVerify proper airflow around electrical components.\u003c\/li\u003e\n\u003cli\u003eTest continuity after installation.\u003c\/li\u003e\n\u003cli\u003eConfirm proper operation through a complete equipment cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eControl board condition\u003c\/li\u003e\n\u003cli\u003eTransformer temperature\u003c\/li\u003e\n\u003cli\u003eWiring harness connections\u003c\/li\u003e\n\u003cli\u003eElectrical terminals\u003c\/li\u003e\n\u003cli\u003eBlower motor operation\u003c\/li\u003e\n\u003cli\u003eAirflow restrictions\u003c\/li\u003e\n\u003cli\u003eVentilation around controls\u003c\/li\u003e\n\u003cli\u003eRelay condition\u003c\/li\u003e\n\u003cli\u003eEquipment operating temperatures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":45887390941250,"sku":"3L09-8","price":24.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot2026-11-03104606_24d4a45a-67f4-4a69-a599-ac4b7de684fb.png?v=1793728539"},{"product_id":"3l09-9","title":"3L09-9 Copeland Comfort Control (White Rodgers) Board Mount Limit Control 190F","description":"\u003ch1\u003e3L09-9 Copeland Comfort Control (White Rodgers) Board Mount Limit Control 190F\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3L09-9 Board Mount Limit Control (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature safety switch designed to protect HVAC equipment, control boards, transformers, and electrical compartments from overheating. Featuring a \u003cstrong\u003e190°F fixed open temperature\u003c\/strong\u003e and \u003cstrong\u003e170°F fixed close temperature\u003c\/strong\u003e, this compact \u003cstrong\u003eboard-mounted 1\/2-inch bimetal disc limit switch\u003c\/strong\u003e interrupts the circuit when excessive temperatures are detected and automatically restores operation after cooling. Its \u003cstrong\u003e3.12-inch insertion length\u003c\/strong\u003e provides reliable temperature sensing for OEM and replacement applications.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3L09-9\u003c\/li\u003e\n\u003cli\u003e3L099\u003c\/li\u003e\n\u003cli\u003eL190F\u003c\/li\u003e\n\u003cli\u003e74T11 Series\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3L09-9\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3L09-9\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3L09-9\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eGoodman\u003c\/li\u003e\n\u003cli\u003eRheem\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in HVAC and electrical equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProtect control boards from overheating\u003c\/li\u003e\n\u003cli\u003eOpen safety circuits at 190°F\u003c\/li\u003e\n\u003cli\u003eAutomatically reclose at 170°F\u003c\/li\u003e\n\u003cli\u003eProtect transformers and electrical enclosures\u003c\/li\u003e\n\u003cli\u003ePrevent temperature-related component failures\u003c\/li\u003e\n\u003cli\u003eProvide automatic thermal protection for HVAC controls\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBoard Mount Limit Switch\u003c\/li\u003e\n\u003cli\u003eSnap Disc Thermostat\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eHigh Limit Control\u003c\/li\u003e\n\u003cli\u003eTemperature Sensor\u003c\/li\u003e\n\u003cli\u003eSafety Cutoff Switch\u003c\/li\u003e\n\u003cli\u003eElectrical Control Assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3L09-9 is an \u003cstrong\u003eautomatic reset, open-on-rise board mount limit control\u003c\/strong\u003e utilizing a \u003cstrong\u003e1\/2-inch bimetal sensing disc\u003c\/strong\u003e and \u003cstrong\u003e3.12-inch insertion length\u003c\/strong\u003e. The contacts remain closed during normal operation and open when the sensing temperature reaches \u003cstrong\u003e190°F\u003c\/strong\u003e, interrupting the circuit to prevent overheating. Once temperatures decrease to approximately \u003cstrong\u003e170°F\u003c\/strong\u003e, the contacts automatically reset and restore operation.\u003c\/p\u003e\n\u003cp\u003eThis style of limit control is commonly used for protecting control boards, transformer compartments, electrical enclosures, air handlers, and OEM HVAC equipment requiring compact, dependable temperature protection.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEquipment shuts down unexpectedly\u003c\/li\u003e\n\u003cli\u003eOpen safety circuit faults\u003c\/li\u003e\n\u003cli\u003eIntermittent operation\u003c\/li\u003e\n\u003cli\u003eRepeated high-temperature shutdowns\u003c\/li\u003e\n\u003cli\u003eControl board overheating faults\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eFailure to reset properly\u003c\/li\u003e\n\u003cli\u003eElectrical compartment overheating\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify the replacement temperature ratings match the original part.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \u003cstrong\u003eOpen on Rise\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eEnsure proper insertion depth during installation.\u003c\/li\u003e\n\u003cli\u003eInspect terminals for heat damage or corrosion.\u003c\/li\u003e\n\u003cli\u003eVerify adequate airflow around electrical components.\u003c\/li\u003e\n\u003cli\u003eCheck continuity after installation.\u003c\/li\u003e\n\u003cli\u003eTest operation through a complete equipment cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eControl board condition\u003c\/li\u003e\n\u003cli\u003eTransformer temperature\u003c\/li\u003e\n\u003cli\u003eWiring harness connections\u003c\/li\u003e\n\u003cli\u003eElectrical terminals\u003c\/li\u003e\n\u003cli\u003eBlower motor operation\u003c\/li\u003e\n\u003cli\u003eAirflow restrictions\u003c\/li\u003e\n\u003cli\u003eVentilation around controls\u003c\/li\u003e\n\u003cli\u003eRelay condition\u003c\/li\u003e\n\u003cli\u003eEquipment operating temperatures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eControls, Temperature, 190 degrees F Fixed Open Temperature, 170 degrees F Fixed Close Temperature, Open on Rise Switch Action, Auto Reset, 3.12\" Insertion Length, Board Mounted 1\/2\" Bimetal Disc Limit Switch\u003c\/span\u003e\u003c\/p\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":45887390974018,"sku":"3L09-9","price":24.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot2026-11-03111735_6428943b-df24-4134-b5ac-c89d18ff1cc0.png?v=1793730037"},{"product_id":"3l09-10-copeland-comfort-control-white-rodgers-board-mount-limit-control-200f","title":"3L09-10 Copeland Comfort Control (White Rodgers) Board Mount Limit Control 200F","description":"\u003ch1\u003e3L09-10 Copeland Comfort Control (White Rodgers) Board Mount Limit Control 200F\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3L09-10 Board Mount Limit Control (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature safety switch designed to protect HVAC equipment, control boards, transformers, and electrical compartments from overheating. Featuring a \u003cstrong\u003e200°F fixed open temperature\u003c\/strong\u003e, this compact \u003cstrong\u003eboard-mounted bimetal limit switch\u003c\/strong\u003e interrupts the circuit when excessive temperatures are detected and automatically restores operation after cooling, helping protect sensitive components and ensure reliable system performance.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3L09-10\u003c\/li\u003e\n\u003cli\u003e3L0910\u003c\/li\u003e\n\u003cli\u003eL200F\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3L09-10\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3L09-10\u003c\/li\u003e\n\u003cli\u003e74T Series Board Mount Limit Control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3L09-10\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eGoodman\u003c\/li\u003e\n\u003cli\u003eRheem\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in HVAC and electrical equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProtect control boards from overheating\u003c\/li\u003e\n\u003cli\u003eInterrupt safety circuits at elevated temperatures\u003c\/li\u003e\n\u003cli\u003eAutomatically restore operation after cooling\u003c\/li\u003e\n\u003cli\u003eProtect transformers and electrical enclosures\u003c\/li\u003e\n\u003cli\u003ePrevent temperature-related component failures\u003c\/li\u003e\n\u003cli\u003eProvide automatic thermal protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBoard Mount Limit Switch\u003c\/li\u003e\n\u003cli\u003eSnap Disc Thermostat\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eHigh Limit Control\u003c\/li\u003e\n\u003cli\u003eTemperature Sensor\u003c\/li\u003e\n\u003cli\u003eSafety Cutoff Switch\u003c\/li\u003e\n\u003cli\u003eElectrical Control Assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3L09-10 is an \u003cstrong\u003eautomatic reset, open-on-rise board mount limit control\u003c\/strong\u003e utilizing a compact bimetal sensing disc. Under normal operating conditions, the contacts remain closed and open when the sensing surface reaches \u003cstrong\u003e200°F\u003c\/strong\u003e, interrupting the circuit to protect equipment from excessive temperatures. Once the temperature falls below the reset point, the contacts automatically reclose and restore circuit operation.\u003c\/p\u003e\n\u003cp\u003eBoard-mounted limit controls are commonly used in control boards, transformer compartments, blower sections, electrical cabinets, and OEM HVAC equipment where dependable overtemperature protection is required in a compact package.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEquipment shuts down unexpectedly\u003c\/li\u003e\n\u003cli\u003eOpen safety circuit faults\u003c\/li\u003e\n\u003cli\u003eIntermittent operation\u003c\/li\u003e\n\u003cli\u003eRepeated high-temperature shutdowns\u003c\/li\u003e\n\u003cli\u003eControl board overheating faults\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eFailure to reset properly\u003c\/li\u003e\n\u003cli\u003eElectrical compartment overheating\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify temperature ratings match the original component.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \u003cstrong\u003eOpen on Rise\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eMount securely in the original location.\u003c\/li\u003e\n\u003cli\u003eInspect terminals for corrosion or heat damage.\u003c\/li\u003e\n\u003cli\u003eVerify adequate airflow around electrical components.\u003c\/li\u003e\n\u003cli\u003eCheck continuity after installation.\u003c\/li\u003e\n\u003cli\u003eTest operation through a complete equipment cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eControl board condition\u003c\/li\u003e\n\u003cli\u003eTransformer temperature\u003c\/li\u003e\n\u003cli\u003eWiring harness connections\u003c\/li\u003e\n\u003cli\u003eElectrical terminals\u003c\/li\u003e\n\u003cli\u003eBlower motor operation\u003c\/li\u003e\n\u003cli\u003eAirflow restrictions\u003c\/li\u003e\n\u003cli\u003eVentilation around controls\u003c\/li\u003e\n\u003cli\u003eRelay condition\u003c\/li\u003e\n\u003cli\u003eEquipment operating temperatures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":45887391006786,"sku":"3L09-10","price":24.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot2026-11-03113826.png?v=1793731273"},{"product_id":"3l09-11-copeland-comfort-control-white-rodgers-board-mount-limit-control-210f","title":"3L09-11 Copeland Comfort Control (White Rodgers) Board Mount Limit Control 210F","description":"\u003ch1\u003e3L09-11 Copeland Comfort Control (White Rodgers) Board Mount Limit Control 210F\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3L09-11 Board Mount Limit Control (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature safety switch designed to protect HVAC equipment, control boards, transformers, and electrical compartments from excessive temperatures. Featuring a \u003cstrong\u003e210°F fixed open temperature\u003c\/strong\u003e, this compact \u003cstrong\u003eboard-mounted bimetal limit switch\u003c\/strong\u003e interrupts the circuit when overheating conditions occur and automatically restores operation after cooling, helping protect sensitive electrical components and improve equipment reliability.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3L09-11\u003c\/li\u003e\n\u003cli\u003e3L0911\u003c\/li\u003e\n\u003cli\u003eL210F\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3L09-11\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3L09-11\u003c\/li\u003e\n\u003cli\u003e74T Series Board Mount Limit Control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3L09-11\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eGoodman\u003c\/li\u003e\n\u003cli\u003eRheem\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in HVAC and electrical equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProtect control boards from overheating\u003c\/li\u003e\n\u003cli\u003eInterrupt safety circuits at elevated temperatures\u003c\/li\u003e\n\u003cli\u003eAutomatically restore operation after cooling\u003c\/li\u003e\n\u003cli\u003eProtect transformers and electrical enclosures\u003c\/li\u003e\n\u003cli\u003ePrevent temperature-related component failures\u003c\/li\u003e\n\u003cli\u003eProvide automatic thermal protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBoard Mount Limit Switch\u003c\/li\u003e\n\u003cli\u003eSnap Disc Thermostat\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eHigh Limit Control\u003c\/li\u003e\n\u003cli\u003eTemperature Sensor\u003c\/li\u003e\n\u003cli\u003eSafety Cutoff Switch\u003c\/li\u003e\n\u003cli\u003eElectrical Control Assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3L09-11 is an \u003cstrong\u003eautomatic reset, open-on-rise board mount limit control\u003c\/strong\u003e utilizing a compact bimetal sensing disc. Under normal operating conditions, the contacts remain closed and open when the sensing surface reaches \u003cstrong\u003e210°F\u003c\/strong\u003e, interrupting the circuit to prevent overheating. Once temperatures drop below the switch reset point, the contacts automatically reclose and restore normal operation.\u003c\/p\u003e\n\u003cp\u003eBoard-mounted limit controls are commonly used in electrical compartments, transformer protection circuits, blower assemblies, control boards, and OEM HVAC equipment where dependable overtemperature protection is required in a compact footprint.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEquipment shuts down unexpectedly\u003c\/li\u003e\n\u003cli\u003eOpen safety circuit faults\u003c\/li\u003e\n\u003cli\u003eIntermittent operation\u003c\/li\u003e\n\u003cli\u003eRepeated high-temperature shutdowns\u003c\/li\u003e\n\u003cli\u003eControl board overheating faults\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eFailure to reset properly\u003c\/li\u003e\n\u003cli\u003eElectrical compartment overheating\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eVerify the replacement temperature rating matches the original component.\u003c\/li\u003e\n\u003cli\u003eConfirm switch action is \u003cstrong\u003eOpen on Rise\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eMount securely in the original location.\u003c\/li\u003e\n\u003cli\u003eInspect terminals for corrosion or heat damage.\u003c\/li\u003e\n\u003cli\u003eVerify proper airflow around electrical components.\u003c\/li\u003e\n\u003cli\u003eCheck continuity after installation.\u003c\/li\u003e\n\u003cli\u003eTest operation through a complete equipment cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eControl board condition\u003c\/li\u003e\n\u003cli\u003eTransformer temperature\u003c\/li\u003e\n\u003cli\u003eWiring harness connections\u003c\/li\u003e\n\u003cli\u003eElectrical terminals\u003c\/li\u003e\n\u003cli\u003eBlower motor operation\u003c\/li\u003e\n\u003cli\u003eAirflow restrictions\u003c\/li\u003e\n\u003cli\u003eVentilation around controls\u003c\/li\u003e\n\u003cli\u003eRelay condition\u003c\/li\u003e\n\u003cli\u003eEquipment operating temperatures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":45887391039554,"sku":"3L09-11","price":24.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot2026-11-03113826_369c1613-fb90-4c80-8b4e-c89d60c63e77.png?v=1793734230"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/collections\/Screenshot_2026-11-02_205104.png?v=1793742725","url":"https:\/\/hvacpartstore.com\/collections\/fan-and-limit-cross-reference.oembed","provider":"HVACpartstore","version":"1.0","type":"link"}