{"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","url":"https:\/\/hvacpartstore.com\/products\/3l01-300-copeland-comfort-control-white-rodgers-limit-l300-50f","provider":"HVACpartstore","version":"1.0","type":"link"}