{"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","url":"https:\/\/hvacpartstore.com\/products\/3l01-190-copeland-comfort-control-white-rodgers-limit-switch-l190-40f","provider":"HVACpartstore","version":"1.0","type":"link"}