{"product_id":"westinghouse-626458r-furnace-limit-switch-190f-2-pole","title":"Westinghouse 626458R Furnace Limit Switch 190F 2-pole","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe WESTINGHOUSE 626458R is a 2-pole furnace limit switch rated to 190 degrees F, designed for use in electric furnace applications. This limit switch serves as a critical safety component, interrupting the circuit when the furnace reaches its upper temperature threshold and resetting at 140 degrees F. The nickel construction and 3\/4-inch diameter disc format make it suitable for the demanding thermal cycling conditions found in residential electric furnace installations. Licensed HVAC technicians install this component as part of routine safety-device servicing or when diagnosing an overheat fault condition.\u003c\/p\u003e\u003cp\u003eThe 626458R is specifically applied in B5BV Series electric furnaces where a 2-pole, 190-degree F limit switch is required. Its reset differential — opening at 190 degrees F and closing at 140 degrees F — provides a 50-degree F span that helps prevent nuisance tripping while still protecting the heat exchanger and surrounding components from damage due to sustained overtemperature conditions. This part is appropriate for service calls involving limit switch replacement, furnace lockout diagnosis, or scheduled safety-device inspection.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eOpens at 190 degrees F, resets at 140 degrees F — 50-degree F differential\u003c\/li\u003e\n\u003cli\u003e2-pole configuration interrupts multiple circuit legs simultaneously\u003c\/li\u003e\n\u003cli\u003e3\/4-inch diameter disc format for direct OEM-style fitment\u003c\/li\u003e\n\u003cli\u003eNickel construction for thermal durability in high-cycle environments\u003c\/li\u003e\n\u003cli\u003eDesigned as a safety cutout to protect electric furnace components from overtemperature damage\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with B5BV Series electric furnaces as an OEM-style limit switch replacement.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eA licensed HVAC technician should perform limit switch replacement. Disconnect and lock out all electrical power to the furnace before beginning service. Verify the new switch orientation and pole configuration match the original before securing and reconnecting wiring. After installation, cycle the furnace and confirm normal limit switch operation before returning the unit to service.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwitch Type\u003c\/strong\u003e: Limit Switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoles\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpening Temperature\u003c\/strong\u003e: 190 degrees F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset Temperature\u003c\/strong\u003e: 140 degrees F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisc Diameter\u003c\/strong\u003e: 0.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Nickel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Electric Furnace\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: WESTINGHOUSE\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 626458R\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WESTINGHOUSE","offers":[{"title":"Default Title","offer_id":51284032422194,"sku":"626458R","price":33.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/309277841.jpg?v=1781066677","url":"https:\/\/voomisupply.com\/products\/westinghouse-626458r-furnace-limit-switch-190f-2-pole","provider":"Voomi Supply","version":"1.0","type":"link"}