{"product_id":"543-021","title":"543-021","description":"The 3\" High Limit Switch L150-30F is a vital safety control component used in residential and commercial heating systems. Designed to monitor internal temperatures, this thermal limit switch acts as a failsafe by automatically interrupting the electrical circuit if the furnace or air handler exceeds its safe operating limit of 150°F. This prevents overheating, protects the heat exchanger, and ensures the overall safety of your HVAC system. Once the internal temperature cools down by a 30°F differential, the switch automatically resets to restore normal operation. Ideal for repair and maintenance of forced-air furnaces, this high-quality replacement switch ensures reliable performance, consistent temperature regulation, and longevity for your heating equipment.\u003cbr\u003e\nType: High Limit Control Switch\u003cbr\u003e\nSize: 3-inch profile\u003cbr\u003e\nDimensions: 3 inches\u003cbr\u003e\nApplication: Used in forced-air furnaces, gas heating units, and HVAC air handlers to provide over-temperature protection and system safety.\u003cbr\u003e\nSpecifications: Opening Temperature: 150°F; Reset Differential: 30°F (Closes at 120°F); Reset Type: Automatic; Contact Configuration: Normally Closed (NC).","brand":"BCFurnace","offers":[{"title":"3\" HIGH LIMIT SWITCH L150-30F \/ 543-021","offer_id":47251276136733,"sku":null,"price":68.83,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L150-30F \/ 46105-001","offer_id":47251276398877,"sku":null,"price":68.83,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L150-30F \/ 46105001","offer_id":47251276431645,"sku":null,"price":68.83,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L150-30F \/ 56W20","offer_id":47251276300573,"sku":null,"price":68.83,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L150-30F \/ 56W2001","offer_id":47251276366109,"sku":null,"price":68.83,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L150-30F \/ C340366P17","offer_id":47251276267805,"sku":null,"price":68.83,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L150-30F \/ L150-30F.","offer_id":47251276235037,"sku":null,"price":68.83,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L150-30F \/ R46105-001","offer_id":47251276333341,"sku":null,"price":68.83,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L150-30F \/ R46105001","offer_id":47251276464413,"sku":null,"price":68.83,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L150-30F \/ SWT03411","offer_id":47251276169501,"sku":null,"price":68.83,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L150-30F \/ SWT3411","offer_id":47251276202269,"sku":null,"price":68.83,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/7298\/9981\/files\/39c3002a2473412ab05bb6d06a09e731.webp?v=1773958016","url":"https:\/\/bcfurnace.myshopify.com\/products\/543-021","provider":"BCFurnace","version":"1.0","type":"link"}