{"product_id":"543-056","title":"543-056","description":"Ensure the safety and efficiency of your heating system with this premium 3-inch High Limit Switch (L140-30F). Designed as a vital safety cut-out for gas furnaces and HVAC units, this limit control prevents overheating by monitoring the temperature within the heat exchanger. If the air temperature reaches the 140°F threshold, the switch automatically breaks the electrical circuit to shut down the burner, protecting your appliance from damage and ensuring home safety. Featuring a 30°F differential, it automatically resets once the system cools to a safe operating temperature. This reliable replacement part is essential for resolving common furnace issues such as short-cycling or the blower motor running continuously due to a tripped limit sensor.\u003cbr\u003e\nType: High Limit Control Switch\u003cbr\u003e\nSize: 3-inch probe depth\u003cbr\u003e\nDimensions: 3 in\u003cbr\u003e\nApplication: Forced-air gas furnaces and HVAC heating systems requiring a fixed temperature limit control.\u003cbr\u003e\nSpecifications: Opening Temperature: 140°F; Temperature Differential: 30°F (Resets at 110°F); Normally Closed (NC) circuit configuration; 3-inch insertion depth.","brand":"BCFurnace","offers":[{"title":"3\" HIGH LIMIT SWITCH L140-30F \/ 543-056","offer_id":50156241027357,"sku":null,"price":153.54,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L140-30F \/ SWT01276","offer_id":50156241060125,"sku":null,"price":153.54,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L140-30F \/ SWT1276","offer_id":50156241092893,"sku":null,"price":153.54,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/7298\/9981\/files\/c7cf1062919b463ba7e77258a0614bfa.webp?v=1773961094","url":"https:\/\/bcfurnace.myshopify.com\/products\/543-056","provider":"BCFurnace","version":"1.0","type":"link"}