{"product_id":"543-160","title":"543-160","description":"This 3-inch high limit switch is a vital safety component designed for residential furnaces and HVAC heating systems. Functioning as a thermal cutout, this sensor monitors the temperature within the heat exchanger to prevent the unit from overheating. The L160-40F configuration is engineered to automatically trip and break the electrical circuit when the internal temperature reaches 160°F, protecting your equipment from heat-related damage and ensuring safe operation. Once the system cools down by 40°F (to 120°F), the switch automatically resets to allow normal heating cycles to resume. This replacement limit control is an essential fix for furnaces experiencing short-cycling or failing to ignite due to a faulty safety sensor.\u003cbr\u003e\nType: High Limit Control Switch\u003cbr\u003e\nSize: 3-inch insertion depth\u003cbr\u003e\nDimensions: 3 inches (probe depth)\u003cbr\u003e\nApplication: Forced-air furnaces, central heating units, and residential HVAC systems requiring a safety limit control to monitor heat exchanger temperatures.\u003cbr\u003e\nSpecifications: Open Temperature: 160°F; Close Temperature: 120°F (40°F Differential); Automatic Reset; Normally Closed (NC) circuit.","brand":"BCFurnace","offers":[{"title":"3\" HIGH LIMIT SWITCH L160-40F \/ 543-160","offer_id":47250954027293,"sku":null,"price":79.72,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L160-40F \/ 20001109","offer_id":47250954223901,"sku":null,"price":79.72,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L160-40F \/ 92L15","offer_id":47250954125597,"sku":null,"price":79.72,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L160-40F \/ 92L1501","offer_id":47250954158365,"sku":null,"price":79.72,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L160-40F \/ HH12ZB160","offer_id":47250954060061,"sku":null,"price":79.72,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L160-40F \/ L160-40F.","offer_id":47250954092829,"sku":null,"price":79.72,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L160-40F \/ R20001109","offer_id":47250954191133,"sku":null,"price":79.72,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/7298\/9981\/files\/f31517312d3d41468a3d09e74dd814e1.webp?v=1773957028","url":"https:\/\/bcfurnace.myshopify.com\/products\/543-160","provider":"BCFurnace","version":"1.0","type":"link"}