{"product_id":"543-047","title":"543-047","description":"This 3-inch high limit switch is a vital safety component designed for residential and commercial heating systems. Functioning as a thermal safeguard, this furnace limit control monitors internal temperatures to prevent overheating. If the heat exchanger reaches a critical temperature, the switch automatically breaks the electrical circuit to the gas valve or heating element, protecting your HVAC equipment from damage and ensuring home safety. Featuring a fixed temperature setting of 145°F with a 20°F differential, this sensor ensures reliable operation and resets once the system has cooled to a safe level. It is a common replacement part for forced-air furnaces and air handlers experiencing frequent cycling or safety lockout issues.\u003cbr\u003e\nType: HVAC High Limit Control Switch\u003cbr\u003e\nSize: 3-inch insertion depth\u003cbr\u003e\nDimensions: 3 inches\u003cbr\u003e\nApplication: Used in gas furnaces, electric furnaces, and air handlers as a primary safety over-temperature cutout.\u003cbr\u003e\nSpecifications: Trip Temperature: 145°F (Normally Closed); Reset Differential: 20°F; Switch Type: L-Task limit control","brand":"BCFurnace","offers":[{"title":"3\" HIGH LIMIT SWITCH L145-20F \/ 543-047","offer_id":47251550667037,"sku":null,"price":68.33,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L145-20F \/ 47-25349-11","offer_id":47251550699805,"sku":null,"price":68.33,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/7298\/9981\/files\/a1b5c0e600a045ec9b5a6ab9ee808306.webp?v=1773958993","url":"https:\/\/bcfurnace.myshopify.com\/products\/543-047","provider":"BCFurnace","version":"1.0","type":"link"}