{"product_id":"543-014","title":"543-014","description":"The 3-inch High Limit Switch (L125-30F) is a vital safety component designed for residential heating systems, including gas furnaces, electric furnaces, and air handlers. This thermal limit control switch acts as a failsafe by monitoring the internal temperature of your HVAC unit to prevent hazardous overheating. When the temperature reaches the factory-preset limit of 125°F, the switch automatically opens the electrical circuit to shut down the heat source. Once the unit cools down by the 30°F differential (resetting at 95°F), the switch closes to allow normal operation. If your heating system is short cycling or the blower motor is running constantly without heat, a faulty high limit sensor may be the cause. This high-quality replacement part ensures your equipment operates within safe parameters, protecting your heat exchanger and home from damage.\u003cbr\u003e\nType: High Limit Control Switch\u003cbr\u003e\nSize: 3-inch\u003cbr\u003e\nDimensions: 3 in\u003cbr\u003e\nApplication: Commonly used in forced-air furnaces and HVAC air handling units to monitor plenum temperatures and provide overheat protection.\u003cbr\u003e\nSpecifications: Opening Temperature: 125°F; Closing Temperature: 95°F; Temperature Differential: 30°F; Automatic Reset function.","brand":"BCFurnace","offers":[{"title":"3\" HIGH LIMIT SWITCH L125-30F \/ 543-014","offer_id":47251231605021,"sku":null,"price":68.83,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L125-30F \/ C340056P12","offer_id":47251231670557,"sku":null,"price":68.83,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L125-30F \/ L125-30F..","offer_id":47251231736093,"sku":null,"price":68.83,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L125-30F \/ SWT01274","offer_id":47251231637789,"sku":null,"price":68.83,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L125-30F \/ SWT1274","offer_id":47251231703325,"sku":null,"price":68.83,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/7298\/9981\/files\/9f58d1b98e694955842772da0f830e6c.webp?v=1773957855","url":"https:\/\/bcfurnace.myshopify.com\/products\/543-014","provider":"BCFurnace","version":"1.0","type":"link"}