{"product_id":"543-048","title":"543-048","description":"Ensure the safe and efficient operation of your heating system with this premium 3-inch high limit switch. Designed as a critical safety component for furnaces and air handlers, this thermal limit control monitors internal temperatures to prevent overheating. The L190-20F switch is engineered to automatically interrupt power to the heating element or gas valve if the temperature reaches a maximum threshold of 190°F, protecting your appliance from damage and ensuring home safety. With a 20°F differential reset, this switch provides reliable performance for residential and commercial HVAC units. It is an essential replacement part for restoring proper function to heating systems experiencing frequent cycling or safety cutouts.\u003cbr\u003e\nType: High Limit Control Switch\u003cbr\u003e\nSize: 3 inch\u003cbr\u003e\nDimensions: 3 in\u003cbr\u003e\nApplication: Used in gas furnaces, electric heating systems, and HVAC air handlers to monitor heat levels and prevent thermal damage.\u003cbr\u003e\nSpecifications: Cut-out temperature: 190°F; Cut-in\/Differential: 20°F; Mounting style: Flange mount with 3-inch probe.","brand":"BCFurnace","offers":[{"title":"3\" HIGH LIMIT SWITCH L190-20F \/ 543-048","offer_id":47251826016541,"sku":null,"price":68.83,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L190-20F \/ 47-25350-01","offer_id":47251826049309,"sku":null,"price":68.83,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L190-20F \/ 472535001","offer_id":47251826082077,"sku":null,"price":68.83,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/7298\/9981\/files\/f9e931fa46cb435d9a85a3c89fb3332c.webp?v=1773959293","url":"https:\/\/bcfurnace.myshopify.com\/products\/543-048","provider":"BCFurnace","version":"1.0","type":"link"}