{"product_id":"543-028","title":"543-028","description":"This 3-inch high limit switch is a vital safety component designed for modern HVAC systems and forced-air furnaces. Engineered to prevent equipment overheating, the L150-30F thermal control monitors the internal plenum temperature of your heating unit. When the temperature exceeds the safe operating threshold of 150°F, the switch automatically opens to break the electrical circuit, protecting the heat exchanger and surrounding components from thermal damage. Once the system cools down by 30°F, the switch resets to restore normal functionality. This replacement sensor is essential for maintaining furnace reliability, ensuring home safety, and optimizing the performance of your residential or commercial heating system.\u003cbr\u003e\nType: High Limit Control Switch\u003cbr\u003e\nSize: 3-inch probe length\u003cbr\u003e\nDimensions: 3 inches\u003cbr\u003e\nApplication: Used as a safety cutout in residential furnaces, air handlers, and various HVAC heating applications to prevent system overheating.\u003cbr\u003e\nSpecifications: Open Temperature: 150°F; Close Temperature: 120°F; Temperature Differential: 30°F; Automatic reset; SPST (Single Pole Single Throw) configuration.","brand":"BCFurnace","offers":[{"title":"3\" HIGH LIMIT SWITCH L150-30F \/ 543-028","offer_id":47251288228125,"sku":null,"price":123.38,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L150-30F \/ 025-29041-002","offer_id":47251288326429,"sku":null,"price":123.38,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L150-30F \/ 02529041002","offer_id":47251288359197,"sku":null,"price":123.38,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L150-30F \/ L150-30F..","offer_id":47251288391965,"sku":null,"price":123.38,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L150-30F \/ S1-025-29041-002","offer_id":47251288293661,"sku":null,"price":123.38,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L150-30F \/ S1-02529041002","offer_id":47251288260893,"sku":null,"price":123.38,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L150-30F \/ SWT01278","offer_id":47251288424733,"sku":null,"price":123.38,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L150-30F \/ SWT1278","offer_id":47251288457501,"sku":null,"price":123.38,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/7298\/9981\/files\/c6a935773da041279004094d49db687e.webp?v=1773958104","url":"https:\/\/bcfurnace.myshopify.com\/products\/543-028","provider":"BCFurnace","version":"1.0","type":"link"}