{"product_id":"100-227","title":"100-227","description":"This high-limit control switch is a vital safety component for residential and commercial heating systems, including furnaces and HVAC units. Designed as a normally closed (NC), Single Pole Single Throw (SPST) device, it acts as a thermal safeguard by monitoring internal temperatures. The switch is engineered to open the electrical circuit if the temperature reaches 170°F, preventing potential overheating and equipment damage. With its 20°F differential auto-reset feature, the switch automatically closes once temperatures return to a safe operating range. The 3-inch insert probe allows for precise temperature detection within the plenum or heat exchanger. This replacement limit switch is essential for maintaining the safety and efficiency of forced-air heating applications.\u003cbr\u003e\nType: High Limit Control Switch\u003cbr\u003e\nSize: 3-inch Insert\u003cbr\u003e\nDimensions: 3 inch insert\u003cbr\u003e\nApplication: Used primarily in gas or electric furnaces, air handlers, and forced-air heating equipment to prevent overheating during the heating cycle.\u003cbr\u003e\nSpecifications: Configuration: Normally Closed (NC), SPST; Trip Temperature: 170°F (L170); Reset Differential: 20°F (20F); Reset Type: Automatic; Mounting: 3-inch probe insertion depth.","brand":"BCFurnace","offers":[{"title":"Limit Switch, Auto Reset, Normally Closed, SPST, L170-20F, 3\" Insert \/ 100-227","offer_id":50341986795805,"sku":null,"price":36.63,"currency_code":"CAD","in_stock":true},{"title":"Limit Switch, Auto Reset, Normally Closed, SPST, L170-20F, 3\" Insert \/ 47-104990-03","offer_id":50341986828573,"sku":null,"price":36.63,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/7298\/9981\/files\/a2527320af1f4885959acc9dcc81e5be.webp?v=1773966237","url":"https:\/\/bcfurnace.myshopify.com\/products\/100-227","provider":"BCFurnace","version":"1.0","type":"link"}