{"product_id":"543-013","title":"543-013","description":"This 3-inch high limit control switch is a vital safety component designed for furnace and HVAC heating systems. As a thermal protection device, the L120-30F monitors internal temperatures to prevent overheating and potential equipment damage. When the system's air temperature reaches the 120°F safety threshold, the switch automatically opens the circuit to shut down the heating element or burner. Once the unit cools down by 30°F, the switch resets to allow for normal operation. This reliable replacement switch ensures your heating system operates within safe temperature parameters, providing essential protection for residential and commercial HVAC units.\u003cbr\u003e\nType: High Limit Control Switch\u003cbr\u003e\nSize: 3-inch probe length\u003cbr\u003e\nDimensions: 3 inches\u003cbr\u003e\nApplication: Used in forced air furnaces, gas-fired heaters, and HVAC systems to monitor discharge air temperature and provide high-temperature safety cut-out functionality.\u003cbr\u003e\nSpecifications: Fixed temperature settings: Opens at 120°F and closes at 90°F (30°F differential); features a 3-inch insertion depth for accurate plenum temperature sensing.","brand":"BCFurnace","offers":[{"title":"3\" HIGH LIMIT SWITCH L120-30F \/ 543-013","offer_id":47251536576797,"sku":null,"price":216.83,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L120-30F \/ 40154B009","offer_id":47251536675101,"sku":null,"price":216.83,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L120-30F \/ 46K71","offer_id":47251536609565,"sku":null,"price":216.83,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L120-30F \/ 46K7101","offer_id":47251536740637,"sku":null,"price":216.83,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L120-30F \/ INT17L-2109","offer_id":47259174469917,"sku":null,"price":216.83,"currency_code":"CAD","in_stock":true},{"title":"3\" HIGH LIMIT SWITCH L120-30F \/ R40154B009","offer_id":47251536642333,"sku":null,"price":216.83,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/7298\/9981\/files\/56bbfafff9ff4368a6042cf310b80f0e.webp?v=1773958906","url":"https:\/\/bcfurnace.myshopify.com\/products\/543-013","provider":"BCFurnace","version":"1.0","type":"link"}