{"product_id":"020-529","title":"020-529","description":"This high-quality Fan Disc High Limit Control Switch is a vital safety component for residential furnace and HVAC systems. Designed as a thermal safeguard, this normally closed (NC) limit switch monitors internal temperatures to prevent the heat exchanger from overheating. When the system temperature reaches the 135°F threshold, the switch automatically opens the electrical circuit, shutting down the burner or heating element to ensure safe operation. Once the unit cools to a safe temperature, the switch resets, allowing your heating system to resume its cycle. This replacement part is ideal for fixing furnace short-cycling or units that have stopped heating due to a failed safety sensor, ensuring your heating equipment remains reliable and efficient throughout the season.\u003cbr\u003e\nType: High Limit Control Switch\u003cbr\u003e\nSize: Standard Fan Disc\u003cbr\u003e\nApplication: Forced-air gas furnaces, heating systems, and HVAC equipment requiring thermal safety monitoring.\u003cbr\u003e\nSpecifications: Open Temperature: 135°F; Reset Type: Automatic; Switch Configuration: Normally Closed (NC); Function: High Limit Safety Cutout.","brand":"BCFurnace","offers":[{"title":"SWITCH; LIMIT, OPEN AT 135F, CLOSE AT 10 \/ 020-529","offer_id":50216115863837,"sku":null,"price":83.27,"currency_code":"CAD","in_stock":true},{"title":"SWITCH; LIMIT, OPEN AT 135F, CLOSE AT 10 \/ SWT03938","offer_id":50216115896605,"sku":null,"price":83.27,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/7298\/9981\/files\/c812491965f94be9a81c65ab506cb85f.webp?v=1773962413","url":"https:\/\/bcfurnace.myshopify.com\/products\/020-529","provider":"BCFurnace","version":"1.0","type":"link"}