{"product_id":"rheem-47-21711-04-limit-switch-auto-reset-normally-closed-spst-l200-20f-7-insert","title":"Rheem 47-21711-04 Limit Switch, Auto Reset, Normally Closed, SPST, L200-20F, 7\" Insert","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eRheem 47-21711-04\u003c\/strong\u003e is an automatic reset limit switch designed for use in heating systems. This safety component features a \u003cstrong\u003enormally closed, single-pole single-throw (SPST)\u003c\/strong\u003e configuration and is engineered to protect your system by interrupting operation when temperatures exceed safe thresholds.\u003c\/p\u003e\n\n\u003ch3\u003eTemperature Specifications\u003c\/h3\u003e\n\u003cp\u003eThis limit switch is rated at \u003cstrong\u003eL200-20F\u003c\/strong\u003e, meaning it is designed to \u003cstrong\u003eopen (trip) at 200°F\u003c\/strong\u003e and automatically \u003cstrong\u003ereset at 180°F\u003c\/strong\u003e. The 20°F differential between the trip and reset points ensures stable, reliable cycling without short-cycling the connected equipment.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAuto Reset:\u003c\/strong\u003e Automatically resets once the temperature drops back to 180°F, eliminating the need for manual intervention\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNormally Closed (NC):\u003c\/strong\u003e Circuit remains closed under normal operating conditions and opens upon reaching the high-limit temperature of 200°F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSPST Configuration:\u003c\/strong\u003e Single-pole single-throw design for straightforward integration into control circuits\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e7\" Insert Length:\u003c\/strong\u003e Designed to fit into standard sensing element wells for accurate temperature detection\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOEM Rheem Part:\u003c\/strong\u003e Manufactured to Rheem's original equipment specifications for guaranteed compatibility and reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatibility \u0026amp; Application\u003c\/h3\u003e\n\u003cp\u003eAs a genuine \u003cstrong\u003eRheem OEM replacement part\u003c\/strong\u003e, the 47-21711-04 is engineered for direct compatibility with applicable Rheem heating equipment. The \u003cstrong\u003e7\" insert\u003c\/strong\u003e length ensures proper placement within the heat exchanger or plenum for accurate temperature sensing. Always verify compatibility with your specific unit model before installation.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Limit Switches Matter\u003c\/h3\u003e\n\u003cp\u003eLimit switches are a critical safety component in forced-air heating systems. They \u003cstrong\u003eprevent overheating\u003c\/strong\u003e by shutting down the burner or blower when internal temperatures reach unsafe levels. Using a properly rated, manufacturer-approved replacement like this Rheem unit helps maintain system safety, efficiency, and longevity.\u003c\/p\u003e\n\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.0\" \u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWidth:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.0\" \u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeight:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.0\" \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Rheem","offers":[{"title":"Default Title","offer_id":51514281787698,"sku":"47-21711-04","price":40.36,"currency_code":"USD","in_stock":true}],"url":"https:\/\/malachypartsplus.com\/products\/rheem-47-21711-04-limit-switch-auto-reset-normally-closed-spst-l200-20f-7-insert","provider":"Malachy Parts+","version":"1.0","type":"link"}