{"product_id":"rheem-470018-limit-switch-auto-reset-normally-closed-spst-l145-20f","title":"Rheem 470018 Limit Switch, Auto Reset, Normally Closed, SPST, L145-20F","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eRheem 470018\u003c\/strong\u003e is a \u003cstrong\u003e145°F automatic reset limit switch\u003c\/strong\u003e designed for reliable thermal protection in heating systems. This normally closed, single-pole single-throw (SPST) switch automatically resets once the temperature drops below the set point, eliminating the need for manual intervention after a thermal trip event.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 470018\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Rheem\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSet Point Temperature:\u003c\/strong\u003e 145°F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDifferential:\u003c\/strong\u003e 20°F (resets at approximately 125°F)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReset Type:\u003c\/strong\u003e Automatic (Auto Reset)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSwitch Configuration:\u003c\/strong\u003e Single-Pole Single-Throw (SPST)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNormal Switch State:\u003c\/strong\u003e Normally Closed (NC)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow It Works\u003c\/h3\u003e\n\u003cp\u003eThis limit switch operates in a \u003cstrong\u003enormally closed\u003c\/strong\u003e state, meaning the circuit remains complete during standard operating conditions. When the temperature reaches the \u003cstrong\u003e145°F trip point\u003c\/strong\u003e, the switch opens to interrupt the circuit and protect the system from overheating. With a \u003cstrong\u003e20°F differential\u003c\/strong\u003e, the switch automatically resets and closes the circuit once temperatures fall back to a safe level, restoring normal operation without manual reset.\u003c\/p\u003e\n\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eThis OEM Rheem limit switch is engineered for use in \u003cstrong\u003eRheem heating equipment\u003c\/strong\u003e where automatic thermal cutoff protection is required. It is a direct replacement component ideal for service technicians and HVAC professionals maintaining or repairing Rheem heating systems.\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\u003e3.2\" \u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWidth:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.55\" \u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeight:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.1\" \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Rheem","offers":[{"title":"Default Title","offer_id":51514287653170,"sku":"470018","price":59.98,"currency_code":"USD","in_stock":true}],"url":"https:\/\/malachypartsplus.com\/products\/rheem-470018-limit-switch-auto-reset-normally-closed-spst-l145-20f","provider":"Malachy Parts+","version":"1.0","type":"link"}