{"product_id":"rheem-47-20045-03-limit-switch-auto-reset-normally-closed-dpst-l170-40f","title":"Rheem 47-20045-03 Limit Switch, Auto Reset, Normally Closed, DPST, L170-40F","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eRheem 47-20045-03\u003c\/strong\u003e is an automatic reset limit switch designed for use in heating systems where precise thermal protection is required. This switch provides reliable over-temperature protection, automatically resetting once safe operating temperatures are restored.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Rheem\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 47-20045-03\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSwitch Type:\u003c\/strong\u003e Limit Switch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReset Type:\u003c\/strong\u003e Auto Reset\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSwitch Configuration:\u003c\/strong\u003e DPST (Double Pole, Single Throw)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNormal State:\u003c\/strong\u003e Normally Closed (NC)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTrip Temperature:\u003c\/strong\u003e L170°F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReset Differential:\u003c\/strong\u003e 40°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow It Works\u003c\/h3\u003e\n\u003cp\u003eThis \u003cstrong\u003enormally closed\u003c\/strong\u003e limit switch remains in the closed (active) position during normal operation, allowing current to flow through the circuit. When the sensed temperature reaches the \u003cstrong\u003etrip point of 170°F\u003c\/strong\u003e, the switch opens to interrupt the circuit and protect the system from overheating. Once the temperature drops by the \u003cstrong\u003e40°F differential\u003c\/strong\u003e (to approximately 130°F), the switch automatically resets to its closed position — requiring no manual intervention.\u003c\/p\u003e\n\n\u003ch3\u003eSwitch Configuration\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eDPST (Double Pole, Single Throw)\u003c\/strong\u003e configuration allows this limit switch to simultaneously control two separate circuits with a single switching action, making it well-suited for applications requiring dual-circuit thermal protection within a single heating unit.\u003c\/p\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eThis is a \u003cstrong\u003egenuine Rheem OEM replacement part\u003c\/strong\u003e, engineered to meet the exact specifications of compatible Rheem heating systems. Always verify your equipment's model and part number before ordering to ensure proper fitment and safe operation.\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\u003e5.8\" \u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWidth:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.55\" \u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeight:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.8\" \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Rheem","offers":[{"title":"Default Title","offer_id":51514281263410,"sku":"47-20045-03","price":57.67,"currency_code":"USD","in_stock":true}],"url":"https:\/\/malachypartsplus.com\/es\/products\/rheem-47-20045-03-limit-switch-auto-reset-normally-closed-dpst-l170-40f","provider":"Malachy Parts+","version":"1.0","type":"link"}