{"product_id":"rheem-47-21777-04-limit-switch-auto-reset-open-on-rise-spst-close-at-28f-opens-at-50f","title":"Rheem 47-21777-04 Limit Switch, Auto Reset, Open On Rise, SPST, Close at 28F, Opens at 50F","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eRheem 47-21777-04\u003c\/strong\u003e is a defrost sensor limit switch designed for reliable temperature-based control in HVAC and refrigeration applications. This auto-reset switch provides automatic operation without the need for manual intervention after a trip event.\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 47-21777-04\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Defrost Sensor (L50-22F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwitch Type:\u003c\/strong\u003e SPST (Single Pole, Single Throw)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset Type:\u003c\/strong\u003e Auto Reset\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAction:\u003c\/strong\u003e Open on Rise\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClose Temperature:\u003c\/strong\u003e 28°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen Temperature:\u003c\/strong\u003e 50°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow It Works\u003c\/h3\u003e\n\u003cp\u003eThis limit switch operates on temperature rise, meaning the switch \u003cstrong\u003eopens at 50°F\u003c\/strong\u003e to interrupt the circuit and \u003cstrong\u003ecloses at 28°F\u003c\/strong\u003e to restore the circuit. This temperature differential allows the switch to accurately monitor and respond to defrost cycle conditions, ensuring the system operates within its intended temperature range.\u003c\/p\u003e\n\n\u003ch3\u003eAuto Reset Functionality\u003c\/h3\u003e\n\u003cp\u003eEquipped with an \u003cstrong\u003eautomatic reset\u003c\/strong\u003e feature, this limit switch will reset itself once temperatures return to the closing threshold of 28°F. This eliminates the need for manual reset procedures and supports continuous, uninterrupted system operation.\u003c\/p\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eThis is a genuine \u003cstrong\u003eRheem OEM replacement part\u003c\/strong\u003e, engineered to meet the exact specifications of the original component. It is designed for use in Rheem systems where defrost cycle temperature sensing and control are required.\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":51514281918770,"sku":"47-21777-04","price":53.6,"currency_code":"USD","in_stock":true}],"url":"https:\/\/malachypartsplus.com\/es\/products\/rheem-47-21777-04-limit-switch-auto-reset-open-on-rise-spst-close-at-28f-opens-at-50f","provider":"Malachy Parts+","version":"1.0","type":"link"}