{"product_id":"rheem-47-21900-13-limit-switch-manual-reset-normally-closed-spst-close-at-31f-opens-at-150f","title":"Rheem 47-21900-13 Limit Switch, Manual Reset, Normally Closed, SPST, Close at -31F, Opens at 150F","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eRheem 47-21900-13\u003c\/strong\u003e is a manual reset limit switch designed for precise temperature-controlled applications. This switch operates in a \u003cstrong\u003enormally closed, single-pole single-throw (SPST)\u003c\/strong\u003e configuration, providing reliable circuit protection by opening at a set temperature threshold.\u003c\/p\u003e\n\n\u003ch3\u003eTemperature Operation\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCloses at:\u003c\/strong\u003e -31°F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOpens at:\u003c\/strong\u003e 150°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis switch automatically opens the circuit when the temperature reaches \u003cstrong\u003e150°F\u003c\/strong\u003e, serving as a critical safety cutoff to protect equipment from overheating. Once tripped, the switch requires a \u003cstrong\u003emanual reset\u003c\/strong\u003e before normal operation can resume, ensuring the underlying cause of the temperature fault is addressed before the system is restarted.\u003c\/p\u003e\n\n\u003ch3\u003eSwitch 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 47-21900-13\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 Manual Reset\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDefault State:\u003c\/strong\u003e Normally Closed (NC)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e SPST (Single-Pole Single-Throw)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOpens at:\u003c\/strong\u003e 150°F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCloses at:\u003c\/strong\u003e -31°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eManual Reset Safety Feature\u003c\/h3\u003e\n\u003cp\u003eUnlike automatic reset switches, this \u003cstrong\u003emanual reset limit switch\u003c\/strong\u003e requires deliberate operator intervention to restore circuit continuity after a high-temperature event. This design adds an important layer of safety, preventing automatic system restart after a fault condition and ensuring proper inspection and diagnosis before resuming operation.\u003c\/p\u003e\n\n\u003ch3\u003eOEM Replacement Part\u003c\/h3\u003e\n\u003cp\u003eThis is a genuine \u003cstrong\u003eRheem OEM replacement part\u003c\/strong\u003e, ensuring compatibility and reliability for Rheem systems that require the \u003cstrong\u003e47-21900-13\u003c\/strong\u003e limit switch. Always verify your equipment's part number before ordering to ensure a proper fit and function.\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":51514282049842,"sku":"47-21900-13","price":44.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/malachypartsplus.com\/es\/products\/rheem-47-21900-13-limit-switch-manual-reset-normally-closed-spst-close-at-31f-opens-at-150f","provider":"Malachy Parts+","version":"1.0","type":"link"}