{"product_id":"ruud-47-104465-02-gas-furnace-limit-switch-spst-auto-reset","title":"Ruud 47-104465-02 Gas Furnace Limit Switch Spst Auto Reset","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe RUUD 47-104465-02 is a single-pole, single-throw (SPST) auto-reset limit switch designed for use in residential gas furnaces. This normally closed limit switch opens at 120 degrees F and resets automatically at 100 degrees F, protecting the heat exchanger and surrounding components from overtemperature conditions. Rated at 230 VAC and 25 amps, it provides reliable overcurrent and thermal protection in the furnace air plenum. The switch features a red body for easy identification during service. Licensed HVAC technicians install this component as part of routine furnace maintenance or failure diagnosis.\u003c\/p\u003e\u003cp\u003eThis limit switch is a direct OEM replacement for the R92PA0401317MSA and R92PA0701317MSA RUUD gas furnace models. It mounts in the furnace cabinet and monitors air temperature to shut down the burner when airflow is restricted or temperatures exceed safe operating thresholds. Typical install scenarios include replacing a failed or nuisance-tripping limit switch during a heating season service call or full furnace repair.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eOpens at 120 degrees F, closes at 100 degrees F for precise thermal cutout control\u003c\/li\u003e\n\u003cli\u003eAuto-reset operation restores function once temperatures return to safe range\u003c\/li\u003e\n\u003cli\u003eSPST, normally closed, 1-pole configuration for straightforward wiring integration\u003c\/li\u003e\n\u003cli\u003eRated 230 VAC at 25 amps for reliable performance in gas furnace circuits\u003c\/li\u003e\n\u003cli\u003eRed body color aids fast visual identification during service\u003c\/li\u003e\n\u003cli\u003eCompact form factor fits standard furnace limit switch mounting locations\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a direct OEM-style replacement for the RUUD R92PA0401317MSA and R92PA0701317MSA gas furnace models.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a licensed HVAC technician in accordance with local mechanical codes and the furnace manufacturer's service documentation. Power down the furnace and shut off the gas supply before removing the old limit switch or handling any wiring. Verify the replacement switch is seated fully and the sensing element is positioned correctly in the airstream before restoring power. Always confirm system operation and check for any active fault codes after completing the swap.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: Limit Switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwitch Configuration\u003c\/strong\u003e: SPST, Normally Closed, 1-Pole\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset Type\u003c\/strong\u003e: Auto Reset\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen Temperature\u003c\/strong\u003e: 120 degrees F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClose Temperature\u003c\/strong\u003e: 100 degrees F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating\u003c\/strong\u003e: 230 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmperage Rating\u003c\/strong\u003e: 25 amps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: Red\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 1.4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 4.7 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 3.8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.06 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: RUUD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 47-104465-02\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RUUD","offers":[{"title":"Default Title","offer_id":51284044710194,"sku":"47-104465-02","price":20.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/309277762.jpg?v=1781067067","url":"https:\/\/voomisupply.com\/products\/ruud-47-104465-02-gas-furnace-limit-switch-spst-auto-reset","provider":"Voomi Supply","version":"1.0","type":"link"}