{"product_id":"microwave-universal-door-switch-28qbp0491-3-wire-3-16-male-terminals-21-amp","title":"Microwave Door Interlock Switch SPDT 21A For: Universal 28QBP0491","description":"\u003ch2\u003eMicrowave Door Interlock Switch SPDT 21A For: Universal 28QBP0491\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eSafety first:\u003c\/strong\u003e Disconnect electrical power before servicing. Microwave ovens can retain dangerous high voltage after unplugging. Internal microwave repairs and door-interlock testing should be performed by a qualified service technician. Never bypass or defeat a door interlock.\u003c\/p\u003e\u003cp\u003eRestore the microwave door-sensing circuit with this ERP replacement SPDT door interlock switch for compatible microwave ovens. The switch has normally open and normally closed contacts, is rated 21 amps at 125\/250 volts, and uses 3\/16-inch terminals. A failed or worn switch can prevent starting, cause intermittent operation, or stop the control from correctly sensing the door position. Verify the complete appliance model, original part, terminal layout, ratings, and mounting fit before ordering. Universal is a catalog label only and does not mean the switch fits every microwave.\u003c\/p\u003e\u003ch3\u003eProduct Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e 28QBP0491\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 793713639659\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of origin:\u003c\/strong\u003e Not specified in current product data\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwitch type:\u003c\/strong\u003e SPDT with normally open and normally closed contacts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical rating:\u003c\/strong\u003e 21A at 125\/250V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e 3\/16-inch\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible Part Numbers\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e28QBP0491\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect replacement:\u003c\/strong\u003e Replaces the listed 28QBP0491 microwave door interlock switch reference where specifications match.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoor sensing:\u003c\/strong\u003e Helps the microwave control detect the required door position.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKnown configuration:\u003c\/strong\u003e SPDT switch with normally open and normally closed contacts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment check:\u003c\/strong\u003e Match the switch type, terminal layout, electrical rating, and original part before installation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFixes These Symptoms\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMicrowave will not operate with the door closed after proper diagnosis\u003c\/li\u003e\n\u003cli\u003eMicrowave stops or operates intermittently when the door position changes\u003c\/li\u003e\n\u003cli\u003eMicrowave door interlock switch fails continuity testing\u003c\/li\u003e\n\u003cli\u003eSwitch is physically damaged or terminals are worn\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\u003cp\u003eUniversal catalog label only; verify the exact appliance fitment before ordering.\u003c\/p\u003e\u003ch3\u003eCompatible Models\u003c\/h3\u003e\u003cp\u003eFits various models. Please verify compatibility with us before ordering\u003c\/p\u003e\u003ch3\u003eInstallation Instructions\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003eDisconnect the microwave from electrical power and follow the model-specific service manual.\u003c\/li\u003e\n\u003cli\u003eHave a qualified technician verify the switch failure and diagnose the door-interlock circuit.\u003c\/li\u003e\n\u003cli\u003eConfirm the complete microwave model, switch type, terminal layout, electrical rating, and original part number.\u003c\/li\u003e\n\u003cli\u003eInstall and test the replacement switch according to the manufacturer’s service procedure. Never bypass or defeat a door interlock.\u003c\/li\u003e\n\u003cli\u003eComplete all required high-voltage, door-alignment, and safety checks before returning the microwave to service.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cp\u003eFor appliance cleaning products, visit \u003ca href=\"https:\/\/authenticapplianceparts.com\/search?q=affresh\u0026amp;type=product\"\u003eaffresh appliance cleaning products\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eSafety Disclosure\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eProp 65 Warning:\u003c\/strong\u003e Cancer and Reproductive Harm – www.P65Warnings.ca.gov\u003c\/p\u003e","brand":"ERP","offers":[{"title":"Default Title","offer_id":50247481032947,"sku":"28QBP0491","price":8.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/7859\/2755\/files\/57_c08b9de8-0f3c-4a6d-9dee-6c10f4298019.jpg?v=1786339939","url":"https:\/\/authenticapplianceparts.com\/pt\/products\/microwave-universal-door-switch-28qbp0491-3-wire-3-16-male-terminals-21-amp","provider":"Authentic Appliance Parts","version":"1.0","type":"link"}