Sharp Microwave interlock / door-sensing switch QSW-MA131WRE0, Fixes Microwave does not operate when the door is closed
Genuine Sharp microwave microswitch used as a latch, interlock, or door-sensing switch, depending on the documented microwave model and switch position.
Genuine Sharp microwave microswitch used as a latch, interlock, or door-sensing switch, depending on the documented microwave model and switch position.
Is This the Right Part?
Common Symptoms
- Microwave fails to start with the door closed.
- Door-sensing or interlock operation is unreliable.
- Microwave operation may stop or fail to respond consistently when the door is moved.
Check Before Replacing
- With power disconnected, inspect the switch body, actuator, terminals, and mounting area for visible damage or looseness.
- Verify the switch identification and position against the model-specific service documentation before replacement.
- Electrical continuity testing should follow the applicable service manual because microwave interlock circuits and switch positions are model-specific.
Pro Tip
Part Details
Key Features
- Sharp genuine OEM part.
- Microswitch for microwave application.
- Documented as a 1st latch switch / 2nd interlock relay-control switch in Sharp R-870B and R-880B service documentation.
- Documented as a secondary interlock / door-sensing switch in Sharp R-200BW and R-203CW documentation.
- UPC listed for the exact part: 045900492579.
Installation Notes
- Disconnect electrical power before servicing.
- Microwave door-interlock components are safety-critical; install the switch only in the model-specific position documented by the service literature.
- Do not operate the microwave if the door, latch mechanism, switch bracket, or interlock circuit is damaged or misaligned.
- Internal microwave service may involve hazardous high voltage; qualified service procedures should be followed.
Verified Compatible Models
E30MO65GSSA, R-203CW, R-230BK, R-230BW, R-820JS, R-870B, R-880B, R200BK, R203BW, R209BK, R220BW, R318BK, R320BG, R820BK, R820BW, R930CS, R990K, SMC1585BB, SMC1585BS, SMC1585BW, SMC1585KB, SMC1585KS, SMC1585KW
Fitment reminder: Match the complete appliance model number, including suffix or revision where applicable, before ordering.
✅Compatibility & Cross Reference
Not sure about your model number? Call 1-877-899-7278 and we’ll help you confirm. All brand names are the property of their respective owners and are used for compatibility reference only.
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