GE Microwave Thermostat Switch (WB27X10195)

The GE Microwave Thermostat Switch monitors internal temperature inside the microwave or Advantium oven and cuts power to the magnetron or heating components when a safe temperature limit is reached. It acts as a thermal safety device, automatically breaking the electrical circuit to prevent overheating and protect internal parts from heat damage.

The GE Microwave Thermostat Switch can fail after repeated thermal cycling, exposure to grease buildup, or a single overheating event that causes the switch contacts to burn out or weld together. A faulty thermostat switch may trip too early, fail to reset, or stop responding entirely, leaving the microwave unable to heat or causing it to shut off unexpectedly during use.

These symptoms may point to a failed thermostat switch in your microwave:

- Microwave stops heating partway through a cycle

- Microwave shuts off suddenly and will not restart right away

- Unit runs but produces no heat at all

- Microwave trips the house circuit breaker during operation

- Burning smell or signs of scorching near internal components

- Microwave powers on but magnetron never activates

- Error or fault code related to overheating or thermal protection