Microwave door switch. This switch is normally open. When the microwave door is shut, the door switches close to send power to the microwave. If this switch fails, the microwave will not start.
Microwave door key (or door latch). The door latch ensures that the microwave door is closed while the microwave is operating. If the door latch is broken, the microwave will not start.
Door latch spring
Assy, mtr & pulley (240V 60Hz.)