KW3A Normally Open NO Microwave Switch 16A 125/250V Compatible With GE/SAMSUNG/LG/SHARP/Panasonic Microwaves. This door interlock switch is for microwaves. Door interlock switch prevents the microwave from starting when the door is open.Because the microwave shielding and interlock switches must be properly tested following the door interlock switch replacement, a service technician should install this part. Compatible With GE/SAMSUNG/LG/SHARP/Panasonic Microwaves. Current:16A; Voltage:125/250AVC