Review on 🔌 16A 125VAC Microwave Oven Door Switch Replacement Part, KW3AT-16, Normally Open - 1 Piece by Justin Abreu

These common micro switches are used in various appliances. Note that they come in three configurations, which can be distinguished by their terminal position and labeling: normally open (NO), normally closed (NC), and both. My microwave broke and only worked when the door was OPEN which is a major safety issue. Inside there is a plastic holder with 3 micro switches. After discharging the internal large capacitor with a grounded screwdriver, I tested the switches with an ohmmeter (you'll need to unplug some of the switch wires to get a good reading). I broke the retaining tab on the switch bracket, so to replace the switch I used a small plastic tie and wrapped it around the switch to secure it to the bracket. A few minutes of work and a $5 switch delivered in less than 24 hours saved me from spending $100 on a new microwave. .