Unlock the Right Part
for Your Repair
Find the exact part you need
Enter your model number to see parts that fit your machine.
Price Match Guarantee
In-stock parts ship the same day
365-Day Return Policy
Price Match GuaranteeChoose Product
Identify Problem
03
Find Solutions
HomeRepair HelpAmana Microwave RepairAmana Microwave is tripping circuit breaker Repair
Amana Microwave is tripping circuit breaker
When your Amana microwave is tripping the circuit breaker, especially when the door closes or opens, a defective door switch is the most likely cause. Most microwaves use three or four interlock switches, including the primary door switch, secondary door switch, and monitor switch, that activate in sequence. A failed switch can short the circuit, blow the line fuse, or make the microwave trip the breaker. Test each switch for continuity and replace any switch that fails. If the switches are good, a shorted high-voltage capacitor may be causing the problem. Less common causes include a shorted magnetron or high-voltage transformer. A failed transformer often arcs or produces a burnt smell. These repairs require opening the microwave cabinet. The high-voltage capacitor can store a lethal charge even after the microwave is unplugged, so it must be properly discharged before any interior work. If you are not familiar with capacitor discharge procedures, have a qualified technician handle the repair. Enter your Amana microwave model number to find the exact replacement door switch, high-voltage capacitor, magnetron, or transformer for your appliance.
01 - Amana Microwave Door Switch
Most microwaves have three or four door switches. When the microwave door closes, the door switches actuate in sequence to ensure that the door is closed properly. If any of the door switches fail, the microwave line fuse can blow, or the circuit breaker may trip. To determine if any of the door switches are defective, use a multimeter to test each of the switches for continuity. If any of the door switches lack continuity, replace the defective switch. (Caution: The microwave oven can store thousands of volts of electricity in its high voltage capacitor, even after the microwave oven has been unplugged. Due to the potenti...
Enter model number to search for the required part specific to your product
Top Solution
02 - Amana Microwave High Voltage Capacitor
A microwave that is tripping a circuit breaker can be caused by a shorted high voltage capacitor. You can determine that a capacitor has shorted by contacting one multimeter lead to one of the capacitor's terminals and the other lead to the casing. If meter display indicates that electrical continuity is present between any of the capacitor terminals and the casing, or the terminals show continuous continuity between them, the component has shorted and will need to be replaced.
Uncommon But Possible
03 - Amana Microwave Magnetron
A microwave that is tripping a circuit breaker can be caused by a shorted magnetron. You can determine that a magnetron has shorted by contacting one multimeter lead to one of the magnetron's terminals and the other lead to the casing. If meter display indicates that electrical continuity is present between any of the terminals and the casing, the magnetron has shorted and will need to be replaced.
Uncommon But Possible
04 - Amana Microwave High Voltage Transformer
A microwave that is tripping a circuit breaker can be caused by a shorted high voltage transformer. When a high voltage transformer shorts out, it will usually arc and smell burnt.
Uncommon But Possible
Frequently Asked Questions
Why is my Amana microwave tripping the circuit breaker?
Can a microwave door switch cause the breaker to trip?
How do I know if the high-voltage capacitor is causing my microwave to trip the breaker?
Could the magnetron or high-voltage transformer be causing the breaker to trip?
How do I find the correct Amana microwave part if the breaker keeps tripping?
Shop by Amana Microwave Parts
Shop by Popular Amana Microwave Models
Our Story
Family-owned and operated since 1912, Burke America Parts Group is the longest-running genuine appliance, HVAC, and outdoor power equipment parts solution in North America. At Repair Clinic, we're proud to be an international brand trusted by the pros as well as the DIY community.
About Repair Clinic
© 2026 RepairClinic.com