Frigidaire / Electrolux Microwave monitor door interlock switch, normally closed 5304509459, Replaces 5304464098

Genuine OEM normally-closed monitor switch used in microwave door-interlock circuitry. It prevents microwave operation when the door is open and is installed behind the microwave front panel.

Is This the Right Part?

Common Symptoms

• Intermittent no-start associated with door closing or latch engagement.
• Door-interlock-related operation issue in which the monitor-switch state does not change correctly as the door opens and closes.

Check Before Replacing

• With power connected, confirm the door closes fully and the latch engagement feels positive; do not attempt to defeat or bypass any door-safety switch.
• If qualified to service microwaves, disconnect power before testing. The monitor switch's COM-to-NC circuit should be closed with the door open and open with the door closed.
• Do not attribute a blown monitor/line fuse to this switch alone; the complete interlock system and related relay operation require evaluation.

Pro Tip

Part Details

Key Features

• Genuine Frigidaire OEM part.
• Normally-closed monitor-switch configuration.
• Used in microwave door-interlock safety circuitry.
• The switch is installed in a door-switch holder and is retained by a release tab in the documented Frigidaire repair procedure.

Installation Notes

• Disconnect electrical power before accessing or servicing the switch.
• Record wire-terminal orientation before disconnecting any leads.
• Professional installation is recommended because microwave shielding and the complete door-interlock system must be properly tested after replacement.
• Use only the correct identical switch type; do not bypass, modify, or substitute a different contact configuration.

Verified Compatible Models

79080322310, 79080323310, 79080329310, 79080332310, 79080333310, 79080339310, 79080342310, 79080343310, 79080349310, 79080352310, 79080353310, 79080354310, 79080359310, 79080362310, 79080363310

Fitment reminder: Match the complete appliance model number, including suffix or revision where applicable, before ordering.