ERP ERMW9458 Microwave Door Switch | Replaces MW9458, W10269458, 3405-001033, 28QBP0499

Microwave Door Switch For: Whirlpool, Samsung MW9458, W10269458, 3405-001033, 28QBP0499

Safety first: Unplug the microwave before servicing. Microwave internals can hold dangerous stored voltage, so internal repairs should be performed by a qualified technician.

Restore safe door operation with this ERP replacement door switch for compatible Whirlpool and Samsung microwaves. A failed door switch can stop the microwave from starting, keep the light and fan running with the door open, or trip the monitor fuse. This switch is rated 16A, 1/2 HP at 125/250V. Verify the complete microwave model, original part number, and switch position before ordering.

Product Details

• SKU: ERMW9458
• Voltage: 125/250V
• Amperage: 16A
• Horsepower: 1/2 HP

Compatible Part Numbers

• MW9458
• W10269458
• 3405-001033
• 28QBP0499

Key Features

• Direct replacement: Replaces the listed Whirlpool and Samsung door switch part numbers.
• Safety function: Confirms the door is closed before the microwave can run.
• Matched ratings: 16A, 1/2 HP at 125/250V.
• Installation check: Match the terminal layout, mounting, and switch position with the original before wiring.

Fixes These Symptoms

• Microwave will not start even though the door is closed
• Microwave keeps running or the light stays on with the door open
• Monitor fuse blows repeatedly when the door is opened
• Door must be slammed or jiggled before the microwave starts

Compatible Brands

Whirlpool, Samsung

Compatible Models

Fits various models. Please verify compatibility with us before ordering

Installation Instructions

1. Unplug the microwave and let any stored voltage discharge time pass before service.
2. Confirm the complete microwave model, original part number, and switch position.
3. Remove the outer panel to access the door switch, and label the wires before disconnecting them.
4. Transfer the wires to the matching terminals on the new switch and secure it in place.
5. Reassemble the panel and test the door interlock before returning the microwave to service.

Use a qualified appliance technician for any microwave internal repair; do not bypass a door switch.

For appliance cleaning products, visit affresh appliance cleaning products.

Safety Disclosure

Prop 65 Warning: Cancer and Reproductive Harm – www.P65Warnings.ca.gov