Whirlpool Microwave Interlock Switch Kit / Interlock Switch Service Kit LP W11493414, Replaces W11479930

Genuine Whirlpool interlock switch kit used in selected Whirlpool and KitchenAid microwave, microwave/hood-combo, compact microwave/hood-combo, and built-in microwave models.

Is This the Right Part?

Common Symptoms

• Microwave does not start when Start is pressed
• Microwave stops during operation when the door or latch position changes
• Door-related error or refusal to run despite the door appearing closed
• Intermittent operation associated with door or latch movement

Check Before Replacing

• Confirm the door closes fully and the latch hooks engage without unusual looseness or obstruction.
• Inspect the door-latch area for visible damage, misalignment, or debris without disassembling the microwave.
• Observe whether the symptom changes when the door is gently closed normally; do not force, slam, or support the door in a partially closed position.
• Verify the exact appliance model before ordering because interlock components are model-specific.
• Do not bypass, jumper, or operate the microwave with damaged or defeated safety switches; internal microwave service should follow the model-specific service documentation and qualified-service precautions.

Pro Tip

Part Details

Key Features

• Genuine Whirlpool interlock switch service kit
• Designed for selected Whirlpool and KitchenAid microwave appliances
• Restores the door-closed safety interlock signal
• Service-kit replacement for the interlock switch component
• Direct OEM replacement identified for the specified compatible models

Installation Notes

• Disconnect electrical power before servicing.
• Match the replacement to the exact microwave model and serial information.
• Follow the appliance-specific service instructions for switch positioning, wiring, and door-latch alignment.
• Ensure electrical connectors and the switch assembly are correctly seated before restoring power.
• Never bypass the microwave safety interlock system; if cabinet access or high-voltage service is required, use a qualified technician.

Verified Compatible Models

KMBT5011KSS01, KMLS311HSS08, KMLS311HSS9, KMLS311HWH8, WML55011HB08, WMT55511KS0, YKMLS311HBL8, YKMLS311HBL09, YKMLS311HBS09, YKMLS311HSS08, YWML55011HW7, YWML55011HW08, YWML75011HN10, YWML75011HV11, YWML75011HW11

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