LiftMaster K41-0081-000 Interlock Reset Switch — Heavy-Duty Gate Operators

The LiftMaster K41-0081-000 is the interlock reset-switch service reference identified in documented heavy-duty gate-operator assemblies. HDSL24UL manufacturer parts information lists it separately from the reset-with-ID-resistor assembly, main board and gearbox disconnect. Match the installed switch, wiring and mechanical actuation before ordering. The interlock has a specific role within the operator; it is not a generic accessory switch or permission to bypass an open interlock so a gate can continue running with an enclosure or disconnect problem.

Compatibility — Models, Versions and Exclusions

Inspect the Interlock Mechanism and the Circuit

An interlock switch works with the mechanism that actuates it. A fault may result from a bent bracket, worn linkage, loose mounting or damaged wiring rather than the switch alone. Have qualified personnel inspect those elements together and compare the installed arrangement with the correct service diagram. Do not change the actuator position simply to conceal incomplete engagement or another mechanical defect.

Record the original terminal identification and circuit function before removal. The SPDT designation describes the contact arrangement, while the operator diagram determines how those contacts are used. Keep that distinction clear when comparing replacements. After service, test the intended interlock response in every required operating state; ordinary door movement by itself does not demonstrate that the interlock is functioning.

Specifications and Product Identification

Before Ordering

• Record the full HD operator and installed switch details.
• Confirm K41-0081-000 versus reset-with-ID components.
• Inspect switch actuation, connections and associated mechanism.
• Plan correct interlock and complete gate safety tests.

Package Contents and Separate Requirements

This offer identifies the K41-0081-000 interlock reset-switch service item. A complete gearbox disconnect, main board, reset-with-ID-resistor assembly, enclosure and gate operator are not promised as included. Confirm any supplied harness or mounting pieces in the current package. Manufacturer diagrams distinguish these components even when they interact during operation; selecting one switch does not establish that the full surrounding interlock mechanism is renewed.

Safety Warnings — Read Before Installation or Service

• WARNING: A failed or bypassed interlock can permit hazardous operation. A trained commercial-door technician must perform diagnosis and replacement.
• Disconnect and secure all applicable power and restrain the door before mechanical or electrical service. Verify circuit requirements from the exact wiring diagram.
• Never jumper or defeat the interlock to restore operation. Do not use a switch adjustment to compensate for a damaged release or hoist mechanism.
• Restore covers and test the interlock, travel, reversal and all required protection devices before normal use.

Related Products and Important Differences

• CPS-U monitored commercial photo eyes — a separate protection component for approved operators and environments; not supplied with this mechanical accessory.
• TDC12X1BMC MAXUM trolley operator — a complete-operator comparison; verify accessory selection against its own documentation.

Frequently Asked Questions

Is this the reset-with-ID-resistor assembly?

No. Manufacturer parts information lists that separately.

Can I bypass it during a fault?

Do not defeat an interlock. Diagnose the switch and associated mechanism.

Is its electrical rating the same as K23-10916?

No rating equivalence is established; match the exact reference and diagram.

Will it fit every HD gate operator?

Confirm the complete model and service list before ordering.

Need Help Confirming the Right Product?

Contact Garage-DoorParts.com before ordering. Send the full equipment model, readable part labels and photographs of the installed assembly. Include the dimensions, electrical configuration or accessory details relevant to your project so the listing can be checked against the actual installation.