LiftMaster 22120 / K22-120 Commercial Operator Brake Solenoid – 120V
LiftMaster 22120 / K22-120 Commercial Operator Brake Solenoid – 120V
The LiftMaster 22120 is a 120-volt brake-solenoid replacement for compatible LiftMaster commercial door and industrial gate operators. The solenoid electrically releases the operator’s mechanical brake during powered movement and allows the brake to re-engage when the motor stops.
Also referenced as LiftMaster 22-120 and K22-120.
Features
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120V/60Hz brake-solenoid replacement
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Restores electrical release of the mechanical operator brake
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Designed for compatible LiftMaster commercial-duty equipment
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Replacement for a failed, burned or mechanically sticking solenoid
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Used with selected Logic 5.0 and legacy operator configurations
Compatibility
Compatible applications may include select LiftMaster:
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MJ, MT, MH and HMJ commercial door operators
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APT, GT, BMT and GSD operator configurations
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SL575, SL585 and related industrial slide-gate operators
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Other Logic 5.0 operators specifically calling for K22-120
Compatibility varies by operator model, production revision, voltage and phase. Confirm that the existing solenoid is marked 120V and compare the original part number with the operator’s replacement-parts diagram.
This component is not interchangeable with the K22-240 or K22-575-1 solenoids.
Common Failure Symptoms
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Brake does not release when the motor starts
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Operator hums but cannot begin moving
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Brake remains partially engaged during travel
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Solenoid overheats or produces a burned odor
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Operator coasts because the brake does not re-engage
These symptoms can also result from incorrect control voltage, brake adjustment, wiring or mechanical brake damage. Diagnose the system before ordering.
Package Contents
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One 120V LiftMaster brake-solenoid replacement assembly
Brake hardware, wiring and operator components are not included unless specifically stated.
Installation & Safety
Commercial operator electrical service must be disconnected and locked out before installation. Verify voltage with appropriate test equipment and follow the operator wiring diagram. Never apply 208V, 230V, 240V, 460V or 575V to this 120V solenoid.
After installation, test brake release, stopping performance, limits, manual operation and all monitored safety devices.
Details
Need Help With Compatibility?
Not sure if this is the correct part for your garage door, operator, gate system, or application? Contact Us before ordering — we’re happy to help.
Garage-DoorParts.com carries a large selection of residential and commercial parts, and many components can look similar while having important differences in dimensions, model numbers, voltage, mounting, or compatibility.
For the best assistance, please provide as much information as possible, including the manufacturer, model number, part number, door or operator type, dimensions, and clear photos of the existing part or equipment.
Our goal is to help you identify the correct product before you order and reduce the possibility of ordering an incompatible part.
Contact Us with your product questions and compatibility information, and we’ll do our best to point you in the right direction.
Shipping & Returns
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We are committed to ensuring a positive shopping experience for all our customers. If for any reason you wish to return an item, we invite you to reach out to our team for assistance, and we will evaluate every return request with care and consideration.
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