LiftMaster K030B0652-1 Motor Capacitor 89uF 120V
The LiftMaster K030B0652-1 is an 89uF, 120V motor capacitor used on select LiftMaster and Chamberlain AC garage door opener models. The capacitor helps the motor start properly and is a common replacement part when the opener motor hums or struggles to begin movement.
This part is rating-specific. Match the microfarad rating, voltage rating, and manufacturer service part number before ordering.
Compatibility / Application
K030B0652-1 is used with various LiftMaster and Chamberlain garage door openers where the parts diagram calls for an 89uF, 120V capacitor. The original product listing references model 3575S and 3275 applications, but the exact parts diagram should be used for final confirmation.
Features & Specifications
| Feature / Specification | Details |
|---|
| Manufacturer | LiftMaster / Chamberlain |
| Product Type | Motor capacitor |
| Part Number | K030B0652-1 |
| Application | AC garage door opener motor start/run circuit, where specified |
| Voltage | 120V |
| Capacitance | 89uF |
| Compatible Operator Type | Select LiftMaster and Chamberlain AC garage door openers |
| Also Known As | 30B652, 30B0652, 030B0652-1, 030B0652 |
Also Known As / Related Part Numbers
- K030B0652-1
- 30B652
- 30B0652
- 030B0652-1
- 030B0652
Technician Note
A humming opener is not always only a capacitor problem. Check door balance, binding, rail condition, gear/sprocket wear, and motor health before replacing parts blindly.
Before Ordering
- Match the old capacitor rating to 89uF and 120V.
- Confirm the opener model and parts diagram list K030B0652-1 or 30B652.
- Inspect for a bulged, leaking, or overheated capacitor case.
- Check that the garage door moves freely by hand before diagnosing opener strain.
- Do not substitute a different capacitor rating unless the manufacturer specifically allows it.
Professional Advisory
Capacitors can retain electrical charge. Disconnect power and use proper electrical safety practices. If you are not trained to service opener electrical components, have a qualified garage door technician replace and test the capacitor.
Product Questions & Answers
What are the electrical ratings for K030B0652-1?
K030B0652-1 is commonly listed as an 89uF, 120V motor capacitor for select LiftMaster and Chamberlain garage door openers.
What part numbers are related to 30B652?
Related numbers include K030B0652-1, 30B652, 30B0652, 030B0652-1, and 030B0652. These numbers may appear on the original capacitor label or parts diagram.
Can a bad capacitor make the opener hum but not move?
Yes. A weak or failed motor capacitor can cause an AC opener motor to hum, start slowly, or fail to start. The door balance and motor condition should also be checked before assuming the capacitor is the only issue.
Is this capacitor for every LiftMaster opener?
No. Capacitors are rated by microfarads and voltage, and the wrong rating can damage equipment. Use only the capacitor rating listed for the specific opener model and parts diagram.
Should a homeowner replace this capacitor?
Capacitors can hold electrical charge and are part of the opener's motor circuit. If you are not trained to work safely around electrical components, have a qualified garage door technician handle the diagnosis and replacement.
