Chamberlain part 030B363 capacitor is a replacement part for 1/3-horsepower garage door openers. This 220VAC capacitor has four prongs. Garage door opener capacitors are what starts the electric motor that operates your opener.
Matching part numbers: 30B387, 030B387
Compatible with AccessMaster, Chamberlain, LiftMaster, Sears Craftsman using the matching part numbers above.