CAP003 Generic 3uF Motor Capacitor, 3 Microfarad Universal Appliance Part for Fan and Small Motor Circuits

CAP003 is a 3uF (3 microfarad) capacitor, sold as a generic part that isn't tied to any one appliance brand. Capacitors of this value are common on small single phase motors, such as fan motors, where they help the motor start and run in the right direction. Before ordering, read the label on the capacitor you're replacing and make sure its microfarad value is 3uF.

How a failed capacitor shows up in fan and appliance motors

A single phase motor needs a capacitor to shift the current in its start winding, which is what gets it spinning. When the capacitor loses capacity or goes open circuit, the motor usually hums without turning, starts only after a push, runs slowly or gets hot. You might notice a fan that turns sluggishly, or a motor that trips its thermal cut-out after a few minutes. A capacitor that has bulged, leaked or split is clearly finished. Others fail quietly, so a technician will often check the microfarad value with a capacitance tester before replacing it.

Part details

• Part number CAP003
• Capacitance 3uF (3 microfarad)
• Generic universal replacement
• For single phase motors that call for a 3uF capacitor

Swapping the capacitor safely

Unplug the appliance or isolate the circuit before you start. Capacitors can hold a charge, so discharge the old one safely before touching its terminals. Photograph the wiring, then move the leads across one at a time. Make sure the voltage rating suits the one you're replacing. Hard-wired equipment should be handled by a licensed electrician.

Questions about this part

What voltage is CAP003 rated for?

The voltage rating isn't shown on this listing yet. Check the voltage printed on your old capacitor and send it through the parts enquiry form, and we can confirm whether CAP003 is a match before you order.