CAP005S Generic 5uF 450V Capacitor, Square Body with Lead Wires, Universal Appliance Part for Motors and Fans

CAP005S is a generic 5uF capacitor rated at 450V, with a square body and flying lead wires for connection. It's a universal part rather than one made for a particular brand, so it can replace a capacitor of the same type and capacitance with an equal or lower voltage rating, provided it fits the space and mounting. Read the markings on your old capacitor and compare them with these figures before ordering.

Signs an appliance capacitor has failed

Single phase motors in fans, pumps and some washing machines use a capacitor to help them start and run in the right direction. When the capacitor loses capacitance, the motor may hum without turning, start only when the shaft is spun by hand, run slowly, overheat or turn the wrong way. Capacitors age with heat, so a bulging case, cracked body or leaking material are clear signs of failure. Testing with a capacitance tester confirms it.

Part details

• Capacitance 5uF
• Rated voltage 450V
• Square body
• Lead wire connections
• Generic universal replacement

Fitting a replacement capacitor

Disconnect the appliance from power and discharge the old capacitor before touching its terminals. Take a photo of the wiring so the leads go back to the same points. Join the leads with suitable insulated connectors and secure the capacitor so it can't vibrate against moving parts. If you're not qualified to work on mains wiring, have a licensed electrician or appliance technician fit it.

Questions about this part

Can I use a 5uF capacitor with a higher voltage rating?

Yes, a higher voltage rating is fine as long as the capacitance and type match. Going lower than your original voltage rating isn't safe. CAP005S is 5uF and 450V, so it suits capacitors marked 5uF at 450V or less.

Does the shape of the capacitor matter?

Electrically, no, as long as the ratings match. Physically, yes, because it has to fit the space and bracket. This one has a square body with lead wires, so check it suits where your old capacitor was mounted.