AstralPool CX280 Capacitor

The capacitor to suit the AstralPool CX280 on this listing is a 20 µF (20 uF / 20 MFD), 450 VAC CBB60 motor-run capacitor with core leads, an aftermarket replacement. Before buying, read the value printed on the capacitor already in your pump: if it shows 20 µF (also written uF or MFD), this listing matches. If it shows a different number, order that value instead, because the µF must match the old part.

Choosing the right capacitor for the AstralPool CX280

The capacitance must match the old part closely, normally within plus or minus 5%. A capacitor that is too small or too large leaves the motor under-powered or running hot. The voltage figure only needs to be equal to or higher than the original, and this one carries a 450 VAC rating.

Motors can be swapped or rewound over the life of a pump, so the label on the old capacitor is a more reliable guide than the pump model alone. If the printing has faded, contact us with a photo of the pump label and we will help you work it out. A 20 µF 450 VAC run capacitor is also sold on its own as our general 20 µF CBB60 capacitor listing.

Signs the CX280 capacitor is failing

• The motor hums when switched on but the shaft does not turn.
• It only starts if the fan or shaft is given a flick by hand.
• The breaker or motor overload trips soon after start-up.
• The capacitor case is swollen, cracked or leaking.

Other pumps listed with the same 20 µF rating as the CX280

This rating is also listed for the AstralPool CX180, AstralPool CX240, DAB K30/70, DAB K35/40, Grundfos JP5, Onga Leisuretime LTP550, Onga Leisuretime LTP750, Onga Pantera PPP550 and Onga Pantera PPP750. Sharing a rating on our listings does not guarantee your particular pump has the same value, so still check the old part.

Swapping the CX280 capacitor safely

Switch off and isolate the pump at the plug or isolating switch, then give the old capacitor a few minutes before handling it, since it can hold a charge. Take a photo of how the leads connect, transfer them one at a time to the new core leads, insulate every joint properly and secure the new body where the old one sat. If you are not confident with mains wiring, have an electrician fit it.

If the seal is weeping too, the AstralPool CX280 service kit pairs this capacitor with the matching mechanical seal. Own a different AstralPool model? Browse the AstralPool service kits range.

Before you order

Check the old part before fitting: match the µF printed on your old capacitor.

What size capacitor does an AstralPool CX280 take?

Our listing for the AstralPool CX280 is a 20 µF 450 VAC run capacitor. Always match the µF printed on your old capacitor, and order that value if it differs.

What terminals does the CX280 capacitor have?

This AstralPool CX280 capacitor has flying leads, which are joined into the motor wiring rather than pushed onto spade tabs.

Can I use a capacitor with a higher voltage on my CX280?

Yes. A higher voltage rating than the original is fine on an AstralPool CX280, but the µF value must match the old capacitor.

Does the AstralPool CX240 use the same capacitor as the CX280?

The AstralPool CX240 and CX180 are both listed with the same 20 µF rating as the CX280. Check the value on your own capacitor to be sure.

My CX280 hums but won't start. Is it the capacitor?

A humming AstralPool CX280 motor that will not turn is a classic sign of a failed run capacitor, though a seized shaft can do the same. With the power off, check the shaft spins freely by hand first.

What if it doesn't fit?

If you're unsure, send us a photo of your old part and the pump's label before ordering.