AstralPool CX240 Capacitor

The AstralPool CX240 is listed with a 20 µF (20 uF / 20 MFD), 450 VAC CBB60 motor-run capacitor with core leads. Before ordering, read the value printed on your old capacitor, shown as µF, uF or MFD. If it says 20 µF and its voltage is 450 V or lower, this capacitor matches. If it shows a different µF, order that value instead, because the motor may have been changed at some point.

AstralPool CX240 capacitor specification

A run capacitor stays in circuit the whole time the motor is running. It shifts the phase of the current in the motor’s second winding, which gives the motor its starting torque and keeps it running smoothly. As the capacitor ages it loses capacitance, and the motor gets steadily harder to start.

• Capacitance: 20 µF
• Voltage: 450 VAC
• Body: CBB60 motor-run
• Connection: core leads

Choosing the right capacitor for the CX240

Go by the label on the old capacitor, not by the pump model alone. A replacement should match the µF value (within about ±5%) and have a voltage rating the same as or higher than the old one. This one has a 450 VAC rating. The identical part is also sold on its own as our 20 µF 450 V CBB60 capacitor.

A capacitor can hold a charge after the power is off. Isolate the pump, treat the old capacitor as live until it has been safely discharged, and note which wires it connects to before you disconnect anything. If you’re not confident doing this, use an electrician.

If the seal is weeping as well, the AstralPool CX240 service kit pairs this capacitor with the matching mechanical seal for less than buying both separately.

Signs the CX240 capacitor is failing

• The motor hums but won’t turn, or only starts after the shaft is spun by hand
• The pump trips the breaker or thermal overload soon after switching on
• The case is swollen, split or leaking oil

Other pumps listed with a 20 µF capacitor

A 20 µF rating is also listed for the AstralPool CX180, AstralPool CX280, DAB K30/70, DAB K35/40, Grundfos JP5, Onga Leisuretime LTP550, Onga Leisuretime LTP750, Onga Pantera PPP550 and Onga Pantera PPP750. Whatever the pump, the number printed on your old capacitor decides what to order.

Before you order

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

What size capacitor does an AstralPool CX240 take?

The AstralPool CX240 is listed with a 20 µF, 450 VAC run capacitor with flying leads. Match the µF printed on your old capacitor before ordering.

My CX240 capacitor shows a different µF. What should I order?

Order the value printed on your old capacitor, not this listing's 20 µF. If the label is unreadable, send a photo of it and your AstralPool CX240's pump label through our contact page.

Can I use a higher voltage capacitor on the AstralPool CX240?

Yes, a higher voltage rating is fine on the AstralPool CX240 as long as the µF matches. This CX240 capacitor has a 450 VAC rating.

How do I know if my AstralPool CX240 capacitor has failed?

A CX240 that hums without turning, needs a spin by hand to start, or trips the breaker soon after starting often has a failed capacitor, especially if the case is swollen or leaking.

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

The AstralPool CX280 and CX180 are listed with the same 20 µF rating as the CX240, but always check the µF printed on the old capacitor in your own pump.

Is this an AstralPool capacitor?

No. It is an aftermarket capacitor sold under the CapacitorsNZ brand to suit the AstralPool CX240, and it is not made or endorsed by AstralPool.

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.