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Pool Pump Motor Capacitors

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                    Pool Pump Motor Capacitors

Swimming pool pump motor capacitors are used to assist the high speed rotation of a motor, acting as a battery. Capacitors can lose charge, or fail after many years of service. Capacitors can be tested for ampacity or continuity, but if bulged, cracked, warped, leaking or burned near connections, it's pretty much toast. If your motor only hums, but won't start and the motor shaft / impeller spins freely, the capacitor may be the cause.

Capacitors for pool pumps are sized according to the hp size of the motor, and generally speaking, larger pool pumps use larger capacitors. However, to order the correct replacement capacitor, look on the existing capacitor for the MFD rating and the Voltage Rating. MFD Ratings (for the smaller black Start capacitors) are given in a range, for example 161-193 MFD. Larger silver Run capacitors are not designated with the older term MFD, but use the more modern uF designation, for example, 30 uF or 35 uF. Start capacitors are normally smaller black cylinders, located in the rear of the motor. Run capacitors are larger silver cylinders that are located on top of the motor, underneath the hump, or steel shroud.

Replacement capacitors should always be of the same MFD and voltage rating as the original. If the exact replacement is not available, it is recommended to use one with a MFD rating not more than 10% greater. Using a larger capacitor could make the motor run hot, with less torque. The Voltage Rating should also vary only on the high side. In some cases, it will be necessary to go beyond 10%. Example, if a 370 volt unit is not available, the next rating is 440 volt.

- Run Capacitor 25.0 (370Vac)
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SKU: RD25370
Condition : New
Usually ships within 1 - 2 business days
was $15.68
$14.25
Description:
Run Capacitor, 25 MFD, 370v, 1-3/4" x 2-7/8"
Description:
Run Capacitor, 25 MFD, 370v, 1-3/4" x 2-7/8"
- Run Capacitor 30.0 (370Vac)
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SKU: 5VR0303
Condition : New
Low stock / available to order
was $6.90
$6.27
Description:
Run Capacitor, 30 MFD, 370v, 1-3/4" x 2-7/8"
Description:
Run Capacitor, 30 MFD, 370v, 1-3/4" x 2-7/8"
- Run Capacitor 35.0 (370Vac)
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SKU: RD35370
Condition : New
Usually ships within 1 - 2 business days
was $23.12
$21.02
Description:
Run Capacitor, 35 MFD, 370v, 2" x 3-3/4"
Description:
Run Capacitor, 35 MFD, 370v, 2" x 3-3/4"
- Run Capacitor 50.0 (370Vac)
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SKU: RD50370
Condition : New
Low stock / available to order
was $26.30
$23.91
Description:
Run Capacitor 50 MFD, 370v, 2" x 3-3/4"
Description:
Run Capacitor 50 MFD, 370v, 2" x 3-3/4"
- Start Capacitor 108-130 Mfd (110-125Vac)
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SKU: BC108
Condition : New
Low stock / available to order
was $6.31
$5.74
Description:
Start Capacitor, 108-130 MFD, 115v, 1-7/16" x 2-3/4"
Description:
Start Capacitor, 108-130 MFD, 115v, 1-7/16" x 2-3/4"
- Start Capacitor 145-174 Mfd (110-125Vac)
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SKU: BC145
Condition : New
Usually ships within 1 - 2 business days
was $6.58
$5.98
Description:
Start Capacitor, 145-175 MFD, 115v, 1-7/16" x 2-3/4"
Description:
Start Capacitor, 145-175 MFD, 115v, 1-7/16" x 2-3/4"
- Start Capacitor 161-193 Mfd (110-125Vac)
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SKU: BC161
Condition : New
Usually ships within 1 - 2 business days
was $6.58
$5.98
Description:
Start Capacitor, 161-193 MFD, 115v, 1-7/16" x 2-3/4"
Description:
Start Capacitor, 161-193 MFD, 115v, 1-7/16" x 2-3/4"
- Start Capacitor 189-227 Mfd (110-125Vac)
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SKU: BC189
Condition : New
Usually ships within 1 - 2 business days
was $6.95
$6.32
Description:
Start Capacitor, 189-227 MFD, 115v, 1-7/16" x 2-3/4"
Description:
Start Capacitor, 189-227 MFD, 115v, 1-7/16" x 2-3/4"
- Start Capacitor 216-259 Mfd (110-125Vac)
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SKU: BC216
Condition : New
Usually ships within 1 - 2 business days
was $7.46
$6.78
Description:
Start Capacitor, 216-259 MFD, 115v, 1-7/16" x 2-3/4"
Description:
Start Capacitor, 216-259 MFD, 115v, 1-7/16" x 2-3/4"
- Start Capacitor 243-292 Mfd (110-125Vac)
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SKU: BC243
Condition : New
Usually ships within 1 - 2 business days
was $10.03
$9.12
Description:
Start Capacitor, 243-292 MFD, 115v, 1-7/16" x 2-3/4"
Description:
Start Capacitor, 243-292 MFD, 115v, 1-7/16" x 2-3/4"
- Start Capacitor 36-43 Mfd (220-250Vac)
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SKU: BC36M250S
Condition : New
Low stock / available to order
was $6.58
$5.98
Description:
Start Capacitor, 36-43 MFD, 250v, 1-7/16" x 2-3/4"
Description:
Start Capacitor, 36-43 MFD, 250v, 1-7/16" x 2-3/4"
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