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590-708 uF MFD 110-125 VAC ±20% 50/60 Hz CD60 Round Motor Start Capacitor - Fits Pool Pump, Well Pump

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590-708 mfd uF 110-125VAC ±20% Volts Round Motor Start Capacitor 50/60 Hz AC

Key Features

  • Capacitance: 590-708 uF (Microfarad)
  • Voltage Rating: 110-125 VAC
  • Frequency: 50/60 Hz
  • Tolerance: +/- 20%
  • Operating Temperature: -40°C to +65°C (-40°F to +149°F)
  • Shape: Round
  • Dimensions: 1.81 in x 3.35 in (46mm x 85mm)
  • Terminals: Four 1/4 inch spade terminals
  • Case Material: Moisture and oil-resistant housing
  • Contains no Polychlorinated Biphenyls (PCBs)

Replaces / Cross-Reference Part Numbers

  • Capacitor Model Type: CD60
  • Part Number: 590-708
  • Vanguard: BC-590-S

Compatibility & Fitment

  • Universal replacement for start capacitors with matching electrical specifications and physical dimensions.
  • Suitable for single-phase electric motors in applications such as air conditioners, compressors, pumps, and fans.
  • Verify your original capacitor's uF/MFD rating, VAC rating, and physical dimensions for proper fitment.

When to Replace

  • Motor hums but fails to start or starts slowly.
  • Circuit breaker trips or fuse blows upon motor startup.
  • Visible signs of damage on the old capacitor, such as bulging, cracking, or leaking fluid.

Installation Tips

  • Disconnect all electrical power to the unit before performing installation.
  • Safely discharge the old capacitor by shorting the terminals with a resistor or an insulated tool.
  • The voltage rating of the replacement capacitor must be equal to or greater than the original.
  • Capacitance (uF/MFD) rating should match the original component's specification.
  • This is a non-polarized capacitor; wires can be connected to either terminal.

FAQ

If your motor hums but fails to reach full speed, or if it struggles to start and eventually trips the breaker, the capacitor is likely the culprit. You may also notice a burning smell, a bulging top on the capacitor casing, or the motor simply refusing to turn on despite receiving power.
Yes, this is a universal-style CD60 motor start capacitor. It is designed to replace various OEM parts with the same 590-708 uF/MFD and 110-125 VAC specifications, including units from manufacturers like Packard (PMJ590) and BMI (092A590B125BD4A).
This capacitor is primarily used in high-torque applications, including pool pumps, well pumps, HVAC blower motors, compressors, and various industrial electric motors requiring a 590-708 uF start assist.
Replacing a capacitor is a straightforward task that typically takes 15 to 30 minutes. You will need a screwdriver to open the motor housing and a pair of needle-nose pliers to disconnect the spade terminals. Always ensure the power is disconnected before beginning.
Yes. Capacitors store a significant electrical charge even after the power is turned off. Before touching the terminals, you must discharge the capacitor by placing an insulated screwdriver across the two terminals to bridge the connection. Failure to discharge the capacitor can result in a dangerous electrical shock.
Before installing, inspect the motor's centrifugal switch. If the switch is stuck in the 'open' position, it will prevent the start capacitor from engaging, which can cause the new capacitor to overheat and fail prematurely. Additionally, ensure the mounting area is free of debris to allow for proper heat dissipation.