York Brand 30+5 uF MFD 370/440 VAC Round Dual Run Capacitor CBB65 CBB65B - Fits AC Motor Run, Fan Start, Condenser
30+5 uF 370/440 VAC round dual run capacitor for AC motor and condenser fan start.
Infographic showing wide range applications for 30+5 uF dual run capacitor in AC, refrigerator, heat pump, and compressor.
Four-step installation guide for 30+5 uF 370/440 VAC dual run capacitor on an AC condenser unit.
Infographic showing two 30+5 uF 370/440 VAC round dual run capacitors with signs indicating when to replace AC parts.
BlueStars 30+5 uF 370/440 VAC round dual run capacitor for AC motor and condenser units.
BlueStars 30+5 uF 370/440 VAC round dual run capacitor with dimensions and safety certification labels.
Specification chart for 30+5 uF 370/440 VAC round dual run capacitor with technical details and dimensions.
Diagram showing 3-terminal layout for 30+5 uF dual run capacitor with Common, Herm, and Fan terminal labels.
Infographic showing 30+5 uF 370/440 VAC round dual run capacitor with aluminum case and metalized polypropylene film details.
Educational infographic showing how to choose a 30+5 uF 370/440 VAC dual run capacitor for AC motor and fan systems.
Technician installing a 30+5 uF 370/440 VAC round dual run capacitor into an AC condenser unit.
30+5 uF 370/440 VAC round dual run capacitor for AC motor and condenser repair with technician in background.
Infographic showing applications for 30+5 uF dual run capacitor in AC units, refrigerators, heat pumps, and compressors.
30+5 uF 370/440 VAC round dual run capacitor for AC motor and condenser fan start.
Infographic showing wide range applications for 30+5 uF dual run capacitor in AC, refrigerator, heat pump, and compressor.
Four-step installation guide for 30+5 uF 370/440 VAC dual run capacitor on an AC condenser unit.
Infographic showing two 30+5 uF 370/440 VAC round dual run capacitors with signs indicating when to replace AC parts.
BlueStars 30+5 uF 370/440 VAC round dual run capacitor for AC motor and condenser units.
BlueStars 30+5 uF 370/440 VAC round dual run capacitor with dimensions and safety certification labels.
Specification chart for 30+5 uF 370/440 VAC round dual run capacitor with technical details and dimensions.
Diagram showing 3-terminal layout for 30+5 uF dual run capacitor with Common, Herm, and Fan terminal labels.
Infographic showing 30+5 uF 370/440 VAC round dual run capacitor with aluminum case and metalized polypropylene film details.
Educational infographic showing how to choose a 30+5 uF 370/440 VAC dual run capacitor for AC motor and fan systems.
Technician installing a 30+5 uF 370/440 VAC round dual run capacitor into an AC condenser unit.
30+5 uF 370/440 VAC round dual run capacitor for AC motor and condenser repair with technician in background.
Infographic showing applications for 30+5 uF dual run capacitor in AC units, refrigerators, heat pumps, and compressors.
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30+5 uF MFD 370/440 VAC Round Dual Run Capacitor CBB65 CBB65B - Fits AC Motor Run, Fan Start, Condenser

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30+5 MFD 30/5 uF 370-440 Volt Volts Round Dual Run Capacitor

Key Features

  • Capacitance: 30 + 5 Microfarad (uF/MFD)
  • Voltage Rating: 370 or 440 VAC
  • Frequency: 50/60 Hz
  • Design: Dual run capacitor for two electric motors (compressor and fan)
  • Case Shape: Round
  • Terminals: 3 (Common, Fan, Hermetic Compressor)
  • Capacitance Tolerance: +/- 5%
  • Standard Type: CBB65

Replaces / Cross-Reference Part Numbers

  • Replaces any round dual run capacitor with matching 30/5 MFD and 370V or 440V specifications.
  • Amrad Engineering: USA2226
  • Part Number: 331441

Compatibility & Fitment

  • For use in HVAC systems, central air conditioners, heat pumps, and condensing units.
  • Powers both a compressor motor and a fan motor from a single component.
  • To ensure fitment, verify that your system's required specifications match this capacitor's MFD rating (30/5), voltage (370V or 440V), and physical shape (round).

When to Replace

  • Compressor or fan motor fails to start or experiences a hard start.
  • A humming noise is heard from the unit, but the motor does not engage.
  • The air conditioner unit is running but blows warm air.
  • The capacitor case is physically swollen, bulging at the top, or leaking fluid.

Installation Tips

  • Disconnect all electrical power to the HVAC unit before servicing.
  • Safely discharge the existing capacitor to avoid risk of electric shock.
  • Note the wire placement on the old capacitor's terminals (C, FAN, HERM) before disconnecting.
  • Connect wires to the corresponding terminals on the new capacitor.
  • Ensure the capacitor is securely mounted within the unit's housing.
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  • Step 1

    Step 1

    Turn off the power and locate the capacitor
  • Step 2

    Step 2

    Discharge any stored electricity by shorting the terminals
  • Step 3

    Step 3

    Take a photo or note how the wires connect. Disconnect wires & install the new capacitor.
  • Step 4

    Step 4

    Reassemble and test

FAQ

This dual run capacitor serves two separate components within your HVAC system. The 30 uF section provides the necessary start and run torque for the compressor, while the 5 uF section is dedicated to the condenser fan motor.
Yes. This capacitor is rated for both 370 VAC and 440 VAC. It is perfectly safe to use a 440 VAC capacitor in a system originally equipped with a 370 VAC part, as the higher voltage rating indicates the capacitor's ability to withstand electrical stress, which often results in a longer service life.
A failing capacitor often presents as a humming sound from the outdoor unit without the fan or compressor starting, the fan motor struggling to reach full speed, or the system failing to cool despite the thermostat calling for air. If you notice the top of the capacitor is domed or bulging, it has failed and requires immediate replacement.
Installation typically takes 15 to 30 minutes. You will need a screwdriver to remove the access panel, a pair of insulated needle-nose pliers to disconnect the spade terminals, and a pair of insulated pliers or a screwdriver with an insulated handle to safely discharge the old capacitor before handling it. Always ensure the power to the unit is completely disconnected at the breaker before beginning.
Yes. Even when the power is turned off, a capacitor can hold a significant electrical charge. After removing the access panel, use an insulated-handle screwdriver to short across the terminals to safely discharge any remaining energy before touching the wires.
The most common causes of failure are extreme heat, power surges, and age. Capacitors are oil-filled components that degrade over time; high ambient temperatures in the condenser unit can accelerate the breakdown of the internal dielectric material, eventually leading to a loss of capacitance.