40+7.5 uF MFD ±5% 370/440 VAC Dual Run Start Round AC Capacitor CBB65 CBB65B 50/60 Hz 10000AFC - Fits Condenser, Heat Pump
BlueStars 40+7.5 uF dual run round AC capacitor for condenser and heat pump units.
Four-step installation guide for 40+7.5 MFD dual run AC capacitor showing power disconnection and wiring process.
Informational graphic showing when to replace a 40+7.5 uF dual run AC capacitor for condensers and heat pumps.
BlueStars 40+7.5 uF dual run round AC capacitor for air conditioner and heat pump systems.
BlueStars 40+7.5 uF dual run round AC capacitor with dimensions and certification labels shown.
Technical specification chart for 40+7.5 uF 370/440 VAC dual run round AC capacitor with product image.
Diagram showing 3-terminal layout for 40+7.5 uF dual run start AC capacitor with Common, Herm, and Fan labels.
BlueStars 40+7.5 uF dual run round AC capacitor with aluminum case and metalized polypropylene film construction.
Infographic guide for selecting a 40+7.5 uF dual run AC capacitor for condenser and heat pump systems.
40+7.5 uF dual run round AC capacitor for condenser and heat pump repair.
Technician repairing an AC unit with a 40+7.5 uF dual run start capacitor shown in the foreground.
Infographic showing wide range applications for 40+7.5 uF dual run capacitor in AC, refrigerator, heat pump, and compressor.
BlueStars 40+7.5 uF dual run round AC capacitor for condenser and heat pump units.
Four-step installation guide for 40+7.5 MFD dual run AC capacitor showing power disconnection and wiring process.
Informational graphic showing when to replace a 40+7.5 uF dual run AC capacitor for condensers and heat pumps.
BlueStars 40+7.5 uF dual run round AC capacitor for air conditioner and heat pump systems.
BlueStars 40+7.5 uF dual run round AC capacitor with dimensions and certification labels shown.
Technical specification chart for 40+7.5 uF 370/440 VAC dual run round AC capacitor with product image.
Diagram showing 3-terminal layout for 40+7.5 uF dual run start AC capacitor with Common, Herm, and Fan labels.
BlueStars 40+7.5 uF dual run round AC capacitor with aluminum case and metalized polypropylene film construction.
Infographic guide for selecting a 40+7.5 uF dual run AC capacitor for condenser and heat pump systems.
40+7.5 uF dual run round AC capacitor for condenser and heat pump repair.
Technician repairing an AC unit with a 40+7.5 uF dual run start capacitor shown in the foreground.
Infographic showing wide range applications for 40+7.5 uF dual run capacitor in AC, refrigerator, heat pump, and compressor.
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40+7.5 uF MFD ±5% 370/440 VAC Dual Run Start Round AC Capacitor CBB65 CBB65B 50/60 Hz 10000AFC - Fits Condenser, Heat Pump

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40+7.5 uF 40/7.5 MFD ±5% 370/440 VAC Dual Run Start Round AC Capacitor

Key Features

  • Dual capacitance rating: 40 Microfarad and 7.5 Microfarad
  • Capacitance tolerance: ¬±5%
  • Dual voltage rating: 370 VAC or 440 VAC
  • Operating frequency: 50/60 Hz
  • Case shape: Round
  • Terminals: C (Common), H (Hermetic for Compressor), F (Fan)
  • Construction meets CBB65 standard
  • Dielectric fluid contains no PCBs

Replaces / Cross-Reference Part Numbers

  • Serves as a universal replacement for capacitors with matching 40/7.5 MFD and 370V or 440V specifications.
  • Compatible with parts from multiple brands including Packard TRCFD4075, Genteq, Amrad USA2235, and others.
  • Always verify capacitance (MFD), voltage (VAC), and physical dimensions before ordering.

Compatibility & Fitment

  • Designed for HVAC systems, including central air conditioners and heat pumps.
  • Simultaneously powers a compressor motor (40 MFD) and a fan motor (7.5 MFD) in outdoor condenser units.
  • Suitable for single-phase AC motor run applications requiring a dual capacitor.
  • Confirm physical dimensions (diameter and height) for proper fit within the unit's mounting bracket.

When to Replace

  • Outdoor unit fan is not spinning or turns slowly.
  • Compressor hums but fails to start.
  • Air conditioner blows warm air.
  • Visible signs of capacitor failure such as a swollen or bulging top, leaking fluid, or heavy corrosion.
  • Capacitance measures outside the rated tolerance when tested with a multimeter.

Installation Tips

  • WARNING: Stored electrical charge can cause severe shock. Disconnect all power to the HVAC unit at the breaker and service disconnect before handling.
  • Safely discharge the existing capacitor by carefully shorting across the terminals with an insulated-handle screwdriver.
  • Document or photograph the wire placement on the old capacitor's terminals (C, H, F) before disconnecting.
  • Connect the wires to the corresponding terminals on the new capacitor.
  • Secure the new capacitor in the mounting strap to prevent vibration damage.
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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

Common signs of a failing capacitor include the AC unit failing to start, a humming sound coming from the compressor, or the fan motor struggling to spin or requiring a push to get started. If the top of the capacitor is domed or bulging, or if you notice a burnt smell or leaking oil, the unit has likely failed and requires immediate replacement.
Yes. This capacitor is designed to be a universal replacement for both 370V and 440V applications. A 440V rated capacitor can safely replace a 370V unit of the same microfarad (MFD) rating, as it offers a higher voltage tolerance, which often results in a longer service life.
The terminals are clearly marked for proper wiring: 'C' stands for Common, which connects to the power supply; 'HERM' stands for Hermetic Compressor, which powers the compressor motor; and 'FAN' powers the condenser fan motor.
Capacitors are maintenance-free components, but they are sensitive to heat. Ensure your condenser unit has proper airflow and that the outdoor coils are kept clean. Restricted airflow causes the system to run hotter, which significantly shortens the lifespan of the capacitor.
You will need a screwdriver to remove the access panel, a pair of insulated needle-nose pliers to disconnect the wires, and a pair of insulated pliers or a screwdriver with an insulated handle to safely discharge the old capacitor before handling it. Always turn off the power to the HVAC unit at the disconnect box or circuit breaker before beginning any work.
For most technicians and experienced DIYers, the installation takes approximately 15 to 30 minutes. The process involves discharging the old unit, transferring the wires to the corresponding terminals on the new unit, and securing the capacitor in the mounting bracket.