[Lifetime Warranty] 45+7.5 uF MFD 370/440 VAC Round Dual Run Capacitor CBB65 CBB65A - Fits AC Unit Fan Motor, Heat Pump

45+7.5 MFD uf 370 or 440 Volt VAC Round Dual Run Capacitor CBB65A

Key Features

• Capacitance Rating: 45 + 7.5 Microfarad (MFD/uF)
• Voltage Rating: 370 or 440 Volts AC (VAC)
• Capacitance Tolerance: ±6%
• Operating Frequency: 50/60 Hz
• Operating Temperature Range: -40°C to +70°C (-104°F to +158°F)
• Case Material: Aluminum, round case design
• Dimensions: 2.36 in Diameter x 4.73 in Height (60 mm x 120 mm)
• Terminals: 3-terminal design for Common (C), Fan (F), and Compressor (HERM)
• Safety: Internal pressure-sensitive interrupter; Non-PCB dielectric fluid
• Compliance: Meets EIA-456-A industry standards for 60,000 hours of operational life

Replaces / Cross-Reference Part Numbers

• This is a universal replacement for round dual run capacitors with matching specifications.
• Replaces any capacitor with a 45/7.5 MFD rating and a voltage of 370V or 440V.
• Can be used to replace a 370V rated capacitor, as 440V is a higher voltage rating. Do not use a 370V to replace a 440V capacitor.

Compatibility & Fitment

• Designed for heavy-duty, continuous use in HVAC systems.
• Powers both a compressor motor (45 MFD) and a fan motor (7.5 MFD) simultaneously.
• Commonly used in residential and commercial air conditioner (AC) condensing units and heat pumps.
• Verify physical dimensions to ensure proper fit within the unit's mounting bracket and available space.

When to Replace

• Outdoor unit produces a humming sound, but the compressor or fan fails to start.
• Fan blades do not spin without a manual push-start.
• AC system blows warm air or fails to cool.
• Visible signs of failure on the existing capacitor, such as a swollen or bulging top, rust, or fluid leakage.
• Frequent tripping of the circuit breaker when the AC unit attempts to start.

Installation Tips

• Disconnect all electrical power to the HVAC unit before servicing.
• Safely discharge the stored energy from the old capacitor by shorting the terminals with an insulated-handle tool.
• Note or photograph the wire connections to the C, F, and HERM terminals before removing the old part.
• Ensure the MFD and voltage ratings of the replacement part match the original specifications.
• Secure the new capacitor firmly in the mounting strap to prevent damage from vibration.