30 uF MFD ±5% 370V 440V AC CBB65 Multi-Purpose Motor Run Round Capacitor - CE cRUus Certified
30 uF 370V/440V CBB65 round motor run capacitor with terminal connectors and product label.
30 uF CBB65 round motor run capacitor with CE and cRUus certification labels.
Dimension diagram of 30uF 370V/440V CBB65 motor run capacitor showing height and diameter measurements.
Comparison chart showing height difference between upgraded compact 30uF CBB65 motor run capacitor and previous version.
Infographic showing the compact size and optimized fit of a 30uF CBB65 motor run capacitor in an AC cabinet.
Diagram showing minimum clearance requirements for 30 uF CBB65 motor run capacitor installation.
Infographic showing technical specifications for a 30uF 370V/440V CBB65 round motor run capacitor.
Close-up of 30 uF motor run capacitor showing 2-pin quick connect terminals and installation diagram.
Diagram showing internal components and specifications of a 30uF CBB65 motor run capacitor with 1/4 inch terminals.
Educational infographic showing 30 uF 370V/440V CBB65 motor run capacitor specifications and selection guide.
30 uF 370V/440V CBB65 round motor run capacitor with terminal connectors and product label.
30 uF CBB65 round motor run capacitor with CE and cRUus certification labels.
Dimension diagram of 30uF 370V/440V CBB65 motor run capacitor showing height and diameter measurements.
Comparison chart showing height difference between upgraded compact 30uF CBB65 motor run capacitor and previous version.
Infographic showing the compact size and optimized fit of a 30uF CBB65 motor run capacitor in an AC cabinet.
Diagram showing minimum clearance requirements for 30 uF CBB65 motor run capacitor installation.
Infographic showing technical specifications for a 30uF 370V/440V CBB65 round motor run capacitor.
Close-up of 30 uF motor run capacitor showing 2-pin quick connect terminals and installation diagram.
Diagram showing internal components and specifications of a 30uF CBB65 motor run capacitor with 1/4 inch terminals.
Educational infographic showing 30 uF 370V/440V CBB65 motor run capacitor specifications and selection guide.
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30 uF MFD ±5% 370V 440V AC CBB65 Multi-Purpose Motor Run Round Capacitor - CE cRUus Certified

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30 uF MFD ±5% 370V 440V AC CBB65 Multi-Purpose Motor Run Round Capacitor

Key Features

  • Capacitance: 30 uF (MFD)
  • Tolerance: ±5%
  • Voltage Rating: 370V/440V AC
  • Frequency: 50/60 Hz
  • Design: CBB65 round metal casing
  • Certifications: CE and cRUus compliant
  • Operating Temperature: -25°C to +70°C (-13°F to 158°F)

Replaces / Cross-Reference Part Numbers

  • Commonly replaces CBB65A and CBB65B series capacitors
  • Compatible with standard industry part numbers rated for 30 uF at 370V or 440V
  • Suitable replacement for various generic HVAC motor run capacitor specifications

Compatibility & Fitment

  • Designed for use in HVAC systems, including air conditioners, heat pumps, and condenser fan motors
  • Suitable for general-purpose motor run and start-up applications
  • Compatible with equipment requiring a 30 uF capacitor rating
  • Verify diameter and height requirements against your current unit for proper physical fitment

When to Replace

  • Visible bulging, swelling, or leaking on the top or sides of the capacitor
  • Motor fails to start or struggles to reach operational speed
  • Humming or buzzing sounds coming from the motor unit
  • System performance decrease or frequent tripping of circuit breakers
  • Measured capacitance falls outside the ±5% tolerance range when tested with a multimeter

Installation Tips

  • Ensure power is completely disconnected from the HVAC unit before service
  • Safely discharge the capacitor using an insulated screwdriver across terminals before handling
  • Take a photograph of existing wiring configurations before removal to ensure correct reconnection
  • Ensure terminals are clean and secure to prevent arcing and heat buildup
  • Always match the microfarad (uF) rating exactly; the voltage rating must be equal to or greater than the original component

FAQ

Yes. This capacitor is rated for both 370V and 440V applications. It is perfectly safe to use this part as a replacement for an existing 440V capacitor, provided the microfarad (uF) rating matches your equipment requirements.
Common signs of a failing capacitor include a humming sound from the motor without it starting, the fan or compressor struggling to spin, or the motor failing to start entirely. If the top of the capacitor appears domed or swollen, or if there is any visible leaking or burning, the unit has failed and must be replaced.
This CBB65 capacitor is designed for use in a wide range of HVAC and motor applications, including air conditioning units, heat pumps, condenser fans, pool pumps, and general-purpose electric motor run applications.
Safety is critical. Before touching the old capacitor, ensure the power to the equipment is completely disconnected at the breaker. Because capacitors store an electrical charge even when the power is off, you must discharge the old capacitor by placing an insulated screwdriver across the terminals before attempting to remove the wires.
The installation is generally straightforward and typically requires only a screwdriver or a nut driver to open the equipment access panel and remove the mounting bracket. You may also need needle-nose pliers to assist in sliding the wire connectors off the old terminals and onto the new ones.
Capacitors are sensitive to heat and age. Over time, the internal dielectric material degrades due to the high operating temperatures inside the equipment cabinet. Frequent power surges and extreme ambient temperatures can also accelerate this degradation, eventually leading to a loss of capacitance and motor failure.