Siemens Brand 120 uF MFD 250 VAC CBB60 50/60 Hz Run Capacitor with Screw - Fits AC Motor Run, Heat Pump, Pool Pump
120 uF 250 VAC CBB60 motor run capacitor with its branded product packaging box.
120 uF CBB60 run capacitor showing 5.7 inch height and 1.85 inch diameter dimensions for motor compatibility.
Infographic showing AC motor symptoms for 120 uF CBB60 run capacitor replacement.
Woman relaxing on a couch under a wall-mounted AC unit, promoting BlueStars HVAC DIY repair solutions.
Woman relaxing on a couch under a wall-mounted AC unit, promoting BlueStars DIY HVAC repair solutions.
120 uF 250 VAC CBB60 motor run capacitor with its branded product packaging box.
120 uF CBB60 run capacitor showing 5.7 inch height and 1.85 inch diameter dimensions for motor compatibility.
Infographic showing AC motor symptoms for 120 uF CBB60 run capacitor replacement.
Woman relaxing on a couch under a wall-mounted AC unit, promoting BlueStars HVAC DIY repair solutions.
Woman relaxing on a couch under a wall-mounted AC unit, promoting BlueStars DIY HVAC repair solutions.
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120 uF MFD 250 VAC CBB60 50/60 Hz Run Capacitor with Screw - Fits AC Motor Run, Heat Pump, Pool Pump

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120 uF MFD 250 VAC CBB60 50/60 Hz Run Capacitor with Screw

Key Features

  • Model: CBB60
  • Capacitance: 120 Microfarad (µF/MFD)
  • Voltage Rating: 250 VAC
  • Frequency: 50Hz / 60Hz
  • Shape: Cylindrical
  • Termination: Wire Leads

Replaces / Cross-Reference Part Numbers

  • Replaces any run capacitor with matching specifications.
  • Ensure the replacement has a capacitance of 120 µF (within tolerance) and a voltage rating of 250 VAC or higher.

Compatibility & Fitment

  • Designed for starting and running single-phase AC motors.
  • Common applications include air conditioners, compressors, pumps, and washing machines.
  • Verify physical dimensions to ensure proper fit in the mounting bracket.

When to Replace

  • Motor hums but fails to start or starts slowly.
  • Motor does not reach its rated speed.
  • Capacitor casing is physically damaged, swollen, or leaking.
  • Capacitance measures outside of the component's specified tolerance.

Installation Tips

  • Disconnect electrical power from the equipment before servicing.
  • Discharge the existing capacitor by shorting its terminals with a properly insulated tool.
  • Note the wire positions before disconnecting the old component.
  • Confirm the new capacitor's voltage and microfarad ratings meet or exceed the original part's specifications.
Product image
Product image
  • Benefits

    Benefits

    Start capacitors are needed at the beginning of each cycle and run capacitors are necessary for keeping HVAC running throughout the cycle. Replacing bad capacitors can help promote efficient operation and lengthen the life of your HVAC units
  • Energy Saving

    Energy Saving

    This capacitor will provide your electric motors with an outstanding electrical characteristic of high capacitance stability over time and temperature, and very low internal power loss.
  • Premium Quality

    Premium Quality

    The product is made of strong & durable materials that prevent cracking and failing during the installation and use process.
  • Safe To Install

    Safe To Install

    The capacitor is engineered for safety and ensure security when replacing
Shape
‎Round Run
Capacitance tolerance
‎± 5%
Rated voltage
‎AC 250V
Temperature range
‎-25°C to +70°C / -13°F to 158°F
Capacitor Dimensions
‎55mm x 117mm
Engineered For Safety
‎10000 AFC Anti Explosion Pressure Switch

FAQ

If your motor is struggling to start, humming without turning, or running at a lower-than-normal speed, the capacitor is often the culprit. You may also notice the motor overheating or the equipment tripping its thermal overload breaker. If the capacitor casing appears bulged, cracked, or shows signs of leaking oil, it has failed and requires immediate replacement.
It is critical to match the capacitance (120uF/MFD) exactly. Regarding voltage, you can use a capacitor with a higher voltage rating than your original (e.g., replacing a 250VAC with a 370VAC or 450VAC), but you should never use a capacitor with a lower voltage rating than what is specified for your motor.
Replacing a run capacitor is a straightforward task that typically takes 15 to 30 minutes. You will need a screwdriver to remove the access panel and a pair of insulated pliers to disconnect the spade terminals. Always ensure the power is completely disconnected and discharge the old capacitor with an insulated screwdriver across the terminals before handling it.
CBB60 refers to the construction type of the capacitor, which utilizes a metallized polypropylene film. These are specifically designed for continuous run applications in AC motors, such as pool pumps, compressors, and heat pumps, providing high stability and reliable performance under 50/60Hz frequencies.
No, this is a non-polarized AC capacitor. It does not matter which wire connects to which terminal; you can connect your existing leads to either terminal on the capacitor interchangeably.
Before installing, inspect the motor's wiring for any signs of heat damage or loose connections. Additionally, ensure the mounting area is clean and dry. Since this unit includes a fixing stud, verify that the mounting bracket is secure to prevent vibration, which can lead to premature failure of the internal components.