Description
TradePro 40 µF 440 VAC Round Run Capacitor
The TradePro TP-CAP-40/440R-A is a 40 µF, 440-volt round run capacitor for air conditioners, heat pumps and other HVAC equipment. A single run capacitor gives a PSC motor the phase shift it needs to start and run efficiently. A 40 µF rating is typically specified for compressors or larger motors; always match the µF rating printed on the motor or the original capacitor.
Replacement basics
- Match the µF rating to the old capacitor or the equipment label; a tolerance of a few percent is normal
- A 440 V rating safely replaces a 370 V capacitor of the same µF, but never use a 370 V part where 440 V is called for
- Round case; confirm it fits the mounting strap or bracket in the unit
- Turn the power off at the disconnect and discharge the old capacitor before removing it
A weak or failed run capacitor is one of the most common reasons a condenser hums, a fan will not spin, or a compressor runs hot. Keeping a correctly rated spare on the truck saves a second trip.
