dual run round 440vac capacitor

Dual Run Capacitor, 440 Volt UF 40-5

Mfg. Model #: CD40/5X440R


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Used in Trane, Goodman, Carrier, Payne, Bryant, York and many other brands of Air Conditioning equipment

Dual motor capacitors enables the motor or compressor to run smoothly and more efficient by storing a charge for the  motor when the voltage reaches the zero point and keeps the voltage steady instead of all the up and down voltage drops.



  • Hermetically Sealed
  • Oil Filled
  • Non PCB Oil
  • Metal Case
  • Metalic Film
  • Four Blade Connection Terminals
  • Insulated Terminals
  • UL Listed

Technical Specifications:
Capacitance 40 ~ 5 uF.
Rated Voltage 440 VAC
Hz 50/60
Capacitor Type Aluminum Electrolytic


How to install a new Dual Run Capacitor ?

  2. Use a screwdriver to shorten the terminals and discharge the electricity from it.
  3. Remove one wire at a time from the old capacitor and Install it to the correct terminal on the new capacitor.
  4. On the top of the capacitor find three markings stamped into the metal next to each terminal wire port.
  5. One terminal is marked "HERM", Means Hermetic which represents the compressor.
  6. One Terminal is marked "C", this is the COMMON side of the capacitor.
  7. Terminal "F" or  "FAN", Means the Condenser Fan Motor.



Vertical mounting of the capacitor with the terminals
up is recommended. However, horizontal mounting is
acceptable providing the vent is located in the up position.
Vertical mounting with the terminals down is not
recommended because the capacitor life may be reduced
and the operation of the pressure relief vent impaired.



Because the watt–second value of these capacitors is
high, precautions should be taken during the testing
of these devices.
Discharge resistors should be specified when there is
a possibility of a residual charge left on the capacitor
or to protect contacts. Mis–application, such as exceeding
design limits or applying continuous AC voltage,
may result in destruction or explosion of capacitors.



Product Info

  • In Stock In Stock
Dual Run Capacitor

Capacitor Specs

Dual Motor Run
440 v
  • Round Round
1/4" - 4 Blade Quick Disconnect With Phenolic Insulated
American Standard, Trane, Rheem, Carrier, Bryant, Payne, Lennox, Goodman, Ruud, Armstrong, refrigeration, business machines, fans, light ballasts, etc.

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