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Round Motor Run Capacitor, 370 Volts 30 MFD

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Round Motor Run Capacitor, 370 VAC 30 MFD

SKU: CR30X370R Manufacturer: International Refrigeration

Availability: Ships same day - if ordered by 2:pm Est.

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Quick Overview
Round Motor Run Capacitor MFD Rating 30 370VAC 60/50 Hz Oval Height: (In.) 2 5/8 Can Diam.: (In.) 1 1/2 EIA UL Base A 1/4 In Male Terminals Temp Range -40 to 69 C

Round Oil-Filled Motor Run Capacitors 370-VAC

Non-PCB dielectric fluid. Pressure-activated circuit interrupter virtually eliminates case rupture at end of life. For continuous heavy duty application such as air conditioning, refrigeration, business machines, fans, light, ballasts, etc. Seamless steel cases. 1/4", four blade quick disconnect terminal with phenolic insulated caps. Dimensions may vary due to manufacturing changes. Dimensions shown are for reference only.


Design For:

Motors, Air Conditioners and Refrigerators



  • Hermetically Sealed
  • Hermetically Sealed Aluminum Case
  • Non-PCB dielectric fluid
  • UL listed
  • Small Dimensions For Easy Deplacement


  • Construction: Hermetically Sealed Aluminum Case
  • Voltage: 370
  • MFD: Rating 30
  • Hz: 60/50
  • Type: Motor Run
  • Shape: Round
  • Can Diam..: (In.) 1 1/2
  • Height: (In.) 2 5/8
  • Temp.: Range (C) -40 to 65
  • Terminals: 1/4" four-blade quick discounnect with phenolic insulated caps




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.

Additional Information

Stock Status Ships same day - if ordered by 2:pm Est.
Manufacturer International Refrigeration
Condition new
MFD Rating Single-Caps 30
Shape Round
VAC 370
Dimensions DIam. 1 1/2 in, Height 2 5/8 In
Note When identifying the capacitor that you have, you might see the rating stated in "MFD" or "UF." "MFD" and "UF" meaning microfarad rating.

How do I know when a capacitor is bad?

The air conditioner unit will not come on. Either the outdoor fan does not run, the compressor does not run, or both the fan and the compressor do not run. The breaker on the outdoor unit has been checked and reset, but the outdoor unit still does not come on. You can hear a little humming sound inside the unit which is the low voltage contactor humming. The capacitor may be swollen or even blown apart with capacitor oil.

How To Check

How to Check a Start Capacitor

1) Remove the start capacitor and use a screwdriver to shorten the two terminals and discharge the electricity from it.

2) Set your analog meter on 1k ohms.

3) Touch the two terminals with your ohms meter test leads.

4) Reverse the way that you were touching the two terminals with your ohms meter test leads.

5) The needle in your meter should swing to 0 ohms and swing back to infinity every time that you reverse the ohms meter test lead on the start capacitor.

6) If it does that, the start capacitor is good.

7) Set the meter. On a digital meter, set it to at least 1k ohms.

8) Touch the two terminals with your ohms meter test leads.

9) Reverse the way that you were touching the two terminals with your ohms meter test leads.

10) Notice that the meter will display some numbers for a second.

11) Then it will return to OL (open line). It should do this every time that you switch the ohms meter test leads position.

12) If it does this, the start capacitor is good.

Product Ship Weight 0.5000
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