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Oval metal capacitor with quad terminals, 2.8 by 3.75 by 1.75 inches

SUPCO

SUPCO CD35 HVAC control dual run capacitor 35 + 5 MFD 370 V

SKU CH-W7W4-8JCNN MPN CD35

An oval dual-run capacitor supplying 35 + 5 MFD at 370 VAC for air-conditioning and refrigeration compressors, furnace blowers and condenser fan motors

  • Voltage370
  • Dual 35 + 5 MFD rating powers compressor and fan simultaneously
  • 370 VAC rating matches standard HVAC system voltage requirements
  • Oval steel case measures 2.8125" × 3.75" × 1.75" for tight mounting spaces
  • UL and VDE certified with internal interrupter for safe operation
  • Operates reliably from -40 °F to 185 °F across extreme conditions

Dual Capacitor for HVAC Motors

The Supco CD35 oval dual run capacitor provides 35 + 5 MFD at 370 VAC for air-conditioning compressors, refrigeration compressors, furnace blower motors and condenser fan motors. It replaces Packard POCD355 and Mars 12972 units in compatible equipment. UL and VDE agency listings confirm the safety construction.

Voltage and Temperature Limits

Rated for 370 VAC, the capacitor must not be used on systems that exceed this voltage. Operating temperature range is -40 to 185 degrees F (-40 to 85 C); environments outside this span are not supported. Tolerance is +/- 5 % on each capacitance value, so measured microfarads will vary within that band.

Upgrade From Single Capacitors

This dual unit combines separate start and run capacitors into one oval case measuring 2.8125 x 3.75 x 1.75 inches plus terminal height. The jump is worth it when the original installation uses two individual capacitors and space allows the 3.75 inch height. It is not for systems requiring a different microfarad rating or a higher voltage class.

Highlights

  • Dual 35 + 5 MFD rating powers compressor and fan simultaneously
  • 370 VAC rating matches standard HVAC system voltage requirements
  • Oval steel case measures 2.8125" × 3.75" × 1.75" for tight mounting spaces
  • UL and VDE certified with internal interrupter for safe operation
  • Operates reliably from -40 °F to 185 °F across extreme conditions

Specifications

BrandSupco
ModelCD35+5X370
Voltage370

Questions about this item

Should I choose the 35+5 MFD dual capacitor or a different capacitance for my compressor?

Select the 35+5 MFD value only if your equipment nameplate specifies exactly 35 µF for the compressor and 5 µF for the fan; using a different rating can cause motor overheating or failure to start.

What does the 370 VAC rating mean once the capacitor is installed in my air-conditioning unit?

The 370 VAC rating is the maximum continuous voltage the capacitor can withstand; it must equal or exceed the highest voltage the circuit will see in service.

The capacitor uses quad-blade quick-connect terminals — what wire gauge do they accept?

The quad-blade quick-connect terminals are designed for standard 1/4-inch female spade connectors commonly used on HVAC compressor and fan motor leads.

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