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Oval metal capacitor can with three terminal posts on top

SUPCO

SUPCO CD45+15X370 HVAC Control 45+15 MFD 370V Oval

SKU CH-P8ZB-WTHEF MPN CD45

Dual-run capacitor powers compressor and fan motors with 45 + 15 MFD at 370 volts in an oval steel case

  • Rated voltage370
  • Dual run capacitor powers both compressor and fan motors from one component
  • 45 + 15 MFD at 370 volts matches common HVAC replacement specifications
  • Physical interrupter and non-PCB biodegradable oil provide built-in safety and environmental protection
  • Drawn steel case with quad blade terminals ensures durable mounting and secure connections
  • UL and VDE agency listings confirm compliance with recognised safety standards

HVAC Motor Oval Dual Run Capacitor

This SUPCO CD45+15X370 is a dual run capacitor designed for HVAC compressors and fan motors. It combines 45 MFD for the compressor and 15 MFD for the fan in a single oval case rated at 370 volts. Professional technicians use it as a direct replacement for Packard POCD4515A and Mars 12837 parts in air conditioning and refrigeration systems.

Sustained Load Behaviour

The capacitor operates reliably across a wide temperature range from -40 to 185 degrees Fahrenheit, or -40 to 85 Celsius. Its non-PCB biodegradable synthetic oil maintains dielectric performance during continuous duty cycles in condenser units and furnace blowers. A built-in physical interrupter disconnects the element internally if pressure rises excessively, preventing case rupture during prolonged thermal stress.

Interface Practical Limits

The oval drawn-steel case measures 2.8125 by 4.9375 by 1.75 inches, with terminals adding approximately half an inch to the installed height. Three terminal sets labelled Fan, Herm, and C accept quad-blade quick-connect leads for secure attachment. Capacitance tolerance is held to plus or minus five percent, and the unit carries UL and VDE agency recognition for 370-volt AC motor-run applications.

How it compares

Measured against everything we stock in Heating & Cooling Controllers, at today’s prices. Recalculated every night.

Price $10.99
Cheaper than about 88% of the 1,762 comparable items (median $45.99).

Specifications

Product
Brand nameSupco
Model nameCD45+15 × 370
Power
Rated voltage370

Questions about this item

How much heat can the CD45+15X370 handle during continuous daily operation?

The capacitor is rated for an operating temperature range of -40 °F to 185 °F (-40 °C to 85 °C), so it will tolerate the heat inside an air-conditioning or furnace cabinet running all day.

What wiring and terminals must my system already have to install this dual run capacitor?

Your equipment needs three sets of quick-connect terminals labelled Fan, Herm and C to match the capacitor’s quad-blade terminals and Type Two terminal layout.

Will the oval CD45+15X370 fit in the same bracket as my old Packard POCD4515A or Mars 12837 capacitor?

Yes — it is a direct replacement for both the Packard POCD4515A and Mars 12837, sharing the same oval dimensions of 2.8125″ × 4.9375″ × 1.75″ plus ½″ for the terminals.

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