Mars 12642 Dual Run Capacitor 65/5 Mfd 440/370V Round

Product Description

The MARS 12642 is a round dual run capacitor rated at 65/5 microfarads (MFD) and dual-voltage rated for 440/370 volts, designed for continuous duty in single-phase induction motor applications. It provides simultaneous phase shift support for both the compressor and fan motor circuits within a single housing. Construction features a metallized polypropylene dielectric and an aluminum case, delivering stable capacitance across high-demand operating cycles. Licensed HVAC technicians install this capacitor as a field replacement or new installation component in residential and light commercial air conditioning and heat pump systems.

This capacitor is suited for split-system air conditioners and heat pumps where a single dual-rated capacitor serves both the compressor and condenser fan motor. The 65 MFD section supports the compressor start and run circuit, while the 5 MFD section supports the fan motor run circuit. Its round form factor and compact dimensions make it compatible with standard capacitor mounting brackets found in most condensing unit control compartments. The 440/370V dual voltage rating accommodates common field voltage variations without derating.

Key Features

• Dual capacitance rating: 65 MFD (compressor) and 5 MFD (fan motor) in one round housing
• Dual voltage rating: 440/370 volts for flexible field installation
• Metallized polypropylene dielectric construction for stable, long-term capacitance
• Aluminum case with round form factor fits standard condensing unit bracket mounts
• Rated for 50/60 Hz operation
• OEM-quality replacement suitable for new installations and field service

Compatibility

Designed as an OEM-style replacement dual run capacitor for single-phase residential and light commercial HVAC condensing units requiring a 65/5 MFD, 440/370V round capacitor.

Installation Notes

Installation should be performed by a licensed HVAC technician. Disconnect and lock out all power to the unit before servicing the capacitor, and discharge the existing capacitor fully before handling — stored charge can cause serious injury. Verify the replacement capacitor MFD ratings and voltage rating match the original equipment specifications before installation. Observe local electrical codes and the equipment manufacturer's wiring diagram when making terminal connections.