Mars 12942 Dual Run Capacitor 85/7.5 Mfd 440V Ac Round

Product Description

The MARS 12942 is a dual-rated motor run capacitor designed for continuous-duty operation in permanent split capacitor (PSC) motor circuits found in HVAC systems. Rated at 85 and 7.5 microfarads (MFD) with a 440V AC voltage rating, it supports simultaneous operation of a compressor circuit and a fan motor circuit from a single round unit. The round aluminum canister houses metallized polypropylene film construction, making it resistant to thermal stress, high electrical loads, and mechanical vibration. Licensed HVAC technicians and refrigeration mechanics install this capacitor as a direct replacement in systems requiring a dual capacitance solution.

The MARS 12942 is suited for residential and light commercial HVAC applications including air conditioning condensers, heat pumps, and ventilation units that use PSC motors requiring dual motor support. Its round form factor and standard dual-capacitance ratings make it a common service replacement across a wide range of split-system and packaged equipment. The 50/60 Hz frequency rating supports use in both standard North American and international voltage environments where applicable.

Key Features

• Dual capacitance rating of 85 MFD and 7.5 MFD in a single unit
• 440V AC voltage rating for high-load HVAC motor circuits
• Round aluminum canister housing with metallized polypropylene film construction
• Rated for 50/60 Hz frequency operation
• Supports simultaneous compressor and fan motor circuits
• Built for long-duty cycle and continuous-run applications

Compatibility

Designed as an OEM-style replacement dual run capacitor for residential and light commercial HVAC systems using PSC motors that require an 85/7.5 MFD, 440V AC dual capacitor in a round form factor.

Installation Notes

Installation should be performed by a licensed HVAC technician. Always disconnect and lock out power to the unit before servicing capacitors, and discharge the existing capacitor fully before handling, as capacitors store lethal voltage even after power is removed. Verify that the MFD ratings, voltage rating, and physical dimensions match the original capacitor before installation. Follow all applicable national and local electrical codes during replacement.