Rectorseal MARS-12029 Oval Run Capacitor 5 Mfd 440V

Product Description

The RECTORSEAL MARS-12029 is a 5 microfarad (MFD) oval run capacitor rated at 440 volts, designed for continuous-duty motor starting and running applications in HVAC systems. Run capacitors maintain the phase shift needed to keep single-phase motors operating efficiently after startup. This unit is a non-PCB type, meaning it does not contain polychlorinated biphenyls, and it features a physical interrupter that helps prevent catastrophic failure in the event of a fault. It meets the EIA-456-A test standard, rated for 60,000 hours of service life, and carries both UL and CUL listings. HVAC technicians install this capacitor as an OEM-grade replacement component.

This capacitor is suited for residential and light commercial HVAC equipment where a 5 MFD, 440-volt oval run capacitor is specified. Typical applications include condenser fan motors and compressor circuits in split-system air conditioners and heat pumps. The oval form factor fits standard capacitor mounting brackets and electrical compartments found in most outdoor condensing units. Technicians working on single-phase motor circuits will find this capacitor fits common service scenarios where the original OEM capacitor has failed or degraded in capacitance.

Key Features

• 5 MFD capacitance at 440 volts for single-phase motor run circuits
• Oval form factor fits standard condensing unit capacitor brackets
• Non-PCB construction — no polychlorinated biphenyls
• Physical interrupter provides a safer failure mode under fault conditions
• Meets EIA-456-A test standard, rated for 60,000 hours of service life
• OEM-grade quality with UL and CUL listings

Compatibility

Designed as an OEM-style replacement run capacitor for single-phase HVAC motors requiring a 5 MFD, 440-volt oval capacitor, including condenser fan motors and compressor run circuits in residential and light commercial equipment.

Installation Notes

Run capacitors must be installed by a qualified HVAC technician. Always shut off power at the disconnect and verify zero voltage with a meter before handling capacitors, as they can retain a charge after power is removed — discharge the capacitor through a resistor before servicing. Match the MFD rating exactly to the motor nameplate specification; substituting a different capacitance value can damage the motor. Follow applicable NEC guidelines and local codes when servicing electrical components inside condensing units.

Technical Specifications

• Capacitor Type: Run Capacitor
• Capacitance: 5 MFD
• Voltage Rating: 440 volts
• Shape: Oval
• PCB Content: Non-PCB
• Test Standard: EIA-456-A (60,000 hours)
• Certifications: UL, CUL

Standard Information

• Brand: RECTORSEAL
• Manufacturer Part Number: MARS-12029