Mars M12816 Dual Run Capacitor 80/7.5 Mfd 440V

Product Description

The MARS M12816 is a round dual run capacitor rated at 80/7.5 microfarads (MFD) and 440 volts, designed to support both the compressor and the condenser fan motor in a single unit. Dual run capacitors reduce wiring complexity and save panel space compared to using two separate capacitors. This capacitor maintains the phase shift needed for motor starting torque and continuous run efficiency. It is a direct-replacement component used by HVAC technicians servicing residential and light commercial air conditioning and heat pump systems.

This capacitor fits into round capacitor slots in condensing units where a dual 80/7.5 MFD, 440V round-style capacitor is specified. The 440V rating makes it suitable for use on standard single-phase 208-240V equipment. It is commonly installed during seasonal tune-ups, compressor replacements, or when a failed capacitor is identified as the cause of hard-start or no-start conditions in the outdoor unit.

Key Features

• Dual capacitance rating: 80 MFD for compressor, 7.5 MFD for fan motor
• 440V AC rating provides compatibility with standard single-phase 208-240V condensing units
• Round form factor fits standard round capacitor mounts and brackets
• Single-unit design replaces two separate run capacitors, simplifying installation
• Cross-referenced to SUPCO part number CD80+7.5X440R

Compatibility

Cross-referenced to SUPCO part number CD80+7.5X440R. Designed as an OEM-style replacement dual run capacitor for residential and light commercial air conditioning and heat pump condensing units requiring an 80/7.5 MFD 440V round capacitor.

Installation Notes

Installation should be performed by a licensed HVAC technician. Disconnect and lock out all power to the condensing unit before handling any capacitor. Capacitors store a lethal electrical charge even after power is removed — always discharge the capacitor using an appropriate discharge tool or resistor before touching terminals. Verify the replacement MFD ratings and voltage rating match the original unit nameplate before energizing the system.

Technical Specifications

• Capacitance: 80/7.5 MFD
• Voltage Rating: 440 volts
• Configuration: Dual Run
• Shape: Round
• UPC: 685744128168

Standard Information

• Brand: MARS
• Manufacturer Part Number: M12816