Mars 12799 Dual Run Capacitor 55/10 MFD 440V Round HVAC

The Mars 12799 is a dual-section round motor run capacitor rated at 55/10 MFD (microfarads) at 440 volts, designed for use in single-phase HVAC systems including air conditioners, heat pumps, and condenser units. It houses two capacitors in one compact round body, allowing it to simultaneously support both the compressor and condenser fan motor.

Key Features:

• Dual capacitance: 55 MFD (compressor) + 10 MFD (fan motor) in a single unit
• Voltage rating: 440V / 370V AC compatible
• Round case design for easy installation and replacement
• Frequency: 50/60 Hz
• Temperature range: -40°C to +70°C (-40°F to +158°F)
• Operational life: 60,000 hours
• Case height: 3.125 in. | Overall height: 3.625 in. | Width: 2 in.
• Pressure-sensitive interrupter for safe fault protection
• UL Recognized — meets national safety standards for HVAC components

The Mars 12799 is a high-quality replacement run capacitor built to OEM specifications. MFD (Microfarad) is a measurement of the capacitor's electrical capacity. Run capacitors continuously improve motor efficiency and running torque, while also providing the phase shift needed for smooth single-phase motor operation. This capacitor is a direct replacement for many residential and light commercial HVAC systems.