Motors and Armatures 12105 Run Capacitor 5 Mfd 440V

Product Description

The MOTORS AND ARMATURES 12105 is a round run capacitor rated at 5 microfarads (MFD) and 440 volts, designed for continuous-duty operation in single-phase AC motor circuits. Run capacitors maintain the phase shift needed to keep a motor running efficiently after startup. This capacitor is a common replacement component in HVAC equipment, installed by licensed HVAC technicians during routine service or motor replacement work. Its round form factor suits standard capacitor mounting brackets found throughout residential and light commercial equipment.

This capacitor is typically used in condenser fan motors and compressor circuits within split-system air conditioners, heat pumps, and packaged rooftop units. The 440-volt rating provides a safety margin over standard 370-volt applications, making it a widely accepted upgrade or direct replacement in systems where either rating is specified. Technicians commonly stock this capacitor as a high-turnover service part for warm-weather AC calls.

Key Features

• 5 MFD capacitance for single-phase motor run duty
• 440-volt rating compatible with both 370V and 440V specified applications
• Round case style fits standard capacitor mounting brackets
• Continuous-duty rated for year-round operation

Compatibility

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

Installation Notes

Run capacitors must be installed by a qualified HVAC technician. Disconnect and lock out all power to the unit before removing the existing capacitor, and discharge the old capacitor fully before handling terminals. Verify the MFD rating and voltage rating against the equipment nameplate before installation. Capacitors store a lethal charge and must never be handled while energized.

Technical Specifications

• Capacitance: 5 microfarads (MFD)
• Voltage Rating: 440 volts
• Case Style: Round

Standard Information

• Brand: MOTORS AND ARMATURES
• Manufacturer Part Number: 12105