Motors and Armatures 12281 30/5 Mfd 440V Dual Run Capacitor

Product Description

The MOTORS AND ARMATURES 12281 is a dual run capacitor rated at 30/5 microfarads (MFD) and 440 volts, designed for use in split-system HVAC equipment. Dual run capacitors serve two motor loads in a single round case, supplying the start and run assistance needed by both the compressor and the condenser fan motor. The 440-volt rating provides operating margin above the standard 370-volt systems, making this unit suitable for a wide range of residential and light commercial air conditioning applications. Licensed HVAC technicians install this type of capacitor as a direct replacement when a failed unit causes hard-start conditions or compressor dropout.

This capacitor fits the typical install profile of a round-style dual run capacitor used in residential split-system air conditioners and heat pumps. The 30 MFD winding supports the compressor motor, while the 5 MFD winding supports the condenser fan motor. Its round form factor fits standard capacitor brackets and mounting hardware found in most outdoor condensing units. Techs encountering weak capacitance readings on a dual-section can replace this unit without splitting into two separate single-run capacitors.

Key Features

• Dual-section design handles both compressor and condenser fan motor loads in one unit
• 30/5 MFD rating covers the most common residential split-system capacitor value combination
• 440-volt rating provides voltage headroom for both 370-volt and 440-volt rated systems
• Round case fits standard outdoor condensing unit capacitor brackets

Compatibility

Designed as an OEM-style replacement dual run capacitor for residential and light commercial split-system air conditioners and heat pumps requiring a 30/5 MFD, 440-volt round capacitor.

Installation Notes

Capacitor replacement is performed by licensed HVAC technicians. Disconnect and lock out power to the condensing unit at the disconnect box before handling any capacitor. Capacitors retain a lethal charge even after power is removed — discharge the capacitor through a resistor before touching terminals. Verify MFD ratings and voltage rating match the equipment nameplate before installation.

Technical Specifications

• Capacitance: 30/5 MFD
• Voltage Rating: 440 volts
• Style: Round
• Type: Dual Run Capacitor

Standard Information

• Brand: MOTORS AND ARMATURES
• Manufacturer Part Number: 12281