Rectorseal m12783 Dual Run Capacitor 35/5 Mfd 440V

Product Description

The RECTORSEAL m12783 is a dual-section round motor run capacitor rated at 35/5 microfarads (MFD) and 440 volts AC, designed for AC motor applications in HVAC systems. The capacitor features an aluminum case in a compact round form factor measuring 2 inches in diameter by 3.625 inches in length. It operates on both 50 Hz and 60 Hz power supplies, making it suitable for a wide range of residential and light commercial equipment. HVAC technicians install this type of component to maintain proper phase relationship in single-phase PSC motors, supporting both the compressor and the condenser fan motor from a single unit.

This dual-section capacitor is used in split-system air conditioners, heat pumps, and package units where a single round capacitor serves both the compressor motor and the outdoor fan motor simultaneously. Its compact round aluminum housing fits standard capacitor mounting brackets used in most condensing units. The 440V rating provides adequate headroom for typical residential and light commercial 240-volt single-phase systems and allows use in applications where line voltage fluctuation is a concern.

Key Features

• Dual-section design: 35 MFD and 5 MFD in a single round housing, eliminating the need for two separate capacitors
• 440 VAC rating compatible with standard residential and light commercial single-phase systems
• 50/60 Hz operation for broad application compatibility
• Aluminum case construction provides durable, corrosion-resistant housing
• Compact round form factor fits standard condensing unit capacitor brackets

Compatibility

Designed as an OEM-style replacement dual run capacitor for residential and light commercial AC motors, typically found in split-system air conditioners, heat pumps, and package units requiring a 35/5 MFD 440V round dual capacitor.

Installation Notes

Capacitor replacement is performed by qualified HVAC technicians. Always disconnect and lock out power to the unit before servicing. Capacitors store a high-voltage charge even after power is removed — discharge the capacitor using an appropriate resistor-type discharge tool before handling terminals. Verify that the replacement MFD ratings and voltage rating match the equipment nameplate before installation.