Rectorseal M12291 Dual Run Capacitor 50/7.5 Mfd 440V

Product Description

The RECTORSEAL M12291 is a dual run capacitor rated at 50/7.5 microfarads (MFD) and 440 volts, designed for use in single-phase HVAC systems. Run capacitors provide the continuous phase-shifted current needed to keep compressor and fan motors running efficiently after startup. This round-style capacitor measures 2.5 inches in diameter and 4.375 inches in height, fitting standard capacitor mounting brackets found in residential and light commercial condensing units. Installation is performed by licensed HVAC technicians as part of routine service or component replacement.

This capacitor is suited for split-system air conditioners and heat pumps that use a single dual run capacitor to serve both the compressor and the outdoor fan motor simultaneously. The 440-volt rating provides headroom above the typical 370-volt operating environment, which can contribute to longer service life in high-ambient conditions. It is a common replacement item during seasonal tune-ups and compressor or fan motor failure diagnostics.

Key Features

• Dual run capacitor serves compressor and fan motor from a single unit
• 50/7.5 MFD dual capacitance rating for split HVAC systems
• 440-volt rating compatible with standard 370-volt and 440-volt applications
• Round form factor fits standard condensing unit capacitor brackets
• Compact dimensions: 2.5 inches diameter by 4.375 inches height

Compatibility

Designed as an OEM-style replacement dual run capacitor for residential and light commercial split-system air conditioners and heat pumps requiring a 50/7.5 MFD, 440-volt round capacitor.

Installation Notes

Dual run capacitors must be installed by a qualified HVAC technician. Always disconnect and lock out power to the condensing unit before servicing capacitors, and discharge the capacitor fully before handling — stored charge can cause serious injury even with power removed. Confirm MFD ratings and voltage rating match the equipment nameplate before installation. Follow all applicable local electrical codes and manufacturer service documentation.

Technical Specifications

• Capacitance Rating: 50/7.5 MFD
• Voltage Rating: 440 volts
• Style: Round
• Diameter: 2.5 inches
• Height: 4.375 inches
• UPC: 685744122913

Standard Information

• Brand: RECTORSEAL
• Manufacturer Part Number: M12291