Rectorseal M12225 Round Run Capacitor 50 Mfd 370V

Product Description

The RECTORSEAL M12225 is a round run capacitor rated at 50 microfarads (MFD) and 370 volts, designed to support single-phase motor operation in HVAC equipment. Run capacitors maintain a continuous phase shift to keep motors running efficiently after startup. This capacitor is sized for compressors, fan motors, and blower motors found in residential and light commercial air conditioning and heat pump systems. Installation is typically performed by a licensed HVAC technician as part of a component-level service call or system repair.

This capacitor suits single-phase compressor and condenser fan motor circuits operating at 370 volts. At 50 MFD, it falls within the range commonly used for compressor run applications in residential split systems and packaged units. The round form factor is widely used in the HVAC trade and fits standard capacitor brackets and retention clips. Techs often replace run capacitors during seasonal tune-ups or when a motor exhibits slow startup, humming, or hard-start behavior.

Key Features

• 50 MFD capacitance for continuous motor run support
• 370-volt rating suitable for standard residential HVAC circuits
• Round form factor fits common capacitor mounting hardware
• Compact dimensions allow fitment in tight electrical compartments
• Single-section design simplifies direct replacement on compatible motors

Compatibility

Designed as an OEM-style replacement run capacitor for single-phase compressor and fan motor circuits rated at 50 MFD and 370 volts in residential and light commercial HVAC equipment.

Installation Notes

Run capacitor replacement is performed by a licensed HVAC technician. Always disconnect and lock out power at the disconnect box before opening the electrical compartment, and discharge the capacitor fully before handling — a charged capacitor can deliver a dangerous shock even with power off. Follow local electrical codes and the equipment manufacturer's wiring diagram when connecting terminals. Do not substitute a capacitor with a different MFD rating without confirming motor specifications.

Technical Specifications

• Capacitance: 50 MFD
• Voltage Rating: 370 volts
• Shape: Round
• Width: 2.0 inches
• Length: 2.0 inches
• Height: 4.25 inches
• UPC: 685744122258

Standard Information

• Brand: RECTORSEAL
• Manufacturer Part Number: M12225