Rectorseal M12004 Run Capacitor 4 Mfd 370V Oval

Product Description

The RECTORSEAL M12004 is a 4 microfarad (MFD), 370-volt oval run capacitor designed for single-phase motor applications in HVAC equipment. Run capacitors maintain a continuous phase shift to keep PSC motors running smoothly after startup. This capacitor is rated at 370 volts and 4 MFD, making it a compact unit suited for fan motors and compressors in residential and light commercial cooling systems. Licensed HVAC technicians handle replacement of this component as part of routine service or failure diagnosis on air conditioning and heat pump systems.

This capacitor fits applications where an oval-form-factor run capacitor is required. Oval capacitors are commonly installed in tight equipment compartments where round capacitors may not seat properly. Typical install scenarios include condenser fan motor replacements, OEM capacitor substitutions during seasonal tune-ups, and field repairs following capacitor failure on split-system air conditioners and heat pumps.

Key Features

• 4 MFD capacitance rating for precision motor support
• 370-volt rating suitable for standard residential HVAC equipment
• Oval form factor fits space-constrained equipment compartments
• Compact dimensions support installation in high-density wiring areas

Compatibility

Designed as an OEM-style replacement run capacitor for residential and light commercial HVAC systems requiring a 4 MFD, 370-volt oval capacitor.

Installation Notes

Run capacitor replacement is performed by a licensed HVAC technician. Always disconnect and lock out power to the unit before accessing the capacitor, and discharge the capacitor fully before handling, as run capacitors can retain a lethal charge even after power is removed. Use insulated tools and follow NEC guidelines for low-voltage component replacement. Verify that the replacement MFD and voltage ratings match the equipment nameplate before installing.

Technical Specifications

• Capacitance: 4 MFD
• Voltage Rating: 370 volts
• Form Factor: Oval
• Length: 2.056 inches
• Width: 1.212 inches
• Height: 2.0 inches
• UPC: 685744120049

Standard Information

• Brand: RECTORSEAL
• Manufacturer Part Number: M12004