Rectorseal M12012 Run Capacitor 17.5 Mfd 370V Oval

Product Description

The RECTORSEAL M12012 is a 17.5 microfarad (MFD), 370-volt oval run capacitor designed for use in single-phase motor circuits found in HVAC equipment. Run capacitors maintain a continuous phase shift in the start winding during motor operation, which keeps motors running smoothly and efficiently. This unit is rated at 17.5 MFD and 370 volts, making it suitable for compressors, condenser fan motors, and air handler blower motors. Licensed HVAC technicians typically handle capacitor replacement as part of routine service calls and seasonal tune-ups.

This capacitor is used in residential and light commercial HVAC applications where single-phase motors require a continuous-duty run capacitor. Common install scenarios include replacing a failed or weak capacitor in a split-system air conditioner, heat pump, or packaged unit. The oval form factor fits standard capacitor mounting brackets found in most condensing unit control sections. Capacitor failure is one of the most frequent causes of motor startup issues and reduced system efficiency.

Key Features

• 17.5 MFD capacitance rating for precise motor phase support
• 370-volt AC rating suitable for standard residential HVAC equipment
• Oval case design fits common condensing unit and air handler mounting brackets
• Compact dimensions: 2.056 inches length, 1.212 inches width, 4.25 inches height
• Continuous-duty construction for year-round operation

Compatibility

Designed as an OEM-style replacement run capacitor for single-phase HVAC motors rated at 17.5 MFD and 370 volts AC in residential and light commercial systems.

Installation Notes

Capacitor replacement should be performed by a licensed HVAC technician. Always disconnect and lock out power to the unit before handling capacitors, as they can retain a dangerous charge even after power is removed — discharge the capacitor safely using an insulated resistor before touching terminals. Verify the replacement capacitor matches the original MFD rating and voltage rating before installation. Consult local codes and the equipment manufacturer's service documentation for any additional requirements.

Technical Specifications

• Capacitance: 17.5 MFD
• Voltage Rating: 370 volts AC
• Case Style: Oval
• Length: 2.056 inches
• Width: 1.212 inches
• Height: 4.25 inches
• UPC: 685744120124

Standard Information

• Brand: RECTORSEAL
• Manufacturer Part Number: M12012