Rectorseal M12048 Oval Run Capacitor 45 Mfd 440V

Product Description

The RECTORSEAL M12048 is a 45 microfarad (MFD), 440-volt oval run capacitor designed for use in single-phase HVAC motors. Run capacitors maintain a continuous phase shift in the motor's start winding during operation, improving efficiency and torque stability. This unit is rated at 45 MFD and 440 volts, making it suitable for compressors, condenser fan motors, and air handler blower motors where those values are specified. The oval housing measures 1.806 inches wide by 2.806 inches long by 5.25 inches tall, a compact form factor that fits most standard capacitor brackets. Licensed HVAC technicians are the primary installers of this component.

This capacitor is used in residential and light commercial HVAC systems, including central air conditioners, heat pumps, and packaged units. It is installed inside the electrical compartment of condensing units or air handlers, typically mounted to a capacitor bracket or clip. The 45 MFD 440-volt rating covers a wide range of single-phase compressor and fan motor applications. When replacing a failed run capacitor, always verify the MFD rating and voltage rating stamped on the original unit before substituting this part.

Key Features

• 45 MFD capacitance rating for single-phase motor run applications
• 440-volt AC rating provides compatibility across common residential and light commercial HVAC voltages
• Oval housing fits standard capacitor mounting brackets and clips
• Compact dimensions: 1.806 inches wide, 2.806 inches long, 5.25 inches tall
• Suitable for compressors, condenser fan motors, and blower motors rated at 45 MFD 440V

Compatibility

Designed as an OEM-style replacement run capacitor for single-phase HVAC motors requiring a 45 MFD 440-volt oval capacitor.

Installation Notes

Run capacitor replacement is performed by licensed HVAC technicians. Always shut off power at the disconnect and verify zero voltage with a meter before handling any capacitor, as capacitors retain a charge after power is removed and must be safely discharged before disconnection. Follow NEC guidelines for HVAC electrical service work. Do not substitute a capacitor with a different MFD rating than what is specified for the motor, as incorrect capacitance will shorten motor life or cause immediate failure.

Technical Specifications

• Capacitance: 45 MFD
• Voltage Rating: 440 volts
• Housing Shape: Oval
• Width: 1.806 inches
• Length: 2.806 inches
• Height: 5.25 inches
• UPC: 685744120483

Standard Information

• Brand: RECTORSEAL
• Manufacturer Part Number: M12048