Rectorseal M11073 Motor Start Capacitor 850-1020 Mfd

Product Description

The RECTORSEAL M11073 is a round motor start capacitor rated at 850-1020 microfarads (MFD) and 110/125 volts, designed to provide the starting torque needed by single-phase motors in AC and refrigeration systems. Built with a phenolic composition housing, this capacitor delivers reliable short-duration starting assistance before being switched out of the circuit once the motor reaches operating speed. It is rated for both 50 Hz and 60 Hz systems and can handle up to 15 starts per hour, making it suitable for demanding duty cycles in residential and light commercial applications.

This capacitor is recommended for use in residential and commercial air conditioning and refrigeration equipment where motor start assistance is required. It is a common replacement component in compressor and fan motor circuits across a wide range of systems. HVAC technicians and refrigeration service pros typically encounter this capacitor during compressor hard-start troubleshooting, motor replacement, or capacitor failure diagnosis. The 110/125-volt operating range accommodates common single-phase low-voltage motor configurations found in this application segment.

Key Features

• 850-1020 MFD rating provides high starting torque for single-phase motor applications
• 110/125-volt operating voltage compatible with common residential and commercial motor circuits
• Phenolic composition housing for durability in service conditions
• Compatible with both 50 Hz and 60 Hz systems
• Rated for up to 15 starts per hour to support cycling applications
• Round form factor for standard capacitor mounting configurations

Compatibility

Recommended for use in residential and commercial air conditioning and refrigeration systems requiring a motor start capacitor rated at 850-1020 MFD and 110/125 volts.

Installation Notes

Motor start capacitors are installed by licensed HVAC technicians or qualified refrigeration service professionals. 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 before servicing. Two-terminal round capacitors are wired in series with the start winding and a start relay or potential relay; follow the existing wiring configuration and applicable NEC guidelines. Verify the replacement MFD range and voltage rating match or exceed the original equipment specification before installation.

Technical Specifications

• Capacitor Type: Motor Start
• MFD Rating: 850-1020 MFD
• Operating Voltage: 110/125 volts
• Frequency: 50/60 Hz
• Maximum Rated Temperature: 65 degrees F equivalent (65 degrees C)
• Minimum Rated Temperature: -40 degrees C
• Starts Per Hour: 15
• Shape: Round
• Terminals: 2
• Composition: Phenolic
• Recommended Use: Residential and Commercial AC and Refrigeration

Standard Information

• Brand: RECTORSEAL
• Manufacturer Part Number: M11073