Rectorseal M11005 Motor Start Capacitor 36-43 Mfd 110/125V

Product Description

The RECTORSEAL M11005 is a motor start capacitor rated at 36-43 microfarads (MFD) and 110/125 volts, designed to provide the starting torque needed to bring single-phase AC motors up to operating speed. Built in a round phenolic housing, this capacitor handles up to 120 starts per hour and operates across a temperature range of -40 degrees F to 149 degrees F (approximately -40 to 65 degrees C). It is a standard two-terminal unit compatible with 50/60 Hz systems. HVAC technicians and refrigeration service techs install this component during routine capacitor replacement or motor diagnosis on residential and light commercial equipment.

The M11005 is suited for motor start applications in residential and commercial air conditioning systems and refrigeration equipment. It is typically found in condenser fan motors and compressor start circuits where a temporary capacitance boost is required during motor startup. The 110/125-volt rating makes it appropriate for standard single-phase circuits common in residential and small commercial installations. Service technicians replacing failed or weak start capacitors on AC condensing units and refrigeration systems will find this unit a practical drop-in solution.

Key Features

• 36-43 MFD capacitance range suitable for motor start applications
• Rated for 110/125-volt single-phase circuits
• Supports up to 120 starts per hour for high-cycle demand
• Phenolic construction provides durable, heat-resistant housing
• Round shape with two terminals for straightforward installation
• Compatible with 50/60 Hz systems for broad application coverage

Compatibility

Designed for motor start applications in residential and commercial AC and refrigeration systems requiring a 36-43 MFD, 110/125-volt two-terminal start capacitor.

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, and discharge the existing capacitor fully before removal, as stored charge can remain after shutdown. Verify that the replacement MFD rating and voltage rating match the motor nameplate specifications before installation. Follow applicable NEC guidelines for electrical service work on HVAC and refrigeration equipment.

Technical Specifications

• Capacitor Type: Motor Start
• MFD Rating: 36-43 MFD
• Operating Voltage: 110/125 volts
• Frequency: 50/60 Hz
• Max Rated Temperature: 65 degrees C
• Min Rated Temperature: -40 degrees C
• Starts Per Hour: 120
• Shape: Round
• Terminals: 2
• Composition: Phenolic
• Recommended Use: Residential and Commercial AC and Refrigeration

Standard Information

• Brand: RECTORSEAL
• Manufacturer Part Number: M11005