Rectorseal M11033 Motor Start Capacitor 161-193 Mfd 165V

Product Description

The RECTORSEAL M11033 is a round motor start capacitor rated at 161-193 microfarads (MFD) and 165 volts, designed to provide the starting torque boost that single-phase compressor and fan motors require during startup. Built with a phenolic composition, this capacitor handles the brief high-current surge at startup and then drops out of the circuit once the motor reaches operating speed. It is rated for 50/60 Hz service and supports up to 30 starts per hour, making it a reliable replacement in demanding cycling applications. Licensed HVAC technicians and refrigeration mechanics are the primary installers for this type of component.

This motor start capacitor is suited for residential and commercial air conditioning systems as well as refrigeration equipment. It is applied in single-phase motor circuits where the existing start capacitor has failed or degraded, causing hard-start or no-start conditions. The wide MFD range of 161-193 MFD allows it to cover multiple motor frame ratings within that window, reducing the need for multiple SKUs on a service vehicle. It operates across a temperature range of -40 degrees F to 149 degrees F (approximately -40 degrees C to 65 degrees C), supporting both cold-ambient refrigeration installations and high-ambient rooftop equipment.

Key Features

• 161-193 MFD rating covers a broad range of single-phase motor start requirements
• Rated at 165 volts for standard residential and light commercial motor circuits
• Phenolic construction provides durable, heat-resistant housing
• Supports up to 30 starts per hour for high-cycle applications
• Compatible with 50 Hz and 60 Hz systems
• Round form factor fits standard capacitor mounting brackets and saddles

Compatibility

Designed as an OEM-style replacement motor start capacitor for residential and commercial air conditioning and refrigeration equipment requiring a 161-193 MFD, 165-volt round start capacitor.

Installation Notes

Motor start capacitors are installed by licensed HVAC technicians or refrigeration mechanics. Always disconnect and lock out power to the unit before handling capacitors, and discharge any stored voltage from existing capacitors using an approved resistive discharge tool before removal. Verify the replacement MFD rating and voltage rating match or fall within the motor nameplate specifications before installation. Work performed on refrigeration and AC equipment must comply with applicable local codes and NEC requirements for electrical service on motor-driven loads.

Technical Specifications

• Capacitor Type: Motor Start
• MFD Rating: 161-193 MFD
• Operating Voltage: 165 volts
• Frequency: 50/60 Hz
• Shape: Round
• Terminals: 2
• Composition: Phenolic
• Max Rated Temperature: 65 degrees C
• Min Rated Temperature: -40 degrees C
• Starts Per Hour: 30
• Recommended Use: Residential and Commercial AC and Refrigeration

Standard Information

• Brand: RECTORSEAL
• Manufacturer Part Number: M11033