Rectorseal M11037 Motor Start Capacitor 400-480 Mfd 165V

Product Description

The RECTORSEAL M11037 is a round motor start capacitor rated at 400-480 microfarads (MFD) and 165 volts, designed for use in single-phase motor start applications across residential and commercial systems. Built with a phenolic composition, this capacitor provides the high-torque starting boost that compressor and fan motors require to reach operating speed. It is rated for 50/60 Hz service and handles up to 15 starts per hour, making it appropriate for equipment that cycles frequently. HVAC technicians and refrigeration service techs are the primary installers for this type of component.

The M11037 is suited for use in residential and commercial air conditioning systems as well as refrigeration equipment. Its 400-480 MFD range accommodates motors that require higher starting capacitance, typical in larger compressors and fan motors found in packaged units, condensing units, and refrigeration compressor applications. The wide MFD range and standard 165-volt rating make it a practical stocking item for technicians servicing a broad range of equipment.

Key Features

• 400-480 MFD rating provides high starting capacitance for demanding motor loads
• 165-volt operating voltage suitable for standard single-phase motor start circuits
• Phenolic composition housing for durable, non-conductive enclosure
• Rated for 50/60 Hz operation covering both standard North American and international frequency applications
• Up to 15 starts per hour supports equipment with frequent cycling demands
• Round form factor for straightforward mounting in standard capacitor brackets

Compatibility

Designed for use in residential and commercial air conditioning and refrigeration equipment requiring a motor start capacitor rated at 400-480 MFD and 165 volts with a 2-terminal round configuration.

Installation Notes

Motor start capacitors must be installed by a qualified HVAC or refrigeration technician. Disconnect and lock out all power to the unit before removing or handling any capacitor, as start capacitors can retain a dangerous charge even after power is removed — discharge the capacitor safely using an appropriate resistive discharge tool before touching terminals. Verify that the replacement MFD rating and voltage rating meet or exceed the original equipment specifications before installation. Follow all applicable NEC and local electrical code requirements when servicing motor circuits.

Technical Specifications

• Capacitor Type: Motor Start
• MFD Rating: 400-480 MFD
• Operating Voltage: 165 volts
• Frequency: 50/60 Hz
• Starts Per Hour: 15
• Max Rated Temperature: 65 degrees F equivalent rating (65 degrees C)
• Min Rated Temperature: -40 degrees C
• Shape: Round
• Terminals: 2
• Composition: Phenolic
• Recommended Use: Residential and Commercial AC and Refrigeration

Standard Information

• Brand: RECTORSEAL
• Manufacturer Part Number: M11037