Rectorseal M11079 Motor Start Capacitor 340-408 Mfd 165V

Product Description

The RECTORSEAL M11079 is a round motor start capacitor rated at 340-408 microfarads (MFD) and 165 volts, designed to provide the starting torque needed to bring single-phase compressor and fan motors up to operating speed. Built with a phenolic composition and a two-terminal design, it handles both 50 Hz and 60 Hz systems. The M11079 is rated for up to 20 starts per hour and operates across a wide temperature range of -40 degrees F to 149 degrees F, making it well-suited for demanding duty cycles in both cooling and refrigeration applications. HVAC technicians and refrigeration service pros are the primary installers.

The M11079 is intended for use in residential and commercial air conditioning systems and refrigeration equipment where motor starting assistance is required. Its 165-volt rating and wide MFD tolerance band make it a practical choice for compressor motor start circuits in split systems, package units, and light commercial refrigeration. The round form factor fits standard capacitor brackets and mounting hardware commonly found in these applications.

Key Features

• 340-408 MFD rating provides a wide tolerance range for motor starting applications
• 165-volt operating voltage suitable for common single-phase motor start circuits
• Rated for 20 starts per hour to handle frequent cycling equipment
• Compatible with both 50 Hz and 60 Hz power systems
• Phenolic composition construction for durability in varied environments
• Round shape fits standard capacitor mounting brackets and clamps

Compatibility

Recommended for use in residential and commercial air conditioning and refrigeration equipment requiring motor start capacitor support on single-phase compressor and fan motor circuits.

Installation Notes

Motor start capacitors must be installed by a qualified HVAC technician or refrigeration mechanic. Disconnect and lock out all power to the unit before handling capacitors, and discharge any stored voltage from the existing capacitor before removal. Verify that the MFD rating and voltage of the replacement capacitor meet or exceed the original equipment specification. Follow applicable local electrical codes and the equipment manufacturer's service documentation during installation.

Technical Specifications

• Capacitor Type: Motor Start
• MFD Rating: 340-408 MFD
• Operating Voltage: 165 volts
• Frequency: 50/60 Hz
• Starts Per Hour: 20
• Max Operating Temperature: 65 degrees C
• Min Operating 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: M11079