Mars M17427 Contactor 40A 2 Pole 240V

Product Description

The MARS M17427 is a 2-pole contactor rated at 40 amps full load and 240 volts, designed for switching heavy electrical loads in HVAC and refrigeration equipment. It includes integrated lug-style terminations for direct wire connections without additional terminal hardware. This type of contactor is a core component in compressor circuits, condenser fan circuits, and other motor-control applications found in residential and light commercial systems. Licensed HVAC technicians typically handle installation and replacement during routine service or equipment failure diagnosis.

The M17427 fits applications where a 2-pole, 240-volt switching device is required to control compressor or motor loads up to 40 amps full load (FLA). It is suited for residential split systems, package units, and light commercial condensing units where a direct-replacement or retrofit contactor with lug terminals is needed. The included lugs simplify field wiring and reduce the need for additional compression connectors in the panel or disconnect assembly.

Key Features

• 40-amp full load amperage (FLA) rating supports compressor and motor load applications
• 2-pole configuration switches both legs of a 240-volt circuit simultaneously
• 240-volt rated for standard residential and light commercial HVAC power circuits
• Integrated lug terminals eliminate the need for separate wire connectors during installation

Compatibility

Designed as an OEM-style replacement contactor for residential and light commercial HVAC systems requiring a 2-pole, 40-amp, 240-volt switching device.

Installation Notes

Installation and replacement should be performed by a licensed HVAC technician. Always disconnect and lock out power at the disconnect box and verify zero voltage with a meter before handling any contactor terminals. Confirm that the coil voltage and load ratings of the replacement contactor match the application before wiring. Follow applicable NEC guidelines for conductor sizing and termination torque at lug connections.

Technical Specifications

• Poles: 2
• Full Load Amperage (FLA): 40 amps
• Voltage: 240 volts
• Terminal Type: Lug
• UPC: 685744174271

Standard Information

• Brand: MARS
• Manufacturer Part Number: M17427