Mars mars-17435 3 Pole 40 Amp 24V Definite Purpose Contactor

Product Description

The MARS mars-17435 is a definite purpose contactor rated for 3-pole switching at 40 amps and a 24-volt coil. It is designed for load control in refrigeration, air conditioning, and electric heating systems where a reliable, cost-effective switching solution is required. The contactor carries UL and CUL approval, meeting standard safety requirements for commercial and residential electrical installations. Licensed HVAC technicians and refrigeration service pros are the primary installers. With a resistive rating of 50 amps, it handles inrush and resistive heating loads without derating the contacts under normal service conditions.

This contactor is suited for residential and light commercial HVAC and refrigeration applications including condensing units, air handlers with electric heat strips, and refrigeration compressor circuits. The universal mounting base is designed to replace most contactor brands in the field, reducing the number of stocked SKUs needed on a service truck. Power connections support screw terminals with quick connects or lug terminals with quick connects depending on the style selected, giving installers flexibility when wiring in tight electrical enclosures.

Key Features

• 3-pole definite purpose design rated at 40 amps for air conditioning, refrigeration, and electric heating circuits
• 24-volt coil voltage compatible with standard low-voltage HVAC control circuits
• 50-amp resistive rating provides headroom for resistive heating load applications
• UL and CUL listed for compliance with North American safety standards
• Universal mounting base allows direct replacement of most competitive contactor brands
• Dual connection options: screw terminals with quick connects or lug terminals with quick connects

Compatibility

Designed as a universal OEM-style replacement definite purpose contactor for use in residential and light commercial air conditioning, refrigeration, and electric heating systems. The universal mounting base is intended to replace most contactor brands without system modification.

Installation Notes

Installation should be performed by a licensed HVAC technician or electrician. Disconnect and lock out all power to the unit before removing the existing contactor or making any wiring connections, following NEC lockout/tagout requirements. Verify coil voltage and pole configuration match the existing circuit before installing. Inspect line and load terminals for signs of arcing or heat damage and replace any damaged wiring before energizing the circuit.

Technical Specifications

• Type: Definite Purpose Contactor
• Number of Poles: 3
• Current Rating: 40 amps
• Resistive Amp Rating: 50 amps
• Coil Voltage: 24 volts
• Approvals: UL, CUL

Standard Information

• Brand: MARS
• Manufacturer Part Number: mars-17435