As a genuine Williams replacement part

Use the included terminal markings (L1

Industrial Build: Designed to withstand the thermal stresses of continuous duty in commercial HVACR settings

Techs should note the 53-ohm coil resistance and verify the 24VDC system compatibility to prevent premature coil failure or overheating during extended operation cycles

providing the versatility required for residential and light commercial HVACR setups

MARS 61440 Contactor 320735-701 As a genuine Williams replacementThe MARS 61440 Contactor is a professional grade 2 Pole 40 Amp Definite Purpose Contactor built for high demand residential and commercial HVACR applications. Designed with a 24V coil, this large body component features a 3 pole frame modified for 2 pole operation, providing superior structural integrity and heat dissipation. It is engineered to handle Full Load Amps (FLA) of 40 and Resistive Amps up to 50, making it a reliable choice for air