C25DNY164A is Eaton Cutler-Hammer C25 series definite purpose 3-pole AC contactor, designed for HVAC, refrigeration, fan, pump and single/three-phase motor switching control. It comes with factory-installed lug terminals with hexagon set screws, standard 120VAC control coil, built-in auxiliary contact structure, compact open-frame construction for panel mounting, UL & CSA certified for frequent switching under AC-7a/AC-3 load category. Widely used in commercial air conditioning units, compressor and industrial light motor control systems.