Definite Purpose Control - Contactor, 4 Poles, 40 A, 110 to 120 V ac, 50 A Resistive Load, 3 Phases, 20 hp15 kW Motor Power, 25 to 40 A Frame, Quick Connect Terminal Connection, -13 °F Operating Temperature, +158 °F Operating Temperature, DIN Rail Mount, 50 to 60 Hz, 3.75 in Overall Height, 3.38 in Overall Length, 2.68 in Overall Width, 2.2 lb