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