Pin and Sleeve Receptacle, 100 A, 600 V Ac 3 Phase @ 50 to 400 HZ 250 V DC, 4 Poles, 3 Wires, Epoxy Powder Coated Copper Free Aluminum, 1-1/2 In;2 In Hub Size, -40 °C Operating Temperature, +107 °C Operating Temperature, Pressure Wire Terminal, #4 to #1 Awg (Building);#4 to #2 Awg (Extra Flex) Wire Size, 3.7 LB