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