Wiring Device-Kellems Twist-Lock® Insulgrip® Locking Plug, 3-Phase Grounding Cord Mount, 480 VAC, 50 A, 3 Pole, 4 Wires, Industrial Grade, IP20 Enclosure, 3/4 to 1-1/8 in Diameter Cord, -40 to 75 deg C, Screw Terminal, Nylon, Black/White, 6.37 x 2.56 x 2.56 in