Locking Connector, Connection Orientation Straight, Current Rating 20 A, Housing Color Black, White, Housing Material Nylon, IP Rating IP20, NEMA Receptacle Configuration L16-20R, Number of Poles 3, Number of Wires 4, Phase Three, Resistance Properties Impact , Shrouded No, Voltage Rating 480V AC, Wire Connection Type Spring Clamp Terminals, Wiring Style Standard, Cap Type No Cap or Cover, Contact Material Brass, For Maximum Cable Diameter 1.15 in, For Minimum Cable Diameter 0.35 in