Plug, 50 Amps, NEMA Configuration 1550P, Number of Poles 3, Number of Wires 4, Voltage 250VAC 3 Phase, HP 7.5, Color Black, Industrial Grade, Material of Construction Nylon, IP Rating 20, Cord Size 0.625 to 1.310 In., Standards UL/CSA Also known as -HUBBELL WIRING DEVICEKELLEMS HBL8451C Plug,1550 NEMA
