Pin and Sleeve Receptacle Assembly, Type Feed Through, Voltage Rating 250 VAC, Current Rating 20 Ampere, Number of Poles 3, Number of Wires 2, Hub Size 3/4 Inch, Box Type Single Gang, Cover Type Spring, Mating Plug ECP-20232, NCP-20232, Enclosure Class I Group C D, Class I Div 2 Group B, Class I Zone 1 Group IIB, Class I Zone 2 Group IIB + H2, Class II Group F G, Class III, NEMA 3RX, Approval UL 894/1010/1203, Application Lighting Systems, Conveyors, Heaters, Motor-Generator Sets, Air Conditioners, Compressors, Pumps, Constructional Feature Explosionproof, Dust-Ignitionproof, Material Zinc Electroplated Chromate Epoxy Powder Coated Copper-Free Aluminum Cover, Malleable Iron Body