Hubbell Wiring Device-Kellems industrial receptacles provide secured & waterproof connections to electrical mains in harsh environments. They feature one-piece, brass integral ground straps for low resistance against fault currents and a unique bypass contact design for reduced heat build-up and improved contact force. These UL listed & CSA certified receptacles have PBT bases that ensure excellent impact strength & dimensional stability, and are available in 1/2, 1 & 2 hp variants.