PRD Series 16, 32, 80 and 125 Amp Plugs and Sockets are designed for hazardous areas where weatherproof and robust equipment is required. These flameproof plugs and sockets are certified for hazardous areas Zones 1, 2, 21 and 22. The PRD provides safe, reliable power for portable or stationary electrical equipment such as lighting and heating systems, conveyors, motor starters, air‑conditioning appliances, compressors and pumps.