Crouse-Hinds series Arktite FSQC interlocked receptacles are used to supply power to portable electrical equipment, such as hand lamps, lighting systems, power tools, conveyors and welders. Applicable in areas which are hazardous due to the presence of flammable vapors or gases and combustible dusts. Ideal for petroleum refineries, chemical and petrochemical plants, and facilities for processing and handling grain, flour and starch.