Crouse-Hinds series Arktite NBR interlocked receptacles with enclosed circuit breakers are used to supply power and provide short circuit protection, thermal overload protection and a disconnect means for portable electrical equipment such as motor generator sets, compressors and conveyors. Applicable for use in locations where corrosion is present such as offshore and marine locations, pulp and paper mills, and chemical plants. Crouse-Hinds series Arktite NSR interlocked receptacles with disconnect switches are used to provide a power disconnect for fixed or portable electrical equipment such as welders, generators and compressors where the switch will be subject to frequent operation. NSRs are also used to provide short circuit protection when a fusible switch is needed. They are applicable for use in non-hazardous areas where corrosion, dust, hose down and moisture may be a problem.