ASR Nonmetallic Interlocked Receptacles prevent electrical arcing when used with fixed or portable heavy duty equipment. Available in 30 and 60 A designs, they feature an ON/OFF switch and an enclosed mechanical interlock that prevents plug removal under load. Fused and non-fused models are available, with both designs featuring self-cleaning contacts and a seamless silicone gasket that minimize the need for maintece. They are ideal for use in damp and corrosive environments.