Powerswitch® Mechanically interlocked safety disconnect switch. With locking receptacle bracket. Drill points and ample space provided for bottom or top conduit entry. Stainless steel cover screws wont fall out when cover is open. Impact resistant, non-conductive Valox® thermoplastic housing and handle. Housing material has UL94 V-0 self-extinguishing flammability rating. Interlock mechanism prevents receptacle from being energized when handle is down, constrains plug when up.