Killark® VersaMate® VSQ series of switched and interlocked receptacles provides for a receptacle solution in hazardous location areas. NEMA 4X weather ingress ratings allow for indoor and outdoor use, and copper free aluminum construction with electrostatically applied polyester/epoxy coating ensure the ultimate in corrosive resistance. Plug interlock mechanism for dead front construction, ensuring that the switch cannot be turned on without a fully inserted plug (plug cannot be removed with switch in "on" position, preventing possibly damaging arcs and sparks).