Sockets with Interlock Switches - for guaranteed safety of operation, Allows closure of main switch only when the plug is fully inserted in socket - when complete mechanical & electrical connection has occurred, Plug removal is possible only when the switch is in “off” position, Wall Mounted Sockets with Interlock Switch Unika (w/o protection), Switch designed for use in AC 22A class applications, Conforms to IEC 60309-1 & IEC 60309-2, Rated operational voltage upto 415V, Rated operational current upto 32A, External impact strength: IK08, Available in IP44 / IP65 versions, Glow wire test: 750°C.