Flameproof Ex d interlocked panel receptacles BARTEC CPSCP../FSQCP.. series are designed to be installed in industrial plants, where potential hazardous atmos-pheres occur.These areas are either classified as zone 1 and 2 or as zone 21 and 22.The sockets and plugs of this series composed of a body and a cover made of copper-free aluminium alloy. Externally painted with epoxy powder.The sockets have a disconnecting switch that can only be operated when the plug has been fully inserted.Plugging is possible only when the disconnecting switch is opened. A closing plug in copper-free aluminium alloy, with an anti-lost chain, closes the socket seat when the plug is not inserted.