Wall-mounted interlocked sockets in aluminium alloy suitable for applications in areas at risk of explosive atmospheres as defined in ATEX Directive 2014/34/EU. Back box and cover are treated with ecological anticorrosion passivation with fluoro-zirconium and finished with hot polymerized scratch-resistant nontoxic polyester painting. The colour is RAL 9005 black. The interlock system is made of metal, and the inside isolator is an AC23A-AC3 class switch at rated current with the capacity of withstanding a short circuit 10kA. The cover is attached to the back box by means of stainless steel screws, the sealing is guaranteed by a gasket in non-ageing elastomer. Supplied with flange with insulated cable gland.