The flameproof distribution bay is an electrical switchgear for use in underground mining distribution networks with an isolated neutral point of the supply transformer. The switchgear is an explosion-proof device and, in accordance with Polish law, can be installed in underground workings of non-methane and methane mines with levels ‘a’ and ‘b’. The autonomous design predisposes the flameproof switchgear bay to be installed in single- to multi-section switchgear systems. The following switchgear bay designs are provided for the implementation of multi-field and sectioned switchgear: feeder, feeder-drain, outflow (including line, transformer and motor) and coupling.