Explosionproof switchgear assemblies in type of protection ‘Restricted Breathing nR'


The explosionproof switchgear combinations are intended for use in Zone 2 explosive gas atmospheres according to IEC/EN 60079-0 and IEC/EN 60079-15. IEC/EN 60079-15 'Equipment protection by the type of protection n’ covers explosionproof equipment for the equipment protection level 'Gc’ (Zone 2).

The enclosures can be made of stainless steel (AISI 316L or 304) or stove-enamelled steel. In addition to a standard range with 16 different enclosure dimensions, stainless steel enclosures can be made to customer specifications. All the controlgear combinations that are built using the standard enclosure range are prepared for wall mounting.

A range of polyester enclosures with 4 compatible dimensions can be joined together by means of plugged flange connections using a building block system. The external openings are fitted with flanges for accommodating cable glands. If screened cables are installed, brass flanges with suitable cable glands are available for the integration of the screening in the equipotential bonding system or for connection to the protective earth conductor. In addition, the enclosures can be fitted with covers of different heights to allow the space-saving installation of higher components.

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