The enclosures can be used for housing intrinsically safe [I.S.] barriers XP95 or Soteria DIN-rail mounted interfaces. The IP67 rated enclosures have a frosted polycarbonate lid through which LEDs can be viewed. A multi-purpose label that features a section for use with I.S. systems is supplied. For non-I.S. systems the part referring to I.S. can simply be removed.