2012BS EN 61439-3:2012 Low-voltage switchgear and controlgear assemblies. Distribution boards intended to be operated by ordinary persons (DBO)
1991BS EN 60439-3:1991+A2:2001 Low-voltage switchgear and controlgear assemblies - Particular requirements for low-voltage switchgear and controlgear assemblies intended to be installed in places where unskilled persons have access to their use - Distribution boards
1991BS EN 60439-3:1991 Specification for low-voltage switchgear and controlgear assemblies - Particular requirements for low-voltage switchgear and controlgear assemblies intended to be installed in places where unskilled persons have access to their use - Distribution boards
1989BS 5486-12:1989 Low-voltage switchgear and controlgear assemblies - Specification for particular requirements of type-tested miniature circuit-breaker boards