Bsi bs en 60439 3 1991 (2010)

BRITISH STANDARD BS EN 60439-3:1991 +A2:2001 Incorporating corrigenda April 1994, December 2005 and November 2009 Specification for Low-voltage switchgear and controlgear assemblies — Part 3: 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 ICS: 29.130.20 12&23