IEC 61439-1 — Low-voltage switchgear and controlgear assemblies

Clauses of IEC 61439-1 with EB-authored summaries.

• §5.3Rated insulation voltage U_i and rated impulse withstand voltage U_imp
• §5.4Rated Diversity Factor (RDF)
• §5.5Marking of the complete device — rating plate
• §8.5.3Internal separation of an assembly — Forms 1-4
• §8.6IP degree of protection of the enclosure of an assembly