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Overview IEC 61439-1:2011 is an international standard issued by the International Electrotechnical Commission (IEC) that establishes general rules for low-voltage switchgear and controlgear assembli…
Overview IEC 61439-1:2020 - "Low‑voltage switchgear and controlgear assemblies – Part 1: General rules" - defines the general rules, terminology, service conditions, construction and technical charac…
1 Scope This part of IEC 61439 lays down the general definitions and service conditions, construction requirements, technical characteristics and verification requirements for low-voltage switchgear…