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IEC 61439-1 ED4

Low-voltage switchgear and controlgear assemblies - Part 1: General rules

General information

20.99     Jul 24, 2026

CD    Aug 3, 2026

IEC

TC 121/SC 121B

International Standard

29.130.20  

Life cycle

PREVIOUSLY

PUBLISHED
IEC 61439-1:2020 ED3

PUBLISHED
IEC 61439-1:2020/COR1:2021 ED3

PUBLISHED
IEC 61439-1:2020/COR2:2023 ED3

NOW

IN_DEVELOPMENT
IEC 61439-1 ED4
20.99 WD approved for registration as CD
Jul 24, 2026