IEC 60947-4-2:2020 ED4

Low-voltage switchgear and controlgear – Part 4-2: Contactors and motor-starters – Semiconductor motor controllers, starters and soft-starters IEC 60947-4-2:2020 ED4

Publication date:   Jun 26, 2020

General information

60.60 Standard published   Jun 26, 2020


TC 121/SC 121A

International Standard

29.130.20   Low voltage switchgear and controlgear



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IEC 60947-4-2:2020 applies to semiconductor motor controllers, starters and soft-starters which can include a series mechanical switching device, intended to be connected to circuits the rated voltage of which does not exceed 1 000 V AC.
This fourth edition cancels and replaces the third edition published in 2011. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
- scope exclusions;
- editorial correction of notes and hanging paragraphs;
- reference to IEC 62683-1;
- safety aspects related to:
- general aspects;
- limited energy circuits;
- electronic circuits;
- mention of dedicated wiring accessories;
- power consumption measurement;
- alignment to IEC 60947-1:2020.

Life cycle


IEC 60947-4-2:2020 ED4
60.60 Standard published
Jun 26, 2020


IEC 60947-4-2/AMD1 ED4