SSH EN IEC 60947-4-2:2023

Low-voltage switchgear and controlgear - Part 4-2: Contactors and motor-starters - Semiconductor motor controllers, starters and soft-starters

Scope

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.

Related directives

Directives related to this standards.