IEC-60947-4-2 › Low-voltage switchgear and controlgear . Part 4-2: Contactors and motor-starters . Semiconductor motor controllers, starters and soft-starters
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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.
To find similar documents by classification:
29.130.20 (Low voltage switchgear and controlgear Including switchgear and controlgear assemblies)
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Document Number
IEC 60947-4-2 Ed. 4.0 b:2020
Revision Level
EDITION 4.0
Status
Current
Publication Date
June 1, 2020
Committee Number
121A