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IEC 60947-4-2 Ed. 4.0 b PDF
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Low-voltage switchgear and controlgear – Part 4-2: Contactors and motor-starters – AC semiconductor motor controllers and starters
| Published by | Publication Date | Number of Pages |
| IEC | 06/26/2020 | 230 |
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IEC 60947-4-2 Ed. 4.0 b – Low-voltage switchgear and controlgear – Part 4-2: Contactors and motor-starters – AC semiconductor motor controllers and starters
IEC 60947-4-2:2020 applies to a.c. semiconductor motor controllers and starters, which may include a series mechanical switching device, intended to be connected to circuits, the rated voltage of which does not exceed1 000 V a.c. This standard characterizes a.c. semiconductor motor controllers and starters with and without bypass means.
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