BS EN 60947-4-2:1997 Specification for low-voltage switchgear and controlgear. Contactors and motor-starters - a.c. semiconductor motor controllers and starters
Withdrawn
This standard applies to controllers and starters, which may include a series mechanical switching device, intended to be connected to circuits, the rated voltage of which does not exceed 1 000 V a.c.
BS EN 60947-4-2:1997 Specification for low-voltage switchgear and controlgear. Contactors and motor-starters - a.c. semiconductor motor controllers and starters