Low-voltage switchgear and controlgear - Part 4-3: Contactors and motor-starters - AC semiconductor controllers and contactors for non-motor loads

IEC 60947-4-3:1999+A1:2006+A2:2011 applies to a.c. semiconductor non-motor load controllers and contactors intended for performing electrical operations by changing the state of a.c. electric circuits between the ON-state and the OFF-state. This consolidated version of IEC 60947-4-3 consists of the first edition (1999), its amendment 1 (2006), its amendment