Tekst fra IEC om Low-voltage switchgear and controlgear
To prepare international standards for low-voltage switchgear and controlgear equipment for industrial and commercial use rated below or equal to 1 kV a.c. and 1,5 kV d.c., except that for traction purposes the limit is 3 kV d.c..
The scope includes open and enclosed separate equipment as well as combinations of equipment into complete functional units, electromechanical as well as semiconductor (solid state) equipment.
Group Safety Function
Connecting devices, either as separate entities or as integral parts of an end product for connecting external electrical supply conductors, for use with conductor cross-sections above 35 mm2 up to and including 300 mm2.