SC 121B

Low-voltage switchgear and controlgear assemblies


SC 121B Scope

To prepare international standards covering assemblies which are combinations of one or more pieces of low-voltage switchgear and controlgear equipment, not exceeding 1 kV a.c. or 1,5 kV d.c. together with associated control and/or power equipment, measuring, signalling, protective, regulating equipment, etc.

Further information

SC 121B Officers