Applicable to a.c. circuit-breakers designed for indoor or outdoor installation and for operation at frequencies of 50 Hz and 60 Hz on systems having voltages above 1 000 V.
SANS 62271-100:2009 history
2009SANS 62271-100:2009 High-voltage switchgear and controlgear Part 100: Alternating-current circuit-breakers
2006SANS 62271-100:2006 High-voltage switchgear and controlgear Part 100: High-voltage alternating-current circuit-breakers