This International Standard is 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.
It is only applicable to three-pole circuit-breakers for use in three-phase systems and single-pole circuit-breakers for use in single-phase systems. Two-pole circuit-breakers for use in single-phase systems and application at frequencies lower than 50 Hz are subject to agreement between manufacturer and user.
SANS 62271-100:2006 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