IEC 62271-100 Ed. 2.1 b:2012

High-voltage switchgear and controlgear - Part 100: Alternating current circuit-breakers

IEC 62271-100:2008+A1:2012 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. This second edition cancels and replaces the first edition published in 2001 and its amendments 1 (2002) and 2  (2006). It also cancels and replaces IEC 61633 and IEC 62271-308.  The main changes with respect to the previous edition are listed  below:
 - the introduction of harmonised (IEC and IEEE) TRV waveshapes for rated voltages of 100 kV and above (amendment 1 to the first  edition);
 - the introduction of cable and line systems with their associated TRVs for rated voltages below 100 kV (amendment 2 to the first  edition);
 - the inclusion of IEC 61633 and IEC 62271-308.
  This consolidated version consists of the second edition (2008)  and its amendment 1 (2012). Therefore, no need to order amendment in addition to this publication.   

This publication is to be read in conjunction with IEC 62271-1:2007.