This part of IEC 60898 applies to a.c. air-break circuit-breakers for operation at 50 Hz or 60 Hz, having a rated voltage not exceeding 440 V (between phases), a rated current not exceeding 125 A and a rated short-circuit capacity not exceeding 25 000 A. This consolidated version consists of the first edition (2002), its amendment 1 (2002) and its amendment 2 (2003). Therefore, no need to order amendments in addition to this publication.