This part of IEC 60898 applies to a.c. air-break circuit-breakers for operation at 50 Hz, 60 Hz or 50/60 Hz, having a rated voltage not exceeding 440 V (between phases), a rated current not exceeding 1 25 A and a rated short-circuit capacity not exceeding 25 000 A.
As far as possible, it is in line with the requirements contained in IEC 60947-2.
