Proposes the adoption of IEC 60898-1:2003 as a revision of AS/NZS 4898:1997. Contains essential safety and associated requirements for 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 125A and a rated short-circuit capacity not exceeding 25,000 A. Annex ZZ lists variations for Australian and New Zealand conditions.