This standard applies to the types of equipment listed in Subclauses 1.1.1 and 1.1.2 hereinafter whose main contacts are intended to be connected to circuits the rated voltage of which does not exceed 1 000 V a.c. or1 500 V d.c.Starters and/or contactors dealt with in this standard are not normally designed to interrupt short-circuit currents. Therefore, suitable short-circuit protection (see Sub-clause 8.3.4) shall form part of the installation but not necessarily of the contactor or the starter.In this context, this standard gives requirements for:- contactors associated with overload and/or short-circuit protective devices;- starters associated with separate short-circuit protective devices and/or with separate short-circuit and integrated overload protective devices;- contactors or starters combined, under specified conditions, with their own short-circuit protective devices. Such combinations, e.g. combination starters (see Sub-clause 2.2.7) or protected starters (see Sub-clause 2.2.8) are rated as units.Circuit-breakers and fuse-combination units used as short-circuit protective devices in combination starters and in protected starters shall comply with the requirements of IEC Publications 947-2 and 947-3, as the case may be.

Amendment 1 to AS 3947.4.1-1995 see DR 95202. Under Revision see DR 01052 AS 3947.4.1 first published in part as AS C165-1961.AS C63 first published 1965.AS C364 first published 1967.AS C381 first published 1967.AS C63-1965 revised and redesignated AS 1029-1971.AS C165-1961 revised and redesignated AS 1023.2-1972.AS C364-1967 revised and redesignated AS 1202.1-1972.Second edition AS 1029-1974.AS C381-1967 revised and redesignated AS 1202.2-1976, AS 1202.3-1976 and AS 1202.4-1976.Second edition AS 1202.1-1981.AS 1029-1974 revised and redesignated in part as AS 1029.1-1982.Second edition AS 1029.1-1985.Second edition AS 1023.2-1989.AS 1023.2-1989, AS 1029.1-1985, AS 1201.1-1981, AS 1202.2-1976, AS 1202.3-1976 and AS 1202.4-1976 revised, amalgamated and redesignated AS 3947.4.1-1995. AS 3947.4.1 first published in part as AS C165-1961. AS C63 first published 1965. AS C364 first published 1967. AS C381 first published 1967. AS C63-1965 revised and redesignated AS 1029-1971. AS C165-1961 revised and redesignated AS 1023.2-1972. AS C364-1967 revised and redesignated AS 1202.1-1972. Second edition AS 1029-1974. AS C381-1967 revised and redesignated AS 1202.2-1976, AS 1202.3-1976 and AS 1202.4-1976. Second edition AS 1202.1-1981. AS 1029-1974 revised and redesignated in part as AS 1029.1-1982. Second edition AS 1029.1-1985. Second edition AS 1023.2-1989. AS 1023.2-1989, AS 1029.1-1985, AS 1201.1-1981, AS 1202.2-1976, AS 1202.3-1976 and AS 1202.4-1976 revised, amalgamated and redesignated AS 3947.4.1-1995.