AS 1029.1-1985

Applies to low voltage a.c. and d.c. contactors for industrial use, intended for opening and closing electrical circuits by means of electrical contacts which are electromechanically operated. Covers classification, characteristics, markings, conditions for operation in service, conditions for construction, tests, information to be supplied by the purchaser, and the method of identification of terminals according to circuit functions.

This standard applies t o electromechanical type contactors for industrial use, intended for closing and opening electric circuits and, where combined with suitable relays, for protecting these circuits against operating overloads.It applies only to contactors, the main contacts of which are intended to be connected to circuits where the voltage does not exceed 1000 V a.c. or 1200 V d.c.The standard also applies to the electromechanical part of hybrid semiconductor (solid state) contactors which comply with AS 1029, Part 2 for voltages up to and including 1000 V a.c. and 1500 V d.c. There may be arduous service conditions which are not represented by the test requirements of this standard and the use of electromechanical contactors for such purposes shall be subject to the manufacturer's recommendations (see the Note 1 to Clause 4.3.7).NOTES:1. For electromechanical contactors with a rated voltage exceeding 1000 V a.c., see AS 1864.2. Contactors which are intended to provide short-circuit protection must additionally satisfy the relevant conditions specified for circuit-breakers (see AS 1930, AS 2184 and AS 3111).3. Where contactors are used in motor starters, reference should also be made to AS 1202.4. Information to be supplied by the purchaser is listed in Appendix A.

Under Revision See DR 94015