Part 4-1: Contactors and motor-starters – Electromechanical contactors and motor-starters
(IEC 121A/509/CDV:2022); German and English version prEN IEC 60947-4-1:2022 Class/Status:
Draft,
valid
Released: 2023 -02 Published:
2023-01 -27
VDE Art. No.: 1600443
End of objection deadline:
2023-03-27
This part of IEC 60947 applies to AC and DC contactors and AC motor-starters whose main contacts are intended to be connected to circuits the rated voltage of which does not exceed 1000 V a.c. or 1500 V d.c. 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 and contactors or starters combined, under specified conditions, with their own short-circuit protective devices. Such combinations, e.g. combination starters or protected starters are rated as units.
This Document is related to the following Topics (in bold):
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