SRPS EN IEC 60947-4-1:2019

Low-voltage switchgear and controlgear - Part 4-1: Contactors and motor-starters - Electromechanical contactors and motor-starters

Scope

<!-- NEW! -->IEC 60947-4-1:2018 is available as <a href="https://webstore.iec.ch/publication/64066">IEC 60947-4-1:2018 RLV</a> which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.</br></br>IEC 60947-4-1:2018 is applicable to the following equipment:

- electromechanical contactors and starters including motor protective switching device (MPSD);

- actuators of contactor relays;

- contacts dedicated exclusively to the coil circuit of this contactor or this contactor relay;

- dedicated accessories (e.g. dedicated wiring, dedicated latch accessory);

intended to be connected to distribution circuits, motors circuits and other load circuits, the rated voltage of which does not exceed 1 000 V AC or 1 500 V DC. This fourth edition cancels and replaces the third edition published in 2009 and its Amendment 1:2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:

- Scope structure and exclusions

- Editorial correction of notes and hanging paragraphs

- Reference to IEC 62683-1

- Motor protective switching device (MPSD) with its requirements

- Safety aspects related to:

- General aspects;

- Limited energy circuits;

- Electronic circuits;

- Assessment procedure for electromechanical overload protection used in safety -applications (new Annex L)

- Introduction of provisions covering the impact of higher locked rotor current to achieve high efficiency class

- Mention of dedicated wiring accessories

- Pickup power measurement

- Alignment to IEC 60947-1:2007, IEC 60947-1:2007/AMD1:2010, and IEC 60947‑1:2007/AMD2:2014

- Direct current requirements for covering photovoltaic application (new Annex M)

- Load monitoring indicators (new Annex O)

- Short-circuit breaking tests of MPSD (new Annex P)

- Co-ordination under short-circuit conditions between a MPSD and another short-circuit protective device associated in the same circuit (new Annex Q).

Related directives

NOTE: If the word "harmonized" (marked in green) is not found in the field with the name of the directive, it means that the European standard is not cited in the OJEU.

National regulations and standards