UNE-EN IEC 60947-4-1:2021

This document is applicable to the following equipment:

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

actuators of contactor relays and 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 a.c. or 1 500 V d.c.

This document covers also the assessment procedure for electromechanical overload protection used in safety applications: See Annex L.

This document does not apply to:

starters for d.c. motors1;

NOTE 1 The requirements for d.c. motor starters are under consideration for the next maintenance cycle.

auxiliary contacts of contactors and contacts of contactor relays. These are covered by IEC 60947-5-1;

starter used downstream to frequency drive1;

NOTE 2 Additional requirements for starter used downstream to frequency drive are under consideration for the next maintenance cycle.

short-circuit protective device integrated within starters other than MPSDs. This is covered by IEC 60947-2 and IEC 60947-3;

the use of the product within explosive atmospheres. This is covered by IEC 60079 series;

embedded software design rules1;

cyber security aspects. These are covered by IEC 62443 series.