BS EN IEC 60947-4-1:2019

1   Scope This part of IEC 60947 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 document covers also the assessment procedure for electromechanical overload protection used in safety applications such as protecting a motor located in explosive atmosphere from the outside atmosphere: See Annex L. This document does not apply to:

— starters for DC motors 1 ;

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

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