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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BS EN IEC 60947-4-1:2019 history
0000 BS EN IEC 60947-4-1:2019(2021)
2021BS EN IEC 60947-4-1:2019 Low-voltage switchgear and controlgear - Contactors and motor-starters. Electromechanical contactors and motor-starters