Low-voltage switchgear and controlgear - Contactors and motor-starters. Electromechanical contactors and motor-starters
Low-voltage switchgear and controlgear - Contactors and motor-starters. Electromechanical contactors and motor-starters
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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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