Συσκευές διακοπής και ελέγχου χαμηλής τάσης - Μέρος 5-1: Συσκευές κυκλωμάτων ελέγχου και στοιχεία μεταγωγής - Ηλεκτρομηχανικές συσκευές κυκλωμάτων ελέγχου

States the characteristics of control circuit devices, the electrical and mechanical requirements, the various duties to be performed, the significance of the rated characteristics and of the markings, the tests to verify the rated characteristics, the functional requirements to be satisfied by the control circuit devices, environmental conditions, including those of enclosed equipment, dielectric properties, terminals.