This part of IEC 61915 specifies root device profiles as defined by IEC 61915-1 for starters and similar equipment covered by the following product standards: - electromechanical contactors and motor-starters (IEC 60947-4-1), - AC semiconductor motor controllers and starters (IEC 60947-4-2), - AC semiconductor controllers and contactors for non-motor loads (IEC 60947-4-3), - control and protective switching devices (or equipment) (CPS) (IEC 60947-6-2), - control units for built-in thermal protection (PTC) for rotating electrical machines (IEC 60947-8).