ACCESSORY DEVICE FOR LOW OR MEDIUM VOLTAGE ELECTRIC EQUIPMENT

The invention relates to an accessory device assembly for low or medium voltage electric applications. The accessory device comprises a casing and electronic means including one or more current sensors configured to detect a current flowing in an electric cable. The top shell of the casing comprises an external recess having a cable seat for accommodating said electric cable in a transversal position with respect to said casing. The cable seat has a cable coupling surface adapted to mechanically couple with the electrical cable. The accessory device comprises a holder element mechanically coupleable with said top shell in said external recess. The holder element comprises one or more holding surfaces. Each of said holding surfaces is overlapped and mechanically coupled with said electric cable, when said holder element is positioned in said external recess in a corresponding accommodating position that is selectable depending on the size of said electric cable. Each of said holding surfaces, when overlapped and coupled with said electric cable, cooperates with said cable coupling surface to hold said electric cable in a given position with respect to said current sensors.