Terminal connectors with clamping-screw, 16 A, 500 V, for nominal cross-sectional areas up to 2.5 mm<(hoch)2>
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 01/01/1995

Junction inserts with mantle terminals – 16 A, 500 V, for conductors up to 2.5 mm<(hoch)2>
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 03/01/2016