DIN 43454-2
DIN 43454-2 Circuit-breaker; rated voltage 245 kV; circuit-breaker with common support frame for all poles; terminal and mounting dimensions, layout
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 02/01/1991
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 02/01/1991