DIN VDE 0100-443

Low-voltage electrical installations - Part 4-44: Protection for safety - Protection against voltage disturbances and electromagnetic disturbances - Clause 443: Protection against overvoltages of atmospheric origin or due to switching (IEC 60364-4-44:2001 + A1:2003, modified); German implementation

standard by DIN Electrotechnical Standard , 06/01/2007