DIN EN 61643-21 VDE 0845-3-1:2013-07
Low voltage surge protective devices
Part 21: Surge protective devices connected to telecommunications and signalling networks – Performance requirements and testing methods
(IEC 61643-21:2000 + corrigendum 2001 + A1:2008, modified + A2:2012); German version EN 61643-21:2001 + A1:2009 + A2:2013
Class/Status:
Standard,
valid
Released: 2013-07
VDE Art. No.: 0800054