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23/30478750 DC

BS EN IEC 61643-21. Low voltage surge protective devices - Part 21. Surge protective devices connected to telecommunications and signalling networks. Requirements and testing methods

General Information

Status : Definitive
Standard Type: Main
Document No: 23/30478750 DC
Document Year: 15
Pages: 87
  • Section Volume:
  • GBM19 Electrical Accessories & Special Equipment (GMB19)
  • ICS:
  • 29.120.50 Fuses and other overcurrent protection devices
  • 29.240.10 Substations. Surge arresters
  • 33.040.30 Switching and signalling systems

Life Cycle

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Definitive
23/30478750 DC
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