Surge protective devices for telephone lines

For the protection of receiver against transient current surge conducted via telephone lines (fax, modem, etc...)
Protection is assured in both common and differential modes.


  • In-line connection on telephone line with receiver to be protected,
  • Discharge current: I max = 10 kA (8/20 wave),
  • Connection capacity: 0.5 to 2.5mm²; flexible conductor, 0.5 to 2.5mm²; rigid conductor.

These surge protective devices complies with IEC-61643-21