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An image of a Wallis data line surge protection device

Designed for business and industrial applications, these products provide protection for telecoms systems against the damaging effects of transient overvoltages caused by lightning, AC power systems and other electrically “noisy” sources.

Features and Benefits

  • Low let through voltage.
  • Protects against transient overvoltages without interruption of service.
  • Negligible effect on normal line operation.
  • Various mounting methods available – Din rail, Hardwired and LSA Plus.
  • Earthing kits and enclosures for multiple modules available.
Max. Working VoltageCurrent Rating (Signal)Rated Impulse Discharge 8/20μs, Per Line (2 Wires)Minimum DC BreakoverImpulse Voltage Performance 10/700μs (125A Peak)Typical Loop ResistanceResponse TimePart Number
Max. Working Voltage190VCurrent Rating (Signal)300mARated Impulse Discharge 8/20μs, Per Line (2 Wires)10kAMinimum DC Breakover220VImpulse Voltage Performance 10/700μs (125A Peak)<265V All ModesTypical Loop Resistance9.4ΩResponse Time10nsPart NumberWSPKT1

Tested: BS EN 61643-21

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