ABB Furse ESP 415T1/25/TNS Surge Protector

Code: 7TCA085460R0369
  • Compact, space-saving design
  • Repeated protection in lightning-intense environments
  • Standard: IEC 61643-11

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The ESP 415T1/25/TNS is a combined Type 1 and 2 tested Surge Protective Device SPD (to BS EN 61643) for use on the main distribution board, particularly where a structural Lightning Protection System (LPS) is employed, for equipotential bonding.

For use at boundaries up to LPZ 0 to protect against flashover (typically the main distribution board location) through to LPZ 2 to protect electrical equipment from damage.

Features & Benefits

  • Enhanced protection (to IEC/BS EN 62305) offering low let-through voltage further minimizing the risk of flashover creating dangerous sparking or electric shock.
  • Pluggable module design (with anti-vibration locking clip) allows for simple replacement at end-of-life.
  • An indicator shows when the SPD protection modules require replacement.
  • Remote signal contact can indicate the protector’s status through interfacing with a building management system.


  • Use on three-phase mains supplies and power distribution systems for protection against partial direct or indirect lightning strikes.
  • ESP 415T1/25/XXX versions for use with Class I or II LPS.
  • ESP 415T1/12.5/XXX versions for use with Class III or IV LPS; or exposed overhead three-phase power lines where no LPS is fitted.
  • ESP 415T1/X/TNS versions also cover TN-C-S earthing systems.


The SPD is to be installed in the main distribution board with connecting leads of minimal length. The protector should be fused and is suitable for attachment to a 35 mm top hat DIN rail.


  • Type of Low Voltage Distribution System: TN-S
  • Suitable For: To protect systems against transient overvoltages or surges from lightning and electrical switching events
  • Nominal AC Voltage of the System (Uo): 230 V
  • Voltage Protection Level ( Up): 1.5 kV
  • Maximum Continuous Operating Voltage (Uc): 275 V
  • Temporary Overvoltage Test Value (UT): 337 V
  • Discharge Current: Nominal 25 kA / Maximum 65 kA
  • Short Circuit Withstand Icc: 50 kA
  • Rated Frequency (f): 50 / 60 Hz
  • Short-Circuit Protective Devices: ≤ 315 A
  • Arrester Class: I / II
  • Number of Protected Poles: 4
  • Connection Type: Screw Clamp
  • Auxiliary Circuit Load: 250Vac – 1A
  • Remote Indicator: Yes
  • Wire Stripping Length: 18 mm
  • CN8: 8536308000

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Title Size
ESP 415T1/25/TNS Datasheet 915 KB

Additional information

Weight 0.09 kg