ABB Furse ESP 240CDT2/40/TT Compact Surge Protector

Code: 7TCA085460R0423
  • Pluggable module design allows for simple replacement at end-of-life
  • Repeated protection in lightning-intense environments
  • Mounting Indoor, 35 mm top hat DIN rail

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The ESP 240CDT2/40/TT is a Type 2 /Class II tested compact Surge Protective Device SPD(to BS EN/IEC 61643) for use on the sub-distribution board.

For use at boundaries up to LPZ 1 through to LPZ 2 to protect electrical equipment from damage.

Features & Benefits

  • Ultra-compact, space-saving design to fit within distribution panel boards and Electric Vehicle EV charging stations.
  • 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.
  • Innovative locking DIN rail clip allows easy SPD positioning then securing.


  • Use on single-phase mains supplies and power distribution systems for protection against indirect lightning strikes.
  • ESP 240CDT2/40/TNS and ESP 240CDT2/40/TT versions also cover TN-C-S earthing systems.


The SPD is to be installed in the sub-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.


  • Nominal voltage – Phase-Neutral Uo (RMS) 240 V
  • Maximum voltage – Phase-Neutral Uc (RMS) 275 V
  • Temporary Overvoltage TOV U (5s/120m) T 335 V / 440 V
  • Short circuit withstand capability ISCCR 25 kARMS / 50 Hz
  • Frequency range 47-63 Hz
  • Max. backup fuse (see installation instructions) ≤ 100 A
  • Leakage current (to earth) ≤ 5 μA
  • Volt free contact:(2) Screw terminal
  • Current rating 0.5 A
  • Nominal voltage (RMS) 250 V
  • Temperature range -40 to +80 °C
  • Connection type Screw terminal – maximum torque 1.2 Nm
  • Conductor size (solid)(5) 10 mm2 (L/N), 35 mm2 (PE)
  • Earth connection Screw terminal – maximum torque 2.0 Nm
  • Degree of protection (IEC 60529) IP20
  • Volt-free contact Screw connection for conductor up to 1.5 mm2, rated AC 250 V, 0.5 A, 0.4 Nm Screw Torque
  • Case material Polybutylene terephthalate (PBT)
  • Weight 0.35 kg 0.31 kg
  • Dimensions to DIN 43880 – HxDxW(4) 90.2 mm x 70 mm x 18 mm* (1TE)

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Title Size
ESP 240CDT2/40/TT Datasheet 391 KB

Additional information

Weight 0.09 kg