ABB Furse ESP 30H Surge Protector

Code: 7TCA085400R0011
  • Robust, flame-retardant ABS housing
  • Repeated protection in lightning-intense environments
  • Very high (16 A) maximum running current

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The ESP 30H is a Combined Category D, C, and B tested protector (to BS EN 61643-21) suitable for twisted pair signalling applications which require either a lower in-line resistance or an increased current than the ESP D or E Series. Also suitable for DC power applications less than 16 A. Available for working voltages of up to 6, 15, 30, 50, 110 and 180 Volts.

For use at boundaries up to LPZ 0 to protect against flashover (typically the service entrance location) through to LPZ 3 to protect sensitive electronic equipment.

Features & Benefits

  • Very low let-through voltage (enhanced protection to IEC/BS EN 62305) between all lines – Full Mode protection.
  • Full Mode design capable of handling partial lightning currents as well as allowing continual operation of protected equipment.
  • Ultra-low (< 0.05 Ω) in-line resistance allows resistance critical applications (e.g. alarm loops) to be protected.
  • Supplied ready for flat mounting on base or side.
  • Built-in DIN rail foot for simple clip-on mounting to top hat DIN rails.
  • Colour-coded terminals give a quick and easy installation check – grey for the dirty (line) end and green for clean.
  • Screen terminal enables easy connection of cable screen to earth.
  • Substantial earth stud to enable effective earthing.
  • Integral earth plate enables enhanced connection to earth via CME kit.


Connect in series with the data communication or signal line either near where it enters or leaves the building or close to the equipment being protected (e.g. within its control panel).

Either way, it must be close to the system’s earth star point. Install protectors either within an existing cabinet/cubicle or in a separate enclosure.


  • Standards: IEC 61643-21
  • Suitable For: To protect systems against transient overvoltages or surges from lightning and electrical switching events
  • Nominal AC Voltage of the System (Uo): 30 V
  • Voltage Protection Level ( Up): 43.5 V
  • Maximum Continuous Operating Voltage (Uc): 36.7 V
  • Rated Current (In): 4 A
  • Discharge Current: I (max, 8 / 20 µs) 10 kA
  • Rated Frequency (f): 130 kHz
  • Number of Protected Poles: 1
  • Connection Type: Screw Clamp
  • Serial Resistance: 0.05 Ω
  • Wire Stripping Length: 6 mm
  • CN8: 8536308000

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Title Size
ESP 30H Datasheet 863 KB

Additional information

Weight 0.09 kg