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Hochiki ESP Short Circuit Isolator Base in Ivory or White


SKU: 8f061f83b92f Category: Brand:


This short circuit isolator base is a sensor mounting base featuring an integral short-circuit isolator which will detect and isolate short-circuits on the loop. When a short-circuit is detected during power up the unit will drop the power to the rest of the loop.

These bases are compatible with the ESP range of sensors and does not require a loop address. A remote fire LED facility is provided when a sensor is attached to the base.

Note: A fitted sensor will still be powered when this device is isolating.

Available Versions

  • YBN-R/3(SCI) – Ivory Hochiki ESP Short Circuit Isolator Base
  • YBN-R/3(WHT)-SCI – White Hochiki ESP Short Circuit Isolator Base

Key Features

  • Features integral SCI
  • Easy to fit
  • Slim profile
  • Matches standard base colours


  • Ordering codes :
    • YBN-R/3(SCI) – Ivory
    • YBN-R/3(WHT)-SCI – White
  • Protocol : ESP
  • Operating Voltage : 17 – 41 V dc (24 V dc nominal)
  • Standby Current : 60 µA
  • Current drawn by isolator during fault condition : < 4 mA
  • Maximum current consumption from remote LED : 10 mA (limited by attached sensor)
  • Maximum continuous current : 1A
  • Maximum quantity per loop : 127*1
  • Ambient temperature range : -10°C to +50°C
  • Relative humidity : 10% to 95% RH (at 40°C)
  • Colour and case material : Ivory or White ABS
  • Fixing centres : 48 mm through to 74 mm
  • Maximum wire thickness : 2.5 mm²/terminal
  • Weight : 79g


Additional information

Weight 0.2 kg

White, Ivory

Hazardous Applications

Marine Applications


Short Circuit Isolator

System Type