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Thiim AITB Loop Isolator 4-20 mA


  • 4…20 mA Loop powered isolator
  • Prevent lightning from spreading over the system
  • Working voltage up to 1000VRMS
  • Transient overvoltage up to 8000Vpeak
  • Excellent linearity
  • Small outlines, 17.5 mm wide


The loop isolator is designed to separate one 4…20mA loop into two galvanically separated 4…20mA loops in order to prevent signal distortion and instrumentation damages due to electrical noise, voltage spikes and ground loop currents. The insulation is based on a high performance linear optocoupler with an excellent linearity and a low coupling capacitance.

For use in instrumentation with current loop I/O as used by PLCs, sensors, recorders, indicators, alarm units etc.

  • 4…20mA Max. input 100mA
  • Loop supplied Voltage drop, Max. 7V
Performance Parameters
  • Response time < 10msec.
  • Precision Class 0.5 according to DIN / EN60688
  • Linearity < 0.02%
  • Temp. dependence ±0.02% / °C
  • Supply dependence ±0.01% / %
  • DU
  • Loop supplied Loop voltage, 8…32V
  • 4…20 mA Max. voltage, 36V
  • Max. load 600Ω. @ 20V Loop voltage

Additional Information

Manufacturer Thiim


Product Name / Options Price (ex VAT)
Thiim AITB-A1C Loop Isolator - 33704 Call for Prices