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Intrinsic Safety Barrier, Category 3


Intrinsic Zener diodes Category 3 Safety Barrier (Zone 2)





  • Polyester IP66 box, 210 x 80 x 60mm + cable gland
  • Ex II 3G Ex ic IIC T4
  • For digital (RS-232, TTL,...) or analog signals
  • For Zone 2 applications
  • Output limitation : +10/-10V 100mA


The TSB-31.2 intrinsic safety barrier provides four independent protected lines.

This device is ideally suited to protect RS-232 communication lines. But can also be used to transmit analog and digital signals.

This device is completely passive and requires no power supply.

Example of TSB-31 usage, in Geneva :

  Additionnal ressources and information

PDF Datasheet English
PDF FP_TSB_31_a_de_262121 Deutsch
PDF FP_TSB_31_a_fr_262121 Français

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