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Comitronic-BTI ZRX8 Dual Channel Zener barrier in ATEX Zone 2/22


  • Cycle before dangerous failure: B10d = 2,000,000 at 2A
  • Risk duration: 10 ms max
  • Cable severing protection: yes (opening of safety lines)
  • Short-circuit protection and overload protection: yes (system shutdown). Requires return to a service workshop for a total control and troubleshooting.
  • Safety contacts: 2 x NO 8A/250V + 2 x NF 8A/250V
  • Diagnostics: 1x NO 400mA/60V max
  • Indicators: 3 LEDs
  • Reset: automatic
  • Mounting: symmetrical DIN 35mm rail on DIN 50022
  • Mounting: IP 54 electrical box
  • Electrical connection: Maximum 14 AWG (2.08 mm²) / 250V minimum
  • Temperature: -25°C to +70°C.


The ZRX8 intrinsic safety barrier is used to isolate 2 independent electrical information to move beyond a ATEX zone 2 or 22 outer the area. It meets the essential requirements for the Guideline 94/9/EC and for which a declaration of conformity is available. It provides 2 NO safety outputs and 2 NC safety outputs with 8A/250V switching power, and is well suited to magnetic switches RDX8. Compact 22.5 mm format Suitable for RDX8 or other sensor Removable terminals
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