EUCHNER – More than safety.
EUCHNER – More than safety.
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Transponder-coded safety switches according to ATEX directive


In potentially explosive atmospheres, according to the ATEX directive and the corresponding standards, special requirements are placed on the equipment used from which an ignition hazard can emanate. Transponder-coded safety switches are ATEX devices according to categories 3D/3G and can be used in hazardous zones 2 and 22 (gases or dusts). For explosion protection, safety switches are available as interlocking devices without guard locking or with monitored guard locking. The transponder-coded actuators have unique coding. The actuators must be taught-in by the integrated evaluation electronics for unicode version safety switches. It is possible to switch the safety outputs only using the actuator already taught-in. As such, the unicode principle provides a high level of protection against tampering on bypassing safeguards.


  • Suitable for use in zones 2 and 22 (gases and dusts)
  • Compact design
  • Integrated evaluation electronics
  • With door monitoring signal
  • 2 safe semiconductor outputs
  • Series connection of several switches possible
  • Maximum safety level PL e / category 4
Transponder-coded safety switches according to ATEX directive

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