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CET-AR Safety Switch

CET-AR Safety Switch

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EUCHNER CES Category 4, Non-Contact Safety Systems are used to monitor the position of movable machine guarding by means of Inductive Coding. These systems are designed for use in areas where a high level of tamper resistance and safety is required. These systems feature an inductive read head with integral evaluation unit / safety module, and a digitally coded actuator. Unlike universally coded magnetic switches, the CES actuators are uniquely coded and cannot be bypassed by any means. The safety switch CET-AR with guard locking is based on the proven transponder principle. The CET-AR has an integrated evaluation module making it a complete package.

Can be connected to Euchner's ESM-BA series safety relays.


Packaging machines, Food processing, Medical, Elevators, Machine tools, Robotics



  • Available in Unicode and Multicode versions
  • Safety switch with guard locking and guard locking monitoring
  • Available in Mechanical locking and Electrical locking
  • Integrated evaluation module
  • Up to 20 switches wired in series
  • Sturdy die-cast housing for harsh environments
  • Status LEDís
  • High locking forces up to 5,000 N (1124 lb)


  • Achieves the highest level of safety
  • Highest protection against tampering
  • Non-contact system
    • Overcomes misalignment issues
    • Vibration resistant
  • Fault diagnostics
    • Minimizes down-time
  • Operates under extreme environmental conditions e.g. dirt, moisture, ambient temperature
  • UL Approval on the M12 connector versions


  • Two M12 connectors
  • Environmental Protection IP67 - oil and dust tight, and water resistant
  • Operating voltage 24VDC +/- 15%
  • Current consumption 80mA
  • Ambient operating temperature -20 to 55C
  • Die-cast aluminum housing
  • High locking forces up to 5,000 N (1124 lb)
  • Diagnostic LEDís
  • Reverse polarity protected, integrated bridge rectifier


Actuator Compatibility

All CET-AR safety switches are compatible with actuator CET-A-BWK-50X.

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