Overvoltage protection device for field mounting

General Information
Mechanical Data
Electrical Data


  • Operating voltage: 24V/120V/230V
  • Compact device for the protection of signal / communication lines
  • Optionally available with intrinsically safe SIL2 approval

Fields of application

  • Process automation
  • Measurement and communication technology in the chemical, pharmaceutical, water and waste water and food industries.


The HAW569 surge protection device from Endress+Hauser is suitable for protecting the electronics of field devices against destruction by overvoltage. Overvoltages occurring in signal lines (e.g. 4...20 mA), communication lines of the field buses (HART, PA, FF) and supply lines are safely dissipated to earth. The functionality of the transmitter or the electronics to be protected remains unaffected, as there is no disturbing voltage drop due to impedance-free coupling of the protective devices.

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Valentine Godin

Great product and customer care! Reliable, fast and honest... I have recently purchased 2 pieces of equipments; their service has been spot on from start to finish, understanding my needs, providing useful advice and rapid assistance when it was required! Highly satisfied, I highly recommend their teams and would definitely work with them again in the future!

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Somya Gupta

The conversation was highly helpful to me. I want to know about the suitable sensors that can be used for level measurements for conical tank systems. Mr. Pedro has quickly responded and explained in very ease way. It was nice interacting with him.

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