DEHN protects measuring and control systems


Easy. Safe. Robust.


The universal combined arrester protects measuring and control circuits as well as bus and telecommunication systems from damage caused by lightning and surges.

With a high lightning current discharge capacity of 3 kA (total) and low protection levels, this new generation of devices is ideally suited for the protection of terminal devices.


You need to reliably protect measuring and control as well as process automation systems in an industrial environment?

The variety of BLITZDUCTORconnect types and variants allows you to find exactly the right arrester for your requirements. A special Ex-approved range of arresters is available for intrinsically safe signal circuits.

All the features at a glance

1 Release button
Connection terminal
2 Measuring sockets
For easy maintenance
3 Fail-open failure mode
The signal remains available
4 secR technology 
Safe removal of the modules
5 Push-in connection terminals
45° inclined, up to 2.5 mm2
6 Earthing contact
35 mm DIN rail
7 Signal disconnection / protection against polarity reversal
Easy maintenance by pulling out the arrester module, turning it 180° and plugging it into the base part again
8 Remote monitoring
Thanks to optional remote signalling transmitter and receiver unit
9 LifeCheck indication
For visual status recognition

Installation is easy

Mounted in 5 steps.

  • BLITZDUCTORconnect

    Easy. Safe. Robust.

  • BLITZDUCTORconnect Installation Schritt 1
    Step 1 - Snap the arrester onto the DIN rail

    Step 1

    Snap the combined lightning current and surge arrester BLITZDUCTORconnect onto the DIN rail.

  • BLITZDUCTORconnect Installation Schritt 2
    Step 2 - Connect the incoming lines

    Step 2

    Now connect the incoming lines to the unprotected side of BLITZDUCTORconnect.

    Use the push-in terminals to directly connect the rigid lines to the arrester.

  • BLITZDUCTORconnect Installation Schritt 3
    Step 3 - Connect the lines from the system

    Step 3

    Connect the lines from the system on the protected side of BLITZDUCTORconnect. The right side is clearly marked protected.

    When connecting the flexible lines, use a slotted screwdriver to press in the grey push-in button on the arrester.

  • BLITZDUCTORconnect Installation Schritt 4
    Step 4 - Install the remote signalling transmitter and receiver unit

    Step 4

    Now install the remote signalling transmitter and receiver unit onto the DIN rail.

    Connect the 24 V power supply and break contact for the remote signalling function via the grey push-in button of the arrester.

    The reverse unit is simply clipped onto the DIN rail. Since it is a passive component, absolutely no wiring is required.

  • BLITZDUCTORconnect Installation Schritt 5
    Step 5 - Activate the remote signalling unit

    Step 5

    Switch on the power supply to activate the remote signalling unit.

    The LED on the unit lights up red. After a few seconds, it changes to green - now your system is safe and protected.

Video - Installation is easy

New: PCB base part for BLITZDUCTORconnect

The printed circuit board-based system solution for protecting measuring and control circuits is now available.

  • This saves you space because the PCB base part is soldered directly onto the circuit board.
  • Is makes maintenance easier for you because each individual base part is remotely monitored.


Practical: You can easily replace the pluggable protection modules without using tools. As with all BLITZDUCTORconnect models.


Have you got any questions? Contact us.

Technical support

Phone: +49 9181 906 1750

back to top

Cookie Settings

We use cookies so that we can offer you the best possible website experience. This includes cookies which are necessary for the operation of the website and to manage our corporate commercial objectives, as well as other cookies which are used solely for anonymous statistical purposes, for more comfortable website settings, or for the display of personalised content. You are free to decide which categories you would like to permit. Please note that depending on the settings you choose, the full functionality of the website may no longer be available. Further information can be found in our Privacy Policy.
If you have given your consent for us to set cookies, you can revoke it at any time by clicking on the “Change Cookie Setting” link in the footer of the page.

  • Show details Hide details

    These cookies are necessary to run the core functionalities of this website, e.g. security related functions. With these cookies we can also detect if you want to stay logged into your profile to provide you with fast access to our services after revisiting our website.

    Statistics & Marketing

    In order to continuously improve our website, we anonymously track data for statistical and analytical purposes. With these cookies we can , for example, track the number of visits or the impact of specific pages of our web presence and therefore optimize our content.