Electronic and digital interlockings

Electronic interlockingAvoid system failure and operative disruptions

Signalling and control systems are the brain and nervous system of railway transportation systems. Time and again lightning strikes lead to the failure of individual components in electronic interlockings causing train delays and cancellations.

You can provide effective protection for all kinds of interlockings by implementing a comprehensive lightning protection concept which is individually adjusted to the system at hand. Guideline 819.0808 "Blitz- und Überspannungsschutz von LST Anlagen" (Lightning and surge protection of control and signalling installations) issued by the Deutsche Bahn AG also makes recommendations on this theme.


The advantages for you of a DEHN protection solution for interlockings:

  • Economically viable material and installation costs thanks to the optimum planning of the protection concept
  • Prevention of costly operational disruptions and system breakdowns caused by lightning strikes and surges
  • Comprehensive protection concept - tailored to the specific conditions in your interlockings


Product portfolio for the protection of electronic and digital interlockings

Electronic and digital interlockings 
  1. To protect the power supply 400/230 V, 50 + 16.7 Hz: DEHNventil® M TT 2P 255 FM
  2. To protect signal mast boxes and point mechanisms: DEHNguard® S275 VA FM
  3. To protect data and information technology (signal lamps, data bus, ISDN/DSL/HDSL): BLITZDUCTOR® XT
  4. Condition monitoring of up to 10 BXTs - the visual indication signals defective or pre-damaged arresters: DEHNrecord MCM XT
  5. Components for earthing electronic and digital interlockings: Earthing and equipotential bonding

► Protection of railway infrastructure