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Equipotential bonding in Ex Areas

Consistently effective equipotential bonding

It is a fact that you, as the system operator, are responsible for the availability of the system. Equipotential bonding must be consistently effective. 

In practice, however, conductive parts of the construction or cable tray system are often defined as “equipotential bonding conductors”. These do not guarantee the required safe, consistent and permanently effective electrical connection. Problems soon arise, particularly during structural alterations when, for example, conductive system parts are removed or isolated.


Systematic safety

The system solution by DEHN serves to create a ring / radially connected equipotential bonding to be mounted on cable tray systems. It ensures consistent equipotential bonding.

Conductive system parts and electrical equipment like power units, motors, field devices, sensors, etc., can be effortlessly integrated in the equipotential bonding -  protecting both people and systems.

Non-sparking equipotential bonding bars

Non-sparking - tested with lightning currents

You can use the new PAS EX equipotential bonding bars in Ex zones 1/21 and 2/22. They work in a non-sparking manner and their connections are secured against self-loosening.

Good to know:

  • The absence of ignition sparking in case of lightning current was tested in a gas atmosphere in cooperation with an external test laboratory.
  • PAS EX can also be used in applications with hydrogen.

Your advantages at a glance

  • Easy assembly, simple retrofitting
  • Clear documentation, labelling, traceability
  • Compatible with commonplace cable tray systems
  • Simple trouble shooting
  • Time-saving inspection, service and maintenance


Einsatz in Kabelbahnen
For cable tray systems

Version 1 for cable tray systems

EB clamp for cable trays and EB plate

  • Connection only with ring equipotential bonding conductor (tinned copper cable)
  • For mounting on cable trays with side perforations or on the equipotential bonding plate (PAP 1 / PAP 2)
  • EB clamp to be mounted approx. every 0.5 m
Einsatz in Gitterbahnen
For wire cable trays

Version 2 for wire cable trays

EB clamp for wire cable trays 

  • Connection only with ring equipotential bonding conductor 35 mm², Part No. 832 838 (tinned copper cable)
  • For mounting on the wire cable tray or the EB plate (PAP 1 / PAP 2)
  • EB clamp to be mounted approx. every 0.5 m



Have you got any questions? Contact us.

Technical support

Phone: +49 9181 906 1750

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