Earth Return Device

Earthing units, or earth return units, are found on rolling stock on railways and transit systems and provide a safe and reliable means of draining current to earth through the wheels.  


This protects bearings, reducing maintenance costs and maximising vehicle availability.


The Gerken range combines our expertise in the design and manufacture of carbon brushes and brush holders into units capable of giving over 1.5 million kilometres of reliable service before maintenance is required.


Our units are fitted as standard by many of Europe’s leading rolling stock manufacturers.


As further testament to the quality of our products, they are used successfully on the highest speed rail applications in the world, including the TGV in France and the Bombardier Zefiro in China.


Our dedicated team in France can design a bespoke solution for your requirements, whether for a new project or re-engineering an existing design to improve performance.