Knowledge Center

Camlin Rail – Signet & Network Rail Case Study

15th March 2023

Evidence: Since installing Signet, Network Rail have had manual/non-auto reconfiguration systems fail in the past and the cost in delay minutes can be upwards of £300k

Action: Each Signet is considered a protection device which operates when an abnormal voltage or current reading is detected. During an attempted cable theft, an overcurrent of approximately 800A was detected by Signets. This caused the Signet feeder to commence its re-configuration process and send notification alarms to Network Rail maintenance teams.


The West Coast Main Line is one of the busiest main lines in the UK, linking London with Glasgow and also with Birmingham, Liverpool and Manchester. As a key strategic railway line in the UK with key hubs for commuting passengers, Camlin Rail have installed over 1000 Signets to automatically isolate faults and reduce down time, aligned with Network Rail’s Digital Railway Strategy to ensure safety of staff and enhancing availability.