Constant Voltage
Signalling Supply


For years, the ‘Voltage Stabilising Transformer Unit’ has been supplying the traction industry with a constant voltage signalling supply. The equipment was introduced to ‘British Rail’ as a solution to an engineering issue.

At that time, Brentford Electric was asked to provide a voltage stabiliser to compensate for a mains variation of 28,750V to 11,250V due to the power drawn by the trains as they passed by the signalling boxes. The equipment provided, offered the client a stable supply for a much varied source.

The composite equipment includes a step down transformer which transforms the varying 25kV to a much lower voltage potential. The transformer then feeds the voltage stabiliser which transformers the varied supply into a constant supply.

If you have any questions concerning the ‘Signalling Transformers & Voltage Stabilisers’, then please contact our ‘Sales’ department who will be happy to assist.

Contact Us

15-16 Woodbridge Meadows, Guildford, Surrey. GU1 1BJ

Phone: +44 (0)1483 568 281

Fax: +44 (0)1483 504 961