SEF POWER

SEF Power and CNB Electronique support you for original equipment or retrofit projects for railway players (CAF, Alstom, SNCF, Eurotunnel, etc.).
 
The power range starts at 20W and extends to 3000W.
 
Our design and production office teams are located in the same building in France to make our products as reliable as possible and maintain knowledge of the processes for more than 20 years.
 
We control the entire study chain (hardware and software design, electronic CAD, mechanical CAD, prototype qualification, retrofit) as well as production (CMS, through-hole, integration, final test).
 
We also offer retrofit services for all types of electronic equipment thanks to our reverse engineering skills to maintain sustainable supply solutions.