welcome to
![groupe celduc header](https://www.celduc.com/wp-content/uploads/2021/02/CELDUC-groupe-nega-fond-transparent-1.png)
With nearly 200 full-time employees in 4 countries on 3 continents, the Groupe celduc® and its subsidiaries celduc® transfo and celduc® relais are a leading player in the global market for industrial automation, magnetic proximity sensors and power transformers. Founded in 1964 we promote French industrial expertise.
![celduc relais](https://www.celduc.com/wp-content/uploads/2021/01/logo_celduc_relais_violet_haute_def-e1610450318279.jpg)
celduc® relais is the expert of solid state relays and magnetic sensors, worldwide. Its products are "100% made in France".
![celduc transfo](https://www.celduc.com/wp-content/uploads/2021/01/logo_celduc_transfo_violet_haute_def-e1611670304940.jpg)
celduc® transfo is a specialist in the manufacture of power transformers and for special applications.