celduc-relais [ celduc relais ] - celduc? is a specialist in power techniques and electronics. With many years of experience celduc? is fully focused on serving its market and customers all over the world. The company was founded in 1960 by Michel Guichard, today it is split into two separate companies, celduc? transfo & celduc? relais to channel and focus its expertise into two separate market sectors. celduc? relais is now structured into three strategic business units and has pursued innovations, thanks to its R&D and marketing teams. These teams enable Celduc to be recognised as a well-known specialist in Solid States Relays, magnétic proxymity sensors and Reed relais & switches. celduc? relais controls the complete chain : research, development, production, and testing. celduc? relais manufactures one of the most comprehensive range of Solid State Relays but has also developed its own production equipment to ensure the most efficient manufacturing methods.