Welcome to the IDEF Systèmes website !

First of all, we want to thank all our clients for their confidence. This is the proof of our professionalism and of our effectiveness. We will remain fully dedicated to offer the best service and the best products worldwide.

We must be efficient, and we must be competitive.

This year 2003 is decisive for us since our business increases strongly. We are very ambitious in the development of many markets all over the world. We will be proud to serve you in your country. 

See you soon

We have been present on the transformer protection market for over ten years now. More than 26,000 relays have been installed worldwide by transformer manufacturers, including the big names... continued

IDEF Systèmes is a company that specializes in the design, manufacture and supply of "ready-to-install" units concerning electricity, plumbing and heating distributed under the trademark PREFEL continued

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