Blog - EXPERTISE & INNOVATIONS - Solid State Relays - A new production line serving French expertise
In an uncertain global context, this new technological entity marks a major strategic milestone. It strengthens our ability to secure our operations and to guarantee our customers a consistent level of excellence, from design through to the final product.
celduc® relais already mastered the entire value chain: study, design, manufacturing, testing, and commercialization.
Today, we are reaching a decisive milestone by integrating the missing link: the manufacturing of the core of our technology, the power semiconductor.
This full integration enables us to secure our supply chain, strengthen our industrial independence, and ensure complete traceability, from component to finished product. Concretely, this translates into better performance control, consistent quality, and increased reliability for our customers.
2- A new production line serving French expertise
The commissioning of our new hybrid manufacturing line allows us to scale up. Fully automated and equipped with state-of-the-art technologies, it ensures production that is precise, repeatable, and adaptable, from prototype to industrial volumes.
Located in our factory in France, this line embodies our commitment to a high-performing local industry. It relies on advanced integration processes and mastery of key power semiconductor technologies, enabling us to meet the requirements of the most critical applications.
This new industrial tool strengthens our ability to support ambitious projects while ensuring a high level of quality, traceability, and compliance with international standards.
3- Co-development as a response to new industrial challenges
In a market largely dominated by standardized solutions, we choose customization. Manufacturers today must meet strong constraints: reducing size, controlling costs, and limiting carbon footprint.
Our answer is based on co-development. We work closely with design offices to create tailored architectures, integrating the power function as close as possible to application needs.
This approach optimizes performance, reduces losses, and controls the overall system cost. It also results in the delivery of directly integrable, tested, and validated solutions, ready for implementation.
For more information about our Integrated power electronics solutions
With over 60 years of expertise in power electronics, we combine industrial agility with technological excellence. This new step strengthens our position as a trusted partner for the most demanding applications, in France and internationally.
“Made in France” : the phrase is everywhere. But in the electronics industry, it does not always mean the same thing.
Assembling a product locally is not enough to guarantee its quality. For a solid-state relay, where every detail matters, the reality is far more demanding: performance is not determined at the end of the chain, but at every stage of its construction.
So, what does it really mean to produce a solid-state relay in France?
A reliable solid-state relay is not just an assembly. It is the result of a precise balance between design, technological choices, industrial processes, and quality control.
Producing in France, in this context, means :
Conversely, fragmented production chains dilute responsibilities and make overall product control more complex.
What defines the quality of a solid-state relay is not always visible.
It lies in its technological core: the power semiconductor.
Mastering this critical component changes everything. It means controlling actual performance, losses, thermal behavior, and long-term robustness.
Above all, it makes it possible to move beyond imposed standards to adapt the product to its real use.
In a market dominated by generic solutions, this capability makes all the difference.
A reliable product is one for which every stage is controlled and verifiable.
Producing in France makes it possible to enforce constant requirements: full traceability, controls at every phase, testing under real conditions. Nothing is left to chance.
This industrial rigor guarantees consistency over time, far beyond initial performance claims.
Because a solid-state relay is not judged when it leaves the factory, but after thousands of ON/OFF switching cycles.
In many sectors — industry, energy, transport — failure is not an option.
Systems must be stable, reliable, and durable. They must operate without compromise, sometimes in constrained environments.
In this context, producing locally is not a marketing choice. It is an industrial response.
It is a way to align the product’s level of requirement with that of its application.
Producing in France also means shortening the distance between teams and customers.
Interactions are more direct, adjustments faster, developments more relevant.
We no longer simply supply a component: we build a solution.
This proximity opens the way to co-development, with a clear objective: optimizing the overall system performance, not just that of the product.
Globalized supply chains have shown their limits. Lead times, dependencies, variability: risks have become visible.
Mastering all our production processes means regaining control.
It means securing, strengthening reliability, and stabilizing.
It also means making a choice aligned with current challenges: reducing transport, controlling processes, and embedding production within a sustainable approach.
“Made in France” for a solid-state relay, “Made in France” should never be just a mention.
And ultimately, a single promise: products designed to last, performing where they are truly expected, and reliable where it really matters.
D‑U‑N‑S® Number : 382274546
Sales department France :
+33 (0) 4 77 53 90 20
Export sales department :
+33 (0) 4 77 53 90 21
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Gender Equality Index 2026
Based on 2025 data
Final result: 88/100 (for more information)
