European expert in complex electrical products and systems 

Sirail’s European dimension, our know-how and our experience enable us to support all your design, development and production projects, providing you with our expertise and flexibility.

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Sirail's expertise at work for our customers

Sirail designs, produces and integrates complex electrical harnesses and electrical systems for Europe’s leading manufacturers.

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Project Management

The development and industrialisation of a complex new electrical product can sometimes be fraught with unexpected difficulties. Our team of Sirail project managers is there to anticipate any problems you may encounter and implement the appropriate countermeasures. Our project management engineers will propose innovative solutions to adapt flexibly to your project’s sometimes changing requirements and priorities.

Wiring diagrams
2D & 3D drawing
Work sequences
Test procedure
Qualification process
ISO-9001 Certification
IRIS Certification
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An engineering team will listen to your requirements in order to provide the best solutions to all your technical challenges in electrical and electromechanical systems, even in the most demanding environments.
We can provide all the document types that are necessary for you: electrical diagrams, 3D and 2D drawings of any mechanical part, mounting procedures, qualification and test instructions or any other document needed.
The design process follows the best standards in the industry and is also certified ISO9001, IRIS.…

Electrical diagrams
2D and 3D drawings
Work ranges
Qualification procedures
Test procedures
ISO-9001 Certification
IRIS Certification
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The major European players recognise Sirail’s expertise. Sirail’s teams are capable of producing the most complex and technical products, from prototype to series production, in a highly demanding economic context. Sirail offers an optimised combination of best cost sites and proximity sites, proposing one option or the other depending on the project, the size of the products, their transportability, and the size of the series.

Optimized costs
6 production sites
"Best Costs" sites
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On-site service

Our teams can interven directly on our partners’ production lines for the integration or implementation of modifications to the electrical systems which have been pre-assembled in our production sites.

Our intervention teams are located on Sirail production sites, in 5 countries and 6 factories. They can operate anywhere in Europe, to all delivery addresses for our products. Where an electrical or electromechanical system manufactured by Sirail is delivered, you can call on our skilled team for any maintenance, repair, or configuration change.

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Sirail Services

A dedicated entity specialized to operate where you need us to operate

Our highly qualified technicians, able to work in all types of environment, assist our customers with their tasks. Their wide range of skills and qualifications enable them to service, maintain or even recondition your products. They can take in charge mechanical as well as electrical tasks, even going to paint or welding jobs.

Our know-how extends to adjacent processes, such as interior fitting and windshield gluing. Our expertise is recognized by our customers, who can rely on our reactivity for intervention throughout Europe.

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Our sectors

We can address the requirements of most industries

Our products

Sirail, expert in all on-board electrical products and systems

Sirail products

Customizable or standard… Sirail “plug and play” solutions

Footrest LiftOk KeyBox

Electrical cable and harnesses

All on-board wiring configurations

LV, MV, HV Signalisation Distribution

Prefitted electric harnesses

Pre-assembled complex harnesses on mechanical supports

Plug & Play Pre-assembled

Electrical cabinets

All on-board electrical cabinet configurations

LV, MV, HV Signalling Distribution

Electrical cubicles

Electrical cubicles or modules of any size


Driver desks

Ready-to-plug solutions or pre-assembled sub-assemblies

"Plug & Play" Pre-assembled

Sirail in figures


Surface (m2)


Industrial sites




Turnover (M€)

Customer cases

RER New Generation

Railway Electrical equipment

As part of a project to manufacture and deploy the new generation of rolling stock for Paris’s public transport system (RERNG), SIRAIL is contributing to its customer’s success by being its partner in innovation, through the design and manufacture of electrical equipment designed to incorporate the electrical and electronic equipment required for the train’s proper operation.

SIRAIL has designed electrical equipment with the aim of optimizing the space available for passengers by proposing customized solutions:

  • Mechanical, electrical and thermal studies
  • Definition of mechanical drawings and electrical diagrams
  • Space occupancy simulations
  • Study and simulation of cabling routing using mock-ups
  • Qualification of equipment through type testing (thermal, shock and vibration)
Studies Design Simulations Mock-ups Qualification Production

Medium-range radars

Defense Signal harnesses Power harnesses

Medium-range radars are now at the heart of the security system for forces on operations, providing crucial surveillance of air activities in the most hostile environments.


Their designers have entrusted us with the production of all types of harnesses, from signal to power, as well as their integration into mechanical assemblies.


Sirail provides its know-how and support to ensure trouble-free operation of this equipment, and the best possible reactivity for the manufacturer. Our teams are deeply involved, taking care of every stage of the process, from supplier management and selection to final export of the equipment, including, of course, technical expertise and high-quality production.

Advisory Sourcing Production

Engins de forage

Industry Wired systems Control booths

For more than 40 years, Sirail works with its customers cabling products destined to be mounted on drilling machines, and therefore exposed to the most demanding environments.


The cooperation is so fruitful that Sirail was chosen to manufacture related products, such as the cabling and the integration of control cabins of a electrolyser production line.


Considering the long-term relationship, Sirail has been able to put in place different optimisations, to reduce change implementation time, for example, or communicate in nearly-real-time the production status, giving its customer the assurance of on-time delivery, at the correct revision and sporting impeccable quality.

Demanding environment Production Process optimizations

Quality certifications

Sirail has the most demanding quality certifications in the sector

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