What ARCYS does

ARCYS is a French privately-held designer and manufacturer of safety-critical electronic equipment and instrumentation for severe industrial environments, headquartered in Blagnac near Toulouse. Founded in 1975, the company serves three primary verticals: civil nuclear (PWR and EPR reactors), defence (French Navy nuclear-powered submarines and aircraft carriers), and railway transport (urban metro safety systems). Its portfolio spans three technology pillars — safety control-command systems (including the UNICORN full-analogue NCSS platform and SIL3/SIL4 safety computers), qualified nuclear instrumentation (RCC-E/RCC-M certified level, pressure, hydrogen, oxygen, sodium and conductivity analyzers), and a proprietary secure wireless IIoT suite built on LoRa (XENON networks, InOPS positioning, EndPoint transmitters).

Underlying technology combines analogue and digital electronics (FPGA, microcontroller), embedded software, metrology and mechanics, with cybersecurity-architected LoRa-based communication capable of multi-application instrumentation, location tracking, and lone-worker protection in irradiated or harsh settings. ARCYS holds a broad qualification portfolio covering IEC 61508 SIL3/SIL4, EN 61513, RCC-E/RCC-M K1-K3, RCC-E 2012, ESPN, EN 50155, IEC 62566, DO-254, AECTP 500, and RATP STM specifications.

The company is majority-owned by TechnicAtome (51%, a French state-linked compact nuclear reactor specialist) and 49% by Framatome, embedding it within the French state-backed nuclear industrial ecosystem. Revenue is generated through project-based equipment sales, long-tail MRO/services ("Maintien en Conditions Opérationnelles") across 40-50 year equipment lifecycles, and custom development/qualification contracts. Go-to-market is direct B2B field sales into a small set of system integrators and public/private operators (EDF, Framatome, Naval Group, CEA, Alstom, CNNC, CGN, Energoatom, Rosenergoatom), with international reach into China, Ukraine, and Russia. Pricing is not publicly disclosed and is project-specific given qualification and certification requirements.

Name

ARCYS

Legal name

ARCYS, Société par Actions Simplifiées

Website

https://arcys.fr

Company type

Private

Founded year

1975

Operating status

Operating

Headcount range

51–100 employees

Short description

ARCYS is a French safety electronics manufacturer designing certified instrumentation and control-command systems for nuclear power plants, naval defence, and railway transport, serving operators like EDF, Framatome, Naval Group, and Alstom across 40-50 year equipment lifecycles.

Ownership category

akta.pro rank

Product category

Industrial Safety Electronics & Instrumentation

NAICS

Analytical Laboratory Instrument Manufacturing (334516), Electronic and Precision Equipment Repair and Maintenance (811210)

SIC

Instruments For Meas & Testing Of Electricity & Elec Signals (3825), Industrial Instruments For Measurement, Display, And Control (3823), Measuring & Controlling Devices, Nec (3829)

akta.pro primary industry

Integrity Management for High-Voltage Assets (Transformers, Switchgear, Cables) (EUAEAKAL)

akta.pro secondary industries

Asset Management Strategy & Lifecycle Planning (ISO 55000, Criticality) (EUAJAEAC), Reliability, Safety & Risk Engineering (RAMS/PSM) Consulting (BPAHAIAK)

Keywords

• Nuclear safety electronics
• Safety instrumentation sensors
• Industrial wireless IIoT
• Railway safety computers
• Defence control systems

Headquarters

HQ city

Blagnac

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Technology or R&D, Infrastructure, Supply Chain, Marketing or Sales

Revenue model

1. Safety Electronics Equipment: Design, manufacture, and sale of safety electronic equipment (control-command systems, instrumentation, wireless systems) for defence, civil nuclear, and transport sectors. Products have long lifecycles (40-50 years) with potential for MRO revenue throughout the equipment lifecycle.
2. MRO and Maintenance Services: Maintenance, repairs, and operational support services including on-site interventions, obsolescence management, and skills transfer for keeping customer equipment operational over decades.
3. Custom Development and Qualification: Custom development and qualification services for specialized nuclear instrumentation and control equipment, often involving long-term contracts with major nuclear operators.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

ARCYS designs, qualifies, manufactures, and maintains safety-critical electronic systems for defence, civil nuclear, and railway transport customers. Its offerings span control-command platforms (UNICORN analogue safety platform, MP14 safety computers), nuclear instrumentation (level, pressure, and physicochemical analyzers), secure wireless IIoT systems (XENON private LoRa networks, EndPoint LoRa transmitters, InOPS geolocation), and lifecycle MRO services supporting 40-50 year equipment lifecycles.

Product overview

ARCYS offers a comprehensive portfolio of safety electronics and instrumentation products for demanding industrial environments in nuclear, defense, and transport sectors. The portfolio is organized into three main pillars: (1) Safety Control Solutions including UNICORN analogue safety platform and MP14 safety computers for subway systems, plus the Banc Fonctionnel Générique (BFG) test equipment; (2) Instrumentation encompassing level sensors, pressure sensors, and physicochemical analyzers (hydrogen, oxygen, sodium) for nuclear applications; and (3) Wireless Systems featuring XENON private IIoT networks (XENON, XENON Lite, XENON Mobile Case), EndPoint LoRa transmitters, and InOPS geolocation solutions. ARCYS also distributes Dr. Thiedig measurement solutions including oxygen, conductivity, pH, and silica analyzers for the nuclear sector in France and the UK.

Differentiator

Problem solved

Functional benefit

Brands

• UNICORN: Development of an analogue safety control platform for the PWR - a full analogue control safety platform qualified and diversified for Non Computerized Safety System (NCSS) of nuclear power plants.
• XENON
• InOPS
• EndPoint LoRa

Products and services

• UNICORN Full analogue control safety platform qualified and diversified for Non Computerized Safety Systems (NCSS) of nuclear power plants; first application for the 2 EPRs at Hinkley Point C with EDF and Framatome.
• MP14 Safety Computers Safety computing hardware (SIL3/SIL4) for the MP14 program equipping RATP Parisian metro Lines 6, 11, and 14, comprising main computers (CP) and security interface module computers (MIS) for automatic pilot and door opening control.
• Banc Fonctionnel Générique (BFG) Generic Functional Bench enabling automated testing of multiple product types during production and after-sales service phases, with step-by-step fault diagnosis, automatic self-test, and calibration capabilities.
• XENON Private LoRa IIoT Network Complete private LoRa network solution for permanent industrial IIoT deployments, providing gateway, application server, local storage, and connectors for industrial systems in demanding environments; family includes XENON, XENON Lite (small-scale), and XENON Mobile Case (portable).
• EndPoint LoRa Transmitters Ready-to-use LoRa transmitters for remote monitoring of industrial data including temperature, pressure, valve opening, and humidity; variants include EndPoint ANA-TOR (0-10V/4-20 mA/TOR), EndPoint Temperature RTD (PT100), and EndPoint Temperature Thermocouple (Type K).
• InOPS Geolocation System Indoor and outdoor positioning solution using LoRa, Bluetooth, and RFID technologies for precise, autonomous, and secure tracking of assets or personnel on industrial sites; includes MOTE Bluetooth LoRa and MOTE RFID LoRa tags.
• RCC-E Certified Nuclear Instrumentation Sensors RCC-E certified level sensors and differential pressure sensors (including Optical Level Sensor and CZMK Pressure Sensor) designed for PWR and EPR power plants, featuring ultra-reliability, robustness, and maintenance-free operation in irradiated environments.
• Nuclear Physicochemical Analyzers Continuous, reliable, and secure measurement analyzers for nuclear facility monitoring including DH1021 dissolved hydrogen analyzer (with H2-02 purity board option), OEG2071 oxygen meter (with DT-OEG testing device), and SCA23 sodium analyzer for fast neutron reactor coolant circuits.
• REN/RES Flow Meter Flow meter for liquid physicochemical analysis in nuclear circuits, designed for fluid monitoring in nuclear applications.
• Dr. Thiedig Distributed Measurement Analyzers High-precision analyzers from Dr. Thiedig distributed exclusively by ARCYS in France and the UK for nuclear sector applications: oxygen analyzer, conductivity meter, degassed conductivity analyzer, pH analyzer, and silica analyzer for water and steam quality monitoring. ARCYS also provides installation, maintenance, and MCO support.
• MCO (Maintien en Conditions Opérationnelles) and After-Sales Services Lifecycle maintenance, repair, on-site intervention, obsolescence management, and skills-transfer services to keep customer safety electronics operational over 40-50 year equipment lifecycles in nuclear, defence, and railway environments.

Named customers11 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

Four partnerships are on record, tiered core and supporting.

• FramatomecoreStrategic or Co-development PartnerFramatome holds 49% of ARCYS shares. Framatome is a world leader in high power Civil Nuclear reactors (EDF). This strategic partnership enables close collaboration on nuclear instrumentation projects, including the UNICORN platform for Hinkley Point EPRs.
• Dr. ThiedigsupportingTechnology or IntegrationARCYS is the official and exclusive distributor of Dr. Thiedig measurement solutions for the nuclear sector in France and the United Kingdom. In addition to distribution, ARCYS provides installation, maintenance, and MCO support for the entire range.
• AlstomcoreStrategic or Co-development Partner15-year partnership for safety computers (SIL 3 and 4) for automatic pilot and door opening control functions. Study and manufacture of over 1,500 computers. Currently working on MP14 program for Parisian metro Lines 6, 11, and 14.
• Naval GroupcoreStrategic or Co-development Partner40-year partnership for ISS systems (fire and plumbing protection) for French nuclear submarines (SNA, SNLE, RES, RJH, Barracuda). SIL 3 certificate obtained for ISS with on-board ship intervention capability.

Scale indicators7 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Alstom: Global rail OEM and integrator of metros and rolling stock, including the MP14 program for RATP. Direct peer and major customer for SIL3/SIL4 safety computers used in automatic pilot and door opening control functions in metro systems.
• Mirion Technologies: Global leader in radiation detection, nuclear instrumentation, and safety I&C for nuclear power plants, fuel cycle facilities, and defense applications. Direct competitor in nuclear-qualified instrumentation and analyzers, with overlapping products in level, pressure, and physicochemical measurement for safety-critical environments.
• Thales: Supplier of rail signaling (CBTC, ETCS), defense electronics, and aerospace safety systems. Directly comparable to ARCYS in safety-critical rail signaling computers and SIL-qualified defense/naval electronics for French and international customers.
• Framatome: World leader in high-power civil nuclear reactors and a major supplier of nuclear instrumentation, control-command, and safety systems. Direct competitor in nuclear I&C and ARCYS's 49% shareholder; competes on qualified platforms while also being a major customer through joint programs.
• Westinghouse Electric Company: Designer of the AP1000 reactor and a major supplier of nuclear instrumentation, control, and safety systems globally. Competes with ARCYS in qualified I&C platforms for new-build reactors and supplies similar long-lifecycle safety electronics to the same nuclear customer base.
• Siemens Mobility: Global supplier of rail signaling, train protection (ATP/ATO), and safety-critical onboard computing for metros and mainline rail. Direct peer to ARCYS's SIL4 safety computer business for automatic train protection and door control functions.
• Curtiss-Wright: Defense electronics specialist with a substantial nuclear segment supplying qualified I&C, reactor protection systems, and embedded computing for naval and civil nuclear programs. Closely comparable to ARCYS in safety-critical defense electronics and nuclear-qualified instrumentation.

Broad incumbents

• Emerson: Process automation and instrumentation major with qualified products for nuclear power plants (Rosemount, Fisher). Competes with ARCYS in nuclear-grade instrumentation and analyzers but addresses a much broader industrial automation market.
• Schneider Electric: Global industrial automation incumbent with nuclear-qualified I&C and process safety offerings serving power, water, and process industries. Overlaps with ARCYS in safety PLCs and instrumentation for nuclear environments but at much broader scope and scale.
• Rolls-Royce: Designer of compact naval nuclear reactors and supplier of civil nuclear services. Comparable to ARCYS through its TechnicAtome/competing small reactor ecosystem and its nuclear-qualified engineering capabilities, though at much larger scale and broader scope.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/arcys

Compliance15 records

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about ARCYS