Industry Activities
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FIRST was founded on the basis of providing its customers with a wide range of hermetically sealed, high reliability relays and switching solutions for the most severe applications.
FIRST relays are manufactured, tested and screened to customer specifications and approved by various Nuclear Power Plant authorities.
Our products are used in various industries, everywhere reliability and safety are key. FIRST Relays are qualified to Level K3 (EDF) for use in Nuclear Power Plants, where vibration & radiation represent a harsh environment.
Power Plant Relays & Systems by FIRST
Our Relays are in accordance to customer’s specific requests, and to the relevant applicable standard specifications, such as K3 level for EDF...
We provide a complete range of hermetically sealed relays for power plant from 1 to 50 Amps.




Established in 1955 and historically positioned in the defense sector, FIRST continues to develop and adapt its product capabilities to ever-changing market demands. Today, FIRST, with operations in France and India, supports several market sectors including Space Applications, Commercial Aviation and Defense aeronautic, Industry & Rail.
FIRST, is present in the Energy industry for many years, and is dedicated to supplying safety & high-reliability electromechanical relays, PC boards & Relays panels, and sub assemblies according to NF-F-62002 & RCC-E.
FIRST with its own design engineering team, proposes innovative solutions with a large range of temperature, low consumption, electronic devices and safety equipment according to customer specifications. The qualification to the highest standards and the our involvement in the major Energy programs show the trust of the Energy Experts Community in our products and in our capacity to develop, manufacture, and deliver high reliability relays & solutions.
FIRST is ready to support your Energy & Industrial projects.
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- MARKETS
- Aerospace
- Military / Defense
- Marine
- Railway
- Space
- Industry /Other
- PRODUCTS
- Non Latching Relays
- Latching Relays
- Sockets
- Application Notes
- Maintenance
- Timers
- CONTACT RATING
- 1A
- 2A
- 3A
- 5A
- 10A
- 15A
- 25A
- 50A
- 1A 72Vdc
- 3A 72Vdc
- 20mA 72Vdc
- 3A 110Vdc
- 15A 30Vdc
- 75A 28Vdc
- 50A 50Vdc
- 1A 28Vdc
- 1A 28Vdc 60mA
- CONTACT ARRANGEMENT
- 1PDT
- 2PDT
- 3PDT
- 4PDT
- 6PDT
- 1NO 1NC
- 2DPDT
- 3DPDT
- 3NO SPDT
- 2PDBDT
- 1NO + 1PDT
- 1PDBDT
- 3PDBDT
- 2PDT+1PDT
- 2NO 2NC
- 3NO 3NC
- 4PDT/RAILWAYS
- 1NO 1NC + 2PDT
- DPDT
- 1NO 1NC + 4PDT
- 2NO 2NC + 2PDT
- 4NO + 1NO 1NC
- 1NO 1 NC + 1PDT
- 6PDT/RAILWAYS
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