Defense Activities
The Defense activity requires the best technology
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 the Military authorities.
Our products are used in Fighter jets, Missile systems, Ground vehicles, Bomb racks, submarine … included inside Electrical power supply & Power distribution.
Defense Activity by FIRST
Our Relays are in accordance to customer specific requests, and to the relevant applicable standard specifications, such as MIL- PRF- 83536, MIL-PRF-83726, MIL-PRF-6106, M5757, and relay sockets qualified to M12883.




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, Commercial Aeronautic, Industry & Railways.
FIRST is present in the Defense industry since 1960, through DEUTSCH Relays, REL & STPI, and is specifically dedicated to supplying high-reliability electromechanical relays for this market.
The qualification to the highest standards and our involvement in the major Defense programs show the trust of the Experts Community in our products and in our capacity to develop, manufacture, and deliver high reliability relays for those military applications.
FIRST encourages the development of long lasting relationships with its customers, suppliers and employees in order to achieve reasonable, regular and sustainable growth for many years to come!
FIRST is ready to support your Defense 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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