Founded with a historical expertise in the design & manufacture of electromechanical relays for extreme environments,
STPI | REL has since expanded its product range to include time-delay relays, electronic relays, relay cards,
and various electronic systems. STPI | REL has been recently acquired and are now brands of Crouzet.
STPI | REL strives to continue to provide innovative solutions to its customers’ needs
within a global and changing technological environment.
Why choosing STPI | REL for your hermetically sealed relays?
Worldwide presence
Strong experience for testing, dedicated screening & qualification issues
Knowledge in harsh environments, safety & reliability performances
1M+ products shipped each year
60+ years’ experience in hermetically sealed relays
Tell us about your project needs
60+ years of Hermetically Sealed Relays qualification expertise.
Our expert team is here for you.
An electromechanical Relay (Non Latching) is an electrical switching device.
Its function corresponds to a mechanical switch, which is electrically actuated.
The main advantages are the electrical isolation of the driving system and the load side,
the insulation resistance of the open contacts, as well as the low resistance of the closed contacts.
Design LAB 60+ years of Non Latching Relay qualification expertise.
Design and adaptation agility at your service : we can answer your specific needs by offering you the best customised solution,
a long term partnership commitment and a multidisciplinary team dedicated to your program
Latching Relays
An electromechanical Latching relay is an electrical switching device.
Its function corresponds to a mechanical switch, which is electrically actuated.
Latching relays are types that remain in the last switching to which they were driven,
without requiring continuous power to achieve it.
Design LAB 60+ years of Latching Relay qualification expertise.
Design and adaptation agility at your service : we can answer your specific needs by offering you the best customised solution,
a long term partnership commitment and a multidisciplinary team dedicated to your program
Timer Relays
STPI | REL Time Delay relays are relays which includes an electronic timer which allows the relay to switch on an event based on time.
Three main operating modes are available : Time delay on operate ; Time delay on Release ;
Time delay on command. The time period can be fixed or adjustable with external components.
Design LAB 60+ years of Timers Relay qualification expertise.
Design and adaptation agility at your service : we can answer your specific needs by offering you the best customised solution,
a long term partnership commitment and a multidisciplinary team dedicated to your program
Socket & Accessories
STPI | REL manufactured Sockets are an interface between the relay and the circuit in which it is assembled. This circuit can be wired or embedded in a PCB.
Sockets function as a relay base, on which the relay will be positioned.
Many options exists (type of cabling, type of housing, type of fixing, type of connection, type of keying…)
Design LAB 60+ years of Sockets qualification expertise.
Design and adaptation agility at your service : we can answer your specific needs by offering you the best customised solution,
a long term partnership commitment and a multidisciplinary team dedicated to your program
Relay cards & Systems
STPI | REL offer various relay and timer configurations on PCB relay cards that are designed to fit the most commonly used racks.
STPI | REL will also custom design, manufacture and test cards to meet your exact requirements.
The use of STPI | REL relay cards easily allows for future system modifications and upgrades.
Circuit breaker status using communication buses (ARINC, CAN,…)
Solid state switching & integration
D0254 DAL B
D0178
Safety cards DAL A / SIL
Equipments
Relays cards (PCB)
Relays panels (wiring system, PCB)
Relays sub-assemblies
Integrated architecture to optimize
Electrical power performance
Safety and reliability assemblies
Design LAB 60+ years of Relays Cards & Systems qualification expertise.
Design and adaptation agility at your service : we can answer your specific needs by offering you the best customised solution,
a long term partnership commitment and a multidisciplinary team dedicated to your program
Custom Hermetically Sealed Relays designed for your applications
30 years of customization, adaptation & co-design expertise at your service
Our design office examines all your requests and specific needs, bringing you customised solutions adapted to your requirements,
the constraints of your sector and your applications; all according to your specifications.
The Aerospace Industry 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 various Aircraft manufacturers.
Our products are used in Electrical power supply, Power distribution, Flaps control, Landing gear controls, Fuel pump controls, De-Icing systems, Fly By Wire...
Aerospace Activities by FIRST
Our Relays are in accordance to customer specific requests, and to the relevant applicable standard specifications, such as MIL & MS specifications, ASNE, BACR, BOEING, …
We provide a complete range of hermetically sealed relays for Aviation Application from 1 to 75 Amps.
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 Activities
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.
The Rail Industry 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 various Rail authorities.
Our products are used in Switching equipment, Braking systems, Door controls, Computer based train controls, Safety relays…
Rail Relays & Systems by FIRST
Our Rail Relays are in accordance to customer’s specific requests, and to the relevant applicable standard specifications, such as NF-F-62002, EN-50205,…
We provide a complete range of hermetically sealed relays for Rail Applications from 1 to 50 Amps.
The Industry 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 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 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.
The Space Industry requires the best technology
REL, the FIRST Space Division 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.
Our products are used in Satellite control systems, Launching control systems, Battery switching, Solar panel control, and are qualified to ESA ESCC 3601 / 3602.
Space Relays & Systems by REL, FIRST Space Division
Our Space Relays refer to customer’s specific requests, and to the relevant applicable standard specifications, such as ESA/ESCC, MIL, NASA, JAXA...
We provide a complete range of hermetically sealed relays for Space Application from 1 to 75 Amps
This website uses cookies to guarantee you the best possible experience. The buttons below allow you to accept or refuse them. Allow CookiesDismissCookie settings
Privacy & Cookies Policy
Privacy Overview
This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may have an effect on your browsing experience.
Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features.
Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors.
Analytical cookies are used to understand how visitors interact with the website. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc.
Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. These cookies track visitors across websites and collect information to provide customized ads.
