EN 50155 Managed Switch



✓ Compact 12 port switch, approved for rolling stock

• 12 x 100 Mbps

✓ Designed and built for extreme operational environments

• Robustness-enhancing design features
• Extensive range of approvals, by IEC/ISO 17025 certified
• Quality-focused engineering and production located in Sweden

✓ Powered by WeOS, Westermo’s proven network operating system

• Strong set of protocols and functions, including DHCP (server and client)
• High level cyber security
• Easy to use


The Viper-112A is a managed 12-port switch optimised for the needs of the railway rolling stock market.

The Viper is designed to withstand the tough environment on-board trains, exposing the switch to constant vibration, extreme temperatures, humidity and a demanding electrical environment.

A GORE-TEX® membrane prevents internal condensation. Threading integrated in chassis provides for additional vibration
resistance. High-level isolation between all interfaces enables direct connectivity to vehicle auxiliary power and protects against overvoltage and flashover. IP67 protection prevents ingress of water and dust. An overall optimised design results in an extremely compact package in combination with very high MTBF for easy integration and low lifecycle cost.

Thorough type testing at independent labs certify the compliance to a wide range of standards, not least EN 50155, where the highest class is achieved in all aspects. The state-of-the-art Westermo production facility ensures the quality of each individual unit, e.g. through temperature cycling burn-in testing.

The WeOS operating system offers an extensive suite of IP networking features for resilient and flexible networks, e.g. the FRNT ring protocol with very fast failover on 100 Mbps ports. The backup device accessory matches the Viper in robustness and offers easy configuration update and backup.

Meeting the requirements of the railcar market, the Viper is very well suited for deployment in any other application with severe operating conditions and tough environments, for instance in the mining industry.

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Caractéristiques Techniques

EN 50155 Managed Switch
12 x 100 Mbps ports
1 x USB
1 x RS-232 console port

Switchs Ethernet EN 50155 compacts et fiables

Afin de répondre à la demande croissante de fiabilité des réseaux de communications ferroviaires embarqués, Westermo a introduit une nouvelle génération de switchs Ethernet industriels permettant la création d’architectures réseaux extrêmement fiables et pérennes. Conçue autour du “Westermo IP train concept”, la gamme de produits Viper est spécialement adaptée aux applications embarquées à bord des véhicules ferroviaires et fournit une solution idéale pour les systèmes de contrôle embarqués, l'amélioration des niveaux de fiabilité, la conception de réseau simplifiée, l'installation et la maintenance.

Jennifer Mooney-Perrotta

Customer service, Westermo North America

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