Westermo Viper-012 EN 50155 Unmanaged Switch
Alternate Item Number: 3641-0540
UPC: 100000000000
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Contact for Pricing
Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.
Overview
- Fully EN 50155 compliant for rail applications
- 12 x 100 Mbit/s Ethernet ports with M12 connectors
- Wide 24-110 VDC power range
- Operating temperature: -40°C to +70°C
- IP67 rated enclosure with anti-condensation GORE-TEX® membrane
Specifications
Connection Type | M12 |
Ip Rating | IP66/IP67 |
Series | Viper |
Voltage Rating | 16.8-143 VDC |
Package Weight (Imperial) | 3.20 lbs |

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What is the operating temperature range for the Viper-012?
The device can operate in ambient temperatures ranging from -40°C (-40°F) to +70°C (+158°F).
Does the Viper-012 meet EN 50155 standards?
Yes, the Viper-012 is fully EN 50155 compliant and has been externally tested and verified to meet these standards.
What is the operating voltage range for the Viper-012?
The Viper-012 has an operating voltage range of 16.8 to 143 VDC, with a tolerance of 14.4 to 154 VDC for 100 ms.
How many Ethernet ports does the Viper-012 have and at what speed?
The Viper-012 is equipped with 12 Ethernet ports, each supporting 10/100 Mbit/s speeds.
What are the storage and transport temperature limits for the Viper-012?
The storage and transport temperature range for the Viper-012 is -50 to +85°C (-58 to +185°F).
What is the degree of protection for the Viper-012 enclosure?
The Viper-012 has an IP67 degree of protection, indicating it is dust-tight and protected against immersion in water.
What is the rated current consumption of the Viper-012?
The rated current is 350 mA at 24 VDC and 90 mA at 110 VDC.
What is the weight of the Viper-012?
The Viper-012 weighs 1.3 kg.
What is the MTBF for the Viper-012?
The Viper-012 has a Mean Time Between Failures (MTBF) of 636,000 hours.
What type of connectors are used for the Ethernet ports?
The Ethernet ports utilize M12 connectors, with integrated threading to ensure an IP67 seal.
Frequently Asked Questions about Westermo
What certifications and standards do Westermo products comply with?
Westermo products meet rigorous international standards across electromagnetic compatibility (EMC), mechanical protection, functional safety, and regulatory compliance. Key certifications include EN 61000 series for industrial immunity and emissions, EN 50121-4 for railway applications, EN 50155 for on-board rail systems, UL, CE, UKCA, EAC, and C-Tick. Our products are engineered to withstand harsh industrial environments and comply with IP protection standards, mechanical enclosure requirements, and functional safety specifications like EN 61800 and IEC 61508.
What industries and applications are Westermo products used for?
Westermo products are designed for mission-critical industrial applications across multiple demanding sectors, including transportation (railways, roads, tunnels), energy infrastructure, water treatment, and substation automation. Their robust data communication devices are engineered to operate in harsh environments where standard commercial-grade equipment would fail, providing resilient communication infrastructure for control and monitoring systems with extreme temperature tolerance and high reliability.
What are the main product lines offered by Westermo?
Westermo offers a comprehensive range of industrial data communication products across six primary product lines: Ethernet Switches, Extenders, Routers, Modems, Converters, and Accessories. These robust devices are engineered for harsh environments and mission-critical applications in industries like transport, water, and energy, with specific solutions for railways, substations, and remote network access.
What are the key features of Westermo products?
Westermo products feature robust industrial-grade data communication devices engineered for harsh environments, with key characteristics including: high electromagnetic immunity (EN 61000-6-2), industrial emission compliance (EN 61000-6-4), extensive railway and transportation approvals (EN 50121-4, EN 50155), and rigorous manufacturing quality standards. Their devices provide mission-critical communication infrastructure with advanced features like secure remote access, network resilience, and comprehensive cybersecurity protections through their proprietary WeOS operating system.
What communication protocols do Westermo products support?
Westermo products support a wide range of industrial communication protocols, including Ethernet, RS-232, RS-422, RS-485, PROFIBUS DP, M-Bus, and 20 mA current loop. Our industrial converters and communication devices are designed to provide robust connectivity across multiple communication standards, enabling seamless integration in harsh industrial environments.
What environmental ratings do Westermo products have?
Westermo products feature robust environmental ratings across multiple standards, including IP66 protection, NEMA Type 4X, and UL/CSA certifications for harsh industrial environments. Their devices are designed to withstand extreme temperatures from -40°C to 130°C, resist dust, water ingress, and provide protection against external environmental challenges in industrial settings.
What accessories are available for Westermo products?
Westermo offers a comprehensive range of accessories to complement their industrial data communication devices, including optical transceivers, power supplies, backup devices, cables, and antennas. Key accessories include SFP transceivers with transmission ranges from 2 to 120 km, industrial power supplies like PS-30 and PS-100, M12 USB backup devices, and specialized cables such as diagnostic, M12, power, and radio cables in various lengths.
How are Westermo products typically installed?
Westermo products are typically installed using WeConfig, their network configuration management tool that simplifies device setup and maintenance. The installation process involves connecting devices to the network, using WeConfig to automatically discover and configure them, and leveraging project files that store network topology information for easy replacement and reconfiguration. Devices can be mounted on DIN rails in industrial environments and are designed for robust installation in harsh conditions like transportation, energy, and water infrastructure.
What technical support does Westermo offer?
Westermo offers comprehensive technical support through multiple channels. Their engineering team provides expert guidance for selecting, configuring, and installing data communication solutions across industrial markets like transport, water, and energy. Customers can access support via their website (www.westermo.com), and for North American customers, direct support is available through Gross Automation at +1 (262) 252-1600 or [email protected].








