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EN 50155 M12 Managed Switch – 12x Fast Ethernet M12 – 4x Gigabit uplinks – optional bypass relay models – dual 24–110 VDC inputs – Turbo Ring/Chain – Extended wide -40 to 75°C operation
Moxa Products Supplied To the UK, From the UK
As an official UK distributor of Moxa products since 2014, we at Impulse are proud to be affiliated with Moxa Technical College. Our partnership enables us to provide comprehensive in-house training and first-line technical support, and our team of Industrial Internet of Things (IIoT) specialists are fully equipped to guide you through every step of the process. Whether you require assistance with installation, troubleshooting or anything else, our team is ready to assist you.
Technical Support from Impulse
Our commitment doesn't end with the initial setup—we provide lifelong technical support for the entire range of Moxa products at no extra charge. Count on us to ensure that your network operates at its peak performance throughout its entire lifespan.
The TN-4516A-4GTX is an EN 50155-compliant managed Ethernet switch designed for railway and rolling stock applications. Using rugged M12 connectors, the switch ensures vibration-proof and shock-resistant links, guaranteeing reliable operation in trainborne and wayside environments.
It provides 12x Fast Ethernet M12 ports alongside 4x Gigabit uplinks, delivering a high-capacity backbone for onboard or wayside communication. Bypass relay models are available, allowing critical communication links to remain active even if the switch experiences a power failure or requires maintenance — a key requirement in safety-critical railway networks.
Certified to EN 50155 mandatory tests for temperature, vibration, surge, power insulation, and ESD, the TN-4516A-4GTX is fully rail-ready. Dual isolated 24–110 VDC inputs increase power resilience and support redundant feeds across diverse rolling stock power systems.
The switch delivers network resiliency with Turbo Ring and Turbo Chain (<20 ms recovery across 250 switches), as well as standards-based RSTP/MSTP. Advanced security features include IEEE 802.1X, TACACS+, SSH, and HTTPS. Management is supported via web, CLI, Telnet, or SNMPv1/v2c/v3. VLANs, QoS, IGMP snooping, Ethernet/IP, and Modbus TCP are also available for efficient traffic management.
Operating from -40 to 75°C and with optional conformal coating, the TN-4516A-4GTX is designed to withstand harsh railway environments. Its combination of robust M12 connectors, bypass relay options, and advanced redundancy features makes it a dependable choice for resilient Ethernet backbones in modern railway communication systems
Delivery & Returns
We offer a range of delivery options to suit your needs.
UK Mainland
Northern Ireland & Highlands
Ireland
RMA
In order to process returned goods, Impulse Embedded Limited uses an internal RMA system. Before returning goods for any reason, please contact Impulse Embedded Limited (returns@impulse-embedded.co.uk) to request an RMA number. Please confirm the reason for the return of the goods, providing the Serial Number, Product Code, and Impulse Embedded Limited Invoice Number (if known).
When returning goods, please ensure they are suitably packed so as to avoid damage, are in the original packaging, along with all accessories, with the outer packaging marked with the RMA number. It is recommended that you use a signed delivery service, as goods lost in transit are not the responsibility of Impulse Embedded Limited.
Please do not write the RMA number on the goods or on the original packaging. Impulse Embedded Limited may refuse returned goods and return them if they arrive without an RMA number, or not in the original packaging.
Moxa 16 Port EN 50155 Rail Certified Managed Ethernet Switch
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Select the products of this series that you wish to request quantity or project pricing, or lead time information for:
TN-4516A-4GTXBP-WV-CT-T
16 Port EN 50155 Rail Certified Managed Ethernet Switch – 12x Fast Ethernet – 4x Gigabit Ethernet – Bypass Relay – Conformal Coating
TN-4516A-4GTXBP-WV-T
16 Port EN 50155 Rail Certified Managed Ethernet Switch – 12x Fast Ethernet – 4x Gigabit Ethernet – Bypass Relay
After it became obsolete, our client required a replacement for their existing single board computer which was integrated into custom 3u rack chassis.