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Layer 3 Modular Managed Switch – IEC 61850-3 – 12x Gigabit ports – 4x 10G SFP+ uplinks – modular slots for fibre/copper/PoE – advanced routing – IEEE 1588 PTP – dual LV/HV power options – 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 MDS-G4012-L3-4XGS-T is a wide-temperature (-40 to 75°C) modular Layer 3 managed switch that combines Gigabit density, 10G uplink performance, and advanced routing in a compact, rugged design. Fully certified to IEC 61850-3 and IEEE 1613, it is engineered for power substations, utilities, and critical industrial infrastructure requiring both high-performance switching and Layer 3 routing.
The switch delivers a total of 12x Gigabit ports with 4x integrated 10G SFP+ uplinks for high-bandwidth backbone connectivity. Expansion is provided by LM-7000H interface modules, which support copper, fibre, or PoE+ options, enabling a tailored configuration for edge access or aggregation. Two hot-swappable power slots support LV (24/48 VDC) and HV (110/220 VAC/VDC) inputs, allowing redundant power supply arrangements for maximum availability.
In addition to Layer 2 switching, the device offers comprehensive Layer 3 routing features, including static and dynamic routing, inter-VLAN routing, and multicast routing (IGMP/MLD), enabling more efficient traffic segmentation and backbone design in large-scale deployments. These capabilities allow the MDS-G4012-L3-4XGS-T to function not only as an access or aggregation switch but also as a compact routing platform for substation and industrial networks.
Resiliency protocols include PRP and HSR, as per IEC 62439-3, as well as Turbo Ring/Chain, RSTP, and MSTP. Meanwhile, hardware-based IEEE 1588 PTP, with IEC 61850-9-3 and IEEE C37.238 profiles, ensures sub-microsecond time synchronisation. MMS/IEC 61850-90-4 support and an HTML5 web interface simplify SCADA integration and system management.
With its extended temperature tolerance, advanced Layer 3 routing features, modular expansion, and 10G uplink performance, the MDS-G4012-L3-4XGS-T provides a powerful, standards-based solution for building resilient, high-performance substation and industrial Ethernet networks.
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 12 Port Layer 3 Gigabit Modular Managed 10Gigabit Ethernet Switch – Extended Wide Temperature Operation
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MDS-G4012-L3-4XGS-T
12 Port Layer 3 Gigabit Modular Managed 10Gigabit Ethernet Switch – Extended Wide Temperature Operation
After it became obsolete, our client required a replacement for their existing single board computer which was integrated into custom 3u rack chassis.