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Layer 2 Modular Managed Switch – IEC 61850-3 – 20x Gigabit ports – modular copper/fibre/PoE options – PRP/HSR redundancy – IEEE 1588 PTP – dual LV/HV power – 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-G4020-T is the wide-temperature version of the modular MDS-G4000 family, designed for deployment in harsh outdoor or industrial environments. Operating from -40 to 75°C, it ensures reliable service in extreme climates while delivering the same modular flexibility as the standard model.
It supports up to 20 Gigabit ports, featuring 4 fixed ports and 4 modular slots for LM-7000H expansion cards. Options include copper, fibre, PoE+, and PRP/HSR modules, enabling tailored configurations for aggregation or device powering. Dual hot-swappable LV (24/48 VDC) or HV (110/220 VAC/VDC) power modules provide redundancy for critical applications.
Built for substation automation, the MDS-G4020-T includes PRP and HSR redundancy (IEC 62439-3), Turbo Ring/Chain, and RSTP/MSTP for resilient network design. IEEE 1588 PTP, combined with IEC 61850-9-3 and IEEE C37.238 profiles, ensures precise time synchronisation across protection and control systems. MMS/IEC 61850-90-4 support and an HTML5 management interface simplify SCADA integration and monitoring.
With hardened mechanics, extended temperature tolerance, and full IEC 61850-3/IEEE 1613 certification, the MDS-G4020-T is the ideal choice for substations, utilities, and industrial automation projects requiring modular Gigabit switching with maximum reliability.
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 20 Port Layer 2 Gigabit Modular Managed Ethernet Switch
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MDS-G4020-T
20 Port Layer 2 Gigabit Modular Managed Ethernet Switch
A world leading company in critical two-way wireless communications systems used by public safety and government organisations required the design of an ultra-reliable industrial computer to monitor and control remote broadcast sites nationwide.