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IEC 61850-3 modular managed rackmount switch – 24× Gigabit copper – 4× Gigabit RJ45 uplinks – dual 110/220 VDC/VAC inputs – IEC 62443 cybersecurity – 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 RKS-G4028-4GS-HV-T brings fibre-first flexibility to mission-critical backbones with four fixed 1G SFP uplinks and three expansion slots to build up to 28 Gigabit interfaces. Choose copper, SFP, or FX modules to align with field distances, EMI exposure, and migration timelines. An isolated 110/220 VDC/VAC supply simplifies integration in substation and rail cabinets, while fanless IP30 construction and -40 to 75°C rating ensure longevity outdoors and on the plant floor.
IEC 61850-3/IEEE 1613 compliance and high EMC immunity protect traffic against surges and conducted/radiated noise. Hardware 1588v2 PTP meets strict timing requirements for protection and synchronisation. For resilience, Turbo Ring and Turbo Chain enable <20 ms convergence at scale, with STP/RSTP/MSTP, LACP, Loop Protection, and Dual-Homing expanding design options.
Security adheres to IEC 62443-aligned best practices: secure boot, 802.1X, RADIUS/TACACS+, SSH/HTTPS, ACLs, sticky MAC, MAB, rate limits, and login policies. Determinism is preserved with eight queues of hardware QoS, DSCP, VLAN/GVRP, and multicast control via IGMP Snooping/Querier.
Deployment and operations are streamlined through a rich toolset—web GUI, CLI, SNMPv1/v2c/v3, RMON, LLDP, Syslog, SFTP/TFTP—and alarm relays. Optional ABC-02/03 devices accelerate backup/restore and firmware updates; USB/MicroSD provide local storage for logs/configs.
From bay-to-bay fibre aggregation to resilient campus rings, the RKS-G4028-4GS-HV-T delivers fibre-centric uplinks, HV power readiness, and modular expansion to anchor modern IEC 61850 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 28 Port Gigabit Modular Managed Ethernet Switch – 4x Gigabit SFP Ports – 110V to 220V AC Input
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RKS-G4028-4GS-HV-T
28 Port Gigabit Modular Managed Ethernet Switch – 4x Gigabit SFP Ports – 110V to 220V AC Input
Our customer was looking for ways to improve efficiency and reliability, and reduce operation costs and overheads for their manufacturing facility. The initial step in this transformation was to add additional monitoring and measurements to several areas of their facility to allow the collection of usage data from older machinery for analysis. The machinery to be analysed would be located in many areas of the complex, with some sitting in concrete outbuildings far from the source of the main network.