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IEC 61850-3 modular managed rackmount switch – 24× Gigabit copper with PoE+ – 4× Gigabit SFP uplinks – dual 110/220 VDC/VAC inputs – IEEE 802.3bt PoE – 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-PoE-4GS-2HV-T is a fully modular, full-Gigabit managed Ethernet switch designed for industrial networks that demand both high bandwidth and robust Power-over-Ethernet capabilities. Offering 24 copper Gigabit ports with IEEE 802.3af/at/bt PoE up to 90 W per port, plus 4 Gigabit SFP uplinks, it delivers both power and connectivity for power-hungry devices in mission-critical environments.
Built for reliability in substations, wayside railway systems, and large-scale factory automation, the switch features dual 110/220 VDC/VAC inputs for redundant power protection. Certified to IEC 61850-3 and IEEE 1613, it withstands extreme EMI and ensures uninterrupted performance in harsh power utility environments.
Its robust redundancy features include Moxa’s Turbo Ring and Turbo Chain with <20 ms recovery for up to 250 devices, as well as standards-based STP, RSTP, and MSTP. Integrated cybersecurity aligned with IEC 62443-4-2 includes secure boot, encrypted management via HTTPS/SSH, ACLs, MAC authentication bypass, port lock, and RADIUS/TACACS+ centralised access control.
The switch offers advanced PoE management functions, including per-port scheduling, diagnostics, power budgeting, and PD failure auto-recovery. It also supports QoS for deterministic traffic, VLAN for network segmentation, IGMP snooping for multicast filtering, and IEEE 1588v2 PTP for precise time synchronisation across automation systems.
With modular support for RM-G4000 expansion modules, an IP30 rackmount chassis, and an extended -40 to 75°C operating range, the RKS-G4028-PoE-4GS-2HV-T is a future-ready, highly reliable industrial backbone switch designed for demanding PoE-enabled applications.
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 – PoE – 4x Gigabit SFP Ports – Redundant 2x 110V to 220V AC Input
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RKS-G4028-POE-4GS-2HV-T
28 Port Gigabit Modular Managed Ethernet Switch – PoE – 4x Gigabit SFP Ports – Redundant 2x 110V to 220V AC Input
A customer in the nuclear sector wished to replace the rack computers at heart of their control system, as critical system components had gone out of support. The control system itself forms part of an essential cog in the nuclear supply chain, and is deployed in numerous locations around the world.