Moxa 28 Port Gigabit Modular Managed Ethernet Switch – 4x Gigabit RJ45 Ports – 110V to 220V AC Input

RKS-G4028-4GT-HV-T
£2,718.00

IEC 61850-3 modular managed rackmount switch – 24× Gigabit copper – 4× Gigabit RJ45 uplinks – 110/220 VDC/VAC input – IEC 62443 cybersecurity – Extended wide -40 to 75°C operation

0 in stock – available to order on request.

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.

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The RKS-G4028-4GT-HV-T is a high-availability, full Gigabit managed switch built for substation and heavy industrial backbones. Four fixed 1G RJ45 uplinks provide immediate aggregation capacity. At the same time, three module slots let you scale to as many as 28 Gigabit interfaces using a mix of copper, SFP fibre, or Fast-Ethernet FX cards. Isolated high-voltage power (110/220 VDC/VAC) simplifies deployment in utility and transportation cabinets, and fanless IP30 construction withstands -40 to 75°C operation.

Engineered to IEC 61850-3 and IEEE 1613, the switch resists severe EMI/EMS, ensuring wire-speed forwarding with hardware 1588v2 PTP for precise time synchronisation across protection, measurement, and automation workloads. Rapid resiliency is delivered via Turbo Ring and Turbo Chain with <20 ms recovery (at 250 nodes), complemented by STP/RSTP/MSTP, Link Aggregation (LACP), Loop Protection, and Dual-Homing/Ring Coupling for flexible topologies.

Security follows IEC 62443 principles with secure boot, 802.1X, RADIUS/TACACS+, HTTPS/SSH, ACLs, MAC authentication bypass, sticky MAC, and policy-driven rate limits. Deterministic delivery is maintained using eight hardware queues, IEEE 802.1p/ quality of service, DSCP, VLAN/GVRP, and IGMP Snooping/Querier for multicast control.

Operational efficiency comes from intuitive management (web/CLI), SNMPv1/v2c/v3 with traps/informs, RMON, LLDP, Syslog, SFTP/TFTP, and event alarm relays. Optional ABC-02/03 media streamlines backup/restore and firmware updates, while MicroSD/USB storage aids logging.

From bay controllers to interlocking and traction systems, the RKS-G4028-4GT-HV-T combines HV power flexibility, modular port growth, and substation-class immunity to anchor mission-critical networks with confidence.

Device Type Managed Switch
Ethernet Ports 28
IP Rating IP30
Ethernet Speed 10/100/1000 Mbps
Input Voltage 110V to 220V DC
Market Certifications IEC 62443-4-2, NEMA-TS2, EN 50121-4, IEC 61850-3, IEEE 1613, FCC, CE, RoHS
Mounting Rack-mount
Warranty 5 years
Operating Temperature -40°C to +75°C

Delivery & Returns

We offer a range of delivery options to suit your needs.

UK Mainland

  • Free next day shipping on all orders over £150 (UK Mainland only)
  • Next day delivery - £12 (UK Mainland only)
  • Postcode Exclusions: ZE, KW15+ PO 30, JE, HS, GY, TR, IM, AB31+, KW 1-14, FK19+, PA20+, IV, PH

Northern Ireland & Highlands

  • Northern Ireland (2 business day delivery) - from £40 (UKIMS required for NI)
  • Highlands delivery (up to 3 business days) - from £30

Ireland

  • Ireland Economy (2-5 business days) - from £35
  • Ireland Priority (1-3 business days) - from £50

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.

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Moxa 28 Port Gigabit Modular Managed Ethernet Switch – 4x Gigabit RJ45 Ports – 110V to 220V AC Input

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    28 Port Gigabit Modular Managed Ethernet Switch – 4x Gigabit RJ45 Ports – 110V to 220V AC Input

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