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12-port managed switches – 8 x 10/100Base-T(X) + 4 x 1G SFP/Combo – optional 8-port IEEE 802.3bt PoE (90 W/port) – Turbo Ring/Chain < 20 ms* – RSTP/STP – MXstudio – IEC 62443-4-2 – LV/HV/PoE power – -10°C to 60°C / -40°C to 75°C (-T)
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 EDS-4012 Series delivers compact, Layer 2 switching for control cabinets and edge backbones, combining eight 10/100Base-T(X) access ports with four 1-gigabit uplinks. Choose 4 x SFP (EDS-4012-4GS) for fibre flexibility or 4 x combo (EDS-4012-4GC) to mix copper and SFP per port. For powered devices, EDS-4012-8P-4GS models add eight IEEE 802.3af/at/bt PoE ports delivering up to 90 W per port, ideal for multi-sensor cameras, wireless APs and edge computers.
High availability is built-in. Turbo Ring and Turbo Chain provide sub-20 ms recovery across 250 switches (< 50 ms with 1G links), with RSTP/MSTP, MRP and LACP adding standards-based redundancy and aggregation. Management is streamlined via MXstudio, plus a full toolkit: SNMPv1/v2c/v3, LLDP, RMON, syslog, SPAN/RSPAN, fibre check, DHCP server/client and port security. OT integration includes EtherNet/IP, Modbus TCP and PROFINET Device, while hardware-based IEEE 1588v2 PTP supports utility and substation time profiles.
Cyber security aligns with IEC 62443-4-2 Security Level 2, featuring HTTPS/SSH, 802.1X, ACLs, DHCP snooping, storm control, MAC protections and strong login policies. Switch resources include a 16K MAC table, 1 MB packet buffer, 9,216-byte jumbo frames, 4 QoS queues, 256 VLANs and IGMP snooping/querier.
Power options match your site: LV models offer dual 12/24/48 VDC inputs; HV models accept single 110/220 VDC/VAC; PoE SKUs are available as LVA (48 VDC) or LVB (12/24/48 VDC) with generous PoE budgets. The IP40 metal enclosure (55 × 140 × 120 mm) supports DIN-rail or wall mounting. Standard units operate -10 to 60°C; -T variants operate -40 to 75°C. Certifications include EN 50121-4, IEC 61850-3/IEEE 1613, maritime approvals (selected models) and hazardous-location ratings on LV/PoE variants.
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 IEC 62443 Managed Industrial Ethernet Switch
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Select the products of this series that you wish to request quantity or project pricing, or lead time information for:
EDS-4012-4GC-HV-T
12 Port IEC 62443 Managed Industrial Ethernet Switch – 8x Fast Ethernet RJ45 Ports – 4x Gigabit SFP/RJ45 Combo Ports – 88V to 300V DC or 85V to 264V AC Power Input – Extended Wide Temperature Operation
EDS-4012-4GS-HV-T
12 Port IEC 62443 Managed Industrial Ethernet Switch – 8x Fast Ethernet RJ45 Ports – 4x Gigabit SFP Ports – 88V to 300V DC or 85V to 264V AC Power Input – Extended Wide Temperature Operation
EDS-4012-4GC-HV
12 Port IEC 62443 Managed Industrial Ethernet Switch – 8x Fast Ethernet RJ45 Ports – 4x Gigabit SFP/RJ45 Combo Ports – 88V to 300V DC or 85V to 264V AC Power Input – Wide Temperature Operation
EDS-4012-4GC-LV
12 Port IEC 62443 Managed Industrial Ethernet Switch – 8x Fast Ethernet RJ45 Ports – 4x Gigabit SFP/RJ45 Combo Ports – 9.6V to 60V DC Redundant Power Input – Wide Temperature Operation
EDS-4012-4GC-LV-T
12 Port IEC 62443 Managed Industrial Ethernet Switch – 8x Fast Ethernet RJ45 Ports – 4x Gigabit SFP/RJ45 Combo Ports – 9.6V to 60V DC Redundant Power Input – Extended Wide Temperature Operation
EDS-4012-8P-4GS-LVA
12 Port IEC 62443 Managed Industrial Ethernet Switch – 8x Fast Ethernet RJ45 Ports – 4x Gigabit SFP Ports – 44V to 57V DC (>52V DC for PoE+) – Wide Temperature Operation
EDS-4012-8P-4GS-LVA-T
12 Port IEC 62443 Managed Industrial Ethernet Switch – 8x Fast Ethernet RJ45 Ports – 4x Gigabit SFP Ports – 44V to 57V DC (>52V DC for PoE+) – Extended Wide Temperature Operation
EDS-4012-8P-4GS-LVB
12 Port IEC 62443 Managed Industrial Ethernet Switch – 8x Fast Ethernet RJ45 Ports – 4x Gigabit SFP Ports – 12V to 57V DC (>52V DC for PoE+) – Wide Temperature Operation
EDS-4012-8P-4GS-LVB-T
12 Port IEC 62443 Managed Industrial Ethernet Switch – 8x Fast Ethernet RJ45 Ports – 4x Gigabit SFP Ports – 12V to 57V DC (>52V DC for PoE+) – Extended Wide Temperature Operation
EDS-4012-4GS-HV
12 Port IEC 62443 Managed Industrial Ethernet Switch – 8x Fast Ethernet RJ45 Ports – 4x Gigabit SFP Ports – 88V to 300V DC or 85V to 264V AC Power Input – Wide Temperature Operation
EDS-4012-4GS-LV
EDS-4012-4GS-LV-T
12 Port IEC 62443 Managed Industrial Ethernet Switch – 8x Fast Ethernet RJ45 Ports – 4x Gigabit SFP Ports – 9.6V to 60V DC Redundant Power Input – Extended Wide Temperature Operation
The engineers who look after the Bakerloo and Metropolitan signalling and control room systems wanted to upgrade the control room display systems with new computers in order to replace aging 19" rack PCs with smaller form factor fanless computers.