ATOP EHG7508 Industrial Managed Ethernet Switch
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The ATOP EHG7508-8PoE is an industrial managed Gigabit switch with eight 10/100/1000BASE-T(X) RJ45 ports, all PoE, delivering up to 30 W per port within a 240 W device power budget. It mounts on DIN rail in an IP30 aluminium housing, works from -20°C to +70°C on dual redundant power inputs, and is NEMA TS-2 and EN50155 certified.
PoE Ports and Power Budget8 × 802.3af/at PoE ports, max 30 W per port, up to 240 W device budget
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Description
The EHG7508 Series is an Industrial Grade Managed Gigabit Ethernet PoE Switch. Designed to provide a highly reliable, fault-tolerant, extremely fast network connection in a harsh environment, EHG7508 Series equips two terminal blocks to provide dual redundant power inputs with Reverse Polarity Protection and allows field engineers to build up a stand-alone fault alarm system. EHG75XX family is UL, CE, FCC and NEMA TS-2 certified, allowing the use in Traffic Control Applications.
Within its compact DIN-Rail housing design, the EHG7508 series allows you to choose between different port combinations: 10/100/1000 BASE-T(X) RJ45 port, 1000 BASE-X SFP port and IEEE 802.3af/at compliant PoE RJ45. EHG7508 provide, in its 8-PoE-Port Version, up to 240W power budget.
This is the right choice if you want to set up a reliable network environment with its intelligent features and keep equipment connected all the time, even in case of temporary network breakdowns through RSTP, ERPS Rings and MRP (client) redundancy. Being multiple Compatible Rings also supported, ATOP can be the best choice to have a painless enhancement of an existing infrastructure that doesn’t jeopardize network Topology and existing working pattern. To prevent network intrusions, it is necessary to have a good accessing control mechanism that can identify, authenticate and authorize users. EHG7508 support user account, password policy, and authentication interface managements functions that comply with IEC62443 standard.
Being Profinet CC-B v2.33 certified, this switch Series is Automation and IoT ready. Profinet allows wired and wireless combinations for an array of connectivity options, providing a more effective backbone for your automation operations.
Having undergone environmental testing to ensure reliable performance under a variety of power supply conditions, such as voltage variations, power interruptions, and supply changeovers, this switch Series is fully EN50155-certified for today’s demanding railway applications, as well as complying with essential sections of EN50121-4 for ground equipment.
EHG7508 specifications
| RJ45 Ports | 8 × 10/100/1000BASE-T(X), auto negotiation speed, all PoE |
|---|---|
| Fibre (SFP) Slots | None on the -8PoE variant |
| PoE Standard | IEEE 802.3af / 802.3at, max 30 W per port |
| PoE Power Budget | Up to 240 W (8-PoE-port version) |
| Input Voltage | 45-57 VDC for 802.3af mode; 51-57 VDC for 802.3at mode |
| Input Current | Max. 5.1 A @ 51 VDC (8 ports at 30 W per PoE port) |
| Power Consumption | Max. 260 W @ 51 VDC (802.3at, 30 W PoE per port for 8 ports) |
| Power Connector | 5-pin 5.08 mm lockable terminal block, dual redundant inputs, reverse polarity protection |
| Redundancy Protocols | ITU-T G.8032 ERPS, STP, RSTP, MSTP, MRP (Manager/Client), Compatible Ring/Chain, U-Ring |
| Automation Profiles | Profinet v2.33 CC-B certified (GSDML provided); Modbus/TCP device status registers |
| Time Synchronisation | IEEE 1588v2 TC hardware (ns accuracy), IEEE 1588v1/v2 OC/BC software, NTP server/client, SNTP |
| MAC Table Size | 16K |
| Packet Buffer Size | 1.5 MB |
| Jumbo Frame | 9216 Byte |
| VLAN | 4096 VLAN table, VID 1 to 4094, MAC-based VLAN 512, 8 priority queues |
| Console | RS232 (RJ45 connector) |
| Relay Output | 2 relay outputs, 1 A @ 24 VDC |
| Housing | IP30 aluminium housing |
| Dimensions (W × H × D) | 54 × 113 × 145 mm |
| Weight | 800 g |
| Installation | DIN-Rail; wall mount (optional kit) |
| Operating Temperature | -20°C to +70°C (-4°F to +158°F) |
| Storage Temperature | -40°C to +85°C |
| Ambient Relative Humidity | 5% to 95% (non-condensing test @55°C) |
| Approvals | UL 60950-1 2nd Ed./CSA C22.2/CB, FCC Part 15 Class A, EN 55032/55024, NEMA TS-2, EN50155/EN50121-4, RoHS II |
| Security | Features based on IEC 62443-4-2 |
| MTBF | 16.89 years |
Specifications taken from the manufacturer datasheet.
Which version do I need?
This is a family datasheet covering EHG7504 and EHG7508. The -8PoE ordering code is 1P1EHG75080003G, described as 8P*1000TX RJ45/PoE — eight copper Gigabit PoE ports and no SFP slots. Sibling variants split the ports differently: EHG7508 (8 RJ45, no PoE), EHG7508-4PoE-4SFP, and EHG7508-4SFP (4 RJ45 + 4 SFP).
Typical applications for the EHG7508
- Powering IP cameras and access points on a factory or site network
- Traffic control cabinets (NEMA TS-2 certified)
- Railway and trackside ground equipment (EN50155 / EN50121-4)
- Profinet automation cells needing a certified managed switch
- Redundant ring backbones using ERPS or MRP
- DIN-rail control panels operating from -20°C to +70°C
Complete the stack
Products that work with this one — connect it, power it, and get it online.
EHG7508 — frequently asked questions
How many ports does the EHG7508-8PoE have, and are they all PoE?
Eight 10/100/1000BASE-T(X) RJ45 ports, all of them PoE — ordering code 1P1EHG75080003G, described as 8P*1000TX RJ45/PoE. This variant has no SFP slots. If fibre is needed, the EHG7508-4PoE-4SFP or EHG7508-4SFP variants combine copper and 1000BASE-X SFP.
What is the PoE power budget?
Up to 240 W across the device in the 8-PoE-port version, with a maximum of 30 W per port under IEEE 802.3af/802.3at. Maximum system power consumption is 260 W at 51 VDC with 30 W on all eight ports; at 802.3af with 15.4 W per port it is 139.5 W at 45 VDC.
What power supply does it need?
45-57 VDC for 802.3af mode and 51-57 VDC for 802.3at mode, on a 5-pin 5.08 mm lockable terminal block with two redundant inputs and reverse polarity protection. Maximum input current is 5.1 A at 51 VDC. ATOP lists the SDR-240-48 (240 W/5 A DIN-rail 48 VDC) as an optional accessory.
Which ring and redundancy protocols are supported?
ITU-T G.8032 ERPS, STP, RSTP, MSTP, MRP (Manager and Client), Compatible Ring/Chain and U-Ring, so it can be added to an existing ring topology without changing it.
Is it approved for traffic and rail installations?
Yes. It is NEMA TS-2 certified for traffic control applications and EN50155 / EN50121-4 certified for railway and trackside ground equipment, alongside UL, CE and FCC. Security features are based on IEC 62443-4-2 and quoted MTBF is 16.89 years.
Does it support Profinet?
Yes, it is Profinet CC-B v2.33 certified with a GSDML file provided, and Modbus/TCP device status registers are available.
How much does the ATOP EHG7508 Industrial Managed Ethernet Switch cost in the UK?
The ATOP EHG7508 Industrial Managed Ethernet Switch is supplied to order and priced on application. Send a quote request and we confirm the price and lead time in writing, usually the same working day. No account is needed. Indiott is a UK distributor invoicing with VAT (PSI Technologies Ltd, VAT GB 730 2340 83).
What is the lead time and delivery cost for the ATOP EHG7508 Industrial Managed Ethernet Switch?
The ATOP EHG7508 Industrial Managed Ethernet Switch is supplied to order. We confirm the lead time in writing with your quote, before you commit to anything. UK delivery is a flat £14.25 per order ex VAT, whatever the weight or how many items you order. We ship to GB and the EU and provide a VAT invoice with every order.






