ATOP SE5908A Rugged Serial to Ethernet Device Server
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SE5908A is an 8-port IEC 61850-3 certified rack-mount industrial serial device server. It provides eight RS-232/RS-422/RS-485 ports at 1,200 to 921,600 bps and six Fast Ethernet interfaces, either RJ45 or SFP, with redundant 24-48 VDC or 100-240 VAC/100-370 VDC power. Choose it over the 16-port SE5916A when eight serial ports are enough in a substation.
Serial ports8 (SE5908A)
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Description
8‑Port IEC61850‑3 Certified Industrial Rack‑Mounted Secure Serial Device Server.
The Industrial Serial Device Server SE5908A is a high-profile, high performance wide temperature gateway for Ethernet (TCP/IP) and serial signal communications; allowing almost any serial device to be connected to a new or existing Ethernet network. By encapsulating serial data and transporting it over Ethernet, it offers full-duplex and bi-directional data seamlessly between the serial port and the Ethernet network.
SE5908A specifications
| Serial ports | 8 (SE5908A) |
|---|---|
| Serial mode | RS-232/422/485 software selectable |
| Serial connector | D-Sub9 (DB models, supporting only 5-pin RS-232 mode) or 5.08mm 5-pin terminal block (TB models) |
| Serial port isolation | 3 kV isolation (SiS version only) |
| Baud rate | 1,200-921,600 bps software selectable |
| Data bits / stop bits | 5, 6, 7, 8 software selectable / 1, 2 software selectable |
| Parity | None, Odd, Even, Mark, Space |
| Flow control | None, Xon/Xoff, RTS/CTS (RS-232 only) |
| Ethernet ports | RJ45 x 6 (RJ45 version) or SFP x 6 (SFP version) |
| Ethernet standards | IEEE 802.3 10BaseT, IEEE 802.3u 100BaseT(X) (RJ45), IEEE 802.3u 100Base-FX (SFP) |
| Substation certification | IEC 61850-3 / IEEE 1613 |
| Protocols | IPv4, ICMP, TCP, UDP, DHCP Client, SNMPv1/v2c/v3, HTTP, HTTPS, Telnet, RFC2217, 802.1D-2004 RSTP, SMTP/TLS |
| Security | OpenVPN Client/Server and IPsec (host-to-host or host-to-side) up to 37.9Mbps VPN throughput, plus PPTP |
| Link modes | TCP Client (single destination or VirtualCOM); TCP Server (4 connections); UDP up to 4 IP ranges |
| Rated supply voltage | Redundant 24-48 VDC or redundant 100-240 VAC / 100-370 VDC (HV series) |
| Input voltage range | Redundant 19.2-52.8 VDC or redundant 85-264 VAC / 100-370 VDC (HV series) |
| Input current | 0.73 A @ 24 VDC; 0.35 A @ 100 VAC; 0.20 A @ 100 VDC |
| Power consumption | Approximately 20 W |
| Power redundancy | Yes; 10-pin terminal block, reverse polarity protection |
| Operating temperature | -40°C to 80°C (-40°F to 176°F) |
| Ambient relative humidity | 5%-95%, 55°C (non-condensing) |
| Housing | IP30 SPCC housing |
| Dimensions (W x H x D) | 440.6 x 44 x 309 mm (1U rack-mount) |
| Weight | 4 kg |
| Installation | 19" rack mount (rack-mount kit included) |
| Warranty | 5 years |
Specifications taken from the manufacturer datasheet.
Which version do I need?
Documented suffixes: no suffix gives 10/100BASE-T(X) RJ45 uplinks, -6SFP gives six 100BASE-FX SFP slots; -TB replaces the DB9 serial connectors with 5-pin terminal blocks; -Sis adds 3 kV serial isolation; -HV takes high-voltage 100-240 VAC or 100-370 VDC input instead of 24-48 VDC. Note that DB models support only 5-pin RS-232 mode, so RS-422/RS-485 wiring needs a -TB or -Sis model. An SDK programmable version is available on request from ATOP.
Typical applications for the SE5908A
- IEC 61850-3 electrical substation automation
- Utility SCADA sites needing redundant power feeds
- Rack-mounted serial-to-Ethernet aggregation for IEDs and protection relays
- Mission-critical installations requiring -40°C to 80°C operation
- Fibre-linked serial connectivity in high-EMI switchyards using the 6SFP version
- Secure remote access to serial equipment over OpenVPN or IPsec
Complete the stack
Products that work with this one — connect it, power it, and get it online.
SE5908A — frequently asked questions
Is the SE5908A certified for power substations?
Yes. The datasheet lists IEC 61850-3 / IEEE 1613 among its approvals, alongside EN 55032 Class A, EN 61000-6-2 and EN 61000-6-4, and it is described as suitable for setting up into IEC 61850-3 substations.
What is the difference between the SE5908A and the SE5916A?
Serial port count: the SE5908A has 8 ports and the SE5916A has 16. Both share the same 440.6 x 44 x 309 mm 1U chassis, six Fast Ethernet interfaces, redundant power and -40°C to 80°C operating range.
Can the DB9 model do RS-422 or RS-485?
The connector row states that DB models support only 5-pin RS-232 mode. If you need RS-422 or RS-485 wiring, order a -TB model with 5.08mm 5-pin terminal blocks, or a -Sis model which also adds 3 kV isolation.
What power inputs are available?
Redundant 24-48 VDC (19.2-52.8 VDC range) or, on HV models, redundant 100-240 VAC / 100-370 VDC (85-264 VAC range), both on a 10-pin terminal block with reverse polarity protection. Consumption is approximately 20 W.
How many Ethernet ports does it have, and can they be fibre?
Six. The standard version uses six 10/100BASE-T(X) RJ45 ports; the -6SFP version uses six 100BASE-FX SFP slots. Compatible 155Mbps SFP transceivers (multi-mode 2km, single-mode 30km) are listed as accessories.
How much does the ATOP SE5908A Rugged Serial to Ethernet Device Server cost in the UK?
The ATOP SE5908A Rugged Serial to Ethernet Device Server 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 SE5908A Rugged Serial to Ethernet Device Server?
The ATOP SE5908A Rugged Serial to Ethernet Device Server 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.








