8-Port EN 50155 Certified Railway IP67 WATERPROOF MANAGED Gigabit PoE SWITCH

• Up to 8 10/100/1000 BASE-T(X) ports, M12 connector

• Up to 4 or 8 802.3af or 802.3at complaint PoE ports

• EN50155, EN50121-4 and UL 61010-2-201 certified

• Redundant power input, DC or High Voltage DC

• Ruggedized IP67 aluminum enclosure

• Works from -40°C~75°C

• 2x Relay outputs, 5-pin M12 A-Coding

• Profinet Conformance Class B Compatible

•Ethernet/IP Compatible

Atop’s EMG8508 IP67-rated Railway-compliant Ethernet switch is the best solution for providing high-speed Gigabit connectivity in bayside or carriage side Railway applications. Its rugged, aluminum enclosure can effectively protect the Switch core in any environment.

The 8-M12 Connectors Gigabit ports can supply up to 30W of PoE Power (802.3af or 802.3at) to your PoE device providing an overall maximum budget of 240W. This makes EMG8508 the ideal solution for on-board or off-board surveillance by simplifying the wiring where it’s difficult, risky and expensive to introduce new elements.

The embedded redundant-power supply input provides a reliable and failure-proof safety mechanism to minimize down-times. EMG8508 comes in either redundant Low-Voltage DC power input (12~57 VDC, 47~57 VDC for PoE models) or in redundant HighVoltage DC power input (50~145 VDC). Each power module, including a Relay-output alarm, uses a S-coding M12 connector that makes EMG8508 ideal and simple for engineers setting up a Fault-Alarm System.

Its IP67 housing protection, combined with a wide operating temperature of -40 to 75°C and wall mounting capacities make it suitable to most Railway applications in harsh environments or industrial filed applications

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Technical Specifications
Model NameEMG8508
Switch Properties
Priority Queues8
VLAN Table4096
MAC-Based VLAN512
VLAN ID RangeVID 1 to 4094
Trunk Group4
Static IGMP Groups128
Dynamic IGMP Groups256
MAC Table Size16k
Packet Buffer Size1.5 MB
Jumbo Frame9216 Byte
StandardsIEEE 802.3 for 10BaseT
IEEE 802.3u for 100BaseT(X)
IEEE 802.3ab for 1000BaseT(X)
IEEE 802.3z for 1000BaseX
IEEE 802.3af / 802.3at for Power over Ethernet
IEEE 802.3x for Flow Control, back pressure flow control
IEEE 802.1d-2004 for Spanning Tree Protocol
IEEE 802.1w for Rapid Spanning Tree Protocol
IEEE 802.1s for Multiple Spanning Tree Protocol
IEEE 802.1Q for VLAN Tagging
IEEE 802.1P for Class of Service
IEEE 802.1X for Authentication
IEEE 802.3ad for Port Trunk with LACP
IEEE 802.3az for Energy Efficient Ethernet
ProtocolsIPv4, IPv6, IGMPv1/v2/v3, IGMP Snooping,GARP,GMRP, GVRP, SNMPv1/
v2c/v3, SNMP Inform, ICMP, Telnet, SSH, DHCP Server/Relay/Client, DHCP
Option 66/67/82, BootP, RARP, TFTP, NTP Server/Client, SNTP, SMTP, SMTP
(Gmail), RMON, HTTP, HTTPS, Syslog, MRP (Client), LLDP, IEEE 1588 PTP V1/
V2, IEEE 1588 Hardware Transparent Clock, 802.1x, EAP, RADIUS, TACACS+,
Mirror port, QoS, ACL, Serial Console, U-Ring, STP, RSTP, MSTP, Redundancy
Compatible Ring
Automation ProfilesProfinet, Ethernet/IP, Modbus/TCP
RFC 1157, RFC 1213, RFC 1215, RFC 1493, RFC 1643, RFC 1757, RFC 2011,
RFC 2012, RFC 2013, RFC 2233, RFC 2571, RFC 2742, RFC 2819, RFC 2863,
RFC 3411, RFC 3412, RFC 3413, RFC 3414, RFC 3415, RFC 2674
Input Voltage50~145 VDC for High voltage product
12~57 VDC for Non-PoE models
45~57 VDC for 802.3af mode /51~57 VDC for 802.3at mode
Input Current/Power (System)

Input Current (with PoE, full loading)
50 – 145 VDC, 0.27A max. , 13.5W (For High voltage Models)
12 – 57 VAC, 1.19A max. , 14.28W (For Non-PoE Models)
45 – 57 VDC, 3.08A max. , 138.6W (PoE 802.3af Mode, 8-ports)
51 – 57 VDC, 5.03A max. , 256.53W (PoE 802.3at Mode. 8-ports)
Power input2 x S-Coding M12 connectors (4 Pin)
Reverse Polarity ProtectionYes
LED IndicatorsPWR1, PWR2, Alarm, Ethernet Act/Link, SFP Link, PoE, Ring
Ethernet Ports8 10/100/1000BASE-T(X) auto negotiation speed –M12 connector
ConsoleRS232 (A-coding M12 connector)
Relay Output2 relay outputs with current carrying capacity of 1A @ 24 VDC
(through A-coding M12 connector)
Fiber Optics PortsNo
Physical Characteristics
HousingIP67 protection according to EN 60529
Dimension (W x H x D) (mm)216 x 232 x 72
InstallationWall-mount (Optional Din-Rail Kit)
Environmental limits
Operating  Temperature
Storage Temperature
Ambient Relative Humidity
-40°C~75°C  (-40°F~167°F)
-40°C~85°C  (-40°F~185°F)
5%~95%, 55°C (Non-condensing)
SafetyEN 60950-1:2006, UL/IEC(CB) 61010-2-201
EMCFCC Part 15, Subpart B, Class A
EN 55032, EN 55024, EN 61000-3-2, EN 61000-3-3, EN 61000-6-2, EN 61000-6-4,
IEC 61000-4-2ESDContact Discharge
Air Discharge
IEC 61000-4-3RSEnclosure Port10(V/m), 80-1000MHz3
IEC 61000-4-4EFTAC Power Port
DC Power Port
Signal Port
IEC 61000-4-5SurgeAC Power PortLine-to Line±1.0KV3
AC Power PortLine-to Earth±2.0KV3
DC Power PortLine-to Line±1.0KV3
DC Power PortLine-to Earth±2.0KV3
Signal PortLine-to Earth±2.0KV3
IEC 61000-4-6CS0.15-80MHz10V rms3
IEC 61000-4-8PFMF(Enclosure)AC 50Hz 10A/m3
IEC 61000-4-11DIPAC Power Port--
ShockMIL-STD-810G Method 516.5
DropMIL-STD-810F Method 516.5
VibrationMIL-STD-810F Method 514.5 C-1 & C-2
Warranty5 years
Ordering information
Model namePart NumberM12 PortsSFP SlotsPoE Ports
Optional Accessories
Model namePart NumberDescription
DIN-Rail Kit70100000000062GDIN Rail accessories with screw
VESA Kit70100000000063GVESA accessories with screw
SDR-75-2450500752240001GDIN RAIL POWER SUPPLY / T;AC 88~264V to 24VDC 3.2A;75W
SDR-240-4850502401480001GDIN RAIL POWER SUPPLY / T;AC 100~240V to 48V DC 5A;240W
SDR-480-4850504801480001GDIN RAIL POWER SUPPLY / T;AC 100~240V to 48V DC 10A;480W
M12 Sealing Cap (Plast)3990079GPlastic sealing cap for unoccupied M12 plugs (1560251)
M12 Sealing Cap (metal)59908571GMetal sealing cap for unoccupied M12 plugs (1430488)
M12 screw plug (Plast)3990078GPlastic Screw Locking for unoccupied M12 sockets (1553129)
M12 screw plug(metal)59908561GMetal Screw Locking for unoccupied M12 sockets (1503302)

Products Brochure

V0.4 CA_EMG8508 v0.4 0.51MB


V 1.3 User Manual 5.32MB

Quick Start Guide

V1.1 EMG8508 Hardware Installation Guide 6.51MB


V1.66 EMG8508/EMG8510 F/W 14.02MB

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