24 GbE PoE Ethernet switch with 8 dual rated SFP slots


  • Managed Industrial Grade  L2 Gigabit PoE  Switch
  • IEEE 802.3az EEE (Energy Efficient Ethernet)
  • 24x 10/100/1000BaseTX PoE ports, plus 8x 100/1000Base-X SFP ports
  • 400W PoE power budget in total
  • Redundant dual input power 48VDC (44~57VDC)
  • Sophisticated Ethernet Ring Protection Switching (ERPS) for network redundancy
  • μ-Ring redundancy, recovery time <20ms in 250 devices
  • Supports IEEE 1588 PTP V2 for precise time synchronization


IGS-2408SM-24PH is a rackmountable, managed, Industrial Grade, L2 Gigabit PoE (Power over Ethernet) Switch that provides 24x 10/100/1000BaseTX PoE ports, plus 8 dual speed (100/1000Base-X) SFP ports, thus providing up to 32 ports total Ethernet connectivity. 

The PoE features enable power and data to be transferred via a single cable, thereby considerably reducing cabling and electrical wiring expenses. IGS-2408SM-24PH is an ideal solution for applications in Smart City, surveillance, Intelligent traffic control systems (ITS) and production automation applications. The IGS-2408SM-24PH is designed for harsh outdoor cabinet applications, with 4kV surge protection, to ensure the uninterrupted reliability of PoE systems. Isolated power inputs also help to increase system reliability and the availability of your network backbone.

PoE application with IEEE1588 PTP timing


Precision Time Protocol

These units support IEEE1588 PTP, which provides a method to precisely synchronize computers over the Local Area Network.  PTP can synchronise multiple devices to within 100 nanoseconds on a networks which support IEEE-1588.

Green Ethernet

The IGS-2408SM-24PH supports Green Ethernet and  IEEE 802.3az EEE (Energy Efficient Ethernet) management to optimize power consumption.  Cable lengths are automatically measured and power is reduced  for ports with short cable runs. This is especially useful in datacentres and other areas where short cable runs are prevalent.  When a connected device is powered off, the switch port goes into standby mode.

Dimensions and mounting information


Technical Notes

PoE - Power over Ethernet Primer

What is Power over Ethernet ?

Power over Ethernet, commonly abbreviated to PoE, is a technology that enables DC power to be delivered over the same twisted pair copper cabling as the data. This allows end devices such as IP phones, CCTV cameras and wireless access points to receive power across the network and avoids the need to install electrical cabling and a power source at the remote end.


Item Description

IEEE 802.3 10Base-T 10Mbit/s Ethernet
IEEE 802.3u 100Base-TX, 100Base-FX, Fast Ethernet
IEEE 802.3ab 1000Base-T Gbit/s Ethernet over twisted pair
IEEE 802.3z 1000Base-X Gbit/s Ethernet over Fibre-Optic
IEEE 802.1d STP (Spanning Tree Protocol)
IEEE 802.1w RSTP (Rapid Spanning Tree Protocol )
IEEE 802.1s MSTP (Multiple Spanning Tree Protocol)
ITU-T G.8032 / Y.1344 ERPS (Ethernet Ring Protection Switching)
IEEE 802.1Q Virtual LANs (VLAN)
IEEE 802.1X Port based and MAC based Network Access Control, Authentication
IEEE 802.3ac Max frame size extended to 1522Bytes
IEEE 802.3ad Link aggregation for parallel links with LACP(Link Aggregation Control Protocol)
IEEE 802.3af PoE (Power over Ethernet)
IEEE 802.3at PoE+ (Power over Ethernet enhancement)
IEEE 802.3X Flow control for full duplex
IEEE 802.1ad Stacked VLANs, Q-in-Q
IEEE 802.1p LAN Layer 2 QoS/CoS Protocol for Traffic Prioritization
IEEE 802.1ab Link Layer Discovery Protocol (LLDP)
IEEE 802.3az EEE (Energy Efficient Ethernet)


4094 IEEE802.1Q VLAN VID

Switch Architecture

Back-plane (Switching Fabric):64Gbps
(Full wire-speed)

Network Connector

8x 100/1000Base-X SFP socket
Support DDMI
24x 10/100/1000Base-T RJ-45
Support Auto negotiation speed, Auto MDI/MDI-X function
24x IEEE 802.3af /IEEE 802.3at PoE+
End-Span, Alternative A mode.
Maximum 30W per port, 400W PoE power budget in total
RJ45 Pin Assignment:
PoE Positive (V+) : RJ-45 pin 1, 2.
PoE Negative (V-) : RJ-45 pin 3, 6.
Data (1,2,3,6,4,5,7,8)


RS-232 (RJ-45)

Network Cable

UTP/STP Cat.5e cable or above
EIA/TIA-568 100-ohm (100m)

Power Supply

Redundant dual input power 48VDC (44~57VDC)
(Removable terminal block)
(50~57VDC input is recommended for IEEE802.3at PoE+ in 30W applications)

Power Consumption

< 30W @50VDC without PoE load
<445W @50VDC with 400W PoE load

Jumbo Frame

10K Byte

MAC Address Table


Memory Buffer

4M Bytes for packet buffer


Operating Temperature -40 ~ 75°C
Operating Humidity 5% to 95% (Non-condensing)
Storage Temperature -40 ~ 85°C


Rugged Metal, IP30 Protection, Fanless


280x 440 x 44mm (D x W x H)



Installation Mounting

19" rack mount


97,078 Hours (MIL-HDBK-217)


5 years


EMC CE (EN55024, EN55032)
EMI (Electromagnetic Interference) FCC Part 15 Subpart B Class A, CE
Railway Traffic EN50121-4
Immunity for Heavy Industrial Environment EN61000-6-2
Emission for Heavy Industrial Environment EN61000-6-4
EMS (Electromagnetic Susceptibility) Protection Level EN61000-4-2 (ESD) Level 3, Criteria B, EN61000-4-3 (RS) Level 3, Criteria A, EN61000-4-4 (Burst) Level 3, Criteria A, EN61000-4-5 (Surge) Level 3, Criteria B, EN61000-4-6 (CS) Level 3, Criteria A, EN61000-4-8 (PFMF, Magnetic Field) Field Strength:300A/m, Criteria A
Safety UL60950-1, EN60950-1
Surge protection 4KV for RJ45 and SFP ports
Shock IEC 60068-2-27
Freefall IEC 60068-2-32
Vibration IEC 60068-2-6

Ordering Information

Order Code Description
CT-IGS-2408SM-24PHE 24x GbE RJ45 + 8x 100/1000Base SFP with 24x PoE (400W 48VDC) -40~75°C

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