Substation Certified Switches



Hardware Features

• 8 x 10/100/1000 PoE
• 2 x FX/GbE SFP
• IP30 Aluminum housing

Product Highlights

• IEEE 1613 and IEC 61850-3 Certifications for safe and reliable substation operations
• EMS, ESD, Surge & Burst Protection
• Shock, Freefall and Vibration Proof
• PoE+ IEEE 802.3af/at standards
• 124 W power budget @24VDC / 240 W power budget @48VDC
• Operating temperature range between -40°C to 75°C
• MDI/MDI-X for plug-and-play
• Xpress Ring connectivity for a scalability
• Redundant Power Input & Relay Output Alarm

SEN-9428P-24V-SS is an unmanaged substation certified PoE+ switch with eight 10/100/1000Base-T ports and 4 Gigabit SFP slots. It is built with industrial-grade components, enclosed in IP30 aluminum casing, and designed to withstand vibration, shock, free fall, and temperatures ranging from -40°C to 75°C. 


Robust Electrical and Electromagnetic Safeguard
Engineered to withstand EMI (electromagnetic interference), ESD (electrostatic discharge), power surge, over voltage, over current, and reverse polarity.
High-Power Budget for PoE Devices
IEEE 802.3at standard PoE+ with 240W total power budget for the whole system and various plug-n-play PoE devices.
Redundant Power System
Powered simultaneously with two different power sources, e.g. SDR-480P-48 power supply and IRA-120/IRA-160 DIN-rail mountable AC to DC power adapter, with power failure alarm.
Fiber Connectivity with Dual SFP Ports
Dual Gigabit SFP ports for expansion of fiber-based daisy chain topology. 

IEEE 802.3 10BASE-T
IEEE 802.3u 100BASE-TX/FX
IEEE 802.3ab 1000BASE-T
IEEE 802.3z 1000BASE-SX/LX
IEEE 802.3x Flow Control
IEEE 802.3af Power over Ethernet
IEEE 802.3at Power over Ethernet Plus
IEEE 802.3az Energy Efficient Ethernet (EEE)

Ports 8 x 10/100/1000BASE-T PSE Ports
2 x 100FX/Gigabit SFP Slot
DIP Switch Power voltage drop alarm setting (PWR & RPS),
Broadcast strom control setting (STORM),
Port-based QoS setting (QoS on P1 & P2),
Fiber port speed setting (100FX on P9 & P10)
LED Panel PWR, RPS, ALM, SFP, PoE, 1000, LNK/ACT

Input Voltage 24V~57VDC
Power Consumption System:13W
PoE Power Budget : 240W@48V or 124W@24V
Alarm Relay One relay output with current carrying capacity of 1 A @ 24V DC

Mechanical and Environment
Housing Aluminum Case (IP30 protection)
Mounting DIN-Rail, Wall Mount (Optional)
Operating Temperature -40°C~75°C
Storage Temperature -40°C~85°C
Operating Humidity 10 to 95% RH (non-condensing)
Storage Humidity 5 to 95% RH (non-condensing)
Dimension (WxHxD) 50x162x122mm (1.97x6.38x4.8 inch)
Weight 830g



Volktek continues to develop client-valued functions. Please call us for more details.


Scalable Ethernet for IP Surveillance

The SEN-9428P-24V-SS is compatible with 10/100/1000Mbps through RJ45 transceivers to guarantee a strong, stable connection of Ethernet, Fast Ethernet or Gigabit Ethernet, providing flexible deployment options to satisfy harsh and much-demanding surveillance requirements.

File name Version Download
SEN-9428P-24V-SS Datasheet 1.0
SEN-9428P-24V-SS EDM 1.0
SEN-9428P-24V-SS Photo 1.0
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