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EN50155 Unmanaged FE Switches

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EN50155 Unmanaged Fast Ethernet Switch for Vehicle

Ethernet Switch for Vehicle


The ITP-500-67 (ITP-800-67) Series non-managed Fast Ethernet switches provide 5(8)x 10/100Base-TX Fast Ethernet ports. This series of unmanaged Ethernet switches is designed for industrial applications in harsh environments. The ITP-500-67 (ITP-800-67) series switches Ethernet ports utilize M12 connectors to ensure tight, robust connections and guarantee reliable operation against environmental disturbances such as vibration and shock. The ITP-500-67 (ITP-800-67) series Ethernet switches are compliant with EN 50155, covering operating temperature, power input voltage, surge, ESD, vibration, and shock, thus making these switches suitable for industrial applications in vehicle, rolling stock and railways.

Applications - Figure 1 : ITP Series in Railway Application

Ethernet Switch for Vehicle schematic



  • 8-Port 10/100Base-TX Ethernet Switch (ITP-800-67, ITP-800-E67)
  • 5-Port 10/100Base-TX Ethernet Switch (ITP-500-67, ITP-500-E67)
  • Use M12 connector anti vibration and shock for vehicle, rolling stock and railway applications
  • Supports flow control
  • Supports alarm message by relay
  • DIN rail or wall mounting installation
  • Supports broadcast storm protection
  • Supports auto-negotiation and auto-MDI/MDI-X
  • Built in 2 bypass port
  • Redundant dual DC input power 12/24/48VDC (9.6~60VDC)
  • IP67 grade rugged housing for against water, dust, and oil
  • Wide operating temperature -40~75°C
  • UL60950-1, CE, FCC, EN50155 and EN50121-4 for railway certification
  • Industrial Grade EMS, EMI, EN61000-6-2, EN61000-6-4 certified


IEEE Standard:

  • IEEE 802.3 10Base-T Ethernet
  • IEEE 802.3u 100Base-TX Fast Ethernet
  • IEEE802.3x Flow Control and Back Pressure

Switch Architecture:

  • Back-plane (Switching Fabric): 1Gbps (ITP-500-67, ITP-500-E67)
  • Back-plane (Switching Fabric): 1.6Gbps (ITP-800-67, ITP-800-E67)

Data Processing: Store and Forward
Flow Control: IEEE 802.3x flow control, back pressure flow control
Provides Broadcast Storm Protection: Present
MAC Address Table: 1 K
Packet Buffer Size: 448Kbits
Network Connector:

  • 5x M12 D-code Female (ITP-500-67, ITP-500-E67)
  • 8x M12 D-code Female (ITP-800-67, ITP-800-E67)
  • 10/100Base-TX auto negotiation speed
  • Auto MDI/MDI-X function
  • Full/Half duplex
  • Built in 2 bypass ports

Network Cable:

  • 10Base-T: 2-pair UTP/STP Cat. 5e cable; EIA/TIA-568 100-ohm (100m)
  • 100Base-TX: 2-pair UTP/STP Cat. 5e cable; EIA/TIA-568 100-ohm (100m)

Protocols: CSMA/CD

  • Per unit: Power 1 (Green), Power 2 (Green), Fault (Amber)
  • Per port: Link/Active (Green), Speed/100 (Yellow), 10 (Off)

Reverse Polarity Protection: Present for power input
Overload Current Protection: Present
Power Supply: Redundant Dual DC ±12/24/48V (±8.4~60VDC) Input power (ITP-800-67, ITP-800-E67) & DC 12/24/48V (8.4~60VDC) Input power (ITP-500-67, ITP-500-E67)
Power & Alarm Connector: 5 Pin Male A-Code M12
Alarm Relay Contact: Relay outputs with current carrying capacity of 1 A @24VDC, Normal close (NC)
Operating Temperature: -10°C~60°C (ITP-500-67, ITP-800-67); -40°C~75°C (ITP-500-E67, ITP-800-E67)
Operating Humidity: 5% to 95% (Non-condensing)
Storage Temperature: -40°C~85°C
Housing: IP67 grade rugged housing
Weight: 260g (ITP-500); 410g (ITP-800)
Installation Mounting: DIN rail or wall mounting
EMI: FCC Part 15 Subpart B Class A CE, EN 55022 Class A

  • EN 61000-6-2 - Immunity for Industrial environment
  • EN61000-4-2 (ESD) Level 3, Criteria B
  • EN61000-4-3 (RS) Level 3, Criteria A
  • EN61000-4-4 (Burst) Level 3, Criteria B
  • 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
  • EN 61000-4-11 Voltage Dips
  • EN 61000-4-12

Safety: UL60950-1 (Pending)
Railway Traffic: EN50155, EN50121-4
Shock: IEC 61373
Freefall: IEC 60068-2-32
Vibration: IEC 61373
MTBF: 309,668 hours (ITP-500); 303,728 hours (ITP-800)
Warranty: 5 years


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