G301 - Unmanaged 4-Port Rugged Industrial Ethernet Switch with PoE (Product Discontinued)

Unmanaged Industrial Ethernet Switch

The G301 is an unmanaged 3U Ethernet switch implemented as a CompactPCI Serial board. It occupies one peripheral slot, using a 4 HP front panel sporting 4 Gigabit Ethernet ports on RJ45 connectors. Options include M12 front connectors and a P6 connector for the rear I/O Ethernet signals from the board's fifth Gigabit Ethernet port.

Reliable Communication System Component

The G301 supports full-duplex and half-duplex operation with auto-negotiation and high-speed non-blocking store-and-forward switching. The switch is fault tolerant and restores itself on its own. Its built-in test mechanisms make the G301 an even more reliable component in the communication system.

In addition, the switch can act as Power over Ethernet (PoE) Power Sourcing Equipment (PSE), supplying other devices on all ports with up to 7W (class 1, 2) per port for power according to IEEE 802.3 Section 2 - Type 1, class 1 and 2 (formerly known as IEEE 802.3af). The maximum power available for one G301 is limited to 28 W, according to CPCI-S.0 specification.

Compliant to Railway Standards

The board is specifically designed for rugged mobile communication systems. It is thus for example fully compliant with the EN 50155 railway standard, screened for a -40°C to +85°C operation temperature and ready for coating.


  • Unmanaged 4-port rugged Ethernet switch
  • 4 Gigabit Ethernet (front) on RJ45 (M12 optional)
  • Power over Ethernet (PoE) PSE (all ports)
  • LEDs for link and activity status
  • 1 Gigabit Ethernet on rear I/O (optional)
  • -40°C to +85°C (screened)
  • EN 50155 class TX (railways)
  • PICMG CPCI-S.0 CompactPCI Serial peripheral card


Switch Key Features
  • High-speed non-blocking, store-and-forward switching
  • Port configuration: copper, 10/100 and 1000 Mbit/s
  • Auto-negotiation / Auto MDI/MDIX crossover on all ports
  • 8K MAC address lookup table with automatic learning and aging
  • Port-based VLANs
  • Port and Flow Mirroring
Power Over Ethernet
  • PSE (Power Sourcing Equipment)
  • Supported standard: IEEE 802.3 Section 2, Type 1
  • Supply classes: 1, 2
  • Number of powered devices: up to four (up to 28 W total)
Front Interfaces
  • Four RJ45 connectors, 10/100/1000BASE-T, or
  • Four 8-pin M12 connectors, A-coded, 10/100/1000BASE-T
  • Eight link and activity LEDs (two per channel)
Rear Interfaces
  • One Gigabit Ethernet 1000BASE-T port on CompactPCI P1, uplink
  • One Gigabit Ethernet 10/100/1000BASE-T port on CompactPCI P6 (optional)
Backplane Standard
  • Compliance with CompactPCI Serial PICMG CPCI-S.0 Specification
  • Peripheral slot
  • Host connection:
    • One PCI Express x1 link, PCIe 1.x
    • Used as Ethernet switch uplink
Electrical Specifications
  • Supply voltage
    • +12 V (-3%/+5%)
  • Power consumption
    • 6 W approx. (without PoE)
    • 35 W max. (with PoE)
  • Isolation voltage
    • IEE802.3 (2012), Section 1; 9.7 Electrical Isolation - Environment B for 1500 V
Mechanical Specifications
  • Dimensions
    • 3U, 4 HP
  • Weight
    • 162 g (with RJ45 connectors)
    • 188 g (with M12 connectors)
Environmental Specifications
  • Temperature range (operation):
    • -40°C to +85°C
    • Airflow: 1.0 m/s
  • Temperature range (storage): -40°C to +85°C
  • Cooling concept
    • Air-cooled, or
    • Conduction-cooled in MEN CCA frame
  • Relative humidity (operation): max. 95% non-condensing
  • Relative humidity (storage): max. 95% non-condensing
  • Altitude: -300 m to +3000 m
  • Climatic tests according to EN 68068
  • Shock: EN 61373
  • Vibration: EN 61373
  • Conformal coating; optional
MTBF: 211 019 h @ 40°C according to IEC/TR 62380 (RDF 2000)
Flammability (PCBs)
  • UL 94 V-0
  • EN 55022 (radio disturbance)
  • EN 61000-4-2 (ESD Immunity)
  • EN 61000-4-4 (burst)