China Rail Case Study

Name of Project: Train Control Network

Customer: China Rail

Application:  Advanced Ethernet-based Train Control Network

Products Used:

HEST12M Series – EN50155 and IEC61375 Compliant Switch Series

HEST12M Series – EN50155 and IEC61375 Compliant Switch Series

 Key Features and Benefits- why Henrich won:

  • Redundant Network Recovery in under 5 ms for Layer 2 and 15 ms for Layer 3
  • Customized Layer 3 Managed Switch Software for China Rail On Board unique needs
  • Robust Design including operating Temperatures of -40 to 75C
  • IP67 Water Proof Housing
  • Robust M12 Connectors for rugged reliability
  • Small Size to optimize control cabinet space
  • Gigabit and PoE options


Henrich switches are being used as the backbone for China Rail next generation Train Control Network.  China Rail evaluated 20 different global switch manufacturers over 18 months before choosing Henrich as their preferred Ethernet switch.   A highly critical factor in choosing Henrich is the switches extremely fast recovery should one of the ring connections fail.   The switch will recover and start communicating in faster than 5 ms for the Layer 2 switch and 15 ms for Layer 3, the fastest recovery times in the industry! In addition to the switches robust performance, the Henrich Layer 3 software had to be customized to meet the unique needs of China Rail.   

The HEST12M series is small in size to meet the critical space needs in the control cabinet on board.   The M12 connectors provide a robust and water proof connection to hold up to the most extreme environments.  The fan-less cooling design adds to its reliability, along with its dual power supply inputs.   It is also offered in 10/100 Mbps and gigabit and PoE options 

The communication configuration is shown below. 

 China Rail Communication Configuration


China Rail

VCU= Vehicle Control Unit for Monitoring and Control

EDCU= Door controls

BCE=Brake controls

HVAC=Heating and air environmental controls





Henrich Electronics is a world class designer and manufacturer of industrial grade Ethernet switches, media converters and wireless access points.   Since 2013 Henrich has been providing a full line of industrial Ethernet networking products, including products for intelligent transportation system, rail, light rail, manufacturing, water/waste water, utilities and more.