Streckenbild mit rotem Pfeil und Zugkreuzung

Trainguard® MiniLEU S11

Cost-saving and installation-optimized ETCS solution
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Trainguard MiniLEU S11

The Trainguard MiniLEU S11 was designed for rail customers wanting to retrofit their existing systems with ETCS in a quick, cost-effective and environmentally-friendly way. Whether it is to increase safety or interoperability: in combination with the new ETCS Mode Level 1 Limited Supervision mode, customers can now implement a roll-out without reduction in performance or extensive changes to operating rules and regulations.

ETCS installation – quick and straightforward

The MiniLEU S11 was developed to enable blanket ETCS installation within the shortest of timescales and with minimal effort. To achieve this, we reduced the amount of effort involved – from programming and configuration, installation through to commissioning – to a minimum.

Lifecycle costs were reduced to a minimum through the following measures:

  • No need for preventive maintenance thanks to automatic notification of faults or a low-battery level. Compliance with all relevant European standards. 
  • Extremely high MTBF (mean time between failures) reduces intervention effort that would otherwise be required in the event of a failure.
  • Status indicators on the front panel of each board allow a diagnosis to be established without equipment. Necessary steps can be taken and implemented within the shortest of timescales.
  • Thanks to fixed programming and configuration, no reprogramming is required if boards are changed.
  • A battery service life of 10 years or more can be expected based on the low energy consumption.


More than 3000 MiniLEU S11 are in operational use in Switzerland.
Table with technical data

Technical data – Trainguard MiniLEU S11

Operational use in Switzerland
MiniLEU S11 weight
6.8 kg (incl. housing)
300 x 300 x 300 mm
Average power consumption
30 mW
Number of balise interfaces
Maximum distance: MiniLEU S11 to balise
300 m
Enviromental conditions
Operating temperature range
- 40 °C to + 70 °C
Not required
Storage categories
1K2, 1Z2, 1B1, 1C2, 1S2, 1M2
Storage temperature
- 25 °C to + 70 °C
Protection class
IP54 in the housing
Air humidity

According to EN 50125-3, Climate Category T1

According to EN50125-3, use 1 – 3m next to trackside 
Fouling degree

4C3, 4B1, 4S3 (applies externally to the housing)

EN 50121-4, EN 61000-6-2, EN 61000-6-4
Insulation coordination
EN 50124-1
Service life
25 years