FMC Technology


With our range of modular converters, APS reliably covers most standard main voltages for public transport (e.g. tram, subway, trolleybus) and mainline rail services.
The auxiliary power converters are structured with standardised modules and individually scalable. Depending on the technical requirements, e.g.: the input voltage(s), output power(s), number and type of energy consumers, etc. – our auxiliary converters are assembled in combinations of various modules. That means we can cater with great flexibility for the individual needs of our customers.

Leading the Way: The Function Module Concept (FMC)

  • With or without galvanic isolation
  • Up to 97% power efficiency
  • Cooling type: usually with free convection, additional ventilation only if necessary
  • Protection rating: IP 66
  • Rated power: 3 kVA to 60 kVA (cos phi = 0.85)
  • Communication: Ethernet or CAN Bus
  • Installation: Roof/Underfloor/Inside vehicle
  • Stainless steel casing in accordance with Swiss norm EN 15085

Configure your own auxiliary power converter!

Our APS product configurator is based on our FMC Technology and can help you identify your basic requirements for on-board converters