RWY15 – RWY30

DC/DC Converter Single Output Railway Applications

The RWY series DC/DC converters are designed for use on Rail Rolling Stock and for many extremely harsh environments.
They are fully potted with a thermally conductive MIL-Spec silicon compound, meeting a high level of shock and vibration.

Rugged Mechanical Designs

Helios power supplies are ruggedly constructed and can be customized for specific mechanical requirements. Standard mechanical packages and ruggedization options include:

  • Chassis and wall-mountable units in vented conduction/convection or fan-cooled enclosures
  • DIN-rail and open-frame format available for many designs
  • Plug-in (Eurocard) format for modular power systems in 19 inch or 23-inch racks
  • Conformal coating and ruggedizing are standard
  • Full encapsulation (potting) in a thermally conductive MIL-grade silicon rubber compound with UL94V-0 flammability rating for immunity to high levels of shock and vibration, humidity, moisture, dust, salt, oil, insects and other contaminants
  • Enclosure in rugged, IP66- or IP67-rated waterproof, dustproof and explosion-proof die-cast aluminium packages. These enclosures also protect internal electronic boards from condensation and the ingress of oil, salt, sand, insects and other environmental contaminants
  • Custom connections
  • Portable Battery Chargers


Model Output ( V) Power  (W)
RWY15 12V  and 24V
are standard
Other outputs upon
15W~ 30W
RWY25 12V  and 24V
are standard
Other outputs upon
15W ~ 30W
RWY30 12V  and 24V
are standard
Other outputs upon
15W ~ 30W


Operating input voltage range 24VDC   ( 14.4 ~ 34 )  15  watts max.
36VDC   ( 22 ~ 51 )  25  watts max
48VDC   ( 20 ~ 67)  30  watts max
72VDC   ( 43 ~ 101)  30  watts max
96VDC   ( 58 ~ 135)  30  watts max
110VDC   ( 66 ~ 154)  30  watts max
Input Protection Reverse polarity protection.Inrush current limiting Lower voltage than specified will not damage unit
Output Voltage See  table
Regulation ±1% Line / Load combined
Operating Temp:  -40ºC to +70ºC cold plate temperature
Efficiency Model dependent , typically 80-90%
Dynamic Response Max ±5% diviation for 10% – 50% load step wuth 1msec recovery
MTBF >150,000 hrs

Related Products

Comms Connect Melbourne 2019 - Helios Power Solutions