Railway Switch-mode Power Supply Solutions

Railway Solutions


Railway Switch-mode Power Supply Solutions


ABSOPULSE designs and manufactures an extensive range of railway switch-mode power supply solutions. Our railway converters power on-board and track-side electronic systems in railway projects around the world.

Our railway quality power conversion products include DC-DC power converters, AC-DC power supplies, rectifiers and battery chargers and DC-AC sine wave inverters. All of our products are designed for a long operational in severe environments – our first major railway project was in 1985 and the original units are still in operation.

Typical applications include for our railway converters include:

  • signalling and communication systems;
  • wireless connectivity solutions;
  • GPS tracking systems;
  • video surveillance and security systems;
  • passenger information display systems;
  • customer entertainment systems;
  • train control and monitoring systems;
  • traction control systems;
  • door control systems;
  • headlamp and tail light systems.

ABSOPULSE railway switch-mode power supplies offer 

  • Any input and output required;
  • Wide input voltage ranges (EN50155);
  • Single or multiple outputs;
  • EMI/EMC filtering to the required standard, EN55022 Class A or B;
  • Optimal thermal performance;
  • Wide operating temperature ranges including -40°C to +70°C. Wider ranges are available;
  • Conduction/convection cooling;
  • Wide range of options including output fail alarms, redundancy, indicators, enable/inhibit and other controls;
  • High quality designs – large design headroom;
  • High quality components with established reliability;
  • High efficiency;
  • Full electronic protection – surge and transient protection;
  • RoHS compliance.

Railway standard compliance

ABSOPULSE railway power supplies are meet rail-specific standards including:

  • EN 50155;
  • EN 45545 (fire safety);
  • EN 50121-3-2 (EMI);
  • EN 55022 Class A and B;
  • EN 61000-4-2 (ESD);
  • EN 61000-4-3 (RF Immunity);
  • EN 61000-4-4 (Fast Transients);
  • EN 61000-4-6 (Conduction Immunity);
  • EN 50155 (Surge);
  • EN 50155 (Voltage Variations);
  • EN 50163;
  • RIA 12  surge protection (3.5VN 20ms);
  • RIA 13 and RIA 20 mechanical standards;
  • IEC 571 and IEC61373 shock/vibration.

Please contact us for compliance to any other standards that you require.

Rugged mechanical designs

ABSOPULSE 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 aluminum packages. These enclosures also protect internal electronic boards from condensation and the ingress of oil, salt, sand, insects and other environmental contaminants.
  • Custom connections.

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