The converters accept 24, 36, 48, 72, 96 or 110VDC with wide EN50155 input ranges and deliver a single output of 12, 24, 48 or 110VDC. Regulation is 1% from no load to full load across all line and load conditions. The RWR 155 units are fully encapsulated in a thermally conductive MIL-grade silicon rubber compound with a UL94V-0 flammability rating.
They also meet environmental criteria stipulated in MIL-810C, D, with protection from high levels of shock and vibration, moisture, salt, fog and other contaminants. Cooling is by conduction via base plate to a heatsinking surface. The units operate over a temperature range from -40 to +70°C for full specification (no derating). The compact railway converters measure 108x70x191mm.