The railway sector is characterized by its challenging environment due to mechanical demands (shocks and vibrations), temperature, and the presence of electromagnetic noise generators. Furthermore, onboard systems often perform tasks that affect the safety of vehicles carrying passengers. For these reasons, the components installed must comply with specific industry regulations.
The EN50155 standard covers aspects such as shock and vibration resistance, temperature, EMC, and input voltage ranges, among others. The EN45545 standard addresses the behavior of components in the event of a fire, limiting the substances that components may generate.
KOLBI Electrónica, a TRACO distributor, presents its new THN15WIR family of DC/DC converters. These DC/DC converters are designed for railway applications and comply with the standards described. In a 1x1" form factor, the 15W converters offer the full range of output voltages. The most common input voltages for railway applications are available (24, 36, 48, 72, and 110 Vdc), with a tolerance of +/-40% of the nominal input voltage within these ranges. A remote on/off input allows the converter to be enabled remotely; likewise, if the input voltage drops below predefined limits, the converter will safely disconnect to prevent damage to its input.
An efficiency of up to 91% allows operation at full load up to 75°C, and up to 90°C at 50% power. EN45545-2 certification, along with IEC/EN 60950-1 and UL60950-1 standards, ensures compliance with regulations regarding smoke emissions, flammability, and electrical safety.
This converter is a new addition to TRACO's range of products for railway applications. Similar families are available in 3, 6, 8, 20, 40, 75, 100, 160 and 200W.

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