Auxiliary 14W supplies for railway-rated applications

Auxiliary 14W supplies for railway-rated applications

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By Graham Prophet

The devices operate at a nominal input voltage of 72 VDC or 110 VDC and supply an output voltage of 24 VDC (12 VDC and 48 VDC also available) with an efficiency of over 90%. The PMGS/PCMGS14 are available with an input reverse polarity protection by a series diode and are continuous short circuit protected.


The converters operate at an ambient temperature range of –25 to +70°C (EN 50 155, class T3), fulfil safety standards according to EN 50 155, EN 50 124-1 and meet EMC requirements according to EN 50 123-1. The converters are designed to withstand interruptions of the supply voltage up to 10 msec and thus, comply with class S2 according to EN 50 155.


Depending on the application, they can be used for PCB (PMGS) or chassis mounting (PCMGS). Optionally, they are available for DIN rail mounting. Depending on the model, the dimensions are 76.0 x 50.7 x 22.7 mm (PMGS) or 110.0 x 50.8 x 23.0 mm (PCMGS). The vacuum encapsulated converters are maintenance-free, for use in devices with Protection Class II.


MTM Power;


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