RCM Series Melcher™ Chassis-Mount DC-DC Converters

Bel Power Solutions' chassis-mount 150 W, 300 W, 500 W, and 1000 W DC-DC converters are designed for railway applications

Image of Bel Power Solutions RCM Series Chassis-Mount DC-DC ConvertersBel Power Solutions' RCM chassis-mount DC-DC converters are designed for railway applications where compactness and high reliability are required. RCM series products are fully isolated and highly efficient over a broad operating range of input and output voltages. In addition, their compact size and ease of installation make them uniquely suited for various rolling stock applications, such as cab radios, HVAC systems, train controls, passenger information systems, toilet systems, illumination, and many others.

The RCM series is fully compliant with international railway standards EN 50155, EN 50121-3-2, EN45545-2 and North American AREMA requirements. In addition, the RCM series is safety approved to the latest edition of IEC/EN/UL 60950-1. Nominal onboard battery voltages from 24 V to 110 V are covered by two input ranges and converted into a fully regulated and isolated single output voltage of 12 V or 24 V. The converters can operate in a convection cooled environment at temperatures from -40°C up to +85°C. All PCBs are conformal coated and protected against humidity and pollution, which occurs during typical lifecycles of over 20 years of rolling stock equipment.

The converters are fully protected against overload, overvoltage, overtemperature, undervoltage, no-load, and short circuit with automatic recovery. Additional features include integrated hold-up capacitors for 10 ms interruption, ORing FET, and passive current share for parallel and redundant operation, as well as remote voltage adjust, enable, and fail signal. These innovations make the RCM 150 W and 300 W DC-DC converters ideal for a broad range of applications in the global railway market.

  • RoHS, lead-free-solder product
  • 2 input voltage ranges covering all railway batteries
  • 2 output voltages, 12 V and 24 V
  • Closed housing for chassis mounting
  • Extremely high efficiency and high power density
  • Low inrush current
  • 3 connectors: input, output, auxiliary
  • Overtemperature, overvoltage, overcurrent, and overload protection
  • Many options available
  • Compliant with EN 50155, EN 50121-3-2
  • Fire and smoke: compliant with EN 45545 and NFPA 130
Updated: 2018-06-21
Published: 2018-04-05