Melcher™ RCM Series DC-DC Converters Feature Integrated Hold-Up Capacitors

Press Release Summary:

RCM Series DC-DC Converters consist of RCM150 (150 W) and RCM300 (300 W) models. The units are suitable for cab radios, HVAC systems, train control, passenger information systems and toilet systems. These converters are protected against over-load, -voltage, -temperature, under voltage, no-load and short circuit. Units come with ORing FET, remote voltage adjustment and are operated on 24 V to 110 V voltages in -40° up to 85°C temperature range.

Original Press Release:

Bel Power Solutions Announces Melcher™ RCM Chassis-Mount 150 W and 300 W DC-DC Converters for Railway Applications

Revolutionary RCM Series is Highly Reliable, Easy to Use and Cost Efficient

Santa Clara, CA [March 28, 2018] Bel Power Solutions and Protection, a Bel group company (NASDAQ: BELFA and BELFB) and premier global manufacturer of power management devices, announces the RCM150 (150 W) and RCM300 (300 W) chassismount DC-DC converters, which are designed for railway applications where compactness and high reliability are required. These new 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 control, passenger information systems, toilet systems, illumination and many others.

RCM Series are fully compliant to 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 on board 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° up to 85°C. All PCBs are conformal coated and protected against humidity and pollution which occurs during typical lifecycles of +20 years of rolling stock equipment.

The converters are fully protected against over-load, -voltage, -temperature, under voltage, no-load and short circuit with automatic recovery. Additional features include integrated hold-up capacitors for 10ms 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.

RCM150 units are currently in stock with Digi-Key, and RCM300 units are expected to be available in April. For more detailed product information, download the RCM Series datasheet or visit the product page. For technical inquiries, send an eMail to or call 866-513-2839.

About Bel

Bel ( designs, manufactures and markets a broad array of products that power, protect and connect electronic circuits. These products are primarily used in the networking, telecommunications, computing, military and aerospace, transportation and broadcasting industries. Bel’s product groups include Magnetic Solutions (integrated connector modules, power transformers, power inductors and discrete components), Power Solutions and Protection (front-end, board-mount and industrial power products, module products and circuit protection) and Connectivity Solutions (expanded beam fiber optic, copper-based, RF and RJ connectors and cable assemblies). The Company operates facilities around the world.

Media Contact:

Susan Rawlish 

Download Spec Sheet

More from Electrical Equipment & Systems

All Topics