Bel Power Solutions Melcher™ RCM Series (Railway Chassis Mount) DC-DC converters are reliable power supplies for railway and transportation systems. There are two wide input voltage ranges available for 60 W, 150 W and 300 W models. 500 W and 1000 W models are optimized for 72 V or 110 V railway batteries. The RCM Series is designed for chassis mount applications, with ah integrated enclosure, operating in convection cooled environments. Many options are available, such as an output ORing FET for redundant operation, output voltage adjustment, interruption time, out-ok signals and a shutdown input.