DC/DC Converter Regulator 12V Step Up to 48V &ndash; 3A 150W Brand new and high quality. All epoxy sealed containers with Waterproof Die-Cast Aluminum Housing. Page:1 x DC 12V Step Up to 48V 3A Converter Wire:Red 12V+ in,Black 12V- in,Yellow 48+ out,Black 48- out. Size:7.6cm x 7.5cm x 3.2cm - 2.99inch x 2.95inch x 1.26inch.