R48-2000E3 BML440033/1 is a 2000W communication power rectifier produced by Emerson/Vertiv, supporting wide voltage input, high power factor, and efficient power conversion, suitable for various industrial and communication equipment requiring -48V DC power.

R48-3500e BML 440 066/1 is a high-performance 48V communication powerifier module launched by Emerson Network Energy (later belonging to Vertiv). It is widely used in telecommunications rooms, data centers, and base stations. It is renowned for high efficiency, high power density, and high reliability, supports hot plugging and intelligent current balancing, and is compatible with a variety of monitoring systems.