Siemens S30122-K5385-X DC Power Supply 48VDC 245W

Siemens S30122-K5385-X PSUP (Power Supply Unit Peripheral) is a DC/DC converter module designed for Siemens Hicom 300 and HiPath 4000 telecom systems. It accepts a -48 V DC distribution input and converts it to the internal rails required by system modules, delivering up to 245 W of power for connected line cards and controllers. The model is specified as S30122-K5385-X and is used within Hicom/HiPath installations to supply the digital backbone and peripheral subsystems with stable, regulated voltages. This 48 V DC input compatibility aligns with common telecom power distributions, enabling reliable power delivery in cabinet or rack installations. Typical applications include powering modular telecom controllers and peripheral cards inside Hicom 300-series exchanges and HiPath 4000 family systems, where a dedicated PSUP is employed to support the subsystem ecosystem with a centralized, compact power source.