Siemens S30122-K5385-X Power Supply Unit

The Siemens S30122-K5385-X PSUP (Power Supply Unit Peripheral) is a telecom-grade power module designed for HiPath/Hicom systems, converting a -48 V DC input into multiple regulated rails to power backplane shelves, line cards, and processors within the HiPath 3000/HiPath 4000 family. It provides +5.1 VDC at up to 16 A, +5 VDC at up to 12 A, and +12 VDC at up to 2.5 A, delivering roughly 173 W of total output power (some listings cite 245 W for other revisions). The compact module is intended to mount within the system’s PSU backplane and is frequently sold as refurbished or used, reflecting its status as an older Siemens peripheral part. Weighing about 5.8 lb, it offers a tangible footprint consideration for rack and enclosure planning. This PSUP is part of Siemens’ legacy HiPath/Hicom power architectures and is documented alongside related S30122-series modules in service manuals and supplier catalogs.