The Siemens 6SL3100-0BE21-6AB0 is a SINAMICS S120 Basic Line Module, serving as a fundamental component for drive systems. This module functions as a non-regulated infeed unit, converting a three-phase AC supply voltage into a stable DC voltage for the common DC link. It is designed for applications where energy regeneration back to the supply system is not required, making it a cost-effective solution for a wide range of single and multi-axis drive configurations. Its compact design and internal air cooling facilitate easy integration into control cabinets, ensuring reliable power supply to connected motor modules within the SINAMICS S120 family.