The Siemens 6SL3131-6TE21-6AA3 is a SINAMICS S120 Smart Line Module in the booksize format, delivering 600 V DC at 27 A (16 kW) from a 380-480 V three-phase AC supply. It is designated as a spare part and includes the DRIVE-CLiQ cable. This is the regulated DC supply stage for a multi-axis S120 drive system — it provides the DC bus that powers downstream Motor Modules, so the 27 A rating governs how many axes and what total motor power the cabinet can support.
What the ratings mean for fit
The 16 kW output at 600 V DC (27 A) sets the DC bus capacity for the drive group. In a typical S120 cabinet, this Smart Line Module feeds a shared DC link; the sum of the connected Motor Modules' continuous power ratings must stay under this headroom. The booksize form factor and external air cooling mean it mounts in a standard S120 booksize frame and relies on cabinet airflow — no internal fan, so the enclosure's own cooling design must handle the module's dissipation.
Deployment context
This module is part of the SINAMICS S120 booksize family, designed for multi-axis machine tools, packaging lines, and material-handling systems where space on the DIN-rail or backplane is tight. The DRIVE-CLiQ cable included in the spare part package simplifies field replacement — no separate cable procurement during a swap-out.