The 6SL31620AB000AA0: The Siemens 6SL3162-0AB00-0AA0 is a SINAMICS spare fan designed for a 50 mm line width, supplied with a lid. It's a field-replaceable cooling component for SINAMICS drive modules that use this fan form factor — typically the smaller frame sizes where the fan assembly is integrated into the module housing.
This is a genuine Siemens spare part, not a third-party substitute.
The 50 mm line width tells you which SINAMICS module frame this fan fits — it's the same width used on several Power Module and Control Module variants in the S120 and G120 chassis families. If you're replacing a failed fan on a 50 mm-wide SINAMICS unit, this is the OEM spare with the correct mounting holes and connector keying. Swapping it is a panel-side job: disconnect the drive supply, unplug the old fan connector, remove the retaining screws or clips, lift out the old fan and lid, reverse the process. No firmware or parameter change needed — the drive detects the fan tach signal (if equipped) automatically.