The Siemens 6SL3120-1TE21-8AA0 is a SINAMICS Single Motor Module, listed as a spare part. It takes a 600 V DC input and delivers 400 V three-phase AC at 18 A, with internal air cooling and a DRIVE-CLiQ cable included. No UL approval on this variant — factor that in if your site requires UL-listed gear for the panel.
This module is built for the SINAMICS S120 cabinet or chassis system — it bolts into the drive line-up and connects to the DC bus and DRIVE-CLiQ network. The 18 A output (400 V 3 AC) suits a motor in the 7.5 kW range on a standard 400 V supply. Internal air cooling means it pulls air through the module; make sure your enclosure's airflow path and ambient temperature stay within the SINAMICS S120 design guide limits, especially if the cabinet is packed tight or running in a warm environment like a mill or conveyor gallery.
The DRIVE-CLiQ cable is included — one less item to order separately when you slot this into a SINAMICS line-up. No UL approval on this code, so if your project spec calls for UL 508C or UL 61800-5-1, verify the cabinet-level listing or look at the UL-listed variant in the same family.