The Siemens 6SL3320-1TG31-2AA0 is a SINAMICS S120 Single Motor Module, listed as a spare part. It takes a 675 V to 1035 V DC input and delivers 500 V to 690 V three-phase AC output at 120 A. The built-in unit uses internal air cooling and ships with the DRIVE-CLiQ cable, so you're not hunting for a separate communication link when you swap it in.
What the Ratings Mean for Fit
The 120 A output rating at 500-690 V 3AC tells you this module is sized for medium-to-large induction motors in the 90-132 kW range at 400 V, or higher at 690 V. The 675-1035 V DC input range matches a standard S120 DC-link bus, so it drops into an existing drive cabinet without a separate power supply module. Internal air cooling means it needs clearance around the heatsink fins — don't bury it against the backplane.
Deployment Context
Built-in construction means it mounts inside a panel or drive cabinet, not as a standalone enclosure. The DRIVE-CLiQ cable is included, so the communication link to the Control Unit is ready to plug in. Plan for airflow around the module; internal air cooling relies on ambient cabinet air, not a dedicated fan duct.