The Siemens 6SL3357-3AE41-0AA7 is a replacement IPD (Interface and Protection) card for a SINAMICS S120 water-cooled Active Line Module, rated 630 kW with a 570-720 V DC link and 1100 A. This is the board that handles the module's internal protection and interface logic — not a line-side filter or a power stack, but the control and monitoring layer that talks to the drive controller. It's a spare part, so if you're servicing a water-cooled CuNi Active Line Module in a high-power drive cabinet, this is the card you swap in when the original fails or goes intermittent.
Group code and product group
The group code is R2SC and the product group is 4Q30. These are Siemens internal classification tags — R2SC typically maps to drive spare parts, and 4Q30 to the SINAMICS S120 platform. If your ERP or spares system filters by these codes, this card lands in the right bin without cross-referencing the full order code.