The Siemens 6SL3355-3AG34-7AA7 is a replacement IPD card for the SINAMICS S120 water-cooled (CuNi) Power Module, rated at 450 kW on a 500–690 V three-phase supply at 50/60 Hz, with a continuous output current of 465 A. This is the interface board that sits between the drive control unit and the power stage in the liquid-cooled chassis — not a standalone drive, but the card that handles the gate-drive signals, fault feedback, and DC-link monitoring for that specific power module. If you are rebuilding or servicing a CuNi S120 cabinet, this is the board the BOM calls out.
The 465 A continuous rating at 500–690 V AC three-phase matches the output stage of the S120 water-cooled CuNi power module rated for 450 kW. That is the full-load current the IPD card is designed to gate and monitor — not a thermal limit of the card itself, but the current the power module delivers under the card's control. The 50/60 Hz line frequency tolerance covers both 50 Hz grids (Europe, Asia, most of Africa) and 60 Hz grids (Americas, parts of Japan and the Middle East) without a hardware change.