The Siemens 6SL3353-3AE35-0AA0 is a replacement Interface and Power Device (IPD) card for the SINAMICS S120 air-cooled Active Line Module. It handles 380-480 VAC three-phase at 50/60 Hz and is rated for 490 A — the current draw of the line module's DC-link charging and pre-charging circuit, not the motor load. If you're swapping a failed IPD on a 490 A ALM, this is the direct spare.
This IPD card mounts inside the SINAMICS S120 air-cooled Active Line Module frame. The 490 A rating ties it to the largest air-cooled ALM in that voltage class — the one that feeds a shared DC bus for multiple Motor Modules. On a line-down swap, verify the ALM nameplate matches the 380-480 VAC, 490 A range before pulling the old card.
RoHS compliance is confirmed from July 1, 2017. No UL or IEC certification numbers are listed in the available data — if your site requires those for acceptance, confirm at quote time.