The Siemens 6SL3356-3AE38-4AA0 is a replacement IPD (Interface & Protection) card for a liquid-cooled SINAMICS S120 Motor Module rated at 450 kW on 380-480 V three-phase, 50/60 Hz, pulling 840 A. This is the control and protection board that sits between the drive controller and the power stage — not the power module itself, but the logic board that handles gate drive, fault detection, and feedback. If the card fails, the module stops; swapping this board restores the drive without replacing the entire liquid-cooled assembly.
Regulatory and compliance notes
The part is RoHS compliant since April 2018, but the REACH candidate list includes lead (CAS 7439-92-1) above the 0.1% threshold, so downstream notification obligations apply under Article 33.