What this card does in the drive cabinet
The 6SL3357-3AG41-6AR4 is a replacement IPD (Interface and Protection Device) card for a SINAMICS S120 liquid-cooled Active Line Module rated at 1700 kW on a 500-690V 3AC supply at 50/60 Hz. It handles 1560 A and is designed for overload operation at 200% reactive current — meaning it can ride through heavy reactive demand without dropping the DC link. This is a spare part, not a standalone module; it plugs into the existing Active Line Module frame in a liquid-cooled cabinet.
