The Siemens 6SL3353-3AG41-0AR4 is a replacement IPD (Interface and Power Distribution) card for the SINAMICS S120 air-cooled Active Line Module, fitted with an FPGA for fast signal processing. It handles 500-690 V three-phase AC at 50/60 Hz and is rated for 1025 A in overload operation at 200% reactive current — meaning it can supply double the normal reactive current momentarily to support demanding motor loads or line disturbances.
The 1025 A rating at 200% reactive current overload supports a high-power Active Line Module in a drive system. The FPGA handles the fast switching logic for active rectification.