The 6SL3353-3AG41-3AR4 is a spare-part IPD (Intelligent Power Device) card for a SINAMICS S120 air-cooled Active Line Module. It handles 500-690 V three-phase AC at 1270 A, with overload capability to 200% reactive current. This is the FPGA-equipped variant — the processor board that manages the line-side power conversion and reactive current control inside the module. It is not a standalone drive; it is the control-and-interface card that plugs into the ALM frame. The card is classified as Product class C: manufactured or produced to order, which means it is not a stocked shelf item. It is built to a specific order and cannot be reused or returned for credit. Plan the BOM freeze accordingly — no last-minute swaps once the order is placed.
That means Siemens still produces it and there is no announced end-of-life. However, because of the C-class manufacturing, availability is not on a shelf; it is quoted and built to order against an RFQ.
The 1270 A rating at 500-690 V three-phase sets the line-side current the Active Line Module can handle continuously. The 200% overload on reactive current means the card supports the module's ability to supply or absorb reactive power up to twice the nominal rating for short durations — relevant for applications with heavy regenerative loads or power-factor correction demands. The group code R2SC and product group 4Q30 are internal Siemens classification tags used for ordering and logistics routing. They do not affect electrical fit but are useful when cross-referencing against Siemens' own documentation or spare-parts lists.