The Siemens 6SL3353-3AE38-4AA0 is a factory-original replacement IPD (Interface & Protection Device) card for an air-cooled SINAMICS S120 Active Line Module. This is the specific board that handles the module's internal signal routing and protection logic — not the main power section or the Control Unit. It is classified as Product class C, meaning it is manufactured or produced to order and cannot be reused, re-utilized, or returned against credit.
The board carries a REACH Article 33 duty-to-inform declaration for Lead (CAS-No. 7439-92-1 > 0.1% w/w). The Group Code R2SC and Product Group 4Q30 are Siemens internal classifications used for ordering and logistics routing — they do not affect form, fit, or function.