6SL3955-0TX00-1AA2 SIEMENS PLC MODULE Description And Features The Siemens 6SL3955‑0TX00‑1AA2 is listed in some online sources as a control module (often labelled a “PLC module” or “power control module”) manufactured by Siemens for industrial automation applications.One listing describes it as a “Power Control Module” with rated voltage 2000 V and max current 100 A.It appears to be part of a high‑power control module family (thyristors or power electronics) rather than a