TheThe 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 simple logic I/O expansion.It’s aimed at
industrial automation / power control / drive systems.
| 6SL3955-0TX00-1AA2 | 
Frequently Asked Questions About 6SL3955-0TX00-1AA2
Q1: What exactly is this module used for?
A: According to the online listing, it’s described as a “power control module” or “thyristor module” (FBG TAS21F) with ratings of up to ~2000 V/100 A. So, while it might be listed under ‘PLC module’ 
categories in some resale/stock contexts, its actual use appears to be in power conversion/control rather than general PLC logic. You will need to verify whether your
application expects a logic processor, power control module, or thyristor unit.
Q2: What are the electrical ratings and environment specs?
A: Operating temperature: ranges vary (−55 °C to +150 °C in one listing) though one listing gives −25 °C to +50 °C. These are not official specs from Siemens—they may be 
approximate or generic resale descriptions. Always get the official datasheet.
Q3: Is it brand new and genuine?
A: One seller indicates the part is “brand new, 100% original” and lists it in a PLC module stock offering. However, when dealing with industrial modules
it’s critical to:Check the part number, revision code, and manufacturing date.Confirm it’s from an authorized Siemens distribution channel (or their
approved reseller).Ensure firmware/compatibility is correct.Because resale listings (especially from surplus/market‑places)
often carry risk of unknown revision, used parts, or missing support.

| 39SDM024DCCBN 16101-174/12 | 6DS1332-8RR | 6DS1832-8AA | 
| 6DS1122-8AA | 6DS1411-8RR | 6EC1001-0A | 
| 6DS1124-8AA | 6DS1412-8RR | 6FQ2531-0B | 
| 6DS1211-8AA | 6DS1606-8BA | C79451-Z1038-U13 | 
| 6DS1213-8AA | 6DS1618-8CA | 6DS1731-8RR | 
| 6DS1220-8AA | 6DS1703-8RR | 6ES7288-3AQ04-0AA0 | 
| 6DS1222-8BA | 6DS1717-8RR | 6QN5501-0BA | 
| 6DS1223-8AA | 6DS1719-8RR | 6DS1723-8BA | 
| 6DS1300-8AB | 6DS1722-8RR | 6DD1688-0AE2 | 
| 6DS1311-8AE | 6DS1723-8RU | 9AC9100-0AA10 | 
