Siemens 6SL3120-2TE21-0AA3 Motor Protection Relay

Siemens 6SL3120-2TE21-0AA3 is a SINAMICS S120 Double Motor Module, housed in a booksize package with internal air cooling, designed to drive two servo motors from a single drive assembly. It accepts a 600 V DC link input and provides two 400 V AC, 3‑phase outputs, each rated for 9 A, enabling compact dual-motor configurations within SINAMICS S120 systems. Marketed as an Ersatzteil (spare part) in Siemens’ Industry Mall, the module features optimized pulse patterns and supports the extended Safety Integrated functions, helping simplify integration while maintaining safety standards. As part of the SINAMICS S120 family, this 2‑channel module supports coordinated control of two motors in a space‑saving, booksize format, with related variants such as 6SL3120-2TE21-0AA4 sharing the same core design but different part codes.