Siemens 6ES7400-1TA01-0AA0 is a SIMATIC S7-400 UR1 18-slot subrack designed to house CPUs, I/O modules and the backplane in a single enclosure for central or distributed rack configurations. The rack can accommodate two redundant power supplies, enabling a higher-availability S7-400 installation. It measures 482.5 mm in length, 27.5 mm in height, and 290 mm in depth, providing 18 module slots for scalable automation setups. This UR1 rack is used to organize a complete S7-400 backplane and module stack in industrial control panels. It is a standard component within Siemens' SIMATIC S7-400 family for rack-based automation architectures.
