The Siemens 6ES7400-1TA11-0AA0 is a SIMATIC S7-400 UR1 aluminum rack designed for central or distributed configurations. It provides 18 slots for I/O modules, CPUs, and interface modules, with space for two redundant power supplies. Operating temperature range is 0 °C to 70 °C, which covers most industrial cabinet conditions without forced cooling.
This rack carries UL, CE, UKCA, FM, KC, EAC, RCM, and CCC approvals, making it acceptable for panels destined for North America, Europe, Russia, South Korea, Australia, and China. No separate country-specific variant needed.
Sourcing and fit for the BOM line
The 18-slot capacity supports large I/O counts in a single chassis. The P bus and communication bus are built into the backplane, so no separate bus cabling is needed between slots. If your panel was specified around the narrower 9-slot UR1 rack (6ES7400-1JA11-0AA1), the 6ES7400-1TA11-0AA0 is wider (482.5 mm vs 257.5 mm) and shares the same 290 mm height and 27.5 mm depth. It will not drop into the same cutout without panel modification, but the mounting hole pattern and backplane pinout are identical — rewiring the modules is not required.