Siemens 6ES7400-1TA01-0AA0 Programmable Logic Controller Module

Siemens 6ES7400-1TA01-0AA0 is a SIMATIC S7-400 UR1 rack designed to host 18 slots of CPUs, I/O, and communications modules for centralized or distributed control configurations. This UR1 backplane accepts two redundant power supplies to boost system availability, a common requirement for mission-critical automation tasks. The 18-slot rack measures 482.5 mm wide by 27.5 mm high by 290 mm deep, providing a compact chassis for scalable installation and serviceability. The product, identified by 6ES7400-1TA01-0AA0, is explicitly described as a UR1 rack with 18 slots and two plug-in redundant power supplies for S7-400 systems, and it supports both P-bus and the system communication bus to connect with peripheral modules. Typical applications include industrial automation where centralized PLC processing or distributed I/O are needed, such as manufacturing lines or packaging equipment that benefit from modular expansion and fault-tolerant power. Weighing about 4.1 kg, this rack is sold as a standard stock item through Siemens Industry Mall and authorized distributors, with an active PM300 lifecycle classification.