Siemens 6ES7360-3AA01-0AA0 Simatic CPU Module

6ES7360-3AA01-0AA0 is the SIMATIC S7-300 IM 360 interface module designed for central-rack configurations. It provides the connection point between the CPU rack and up to three expansion racks over the C-bus, enabling scalable I/O topologies within a single S7-300 system. The IM 360 is part of the central-rack family that also includes IM 361 and IM 365 variants, offering flexible expansion paths while preserving centralized control architecture. As an interface module rather than a CPU, it handles the signaling and bus wiring that links the central module with remote I/O modules, while remaining devoid of programmable logic itself. Used with typical S7-300 CPUs, the IM 360-based configuration allows expanding a basic block to three expansion racks, making it suitable for compact-to-mid-size automation setups that require modular growth and centralized management. On Siemens Industry Mall and distributor listings, the product is identified specifically as the IM 360 interface module for central-rack connections, enabling up to three expansion racks via C-bus.