Siemens 6ES7400-1JA00-0AA0 is a 9-slot rack backplane designed for the S7-400 PLC family. It provides the backplane connectivity to accommodate Siemens S7-400 modules in a single 9-slot rack, enabling a compact modular controller assembly. This part is used in industrial control panels where a dedicated 9-slot S7-400 backplane is required.
