Siemens 6ES7370-0AA01-0AA0 – SIMATIC S7-300 DM 370 dummy module

The Siemens 6ES7370-0AA01-0AA0 is a SIMATIC S7-300 DM 370 dummy module designed for use during module replacement in S7-300 automation systems. It is used to occupy a module position and maintain the structure of the installed rack configuration.

This dummy module does not provide digital or analog I/O channels. It draws only a small current from the 5 V DC backplane bus and has very low power loss.

The DM 370 is suitable for maintenance, spare part management and replacement work in existing SIMATIC S7-300 installations where module position and mechanical layout need to be preserved.