Siemens 6ES7 307-1BA00-0AA0 Power Supply Module

Siemens 6ES7-307-1BA00-0AA0 is a regulated power supply module for the SIMATIC S7-300 PLC family, sold as the PS307 2A power supply. It accepts 120/230 V AC input and delivers 24 V DC at up to 2 A, providing stable backplane power to the S7-300 CPU and connected I/O modules. The 0AA0 variant is the PS307 2A configuration, and the model is commonly cataloged as 6ES7307-1BA00-0AA0, with related revisions such as 6ES7307-1BA01-0AA0. In automation panels, it is used to supply reliable 24 V DC power to Siemens S7-300 controllers and peripheral modules, enabling consistent operation of legacy control architectures that rely on PS307 power for proper digital and analog I/O functioning.