Siemens 6ES7 307-1BA01-0AA0 Power Supply Unit

Siemens 6ES7307-1BA01-0AA0 is the SIMATIC PS307 stabilized power supply for the S7-300 family. It accepts international mains voltages—120 V or 230 V AC—and delivers a regulated 24 V DC output at up to 2 A, making it suitable for powering the backplane and connected I/O modules in S7-300 installations. The part is identified in Siemens catalogs as 6ES7307-1BA01-0AA0 and is marketed as the PS307 power supply within the SIMATIC S7-300 lineup. This module provides a dedicated DC source for the 24 V systems used by Siemens PLCs, ensuring stable operation across typical industrial environments. Typical applications include PLC rack power for S7-300 CPU and peripheral modules, automation panels, and control circuits that rely on a robust 24 V DC supply. Key verified specifications: Input: 120/230 V AC; Output: 24 V DC, maximum current 2 A; Power supply type: regulated/stabilized PS307; Applicable hardware family: SIMATIC S7-300.