SIEMENS 6ES7307-1BA00-0AA0 SIMATIC S7-300 Regulated power supply PS307

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This SIEMENS 6ES7307-1BA00-0AA0 is a SIMATIC S7-300 PS307 regulated power supply designed to provide stable 24 V DC / 2 A power to S7-300 PLC CPUs and I/O modules. It operates from a 120/230 V AC input and is designed for reliable use in industrial automation, CNC machine tools, and PLC control cabinets.

The PS307 supplies regulated DC power to the S7-300 control system and is suitable for applications using CPU 31x, SM, FM, and CP modules. Its compact rail-mounted design and accessible front terminals support straightforward installation, maintenance, and replacement in existing SIMATIC S7-300 cabinets.

This power supply is commonly used in CNC control panels, machine-tool automation, interlocks, coolant systems, hydraulics, auxiliary functions, and other industrial control applications where stable PLC power is essential. It is suitable as a replacement unit, CNC replacement component, or industrial spare part for maintaining legacy S7-300 installations.

Made in Germany, this SIEMENS PS307 can be supplied as a tested unit with commercial warranty and protective packaging for industrial transport. It is also suitable for obsolete equipment, repair service, exchange service, and emergency spare requirements, with worldwide shipping and fast dispatch depending on inventory availability.

Frequently asked questions about 6ES7307-1BA00-0AA0:

Is this PS307 suitable for any S7-300 rack layout?
It fits standard SIMATIC S7-300 racks and installs on the same mounting rail as the CPU. Verify the required output current for your configured load and select the PS307 version that matches the system consumption per the SIEMENS datasheet.

Can it replace another PS307 version during a breakdown?
It can be a drop-in replacement within the PS307 family when electrical ratings and dimensions match. Always confirm output current and wiring before energizing the cabinet.

What field symptoms point to a failing S7-300 power module?
Common signs include unstable 24 V on L+, intermittent CPU resets, I/O fault LEDs without clear cause, or repeated undervoltage diagnostics. If these appear after load changes, swapping the supply with a tested unit is a standard maintenance step.

What input supply does the module accept?
The PS307 series is designed for industrial AC mains as specified by SIEMENS. Check the nameplate and your cabinet documentation to confirm the correct input rating for your model.

How should teams manage spares for this model?
Many maintenance groups keep one tested replacement unit per cabinet group or per line to protect against unplanned stoppages. This supports fast field replacement and short repair turnaround during scheduled service windows.