Product Overview

The Siemens 6ES7307-1BA01-0AA0 is a dedicated load power supply from the PS307 series, engineered specifically for the SIMATIC S7-300 PLC system. This single-phase regulated unit serves as the primary energy source for the CPU and I/O modules, transforming standard AC line voltage into a stabilized 24V DC output. Featuring an automatic range switch for global input compatibility, the module ensures that sensitive electronic components are protected from voltage fluctuations. Its compact design is tailored for seamless integration onto the S7-300 rail, providing a unified and robust power foundation for decentralized and centralized automation racks.

Performance Specifications and Hardware Profile

• Input Voltage: 120/230 V AC (Automatic range selection)

• Input Range: 85–132 V / 170–264 V AC

• Output Voltage: 24 V DC (Regulated)

• Output Current: 2.0 Amperes

• Voltage Tolerance: ±3% static overall tolerance

• Residual Ripple: Typically 5 mV (Peak-to-peak)

• Mains Buffering: Minimum 20 ms at full load

• Efficiency: Approximately 84%

• Protection: Short-circuit and open-circuit proof with automatic restart

• Status Indication: Green LED for 24V DC output monitoring

• Mass: 0.95 kg

• Physical Dimensions: 2.5 cm x 5.1 cm x 83.8 cm

• Manufacturing Origin: Germany

• HS Code: 8537101190

The unit incorporates an electronic soft-start feature to mitigate inrush current during startup, preserving the lifespan of both the power supply and the connected PLC modules.

Industrial Applications and Deployment

The 6ES7307-1BA01-0AA0 is a fundamental component in industrial control cabinets across various sectors, including automotive manufacturing, food and beverage processing, and building automation. It is specifically utilized to power S7-300 backplane buses, ensuring that data processing remains uninterrupted even during minor mains power dips. Its high dielectric strength and noise suppression make it ideal for environments with heavy electromagnetic interference, such as near high-power motor starters or induction heaters. Whether used as a replacement part for legacy systems or integrated into new machinery, this PS307 module provides the necessary stability for critical PID control loops, sequence-of-event recording, and fail-safe automation tasks.