Product Overview

The 6ES7407-0KA02-0AA0 is a robust system power supply module engineered specifically for the Siemens SIMATIC S7-400 controller range. This high-capacity unit serves as the primary energy source for the backplane bus, converting AC input into the stabilized DC voltages required by CPUs, communication processors, and I/O signal modules. With a focus on industrial-grade reliability, the PS 407 ensures that even high-density PLC racks receive consistent power without the need for a minimum base load. Its design prioritizes operational continuity, providing integrated protection against voltage spikes and thermal stress, making it a fundamental component for any large-scale S7-400 automation architecture.

Hardware Infrastructure and Power Metrics

This German-engineered power module is built to provide high-current output while maintaining a narrow footprint within the S7-400 rack system.

• Manufacturer Siemens

• Model Designation 6ES7407-0KA02-0AA0

• Input Voltage Support 120V / 230V AC (Automatic Range Selection)

• Backplane Output Current 10A at 5V DC

• Auxiliary Output 1A at 24V DC

• Power Consumption Approximately 95W (Typical)

• Net Weight 1.12 kg

• Casing Dimensions 5 x 22.2 x 29 cm

• Safety Features Overload and short-circuit protection with automatic restart

• Mains Buffering Supports brief power failure bridging (up to 20ms)

• Status Indicators Front-facing LEDs for input voltage, 5V DC, and 24V DC health

• Customs Code (HS) 8537101190

Industrial Context and Operational Environments

As the central power hub for the S7-400 series, the 6ES7407-0KA02-0AA0 is deployed in mission-critical sectors where power failure is not an option.

• Heavy Manufacturing Providing the current density needed for large-scale production lines involving hundreds of I/O points.

• Energy and Power Plants Ensuring the stability of control systems in high-EMI environments where voltage fluctuations are frequent.

• Complex Process Automation Powering high-speed communication processors in chemical and pharmaceutical facilities to maintain real-time data flow.

• Infrastructure Management Reliable service in 24/7 utility control systems, including water treatment and tunnel ventilation control.

• High-Availability Configurations Functioning as a reliable power source in redundant S7-400H systems to maximize facility uptime.