6ES7407-0KA01-0AA0 - Power Supply Module - SIEMENS

Siemens power supply 6ES7407-0KA01-0AA0, SIMATIC S7-400 PS 407 10A

The power supply module 6ES7407-0KA01-0AA0 belongs to the SIMATIC S7-400 PS 407 series from Siemens. Designed for demanding automation architectures, it provides a regulated 5 V DC output and a rated output current of 10 A to reliably power CPUs, I/O modules and communication cards of S7-400 and M7-400 systems. This unit is intended for industrial environments where service continuity, electrical robustness and control of voltage sag under load are priorities. By ensuring even power distribution on the backplane, it directly contributes to application availability and helps prevent unexpected shutdowns caused by power faults. This reference is also part of preventive maintenance and retrofit strategies for installations fitted with SIMATIC S7-400 programmable controllers, offering form factor, connectors and compatibility that facilitate like-for-like replacement without modifying the existing architecture.

Technical specifications

• Manufacturer reference : 6ES7407-0KA01-0AA0
• Range : SIMATIC S7-400, PS 407 power supply module
• Manufacturer : Siemens
• Type : Power supply module for S7-400 rack, 10 A
• Output voltage : regulated 5 V DC
• Rated output current : 10 A
• Compatibility : SIMATIC S7-400 and M7-400
• Application : Powering the backplane and CPU, I/O and communication modules
• Input voltage : to be checked in Siemens documentation according to installation context

Overview of the SIMATIC S7-400 range

The SIMATIC S7-400 platform is dedicated to medium- to large-scale automation systems where modularity, resilience and scalability are required. The PS 407 power supplies provide a stabilized 5 V DC power source for all cards mounted in the chassis, supporting load variations related to production cycles, start-up phases and transient events. They help maintain the electrical coherence of the automation system by limiting disturbances that could cause PLC restarts or sporadic errors on internal buses.

• PS 407 power supplies : regulated 5 V DC supply sized for the energy needs of S7-400 racks, capable of sustaining the system's nominal load within the range defined by the integration study.
• S7-400 ecosystem : CPUs, I/O modules and communication interfaces rely on stable backplane power to guarantee consistent execution cycles and processing reliability.

The 6ES7407-0KA01-0AA0 model is intended for configurations with a cumulative consumption compatible with 10 A on the 5 V DC line. It is a relevant choice for production lines and process installations where availability requirements demand a secure and repeatable power sizing.

Industrial applications

This power supply module fits into many contexts where SIMATIC S7-400 programmable controllers manage equipment and processes:

• Continuous processes : chemical, food & beverage, water and wastewater, where power stability supports control loop coherence and the integrity of acquisition data.
• Discrete manufacturing : assembly, packaging, cell robotics, with sequential logic control and intensive exchanges between I/O modules and controllers.
• Intralogistics and conveying : sorting lines, material handling, where the controller orchestrates sensors, actuators and cell networks.
• Site utilities : HVAC, boilers, compressed air, where automation reliability influences energy efficiency and operational safety.
• Special machines : assembly stations, test benches, where S7-400/M7-400 compatibility simplifies replacements and spare parts sourcing.

Integration and communication

Integration of the PS 407 10A is performed directly into the SIMATIC S7-400 chassis. The module feeds the backplane with 5 V DC and distributes power to cards mounted on the rack. Selection should be based on a load assessment of installed modules by summing their consumptions on the 5 V line to verify suitability with the 10 A capacity. This approach helps prevent start-up failures, random resets and logic drifts resulting from local voltage drops.

The input voltage and environmental specifications must be confirmed in the Siemens documentation related to your installation. No control commands, communication protocol or software configuration are required for the power supply to operate, as it performs a dedicated electrical role in stabilising and distributing 5 V DC power to the controller and its associated cards. In case of rack extension, increased I/O density or replacement of modules with different consumption ratings, it is recommended to update the load calculation to maintain a safe operating margin.

Availability and warranty

The reference 6ES7407-0KA01-0AA0 is offered by Standard Exchange Industry as new or reconditioned supply, and is also available as exchange unit or for repair depending on the condition and urgency of your need. Each reconditioned unit is bench-tested and comes with a warranty of 6 to 24 months depending on the chosen service. Shipping is provided within 24 to 72 hours to over 120 countries to meet restart requirements. Our technical team can assist you to verify S7-400/M7-400 compatibility, validate the 10 A sizing against your module inventory, and identify an alternative if your architecture requires a different output capacity. This approach reduces the risk of prolonged downtime and secures the lifecycle of your automation equipment.