6ES7405-0KA02-0AA0 - Power Supply Module - SIEMENS

Alimentation Siemens 6ES7405-0KA02-0AA0 - SIMATIC S7-400 PS 405 10A

The power module 6ES7405-0KA02-0AA0 belongs to the SIMATIC S7-400 family by Siemens, a reference series for high-availability industrial automation architectures. Identified as PS 405 10A, this switch-mode power supply provides stable power rails for the CPUs and I/O boards of a programmable controller. Its wide DC input range, from 19.2 V to 72 V DC with an operational dynamic range of 18.5 V to 75.5 V DC, enables reliable integration on 24 V, 48 V or 60 V DC systems. It delivers two regulated outputs, 5 V DC 10 A and 24 V DC 1 A, to power the backplane logic and auxiliary circuits respectively, with a nominal power of 95 W. Built for industrial control cabinets, it uses a switching topology and DIN rail mounting to simplify integration and maintenance. This power supply targets maintenance teams and system integrators seeking a robust, well-documented solution to secure service continuity for critical automated installations.

Technical specifications

• Référence constructeur : 6ES7405-0KA02-0AA0
• Gamme : SIMATIC S7-400, module d’alimentation PS 405 10A
• Constructeur : Siemens
• Type : Alimentation à découpage pour automate programmable
• Tension d’entrée admissible : 19.2 à 72 V DC, dynamique 18.5 à 75.5 V DC
• Entrée nominale : 24 V DC, courant jusqu’à 4 A selon charge
• Courant d’appel maximal : 18 A, largeur à mi-hauteur 20 ms
• Sortie 1 : 5 V DC, 10 A pour l’alimentation logique
• Sortie 2 : 24 V DC, 1 A pour auxiliaires et signalisations
• Puissance nominale totale : 95 W
• Puissance dissipée typique : 16 W
• Topologie : Alimentation à impulsions, régulation stabilisée
• Montage : Rail DIN pour intégration en armoire
• Dimensions : Largeur 50 mm, Hauteur 290 mm, Profondeur 217 mm
• Compatibilité tension DC : Exploitation sur réseaux 24 V, 48 V et 60 V DC

Présentation de la gamme SIMATIC S7-400

The SIMATIC S7-400 series from Siemens has long been deployed in continuous processes and high I/O density production lines. The PS power modules in this range deliver the standardized backplane and auxiliary voltages, with extended tolerance to input variations to ensure reliable restart after mains disturbances or load transients. The modular architecture simplifies rack expansion and maintaining operational conditions during system upgrades.

• Alimentations PS 405 DC/DC : modules intended for continuously powered applications, offering a wide DC input range and regulated outputs for the 5 V logic and 24 V auxiliaries. Suitable when the main energy source is a 24 V, 48 V or 60 V DC network.
• Alimentations PS 407 AC/DC : variants designed for mains AC supply, used when the cabinet is connected directly to the AC network via an appropriate transformer or rectifier.

The model 6ES7405-0KA02-0AA0 is part of the PS 405 10A family, making it appropriate for DC-powered installations that require stable 5 V logic rail voltage and an available 24 V auxiliary output.

Industrial applications

This Siemens power module integrates into many automation architectures where uninterrupted power to the controller and I/O cards is critical for process safety and product quality.

• Process continu : chemical, pharmaceutical, and food industries with strict electrical stability requirements for controllers
• Manutention et convoyage : sorting lines, intralogistics, automated warehouse handling
• Traitement de l’eau et utilities : pumping stations, aeration, filtration with redundant control systems
• Machines d’assemblage et d’emballage : robotic cells, case packers, palletizers
• Énergie et infrastructures : technical substations, plant supervision and auxiliary automation

Integration and communication

The 6ES7405-0KA02-0AA0 is designed for direct cabinet integration on a DIN rail. The wide input range 19.2 to 72 V DC tolerates the specified transients, with an inrush current of 18 A over 20 ms at half-height. The regulated outputs 5 V 10 A and 24 V 1 A stabilize the logic and auxiliary supplies respectively, reducing faults related to voltage drops. The 95 W nominal power covers most common S7-400 configurations, while the typical dissipation of 16 W eases thermal management in the cabinet. Compact dimensions 50 x 290 x 217 mm optimize space usage while retaining front access for wiring and preventive maintenance.

Implementation is straightforward for maintenance and project teams: DC input terminal block, internal distribution of standardized voltages, and local supply status indicators typical of the series. The power supply is designed to work with SIMATIC S7-400 CPUs and modules, ensuring continuity of power to control circuits and I/O interfaces. This integration helps reduce unexpected downtime due to input fluctuations and standardizes maintenance references across installed equipment.

Availability and warranty

The Siemens power module 6ES7405-0KA02-0AA0 is available as new supply, exchange unit or repair depending on your lead-time and budget constraints. Each unit is bench-tested before shipment and delivered with warranty. Standard Exchange Industry ensures shipping within 24 to 72 hours to over 150 countries. If you have any doubt about rack compatibility or required capacity, our technicians will assist you to confirm the correct reference and secure your system restart.