6ES7407-0DA02-0AA0 - Power Supply Module - SIEMENS

SIEMENS power supply 6ES7407-0DA02-0AA0, SIMATIC S7-400 PS407

The power supply with part number 6ES7407-0DA02-0AA0 belongs to the PS407 series of the SIMATIC S7-400 platform by SIEMENS. Designed for industrial automation architectures, it delivers a stable logic voltage for the backplane and the modules of the S7-400 chassis, rated for operation up to +60°C. Its wide-range input 120/230 V AC or DC simplifies standardisation of installations and maintenance spares across different sites. The 5 V DC, 4 A output is intended to power the CPU logic and I/O cards, while a 24 V DC auxiliary output serves the system's ancillary needs. Integrated short-circuit protection enhances service safety, and the optional backup battery ensures preservation of sensitive internal functions in the event of mains loss. The compact form factor with DIN rail mounting facilitates close integration with programmable logic controller equipment.

Technical specifications

• Référence constructeur : 6ES7407-0DA02-0AA0
• Gamme : SIMATIC S7-400, série d’alimentation PS407
• Constructeur : SIEMENS
• Type : Module d’alimentation pour châssis S7-400, format compact
• Tension d’entrée : 120/230 V CA ou CC, large plage
• Sortie logique : 5 V CC, courant nominal 4 A
• Sortie auxiliaire : 24 V CC
• Protections intégrées : contre les courts-circuits
• Option : batterie de secours pour maintien des fonctions internes
• Montage : rail DIN, intégration en armoire
• Plage thermique : fonctionnement jusqu’à +60°C
• Dimensions : 25 x 217 x 290 mm

Overview of the SIMATIC S7-400 range

The SIMATIC S7-400 platform is a family of programmable logic controllers intended for medium to large-scale installations. The PS407 power supply modules are designed to provide the 5 V backplane logic voltage and ensure a regulated supply to CPUs and I/O modules, a prerequisite for controller availability. The 120/230 V AC or DC input supports interoperability in heterogeneous environments, including when the main supply comes from backup networks or DC sources. The PS407 series is engineered to meet the demands of continuous and discrete processes, delivering voltage regulation compatible with chassis equipment and integrating protection features that reduce the risk of unplanned shutdowns. The backup battery option complements the installation's resilience strategy in case of power dips or outages.

Industrial applications

This SIEMENS power supply integrates into many automation systems where a programmable logic controller SIMATIC S7-400 controls the process. Common uses include:

• Continuous processes and utilities: boiler supervision, water treatment, energy production with high availability requirements
• Packaging and filling: coordination of equipment on bagging lines, palletising and quality control
• Material handling and conveying: conveyor management, sorting, accumulation and intralogistics distribution
• Special machinery: assembly cells, robotics, test benches with dense I/O
• Process industries: food, chemical, paper, where PLC power stability conditions process integrity

Integration and communication

The PS407 module is installed in the control cabinet close to the SIMATIC S7-400 chassis. DIN rail mounting and the slim profile ease placement and airflow. The 5 V DC, 4 A output is sized to power system logic, while the 24 V DC output covers internal auxiliary needs of the rack. The universal input 120/230 V AC or DC allows operation on different power networks or secured DC supplies. During engineering, it is recommended to verify the 5 V current budget required by the CPU and I/O configuration and to check remaining capacity against planned system growth.

The optional backup battery maintains certain internal PLC functions during mains outages, for example data retention or timestamping, depending on the chosen configuration. Integration follows good cabinet wiring practices, with separation of high and low voltage circuits, proper grounding and upstream protection. Respecting ventilation clearances is recommended to ensure operation up to +60°C. In complex automation architectures, this power supply sits upstream of the controller communication equipment without affecting fieldbuses or plant networks handled by the S7-400’s dedicated cards and modules.

Availability and warranty

The SIEMENS part 6ES7407-0DA02-0AA0 is offered by Standard Exchange Industry as new supply, exchange unit or repair depending on your project constraints. Each unit is bench-tested and delivered with a warranty. Shipping is available within 24 to 72 hours to over 120 countries. In case of a production stop, our technical team supports you to verify compatibility with your SIMATIC S7-400 chassis, assess the current budget and secure the restart of your line.