6ES7405-0KR00-0AA0 - Power Supply Module - SIEMENS

Siemens power supply module 6ES7405-0KR00-0AA0, SIMATIC S7-400

The power supply module Siemens 6ES7405-0KR00-0AA0 is part of the SIMATIC S7-400 family, a series of programmable controllers designed for medium to large industrial installations. This PSU delivers power to the CPUs and input/output cards via the backplane, providing voltage stability engineered for continuous production environments. It accepts a wide-range input of 24/48/60 V CC, simplifying integration into existing power architectures. Outputs include 5 V CC / 10 A for internal logic and an auxiliary 24 V CC output. The mechanical form factor is compatible with S7-400 racks, with a depth of 217 mm, ensuring proper fit within the series chassis. This module meets the availability, reliability and maintainability requirements expected by maintenance teams and system integrators in B2B environments.

Technical specifications

• Manufacturer reference : 6ES7405-0KR00-0AA0
• Range : SIMATIC S7-400
• Manufacturer : Siemens
• Type : Rack power supply module for PLC
• Input voltage : 24/48/60 V CC
• Logic output voltage : 5 V CC, rated current 10 A
• Auxiliary output : 24 V CC
• Mechanical depth : 217 mm
• Mounting : power supply slot of SIMATIC S7-400 chassis
• Customs code : 85044090
• SEI warranty : up to 24 months depending on the selected service

Overview of the SIMATIC S7-400 range

The SIMATIC S7-400 series is Siemens' PLC platform engineered for continuous processes, complex production lines and distributed architectures. It is known for its modularity, high I/O density, robust power supplies and long service life in deployed systems. S7-400 power modules deliver the voltage levels required by internal logic and units connected to the backplane, ensuring a stable current reserve for critical CPUs and modules. This architecture supports high availability requirements, with standardized mechanical and electrical integration within the family chassis.

• Process applications : control of continuous processes, dosing lines, production supervision systems requiring a stable logic supply tolerant to DC network disturbances.
• Discrete applications : assembly machines, material handling, packaging, where PLC availability and internal voltage stability are critical to throughput and quality.

The 6ES7405-0KR00-0AA0 model belongs to the family of power modules dedicated to S7-400 chassis, featuring a 24/48/60 V CC input and 5 V CC, 10 A and 24 V CC outputs, designed for the demands of industrial automation architectures.

Industrial applications

This Siemens power supply module integrates into many industrial environments where PLC reliability is paramount:

• Chemical and pharmaceutical processing : powering CPUs and I/O cards in S7-400 bays controlling dosing, reactions and primary packaging.
• Food & beverage : bottling lines, synchronized conveying, inline quality control, requiring stable 5 V logic supply.
• Automotive and assembly : robot cells and assembly benches where continuous power ensures cycle repeatability.
• Utilities management : control of pumps, compressors and industrial HVAC with S7-400 PLCs at the core of supervision.
• Pulp & paper, textile, steel : continuous lines and thermal processes where internal voltage stability affects sequence precision.

Integration and commissioning

The 6ES7405-0KR00-0AA0 fits directly into the designated power slot of SIMATIC S7-400 chassis. The 24/48/60 V CC input connection and backplane interfaces follow the series' standard layout, simplifying replacement during corrective maintenance. No software configuration is required for commissioning the power module; the distribution of 5 V CC and 24 V CC is determined by the rack architecture and the connected module load.

Integration should follow Siemens' recommendations for S7-400 chassis, functional grounding and DC wiring. Mechanical compatibility with the 217 mm depth ensures proper alignment and ventilation as specified by the manufacturer. During upgrades or replacements, keeping wiring references and cabinet schematics reduces downtime and facilitates requalification of the installation.

Availability and warranty

The Siemens power supply module 6ES7405-0KR00-0AA0 is offered as new or refurbished supply, as well as in standard exchange or repair depending on the condition of your equipment. Each refurbished unit is bench-tested to validate voltage levels and essential functions. Standard Exchange Industry guarantees shipment within 24 to 72 hours to over 120 countries. This product benefits from a warranty of up to 24 months depending on the chosen service. If you have any doubts about compatibility with your S7-400 architecture, our technical team will assist to confirm the reference and secure the recommissioning of your line.