6ES7405-0RA02-0AA0 - Power Supply Module - SIEMENS

Siemens power module 6ES7405-0RA02-0AA0 - PS 405 SIMATIC S7-400

The power module 6ES7405-0RA02-0AA0 belongs to the PS 405 series designed for SIMATIC S7-400 programmable controllers by Siemens. Engineered to deliver stable voltages to the backplane and the automation cabinet peripherals, it provides 5 V DC and 24 V DC outputs with an available power of 168 W. Its input range DC 24/48/60 V allows integration with existing architectures fed by rectifier, battery or plant DC networks. This module is intended for maintenance teams, integrators and operators seeking a reliable replacement solution compatible with a PLC S7-400, offering straightforward installation and controlled service continuity. It stands out for its native compatibility with the S7-400 series, simultaneous availability of both 5 V and 24 V rails, and an optimized mechanical form factor for chassis in this range, reducing downtime during line interventions.

Technical specifications

• Manufacturer reference : 6ES7405-0RA02-0AA0
• Range : SIMATIC S7-400, PS 405 series
• Manufacturer : Siemens
• Type : Power module for programmable controller
• Input voltage : DC 24/48/60 V
• Input current : 7 A / 3.2 A / 2.5 A depending on voltage
• Output voltages : 5 V DC and 24 V DC
• Available power : 168 W
• Dimensions : 50 x 290 x 217 mm
• Weight : 1300 g
• Compatibility : SIMATIC S7-400 PLC systems

Overview of the SIMATIC S7-400 range

The SIMATIC S7-400 series is intended for centralized and distributed automation applications in demanding industrial environments. It equips process installations, continuous manufacturing and infrastructures where availability is a priority. The PS 405 power modules play a central role by supplying the DC rails required by the CPU, I/O cards and communication modules of the system. Their mechanical format and connections are designed for direct integration into S7-400 chassis, simplifying maintenance and like-for-like replacement.

• Modular architecture : power, CPU, I/O and communication combined within a rack for controllable scalability
• Dedicated power : the PS 405 series provides the internal voltages to the bus and associated S7-400 hardware, ensuring the system's electrical stability

The 6ES7405-0RA02-0AA0 model follows this design philosophy, with an input DC 24/48/60 V accommodating diverse infrastructures and 5 V and 24 V outputs intended respectively for logic and peripherals. The 168 W power reserve covers a wide range of S7-400 rack configurations while reducing sizing constraints during maintenance operations.

Industrial applications

This Siemens power module integrates into many industrial environments driven by SIMATIC S7-400 controllers:

• Continuous processes : chemical, food & beverage, pharmaceutical, stabilizing 5 V and 24 V rails for CPUs and I/O
• Material handling and intralogistics : conveyors and stacker cranes supervised by S7-400 PLCs
• Packaging and packing : multi-station lines requiring reliable automation power
• Water and utilities : pumping stations, treatment and distribution with DC power supply
• Robot cells and CNC : powering the PLC rack interfacing with motion and safety equipment

Integration and communication

The 6ES7405-0RA02-0AA0 is installed directly into the S7-400 chassis. The DC 24/48/60 V input allows connection to a plant DC network, a rectifier or a battery source, provided the specified characteristics are respected. The 5 V and 24 V outputs feed the internal logic and system peripherals, simplifying cabinet architecture by reducing the number of separate power modules to maintain.

Commissioning is straightforward, requiring no programming and focusing on wiring in accordance with good industrial control cabinet practices. The 50 x 290 x 217 mm form factor and mass of 1300 g make handling easy during replacement while ensuring consistent fit with other modules in the SIMATIC S7-400 rack. This approach reduces downtime and improves the reliability of production restart after intervention.

Availability and warranty

This Siemens power module 6ES7405-0RA02-0AA0 is offered refurbished or as an exchange unit depending on availability, bench-tested and supplied with a warranty. Standard Exchange Industry provides shipping within 24 to 72 hours to over 120 countries. In case of line stoppage or obsolescence, our technical team will help confirm compatibility with your SIMATIC S7-400 configuration and determine the best option, whether supply, exchange unit or repair of your existing module.