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Entry type: Product note Entry ID: 23678807, Entry date: 07/21/2006

New 20 A Power Supply for S7-400 PLCs Released for Delivery

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A new 20 A power supply is now available for SIMATIC S7-400 PLCs.
The width of the new module has been decreased from 75 mm to 50 mm.

Overview of new and existing 20A power supplies:

Order No.

Power Supply



PS407 20A, 85-264V AC / 88-300V DC



PS407 20A, 85-264V AC / 88-300V DC



PS 405 20A, 24/48/60V DC, wide range


The documentation of the new power supplies is included in the user manual "S7-400 Automation System, Assembling, Module Data" as from edition 04/2006; It is also available for downloading under entry ID: 1117740


To configure the new PS modules we recommend STEP 7 version 5.4 or higher. If you use an earlier version of STEP 7 we recommend prior installation of the Hardware Support Package (HSP). It can be downloaded directly via STEP 7 from the Internet; See entry ID: 23183356. If you have no Internet connection on your engineering station you can download the current HSP under entry ID: 23183356. Alternatively you can enter the order no. of the corresponding predecessor type in your configuration and then acknowledge the warning note during loading of the configuration.

Please get in touch with your SIMATIC contact at your local Siemens Office if you have any further questions.

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