SIMATIC S7-400 PS405 20 A system power supply / 6ES7405-0RA02-0AA0

SIMATIC S7-400 PS405 20 A system power supply. The named current applies to the 5 V backplane output; 24 V backplane current has a separate limit. May 2017 catalogue scope; verify configuration and current supply before ordering.

Manufacturer part number: 6ES7405-0RA02-0AA0
Brand: Siemens
Category: PLC and HMI
Catalog status: Request a quotation

Technical specifications

Controller family: SIMATIC S7-400
Module designation: PS405
Rated input: 24/48/60 VDC
Maximum 5 V backplane output (A): 20
Maximum 24 V backplane output (A): 1
Redundant variant: No
Required slots: 2
Width (mm): 50
Height (mm): 290
Depth (mm): 217
Approximate weight (g): 1300
Document pages: PDF 134, 135, 137
Reviewed document edition: ST 400 / May 2017 / E86060-K4678-A151-A1-7600
Module notes: Separate backplane rail limits; not a general-purpose external 24V load supply. Redundant operation requires supported system configuration; SIPLUS environmental ratings are not inherited.
DC input range: 19.2..72 V; dynamic limits 18.5..75.5 V

Manufacturer technical catalog · ST 400 / May 2017 / E86060-K4678-A151-A1-7600 · en · PDF · ST 400 / May 2017 / E86060-K4678-A151-A1-7600Manufacturer source: Siemens · Model explicitly covered in family document · Covered models: 6ES7405-0RA02-0AA0 · Checked: 2026-10-22Official manufacturer source

This sheet provides a quick technical summary. For design, installation and final selection, review the latest official manufacturer documentation and verify the complete part number.