Features:
- DC-fed S7-400 supply: PS 405 serves racks built around a 24, 48 or 60 V DC source rather than an AC mains feed.
- Two backplane rails: The module feeds both rack voltage paths, so the station load must be considered across both rails.
- Short-interruption support: Stored energy buffers a brief input-voltage dip; sustained loss still requires a suitable DC supply strategy.
For a DC-powered SIMATIC S7-400 station, 6ES7405-0KA02-0AA0 is a PS 405 10 A power supply rather than a CPU or field I/O module.
Its role is to energize the rack backplane, including the 5 V logic rail and the auxiliary 24 V rail used by the station.
For an existing cabinet, the DC source, module-space allowance and expected rack load define the selection before installation.
Apter Power can help source Siemens 6ES7405-0KA02-0AA0 SIMATIC S7-400 PS 405 power supply documentation and prepare an exact-model quotation.
Siemens 6ES7405-0KA02-0AA0 SIMATIC S7-400 PS 405 power supply Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, software and batteries are not included unless expressly listed in the offered item description. Prices are quoted in USD.
- DC source: A 24, 48 or 60 V DC cabinet feed suits this PS 405 variant; an AC-fed station requires a different supply family.
- Supply envelope: Siemens permits 19.2 to 72 V DC under static conditions, making source variation a design consideration rather than an assumed nominal-only match.
- Current allowance: The input draws different rated currents at the three nominal voltages; upstream conductors and protective devices should suit the chosen feed.
- Startup demand: The specified inrush peak is higher than steady-state draw, so protective-device selection should allow for energization.
- Rack space: This 10 A PS 405 occupies two S7-400 slots, which matters when replacing a one-slot power supply.
- Logic supply: The 5 V backplane rail serves the station modules without a minimum base-load requirement.
- Auxiliary rail: The 24 V backplane path is rated separately and is idling-proof; it should not be confused with the external DC input.
- Electrical separation: Siemens specifies primary-to-secondary separation and protective-conductor class I, shaping the cabinet grounding arrangement.
- Overload recovery: For this PS 405, a short circuit or overload leads to shutdown followed by an automatic restart attempt after the fault clears.
- 24 V rail: When overload drives the rail below its threshold, repeated disconnection and reconnection can appear until the load recovers.
- 5 V rail: A sustained 5 V overload has a different CPU consequence, so it should not be diagnosed as only a transient 24 V issue.
- Diagnostic cues: The supply LEDs and the CPU diagnostic buffer help distinguish a backplane power fault from a normal operating state.
- SIMATIC S7-400 stations: This PS 405 provides rack backplane power in a controller station built for DC input.
- 24/48/60 V cabinet systems: One wide-range supply type can be selected where the installed cabinet uses one of Siemens’ stated DC supply levels.
- Two-rail rack loads: Stations requiring both the 5 V logic rail and the separate 24 V backplane rail can be assessed against this module’s output ratings.