Description
Product Introduction & Engineering Value
The FSP400-60PFI is a 400 W AC power supply used in industrial-computing applications, particularly as an OEM power supply for Siemens industrial PCs. Current industrial-parts references identify it with Siemens IPC547C and IPC847 systems and list the input as 100–240 VAC, 50/60 Hz.
This is an important distinction for procurement. It is an FSP Group power supply, even though many spare-parts listings market it as a Siemens IPC component. The replacement should therefore be matched by the complete FSP model, electrical characteristics, connector arrangement, and the target IPC configuration.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | FSP Group Inc. / Fortron |
| Model | FSP400-60PFI |
| Power Rating | 400 W |
| Input Voltage | 100–240 VAC |
| Input Frequency | 50/60 Hz |
| Input Current | 6–3 A |
| Power Supply Type | AC/DC switching PSU |
| Application | Industrial PC / server power |
| Associated Siemens Systems | IPC547C, IPC847 |
| Associated P/N | 9PA4009300 |
| Form Factor | Verify against installed IPC chassis |
| Output Rails | Verify from the unit label before replacement |
| Connector Configuration | Verify against the original PSU |
| Replacement Status | Legacy / industrial spare |
The 400 W rating, 100–240 VAC input, 50/60 Hz operation, and 9PA4009300 association are supported by current industrial spare-parts listings.
Important: Do not infer the individual DC rail ratings from the 400 W headline specification. The available sources reviewed here do not provide a sufficiently authoritative complete output-rail table for this exact unit.
Field Application & the “Trench” Experience
A failed industrial-PC power supply often produces symptoms that look like a motherboard or storage failure: unexpected shutdowns, boot failures, intermittent resets, or a completely dead IPC.
With an FSP400-60PFI, the first maintenance question should be whether the replacement is electrically and mechanically identical to the original unit. This matters particularly in Siemens IPC installations, where the FSP unit may be cataloged under both its FSP model and Siemens-related spare references.
Typical applications include:
- Siemens IPC547C industrial PCs
- Siemens IPC847 industrial computers
- Legacy machine-vision and SCADA computers
- Industrial control-system operator and engineering stations
Industrial spare-parts documentation specifically lists the FSP400-60PFI as a 400 W PSU for Siemens IPC547C and IPC847 systems.

400-60PFI

400-60PFI
Transparency SOP: QA & Testing
For New Surplus or Refurbished FSP400-60PFI stock:
1. Identity check
Verify the FSP model, rating label, serial number, and any secondary number such as 9PA4009300.
2. Mechanical inspection
Inspect the fan, enclosure, mounting points, connectors, wiring, and AC input section. Look for corrosion, damaged insulation, bent contacts, or evidence of overheating.
3. Input test
Verify controlled operation across the appropriate AC input range. Do not perform an improvised high-voltage test without suitable test equipment and procedures.
4. Output-load test
A proper QA process should verify DC outputs under controlled load rather than simply confirming that the fan spins.
5. IPC compatibility test
Where possible, install the PSU in the intended Siemens IPC platform and verify boot-up, sustained operation, and system stability under load.
The Veteran’s Tech Trap Guide
⚠️ Trap #1 — Calling it a Siemens-manufactured PSU.
The unit is identified as an FSP Group power supply. Siemens association primarily relates to the industrial PC systems in which the unit is used.
⚠️ Trap #2 — Assuming every 400 W PSU is interchangeable.
A 400 W rating does not guarantee identical output rails, connectors, dimensions, airflow, or protection characteristics.
⚠️ Trap #3 — Testing only for “power on.”
A PSU can start an IPC and still fail under sustained load. For an industrial computer, load testing is considerably more meaningful than a no-load voltage check.
PRO TIP: For a replacement RFQ, provide both FSP400-60PFI and the Siemens IPC model from which the original PSU was removed. A photograph of the PSU label and connectors is even better.
Dynamic FAQ
What is the FSP400-60PFI?
The is a 400 W AC/DC power supply manufactured by FSP Group/Fortron and used in industrial-computing applications. It is associated with Siemens IPC547C and IPC847 systems.
What is the input voltage?
The documented input is 100–240 VAC, with 50/60 Hz operation and an input-current range of approximately 6–3 A.
Is FSP400-60PFI used in Siemens industrial PCs?
Yes. Multiple industrial spare-parts references specifically associate the model with Siemens IPC547C and IPC847 industrial PCs.
Is 9PA4009300 the same part?
9PA4009300 is listed as an associated part number for FSP400-60PFI by industrial spare-parts sources. Confirm the number on the actual unit before treating it as an exact interchange.
Is New Surplus FSP400-60PFI acceptable?
Yes, provided the unit is genuinely unused, the complete model and electrical ratings match, and the PSU passes controlled output/load testing. Current spare-parts suppliers list New and Refurbished availability for this model.
What warranty should I request?
For New Surplus or refurbished stock, request written coverage for startup, all specified DC outputs, operation under load, fan operation, and IPC compatibility. Also ask whether the actual unit supplied underwent load testing or only a basic power-up test.




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