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Siemens SITOP: single-phase power supplies (root 6EP13)
SITOP power supplies provide the 24 V DC voltage that feeds PLCs, panels, sensors and actuators in almost every automation cabinet. Versions with single-phase input (120 – 230 V AC) are the most common. If the power supply fails, everything connected to it switches off.
The E-Repair catalogue covers about 42 part numbers of single-phase SITOP power supplies.
⚙️ Product lines in the catalogue
- SITOP smart: compact power supplies for standard automation, for example 120 W and 240 W.
- SITOP modular: power supplies with extended functions, suitable for configurations with add-on modules.
- PSU100C, PSU100L, PSU100S, PSU100D, PSU200M: DIN rail power supply lines in different classes.
- PSU8200: high-end power supplies, for example 20 A.
- SITOP POWER: name of earlier generations, also in "Special Line" versions.
- LOGO!Power: small power supplies for the LOGO! mini PLC.
| Root | Content | Part numbers |
| 6EP1331, 6EP1332 | Low power: LOGO!Power, PSU100C, SITOP POWER | 8 |
| 6EP1333 | Power supplies up to about 5 – 8 A: SITOP smart, PSU100, PSU200M, SITOP POWER | 14 |
| 6EP1334 | Power supplies of about 10 A: SITOP smart, PSU100, PSU200M, SITOP POWER | 16 |
| 6EP1336, 6EP1337 | 20 A and 40 A power supplies: SITOP modular and PSU8200 | 4 |
👉 6EP1331-1SH01 – LOGO!Power 24 V/1.3 A
👉 6EP1333-1AL11 – SITOP power 5 A
👉 6EP1334-1AL11 – SITOP power 10 A
👉 Search the catalogue: 6EP1333 · 6EP1334 · 6EP1336
⚠️ Typical faults
- exhausted electrolytic capacitors, with unstable or missing output voltage
- input components damaged by mains overvoltages
- overheating in poorly ventilated cabinets
- signalling LEDs and status contacts no longer working
🛠️ E-Repair services for single-phase SITOP power supplies
As Approved Partner Siemens – Industry Services, E-Repair supports production continuity:
🔧 Component-level repair in E-Repair's certified in-house laboratory, with diagnosis and repair where technically feasible.
♻️ Refurbishment with replacement of components subject to ageing and functional testing according to the agreed scope of work.
🚚 Advance replacement with a refurbished or new product, if available in stock and after a compatibility check.
🛠️ On-site and remote technical assistance for diagnosis and recommissioning.
✅ Standard 12-month warranty on the services for which it applies, extendable up to 24 months under the applicable conditions.
❓ Frequently asked questions
✔️ Is it worth repairing a SITOP power supply?
It depends on the model: for larger sizes or discontinued versions repair is often worthwhile; for small models still available, replacement may be better. E-Repair assesses each case.
✔️ Can I replace it with a more recent model?
Often yes, after checking output voltage and current, input, dimensions and signalling contacts.
✔️ What is needed for the diagnosis?
The full part number from the rating plate and a description of the fault.
📚 Further reading
👉 SITOP range · 👉 SITOP three-phase and DC/DC · 👉 SITOP UPS and add-on modules
ℹ️ The information provided is general and indicative. Before purchase, installation or commissioning, check the data against the official Siemens documentation or contact E-Repair.
