PS 955 power supply module for documented S5 central and expansion-unit configurations
Siemens 6ES5955-3NC41 is a SIMATIC S5 PS 955 power supply module documented for S5-135U/S5-155U central units and selected EG 183/185 expansion units. The exact order code appears in Siemens system documentation and approval records, while the Siemens data sheet states that the product is no longer available. It is intended for maintenance of an installed S5 assembly rather than as a universal power supply. Before ordering, verify the full suffix, rack or expansion-unit type, installed wiring, input and output requirements, connectors, adjacent modules, revision, front-panel labeling and available maintenance records.
| Product Condition | Original new |
| Availability | In stock |
| Official Lifecycle | Product is no longer available |
| Warranty | With 1 year warranty |
| Shipping | Worldwide shipping options available |
Condition, availability and warranty are Stockoems commercial information, not manufacturer commitments.
| Manufacturer | Siemens |
| Complete Part Number | 6ES5955-3NC41 |
| Product Type | PS 955 power supply module |
| Series | SIMATIC S5 |
| Documented Controller Family | S5-135U and S5-155U |
| Documented Expansion Units | Selected EG 183 and EG 185 configurations |
| Installation Role | Central or expansion-unit power supply, subject to exact rack documentation |
| Official Availability | Product is no longer available |
| Country of Origin | Germany |
| System Fit | Documented SIMATIC S5-135U/S5-155U central-unit and selected EG 183/185 installations. |
| Module Role | Rack power-supply function within an approved SIMATIC S5 assembly. |
| Maintenance Use | Exact-model spare for installed legacy systems after rack and electrical verification. |
| Migration Use | A system modernization project may require controller, rack, I/O and wiring redesign. |
| Configuration Importance | The complete suffix and installed assembly documentation must be matched before replacement. |
The Siemens data sheet for 6ES5955-3NC41 states that the product is no longer available. This exact wording is used without inventing a different PLM category. Procurement should therefore focus on exact-model identification and documented S5 rack compatibility; a newer power supply must not be assumed to be a drop-in replacement.
It identifies a Siemens SIMATIC S5 PS 955 power supply module documented for legacy central and expansion-unit assemblies.
Siemens system documentation lists it with S5-135U/S5-155U and selected EG 183/185 configurations.
The Siemens data sheet states: Product is no longer available.
Verify the installed nameplate, input supply, output loading, connector and rack documentation for this exact suffix.
No direct interchangeability is claimed. Suffix, rack, electrical ratings, connector and revision must be compared.
Preserve rack drawings, wiring records, module list, maintenance notes and clear label photographs.
Yes. Request front, label, rear connector, rack interface and packaging photographs.
Send us the complete part number, required quantity, destination country and product label photos. Our team will check availability, condition, compatibility requirements and shipping options.
Email: sales6@apterpower.com
WhatsApp: +86 18159889985
Identity, rack compatibility, condition evidence and order coordination for 6ES5955-3NC41.
The complete order code, Siemens records, rack type, installed wiring and module role are reviewed before a replacement decision.
Full-unit, nameplate, control, indicator and rear-connector photographs support exact identity and visible-condition checks.
Protective packaging, connector protection, accessories, shipping documents and tracking are coordinated after order review.
| Model Verification | Check 6ES5955-3NC41, revision, ratings and readable label photos. |
| Rack Review | Record the S5 central or expansion-unit order code, slot position and installed module list. |
| Electrical Review | Compare the input supply, output loading, fusing, grounding and wiring shown in controlled records. |
| Interface Review | Inspect rear connector condition, mechanical keying, front controls and diagnostic indicators. |
| Maintenance Records | Preserve rack drawings, wiring schedules, service notes and replacement history. |
Provide the full suffix, quantity, destination and label photos.
Compare rack, electrical ratings, connector, revision and wiring records.
Review condition, connector protection, packaging and delivery documents.
Send us the complete part number, required quantity, destination country and product label photos. Our team will check availability, condition, compatibility requirements and shipping options.
Email: sales6@apterpower.com
WhatsApp: +86 18159889985
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Linked models open an exact published Stockoems product page. Unlinked entries are retained as model text only.
Send us the complete part number, required quantity, destination country and product label photos. Our team will check availability, condition, compatibility requirements and shipping options.
Email: sales6@apterpower.com
WhatsApp: +86 18159889985
