24 V DC input power supply delivering 5.1 V DC at 14 A for established SIMATIC S5 155H systems.
Siemens 6ES5955-7NC12 is a SIMATIC S5 power supply module for the CC/ZG 155H central controller system. The Siemens technical datasheet identifies a 24 V DC input and a regulated 5.1 V DC, 14 A output for supplying the S5 backplane and installed controller modules.
This exact legacy spare-part module belongs to the high-availability S5 155H platform. Procurement must match the complete order number, rack configuration, input supply, output-current requirement and mechanical format because another S5 power supply cannot be assumed to be electrically or mechanically interchangeable.
| Field | Verified information |
|---|---|
| Manufacturer | Siemens |
| Complete part number | 6ES5955-7NC12 |
| Product lifecycle | No exact lifecycle label stated in the accessible Siemens datasheet |
| PLM effective date | Not stated |
| Official designation | Spare part; SIMATIC S5 power supply for CC/ZG 155H |
| Country of origin | Germany |
| Technical characteristic | Specification |
|---|---|
| System / module | SIMATIC S5 power supply module |
| Target controller | CC/ZG 155H |
| Input voltage | 24 V DC |
| Maximum input current | Up to 7 A |
| Output voltage | 5.1 V DC |
| Rated output current | 14 A |
| Primary function | Backplane and controller-module power supply |
| Installation format | Plug-in S5 central-controller module |
| Official Siemens designation | Spare part |
| Electrical matching requirement | Input supply and 5 V load must match the installed 155H rack |
| Replacement scope | Exact-order-code replacement recommended |
| Dimensions (W × H × D) | 40 × 255 × 205 mm |
| Net weight | 1.35 kg |
| Country of origin | Germany |
Supplies the regulated 5 V system rail used by established high-availability S5 controller hardware.
Supports exact replacement planning for installed plants that continue to operate S5 155H equipment.
Provides a traceable spare option where rack format, output capacity and module identity must match.
The accessible Siemens datasheet for 6ES5955-7NC12 designates the exact product as a Spare part for the SIMATIC S5 CC/ZG 155H, but it does not state a current lifecycle label such as Active, Classic or Discontinued. The page therefore retains only Siemens-confirmed product data and avoids assigning an unsupported lifecycle status.
It is a SIMATIC S5 power supply module for the CC/ZG 155H central controller system.
The Siemens datasheet specifies a 24 V DC input.
It supplies 5.1 V DC at a rated 14 A.
Not without engineering checks. The rack, connector, output capacity and complete order number must match.
The exact accessible Siemens datasheet identifies it as a Spare part but does not provide a current lifecycle label.
Confirm the full part number, 155H rack, input supply, 5 V load, connector condition, dimensions and nameplate.
Send the installed module nameplate, firmware and system configuration for stock verification, compatibility review, warranty terms and worldwide delivery support.
Practical support for identification, sourcing, inspection, packing and global delivery of legacy and current automation components.
Our team reviews the complete part number, revision, application and requested delivery conditions before processing.
Warehouse staff match labels, housing condition, connector state and supplied accessories against the order record.
Components are prepared with protective packing suitable for international industrial-spares transportation.
Complete MLFB, suffix, revision and nameplate details are checked to reduce model-selection errors.
We review the stated controller, rack, bus, firmware and application information supplied with the inquiry.
Available label, housing, connector and packaging photographs can be provided for order confirmation.
Shipment options, export packing and tracking support are coordinated for worldwide industrial customers.
Warranty scope and return conditions are confirmed with the commercial offer for the exact supplied unit.
For cancelled products, sourcing is combined with successor and installed-base compatibility checks.
| Step | What we check | Customer benefit |
|---|---|---|
| 1. Inquiry | Full part number, quantity, destination and required condition | Clear quotation scope |
| 2. Verification | Nameplate, revision, interface and system compatibility details | Lower mismatch risk |
| 3. Confirmation | Availability, lead time, warranty and supporting photographs | Documented purchasing decision |
| 4. Dispatch | Protective packing, shipping documents and tracking | Controlled global delivery |
Please provide the complete part number, quantity, destination country, required condition, installed system, firmware or revision constraints, and any nameplate photographs available.
