Cooling Solution for Legacy S5 Power Supply Units
The 6ES5988-3NB41 serves as a dedicated fan replacement kit for specific SIMATIC S5 power supply modules. Engineers use this thermal management component to restore forced-air cooling in aging S5-155U systems. Consequently, the kit prevents overheating and protects sensitive power electronics from heat degradation.
Compatible Power Supply Models
This fan kit specifically supports four power supply variants within the SIMATIC S5 family. The compatible models include 6ES5 955-3LC4X, 6ES5 955-3LF4X, 6ES5 955-3NC4X, and 6ES5 955-3NF4X series. Therefore, technicians must verify their power supply model number before ordering.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 6ES5988-3NB41 |
| Manufacturer | Siemens |
| Series | SIMATIC S5 |
| Product Type | Fan Replacement Kit |
| Operating Voltage | 24 VDC |
| Cooling Type | Forced Air Axial Fan |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 70°C |
| Protection Class | IP54 |
| Net Weight | 0.611 kg |
| Package Dimensions | 137 × 250 × 53 mm |
| Electrical Connector | Plug-in type, internal power rail |
Installation and Maintenance
The plug-in connector draws power directly from the internal distribution rail. Accordingly, the replacement process requires no external wiring or complex configuration. Regular fan maintenance extends the operational lifespan of legacy S5 automation systems. Dust accumulation and bearing wear represent the primary causes of fan failure in industrial environments.
Details
| Weight | 0.72 kg |
|---|---|
| Dimensions | 325 × 168 × 8 mm |
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