NCS2K-USB3-CBL-2=: Technical Specifications,
Functional Role of the NCS2K-USB3-CBL-2= in Cisco...
Defining the C9K-PWR-CAB-AC-SA=
The Cisco C9K-PWR-CAB-AC-SA= is a specialized AC power cable designed for Catalyst 9000 Series Switches equipped with 3kW or higher power supplies. This 15-amp cable ensures compliant power delivery between the switch’s PSU and the AC mains, tailored to meet Cisco’s engineering specifications for safety and performance.
Key Technical Specifications
- Connector Types: C19 (PSU-side) to C20 (outlet-side), rated for 250V AC and 15A continuous load.
- Cable Length: 3 meters (9.8 feet), providing flexibility in rack installations with distant PDUs.
- Safety Compliance: UL/CSA certified, with 105°C temperature rating for high-current environments.
- Compatibility: Works exclusively with Catalyst 9300/9400/9500 switches using C9K-PWR-3KWAC or C9K-PWR-1500WAC power supplies.
Why Use Genuine C9K-PWR-CAB-AC-SA= Cables?
| Aspect | Cisco C9K-PWR-CAB-AC-SA= | Generic C19/C20 Cables |
|---|---|---|
| Voltage Drop | <2% at full load (validated) | 3-5% (risk of brownouts) |
| Warranty Compliance | Maintains Cisco hardware warranties | May void warranty |
| Flammability Rating | UL FT1 fire-resistant jacket | Often PVC-only |
Critical Use Cases
- High-Power PoE++ Deployments: Safeguards power delivery to C9300-48UXM switches running 30W PoE++ devices.
- Data Center Redundancy: Supports N+N PSU configurations without cable overheating risks.
- Industrial Environments: Resists oil, moisture, and abrasion in manufacturing facilities.
Installation Guidelines
- Avoid Daisy-Chaining: Directly connect to the PDU; do not use power strips.
- Strain Relief: Secure excess cable length with hook-and-loop straps to prevent connector stress.
- Grounding Verification: Ensure PDU grounding matches Cisco’s GR-1089-CORE ESD standards.
Cost and Sourcing Strategies
While new cables ensure full warranty coverage, enterprises can reduce expenses by 50-70% with certified refurbished C9K-PWR-CAB-AC-SA= units. For example, the “C9K-PWR-CAB-AC-SA=” link offers factory-tested cables with matching UL certifications and 6-month warranties.
Real-World Observations
In a recent hospital deployment, generic cables caused intermittent power drops in Catalyst 9300 switches managing critical IoT devices. Switching to genuine C9K-PWR-CAB-AC-SA= units eliminated these issues, proving that even “mundane” components impact uptime. For network architects, specifying Cisco-certified cables isn’t about loyalty—it’s about eliminating variables in complex power chains.