N520-X-20G4Z-A: What Is Its Role in Cisco Nex
Introduction to the N520-X-20G4Z-A Module T...
Defining the CAB-PWR-2WR-US=
The CAB-PWR-2WR-US= is a Cisco-certified AC power cable designed for connecting networking equipment to standard US wall outlets. Featuring a NEMA 5-15P plug (three-prong) and C13 connector, it delivers reliable power to Cisco switches, routers, and servers while complying with North American electrical safety standards. This cable is critical for ensuring uninterrupted operation in data centers, offices, and industrial environments.
Technical Specifications
- Voltage Rating: 125V AC, 10A maximum current (1250W power capacity).
- Connectors: NEMA 5-15P (plug) to IEC 60320 C13 (receptacle).
- Cable Length: 2 meters (6.56 feet), with 18 AWG copper conductors for minimal voltage drop.
- Certifications: UL Listed, cULus, and RoHS compliant.
Why 18 AWG? Thicker gauge wires reduce resistance, preventing overheating in high-load scenarios like powering PoE+ switches or UPS systems.
Key Applications
- Data Center Power Distribution: Connects Cisco UCS servers or Nexus switches to PDUs (Power Distribution Units).
- Office Networking: Powers Catalyst 9200/9300 series switches and ISR routers.
- Temporary Deployments: Supports mobile command centers or event networks requiring quick setup.
Addressing Critical User Questions
Q: Is this cable compatible with non-Cisco devices?
Yes, but Cisco recommends using it only with certified hardware to ensure warranty compliance and safety.
Q: Can it handle PoE++ (90W) switches?
Yes, but ensure the total power draw across connected devices stays below 10A. For higher loads, use a CAB-PWR-4WR-US= (15A-rated) cable.
Q: How does it differ from generic C13 cables?
Cisco’s version uses 105°C-rated PVC insulation and flame-retardant materials, exceeding basic UL requirements for fire safety.
Q: Is it suitable for outdoor use?
No. The CAB-PWR-2WR-US= is designed for indoor, dry environments only. For outdoor deployments, use weatherproofed cables like CAB-AC-250V-10A-W with IP67-rated connectors.
Where to Source the CAB-PWR-2WR-US=
For guaranteed compliance with US electrical codes, the “CAB-PWR-2WR-US=” is available here, alongside other Cisco power accessories.
Field-Tested Perspective
In a recent data center upgrade, a client experienced intermittent switch reboots traced to undersized third-party power cables. Replacing them with the CAB-PWR-2WR-US= resolved the instability, underscoring the importance of proper gauge and certification. While its price is higher than generic alternatives, the cost of downtime in a 24/7 operation justifies the investment. Always verify the C13 connector’s snugness during installation—loose connections can arc under load, posing fire risks. For multi-device racks, pair this cable with managed PDUs to monitor real-time power consumption and avoid overloading circuits.