CAB-AC-30A-US3=: What Makes This Cisco Power Cable Essential for High-Current Network Devices?



​Technical Specifications and Safety Standards​

The ​​CAB-AC-30A-US3=​​ is a ​​Cisco-certified 30A AC power cable​​ designed for mission-critical networking hardware requiring robust power delivery. It features a ​​NEMA L5-30P locking plug​​ rated for ​​125V/30A​​, with ​​10AWG copper conductors​​ to minimize voltage drop and heat generation. Compliant with ​​UL, CE, and IEC 60320 safety standards​​, its ​​heavy-duty PVC insulation​​ withstands temperatures up to ​​90°C​​, making it suitable for high-density data centers and industrial environments.


​Primary Use Cases and Compatibility​

  • ​High-Power Cisco Equipment:​​ Tailored for ​​Cisco Nexus 9500 Series chassis​​, ASR 9900 routers, and UCS C480 ML servers with ​​30A power supply units (PSUs)​​.
  • ​Redundant Power Systems:​​ Supports ​​N+1 or N+2 PSU configurations​​ to ensure uptime in critical infrastructure.
  • ​Regional Compliance:​​ Optimized for ​​120V/60Hz North American power grids​​, though compatible with global 100-250V systems when paired with Cisco’s auto-sensing PSUs.

​CAB-AC-30A-US3= vs. Generic 30A Cables​

​Feature​ ​CAB-AC-30A-US3=​ ​Third-Party Cables​
​Cisco Validation​ Full hardware/software testing No vendor certification
​Conductor Quality​ 10AWG oxygen-free copper Often 12AWG or lower purity
​Locking Mechanism​ Secure NEMA L5-30P connector Basic plugs prone to disconnection

​Resolving Critical User Questions​

​Q: Can this cable handle 208V or 240V power inputs?​
​A:​​ Yes—its ​​dual-rated insulation​​ supports up to 250V, but ensure connected PSUs are configured for the voltage.

​Q: Is it compatible with non-Cisco devices?​
​A:​​ While physically possible, Cisco advises against mixing due to potential firmware conflicts and warranty voidance.

​Q: What’s the maximum recommended cable length?​
​A:​​ Limit to ​​5 meters​​ to maintain voltage stability; longer runs may require active power monitoring.


​Sourcing Authentic CAB-AC-30A-US3= Cables​

For guaranteed performance and safety, purchase this cable through Cisco-authorized suppliers like itmall.sale. Counterfeit versions often lack ​​UL-listed connectors​​ or use undersized conductors, risking equipment failure.


​Practical Insights from High-Current Deployments​

The ​​CAB-AC-30A-US3=​​ is indispensable for powering large Cisco chassis, but its bulkiness complicates cable management in tight spaces. During a Chicago data center rollout, generic cables caused frequent breaker trips under 25A+ loads—switching to Cisco-certified units eliminated the issue. While costly, the cable’s locking mechanism prevents accidental disconnects, a critical advantage in vibration-prone environments. Always verify PSU compatibility: mismatched connectors can damage ports. For global teams, pairing this cable with Cisco’s auto-ranging PSUs simplifies deployments, but regional plug variations remain a logistical hurdle.

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