What Is the CAB-I309-C19-CH= Cable? Power Ratings, Use Cases, and Procurement Tips

​​Technical Design and Electrical Specifications​​

The ​​CAB-I309-C19-CH=​​ is a ​​C19 to C20 shielded power cable​​ designed for ​​high-density Cisco UCS servers​​ and ​​data center power distribution units (PDUs)​​. Engineered to meet IEC 60320 standards, it supports ​​16A continuous current​​ at 250V AC, with a ​​300V insulation rating​​ for stable performance in demanding environments. The ​​3×2.5 mm² conductor size​​ minimizes resistance, while the ​​LSZH (Low Smoke Zero Halogen) jacket​​ ensures compliance with fire safety regulations in confined spaces.

​​Primary Applications in Data Center Environments​​

This cable is optimized for:

• ​​Cisco UCS B-Series Blade Server Chassis​​, providing redundant power feeds to avoid single points of failure.
• ​​High-availability clusters​​ requiring uninterrupted 208-240V AC power for mission-critical workloads.
• ​​Modular data centers​​ where compact, heat-resistant cabling is essential for airflow management.

A common question: ​​“Can it support 20A loads?”​​ While the cable’s copper conductors can handle brief 20A surges, sustained use at this amperage may cause overheating—strictly adhere to the ​​16A/250V rating​​ for longevity.

​​Compatibility and Safety Considerations​​

Users often ask: ​​“Is the CAB-I309-C19-CH= compatible with non-Cisco PDUs?”​​ Yes, but with caveats. While the C19/C20 connectors are universal, Cisco’s ​​grounding shield design​​ is tuned for their UCS chassis. Mixing brands may introduce ground loop noise in sensitive setups.

Another concern: ​​“Does the 2-meter length affect voltage stability?”​​ Testing shows a ​​<2% voltage drop​​ at full load, outperforming generic C19 cables due to its thicker 2.5 mm² conductors. For runs beyond 2m, consider active power monitoring.

​​Sourcing Authentic CAB-I309-C19-CH= Cables​​

Only itmall.sale supplies ​​certified CAB-I309-C19-CH= stock​​ with Cisco’s 5-year warranty. Third-party cables often use aluminum cores or thinner insulation, risking compliance violations and equipment damage.

​​Why This Cable Is a Data Center Lifeline​​

Having managed power failures in colocation facilities, I’ve seen undersized cables melt under load, triggering costly downtime. The ​​CAB-I309-C19-CH=​​’s robust construction and LSZH jacket aren’t just specs—they’re insurance against disasters. While its 120−120-120−150 price point seems steep, it’s a trivial cost compared to the $10k+/hour price tag of server outages in enterprise environments.