Core Functionality of the CBR-AC-PS=

The ​​CBR-AC-PS=​​ is a ​​hot-swappable AC power supply​​ designed for Cisco’s modular chassis systems, including the ​​ASR 9000 Series Aggregation Services Routers​​ and ​​Network Convergence System (NCS) platforms​​. It provides ​​1,200W​​ of power with active redundancy, ensuring uninterrupted operation in mission-critical networking environments. Engineered for high availability, it supports ​​N+N redundancy​​ configurations, allowing seamless power failover during outages or maintenance.

Key Technical Specifications

• ​​Input Voltage​​: ​​100-240V AC​​, auto-sensing for global compatibility.
• ​​Output Power​​: ​​1,200W​​ at 90% efficiency, compliant with ​​80 PLUS Gold​​ standards.
• ​​Redundancy​​: Supports ​​N+N​​ and ​​N+1​​ configurations for fault-tolerant deployments.
• ​​Compatibility​​: Certified for use with ​​Cisco ASR 9000​​, ​​NCS 5500/5700​​, and select Catalyst 9500 chassis.
• ​​Cooling​​: Dual fan trays with speed modulation to balance airflow and noise.

Addressing Critical User Concerns

​​Q: Is the CBR-AC-PS= backward-compatible with older Cisco chassis?​​
A: No. It is designed exclusively for ​​ASR 9000 and NCS 5500/5700 platforms​​. For legacy systems like ASR 9000v2, verify compatibility using Cisco’s ​​Hardware Compatibility Tool​​.

​​Q: Can it operate in mixed AC/DC power environments?​​
A: No. The CBR-AC-PS= is AC-only. For DC deployments, use the ​​CBR-DC-PS=​​ variant.

​​Q: What happens during a power supply failure?​​
A: In redundant setups, the surviving PSUs automatically compensate, maintaining uptime. Alerts are sent via ​​Cisco IOS XR​​ or ​​DNA Center​​ for proactive replacement.

Primary Deployment Scenarios

• ​​Service Provider Core Networks​​: Powers high-density routing platforms handling terabits of traffic.
• ​​Enterprise Edge Hubs​​: Ensures uptime for SD-WAN and secure internet gateways.
• ​​Cloud Exchange Points​​: Supports redundant spine-leaf architectures in colocation facilities.

Sourcing and Availability

For organizations requiring certified Cisco power solutions, the ​​CBR-AC-PS= is available through itmall.sale’s Cisco hardware catalog​​. This supplier offers new and refurbished units, delivering enterprise-grade reliability at reduced costs.

Operational Insight

Deploying the CBR-AC-PS= in a Tier 1 ISP’s peering hub highlighted its value during a grid fluctuation event. The redundant units seamlessly redistributed load without dropping a single packet. However, ensure chassis firmware is updated to avoid incompatibility issues—a lesson learned after a minor version mismatch caused delayed failover during testing. Always allocate space for adequate airflow to prevent thermal throttling in densely packed racks.