Cisco A900-PWR550-A Full English Description

Product Overview

Key Features

1. 550 Watt Continuous Rated Output
   Delivers maximum 550W regulated +12VDC power capacity. Supports 1+1 redundant configuration with automatic dynamic load sharing to avoid single-point power outages.

Note: This PSU is only suitable for low-power router configurations. For setups with high-power RSP modules (A900-RSP3C-400-S), the higher-capacityA900-PWR1200-Ais recommended.

1. Universal Wide-Range Global AC Input
   Worldwide auto-ranging AC specification:

• Input Voltage: 85 VAC ~ 264 VAC
• Frequency: 50–60 Hz
• Standard IEC C14 power inlet for global site deployments

1. Front-to-Rear Native Chassis Airflow

   Airflow direction aligns with the original thermal design of ASR902 / ASR903 series chassis.

   Important Note: AC and DC power supply modules may coexist in the same chassis, but mixing different wattage PSU models is not recommended for stable load sharing.
2. Hot-Swap Support

   Supports Online Insertion and Removal. Technicians can replace faulty power modules without shutting down the router, enabling non-disruptive hardware maintenance and minimizing service downtime. No built-in power switch on the module.
3. LED Status Indicators & IOS-XE Telemetry

   Front-panel dual status LEDs monitor input power presence and PSU operational health. The module reports operating voltage, internal temperature and fault conditions to IOS-XE for remote monitoring and alarm notification.
4. Multi-Layer Hardware Protection

   Integrated overvoltage protection (OVP), overcurrent protection (OCP), overtemperature protection (OTP), surge protection and short-circuit protection to safeguard both the power supply and ASR900-series router hardware.
5. Optimized Energy Efficiency

   High power conversion efficiency reduces thermal load, supporting reliable 24/7 continuous rack operation for edge and aggregation routing platforms.

Supported Hardware Platforms

• Cisco ASR 902 Aggregation Services Router
• Cisco ASR 902U Aggregation Services Router
• Cisco ASR 903 Aggregation Services Router
• Cisco ASR 903U Aggregation Services Router

Not compatible with ASR907, ASR920 and other Cisco routing families.

Typical Application Scenarios

• Service provider edge aggregation and MPLS remote POP deployments
• Enterprise WAN edge and multi-service VPN routing
• Carrier access network convergence sites
• Outdoor shelter and remote network node deployments with AC power
• Mission-critical edge routing infrastructure requiring redundant AC power feeds

Technical Specifications

• Form Factor: Horizontal pluggable FRU for ASR902 / ASR903 chassis
• Input Type: Single universal wide-range AC input
• Main Output Rail: +12 VDC (12.0 ~ 12.4 VDC)
• Rated Continuous Output: 550W
• Hot Swappable: Yes
• Redundancy Mode: 1+1 with load sharing
• Airflow Direction: Front-to-Rear
• Compliance: UL60950-1, EN60950-1, FCC Class A, CE certified, RoHS compliant

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