Cisco A900-PWR1200-D Full English Description

Product Overview

Key Features

1. 1200 Watt Rated Input Capacity, 975W Usable Output

   Delivers up to 975W continuous usable +12VDC power inside ASR902/903 chassis with appropriate fan modules. Supports 1+1 redundant deployment with automatic dynamic load sharing to eliminate single-point power failure risks for high-load routing configurations.
2. Telecom Negative DC Wide Input Range

   Optimized for standard carrier-grade negative DC power infrastructure:

• Input Voltage: -40.8 VDC ~ -72 VDC (nominal -48 VDC / -60 VDC)
• T-shaped locking DC terminal connector for secure hardwired power cabling
• Recommended wire gauge: 8–10 AWG

1. Front-to-Rear Native Chassis Airflow

   Airflow matches the original thermal design of ASR902 / ASR903 series chassis.

   Important Note: Do not mix 550W and 1200W power supplies within the same chassis. AC and DC PSU mixing is not recommended for stable load sharing. This model uses T-type DC connector and cannot be intermixed with A900-PWR550-D (Euro terminal block) variants.
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.
3. LED Status Indicators & IOS-XE Telemetry

   Front-panel dual status LEDs display DC input presence and operational health. The module continuously reports operating voltage, internal temperature, fan status and fault conditions to IOS-XE for remote monitoring and alarm notifications.
4. Multi-Layer Hardware Protection

   Integrated reverse polarity protection, overvoltage protection (OVP), overcurrent protection (OCP), overtemperature protection (OTP), surge protection and short-circuit protection to safeguard the power supply and ASR900-series router hardware.
5. High-Efficiency Power Conversion

   Optimized conversion efficiency reduces thermal dissipation, supporting reliable 24/7 continuous rack operation for high-capacity carrier 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 unrelated Cisco routing platforms.

Typical Application Scenarios

• Service provider edge aggregation and MPLS remote POP deployments with high-power RSP modules
• Telecom central offices and network shelters equipped with -48VDC / -60VDC power infrastructure
• Converged mobile backhaul and carrier access network sites
• High-density enterprise WAN edge and multi-service VPN routing
• Mission-critical routing infrastructure requiring high-capacity redundant DC power feeds

Technical Specifications

• Form Factor: Horizontal pluggable FRU for ASR902 / ASR903 chassis
• Input Type: Telecom negative -48/-60VDC DC input, T-type locking connector
• Main Output Rail: +12 VDC
• Rated Input Power: 1200W; Usable Continuous Output: 975W
• Hot Swappable: Yes
• Redundancy Mode: 1+1 with automatic load sharing
• Airflow Direction: Front-to-Rear
• Compliance: NEBS, UL60950-1, EN60950-1, FCC Class A, CE certified, RoHS compliant

Short Version for E-commerce Listing

Supplementary Remark: Matching AC counterpart:A900-PWR1200-A. Lower capacity DC alternatives:A900-PWR550-D,A900-PWR550-D-E.