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What Is the A900-PWR900-D2= Designed For?
The A900-PWR900-D2= is a 900W DC power supply module built for Cisco ASR 9000 Series routers. Unlike AC-based PSUs, it caters to environments requiring direct current (DC) power infrastructure, such as telecom central offices or industrial networks. Its dual-feed DC input ensures redundancy, critical for mission-critical operations.
Key Technical Features
- Power Output: 900W DC with dual 48V/60V DC inputs for uninterrupted operation.
- Efficiency: Operates at 88% efficiency under typical loads, reducing energy waste in DC setups.
- Compatibility: Supports ASR 9904, 9910, and 9922 chassis (not compatible with smaller 9901 models).
- Hot-Swappable: Enables maintenance without downtime.
Addressing Common User Questions
Q: Can this module replace an AC power supply in existing ASR 9000 deployments?
No—the A900-PWR900-D2= is DC-exclusive. Mixing AC and DC PSUs in the same chassis is unsupported.
Q: How does its 900W capacity compare to higher-wattage DC alternatives?
While Cisco offers 1200W DC modules, the A900-PWR900-D2= strikes a balance for mid-tier power needs, avoiding overprovisioning costs.
Performance Comparison: A900-PWR900-D2= vs. A900-PWR1200-A= (AC)
| Feature | A900-PWR900-D2= | A900-PWR1200-A= |
|---|---|---|
| Power Type | DC Dual-Feed | AC |
| Max Output | 900W | 1200W |
| Ideal Use Case | Telecom DC grids, industrial | Data center AC environments |
| Redundancy | Dual DC inputs | Dual AC feeds |
| Efficiency | 88% | 90%+ |
Ideal Deployment Scenarios
- Telecom Core Networks: Aligning with DC power standards in central offices.
- Industrial IoT Hubs: Rugged environments where DC reliability is prioritized.
- Hybrid Data Centers: Supporting ASR 9000 routers in DC-powered zones.
For certified hardware, the A900-PWR900-D2= is available through itmall.sale.
Why This DC PSU Deserves Attention
Having worked with ASR 9000 deployments in mixed power environments, the A900-PWR900-D2= fills a gap often overlooked: cost-effective DC power for medium-scale demands. While high-wattage DC units dominate headlines, this module’s efficiency in 48V/60V ecosystems makes it indispensable for operators transitioning from legacy DC grids. Its dual-input design also simplifies redundancy planning compared to single-feed DC alternatives—a subtle but critical advantage in outage-prone sectors.