In the fast-evolving landscape of data centers and IT infrastructure in 2025, efficient power distribution is key to minimizing downtime and maximizing space. The APC Basic Rack PDU, 1U, 16A, 208 & 230V, (10)C13 & (2)C19 (AP9559) from Schneider Electric delivers straightforward, reliable power to your rack-mounted equipment without the bells and whistles of switched models. Ideal for small to medium setups where basic functionality meets high reliability, this 1U horizontal PDU supports up to 3.68 kW of power, making it a staple for servers, networking gear, and storage arrays. In this blog, we’ll dive into its specs, installation, and why it’s a smart choice for cost-conscious IT pros navigating denser racks and edge deployments.
What is the APC AP9559?
The AP9559 is a no-frills, basic Rack Power Distribution Unit (PDU) designed for horizontal mounting in standard 19-inch racks. It takes a single 16A input via an IEC 60309 (EN6039 style) plug and distributes power across 10 IEC 320 C13 outlets (for lower-draw devices like switches and routers) and 2 IEC 320 C19 outlets (for high-power gear like servers). Operating at 208V or 230V AC, it’s built for global compatibility in single-phase environments, ensuring stable delivery without metering or remote controls—perfect for straightforward setups where you need power close to the load.
At just 1U high with a 2.5m cord, the AP9559 weighs around 2.7 kg and fits seamlessly into APC NetShelter enclosures or any EIA-standard rack. It’s RoHS compliant for eco-friendliness and focuses on durability, with a rugged steel housing to withstand data center rigors.
Key Specifications and Features
The AP9559 prioritizes simplicity and reliability in a compact form. Here’s a breakdown of its core attributes:
| Feature/Specification | Details |
|---|---|
| Form Factor | 1U horizontal, rack-mountable |
| Input | IEC 60309 16A plug, 208/230V AC |
| Output | (10) IEC 320 C13 & (2) IEC 320 C19 outlets |
| Power Rating | 16A, up to 3.68 kW |
| Cord Length | 2.5 m (8.2 ft) |
| Load Capacity | 3680 VA |
| Mounting | Toolless for NetShelter VX (AR2100 series); screw-mount for standard racks |
| Weight/Dimensions | 2.7 kg; 44.4 x 4.4 x 1.7 inches (HxWxD) |
| Certifications | RoHS, CE; indoor use only |
| Warranty | 1 year |
Notable features include versatile input/output connections for adapting to varying power needs and a design that supports up to 14.4 kW in multi-branch configurations (though single-branch here). It’s surge-protected implicitly through robust construction but lacks advanced metering—keeping it affordable and easy to deploy.
Compatibility: Fitting into Your Rack Ecosystem
The AP9559 integrates effortlessly with APC’s ecosystem, particularly NetShelter enclosures like the VX series (AR2100) for toolless mounting. It’s compatible with standard 19-inch racks from any vendor, using included brackets and screws for secure installation. Pair it with APC Smart-UPS units (e.g., SUA2200RMXLI3U or SURT3000XLI) for full power backup, as it handles the distribution side seamlessly. The C13 outlets suit low-to-medium loads (up to 10A each), while C19s manage high-draw devices like blade servers.
For broader APC power management, it works with Network Management Cards (NMCs) on compatible UPS models, though the PDU itself is unmanaged. Always verify your rack’s depth (minimum 4.4 inches clearance) and ensure a grounded 16A circuit—it’s not for three-phase or low-voltage (120V) setups.
Why Choose the AP9559? Pros and User Insights
In a market flooded with smart PDUs, the AP9559’s basic design appeals to users seeking reliability without complexity, often praised for its “set-it-and-forget-it” vibe.
Pros include:
- Space-Saving Efficiency: 1U footprint distributes power to 12 outlets, ideal for dense racks— one B&H reviewer called it “perfect for providing power closer to rack-mountable equipment.”
- Versatile Outlets: Mix of C13 and C19 covers diverse gear, reducing cable clutter.
- Quick Deployment: Toolless mounting in NetShelter saves time; horizontal orientation aids airflow.
Downsides? Lacks monitoring, so it’s not for environments needing real-time data—users upgrading from basic strips appreciate the upgrade but wish for optional metering. An Amazon commenter highlighted: “Great for simple server racks; reliable distribution without overkill.” Overall, it’s lauded for value in small data centers or homelabs scaling up.
Installation Guide: Step-by-Step Simplicity
APC makes deploying the AP9559 intuitive, with a user manual covering safety and options. De-energize your circuit first and wear protective gear—high voltage is involved. Based on official guides, here’s the essentials:
- Unpack and Inspect: Check for damage and report issues to APC. Recycle packaging responsibly.
- Choose Mounting: For NetShelter VX (AR2100), use toolless snap-in brackets. For standard racks, attach brackets to the PDU with included hardware.
- Secure to Rack: Align with rack ears and fasten using four screws per side (M6 or 10-32). Ensure horizontal orientation for outlet access.
- Connect Power: Plug the IEC 60309 into a grounded 16A, 208/230V source. Attach device cords to C13/C19 outlets (max 10A per C13).
- Verify and Power On: Ground properly (green wire to chassis), then energize. Test connections—no LEDs, but check for stable output.
The process takes 10–15 minutes. For vertical use (if adapted), consult the manual. Download the full guide from APC’s site for diagrams.
Maintenance Tips for Long-Term Reliability
As a basic PDU, the AP9559 requires minimal upkeep, but these habits ensure 5+ years of service:
- Visual Checks: Monthly, inspect cords and outlets for wear or overheating.
- Clean Regularly: Quarterly, use compressed air on vents to prevent dust buildup affecting airflow.
- Load Monitoring: Manually track total draw (under 16A) to avoid trips—use external meters if needed.
- Environmental Control: Operate indoors at 0–40°C; avoid moisture or direct sunlight.
- Annual Review: Tighten connections and test continuity; leverage APC’s 1-year warranty for issues.
Pair with rack airflow management for optimal performance in hot setups.
Conclusion: Power Distribution Done Right
The APC AP9559 Basic Rack PDU is a testament to “simple does it better”—delivering 3.68 kW of reliable, distributed power in a 1U package that’s easy to install and budget-friendly. In 2025’s push for efficient edge and hybrid data centers, it’s an essential for IT teams prioritizing uptime over extras.
Snag one from us @ TIACO TECHNOLOGIES. Powered up your setup with the AP9559? Share your tips in the comments. Stay connected, stay efficient.