APC AP9551 Basic Rack Power Distribution Unit 120V 20A
Overview
The APC AP9551 is a Basic Rack Power Distribution Unit (PDU) engineered to distribute AC power from a single input feed to multiple connected devices within a rack enclosure. It is specified for IT infrastructure power distribution and is deployed by data center technicians, network engineers, and facilities teams to provide consistent AC feeding for servers, networking switches, storage arrays, and security appliances. This unit does not provide backup power or surge suppression×its function is to distribute utility power reliably to connected rack loads.
This model supports a 20 A input current at nominal 120 V AC, delivering up to approximately 2400 VA total load capacity. Distribution is provided through fourteen NEMA 5-15R output receptacles fed from a single NEMA L5-20P plug and an integral ~12 ft (3.7 m) power cord. The design assures sufficient outlet count for high-density 19-inch rack configurations.
Installation is intended in 0 U vertical mounting orientation, which saves usable rack space by securing the PDU along the rear vertical channel of standard server racks or enclosures. The zero-U footprint ensures distribution capability without occupying horizontal rack units needed for active equipment.
Deployment is typical in environments where straightforward AC power distribution is required without the need for advanced switching, metering, or networked control. The unit includes overload protection compliant with UL/CSA safety standards and supports input voltages ranging from 100 V to 120 V, accommodating common North American power deployments.
The AP9551 is not designed for active power conditioning, backup power support, centralized metered monitoring, or network manageability. It is also not intended for high-voltage (208 V / 230 V) or three-phase power architectures without appropriate upstream equipment.
Key Features
• 0U vertical rackmount basic PDU for efficient power distribution
• Fourteen NEMA 5-15R outlets for multiple rack devices
• NEMA L5-20P 20 A input with ~12 ft power cord
• Up to ~2400 VA load capacity at 120 V AC
• Overload protection with safety compliance (UL, CSA, cUL)
Technical Specifications
| Specification | Details |
|---|
| Brand | APC |
| Part Number | AP9551 |
| Product Type | Basic Rack Power Distribution Unit |
| PDU Type | Basic (Non-metered, Non-switched) |
| Nominal Input Voltage | 100-120 V AC |
| Input Frequency | 50/60 Hz |
| Maximum Input Current | 20 A |
| Acceptable Input Voltage | 90-132 V AC |
| Input Connector | NEMA L5-20P |
| Output Voltage | 120 V AC |
| Output Receptacles | 14 × NEMA 5-15R |
| Load Capacity | ~2400 VA |
| Overload Protection | Yes |
| Form Factor | 0U Vertical Rackmount |
| Cord Length | 12 ft (3.7 m) |
| Dimensions (H × W × D) | 24.4 × 1.75 × 1.75 in |
| Weight | ~4.85 lb |
| Operating Temp. | 32-113 °F (0-45 °C) |
| Operating Humidity | 0-95 % non-condensing |
| Safety Approvals | UL 1363, cUL, CSA |
