APC 9000 Switched, ZeroU, 20A, 208V, (21) C13/C15 & (3) C19/C21, L620 Cord Rack Power Distribution Unit

The APC APDU9959NA3 is a switched rack power distribution unit that brings precise, remotely managed power to a full rack of servers and networking gear while consuming no rack units of horizontal space. Built for 208-volt environments, it mounts vertically on the rear or side of an APC NetShelter enclosure without tools, so installers can add or replace power in minutes and leave every rack U free for equipment.

The unit feeds critical loads through twenty-one outlets that accept C13 or C15 plugs and three larger outlets ready for C19 or C21 plugs. Together they support up to 3300 VA with a 16 A line-rated current, making the PDU a solid match for dense blade servers, hyper-converged appliances, or high-draw switches. A factory-installed L6-20 plug ties the PDU to a 20 A branch circuit, providing the headroom often required in modern data halls and edge closets.

Because every outlet is switched, administrators can power-cycle a single device, stagger start-up sequences after maintenance, or lock outlets to prevent accidental overloads. Management is available over the built-in network interface and can be extended to Wi-Fi by adding the APC AP9834 USB device—handy when cabling is limited or the rack sits in a remote location.

In day-to-day operation, this PDU helps facilities teams balance loads, reduce onsite visits, and respond faster to alarms that threaten uptime. It is a practical fit for enterprise data centers, co-location cages, lab environments, or any edge site where reliable power and granular control are essential but physical space is tight.

• ZeroU vertical design preserves every rack unit for IT hardware
• Twenty-one C13/C15 and three C19/C21 outlets distribute 208 V power to diverse equipment
• 3300 VA capacity with 16 A line rating supports dense server and network loads
• Switched outlets enable individual power control and sequencing
• Remote management through the onboard network port, with optional Wi-Fi via APC AP9834
• L6-20 input plug connects to standard 20 A 208 V circuits
• Toolless mounting aligns with APC NetShelter enclosures for fast installation