APC by Schneider Electric Rack PDU Metered Zerou 14.4KW 208V (24)C13 (4)C19 (2)L6-30R;10 - AP7899B

APC by Schneider Electric AP7899B Metered Zero-U Three-Phase Rack PDU

Overview

The AP7899B is a zero-U, vertically mounted, three-phase metered rack PDU designed for high-density data center and server room deployments where 208V three-phase power delivery and real-time load monitoring are non-negotiable. Rated at 14.4kW (14,400 VA) with a 50A CS8365 input plug and a 10-foot (3.05m) power cord, the AP7899B fits into the rear vertical channel of a standard equipment rack without consuming a single rack unit — freeing every U for revenue-generating infrastructure.

This unit belongs to APC's APC by Schneider Electric rack power distribution line, purpose-built for environments that demand granular load visibility without the added cost of switched or outlet-level control. If you're managing colocation cages, dense compute rows, or high-draw storage arrays, this is the class of PDU to evaluate first.

Key Features

• 14.4kW Three-Phase Capacity at 208V: Running three-phase 208V means you're distributing load across all three legs, which flattens the per-phase draw to a maximum of 40A each. That balanced loading is exactly what facilities teams and UPS systems want to see — and it's what lets this unit support up to 50A total input without triggering breaker trips or thermal alarms on your panel.
• 30 AC Outlets Across Three Connector Types: The outlet mix — 24×C13, 4×C19, and 2×NEMA L6-30R — covers the full range of server room hardware in a single unit. C13 handles standard 1U/2U servers and networking gear; C19 handles high-draw devices like GPU servers, blade chassis, and high-current storage arrays; L6-30R provides a locking 208V connection for rack-level power distribution or dedicated high-draw appliances. You won't be hunting for adapters.
• Zero-U Vertical Mounting: Vertical PDUs mount in the rear of the rack frame rather than occupying horizontal rack space. In a 42U cabinet at near-full density, recovering those 1–2U that a horizontal PDU would consume translates directly to additional billable slots — meaningful in colocation or any environment where rack space has a dollar value.
• Metered Monitoring: Metered PDUs display inlet-level current draw, giving you real-time visibility into per-PDU load without requiring a software agent or network connection for basic readings. That's the minimum viable monitoring for any rack PDU in a managed data center — you can verify you're not approaching the 40A-per-phase limit before it becomes a capacity incident.
• CS8365 Input Plug with 3.05m Cord: The CS8365 is a standard locking 50A/208V three-phase connector matched to the panel receptacles common in purpose-built data center raised-floor environments. The 10-foot cord gives you enough reach from rear-of-rack to the floor-level whip or overhead busway without requiring an extension — verify your specific cabinet depth and power drop location before ordering.
• 50/60 Hz Compatible: The AP7899B accepts 50Hz or 60Hz input, which matters if you're deploying in a facility with non-standard utility power or managing infrastructure across international sites under a unified purchasing agreement.
• RoHS and REACH Compliant: Both certifications confirm restricted substances compliance — relevant for any deployment subject to EU environmental directives or for organizations with sustainability procurement requirements. Not a performance differentiator, but a procurement checkpoint worth noting.
• Overload Protection: Built-in overload protection prevents the unit from delivering more current than rated, reducing the risk of thermal damage to connected equipment and protecting upstream breakers from nuisance trips during load spikes.

Integration and Compatibility

The AP7899B is compatible with standard two-post and four-post open-frame racks as well as enclosed cabinets that include rear vertical mounting channels. Verify that your rack's rear channel supports a zero-U vertical PDU mount and that the mounting brackets (if required for your specific cabinet model) are on hand before installation.

As a metered PDU, the AP7899B provides local load readings but does not offer network connectivity, outlet switching, or remote monitoring without an add-on network management card — if those capabilities are required, evaluate a switched or networked PDU variant in the same family. For environments already running a network management layer, the metered form is typically sufficient as a supplement to existing DCIM or BMS infrastructure.

The outlet mix supports virtually all IEC-standard server and networking hardware. High-density compute deployments drawing 20A or more per device should plan their C19 allocation carefully — four C19 outlets at the rated draw limits of connected equipment can approach the per-phase current ceiling quickly. Pair with a compatible UPS sized for the full 14.4kW load for protected runtime.

Frequently Asked Questions

Q: What input plug does the AP7899B use, and what panel receptacle does it require?

A: The AP7899B uses a CS8365 locking plug rated for 50A at 208V three-phase. Your panel or power whip must have a matching CS8365R or equivalent locking receptacle. Confirm with your facilities team before ordering.

Q: How many outlets does the AP7899B have, and what types?

A: The AP7899B has 30 total AC outlets: 24×C13, 4×C19, and 2×NEMA L6-30R. C13 serves standard servers and networking gear; C19 serves high-draw equipment; L6-30R provides locking 208V connections for high-current appliances or sub-distribution.

Q: What is the maximum load capacity of the AP7899B?

A: The AP7899B is rated at 14,400 VA (14.4kW) at 208V. Maximum total input current is 50A, with a maximum of 40A per phase on the three-phase circuit. Plan your connected load to stay within the 40A-per-phase limit to avoid overload events.

Q: Does the AP7899B provide remote monitoring or outlet switching?

A: No. The AP7899B is a metered PDU — it provides local current monitoring at the inlet level but does not include network connectivity, remote monitoring, or outlet-level switching. If those capabilities are required, a switched or network-enabled PDU variant should be evaluated instead.

Q: What rack mounting style does the AP7899B use?

A: The AP7899B is a zero-U (0U) PDU designed for vertical mounting in the rear channel of a standard equipment rack. It does not occupy horizontal rack units, preserving full rack density for active equipment.

Q: Is the AP7899B RoHS compliant?

A: Yes. The AP7899B carries both RoHS and REACH compliance certifications, confirming restricted substances compliance for EU and international procurement requirements.

Karl Wilson

The AP7899B is one of those PDUs that earns its place in a high-density row by doing exactly what it says: distributing 14.4kW of three-phase 208V power across 30 outlets in a zero-U footprint, with enough outlet variety to handle a mixed server population without adapter sprawl. The 40A-per-phase maximum is the number to keep in front of you during capacity planning — it's the real ceiling, not the 50A total input figure.

Technical Highlights:

• Three-Phase Load Balancing at 208V: Splitting load across three phases at up to 40A each means the AP7899B can deliver 14.4kW without creating the single-phase imbalance that trips facility alarms and degrades UPS efficiency. That's a meaningful operational advantage over single-phase high-draw PDUs in dense compute environments.
• 24×C13 + 4×C19 + 2×L6-30R Outlet Mix: Four C19 outlets is the practical minimum for a mixed-density row — enough for blade chassis or dual-corded high-draw servers without burning all your flexibility on one device type. The two L6-30R outlets add locking 208V connectivity for appliances or secondary distribution that don't use IEC connectors.
• 3.05m (10ft) CS8365 Cord: The cord length is long enough for most raised-floor whip placements, but measure your specific cabinet-to-power-drop distance before deploying. In overhead busway configurations or unusually deep cabinets, you may need a longer whip — this cord length is not field-extendable without a rated connector assembly.

Deployment Considerations:

• Verify your rack's rear vertical channel supports a 0U PDU mount and that any required bracket kit for your specific cabinet model is sourced before the deployment date — some cabinet families require model-specific mounting accessories that are not included.
• The AP7899B is a metered unit only: it shows inlet current locally via LED indicators but has no RJ-45 or network port. If your DCIM or BMS platform requires per-PDU polling, you'll need to upgrade to a networked variant or accept manual reads at the unit.

This PDU is the right fit for a colocation or enterprise data center row where cabinet density is at a premium, three-phase 208V power is available at the rack, and the monitoring requirement is satisfied by local metering plus an existing DCIM overlay — not for edge deployments or remote sites where you need remote outlet control or network-based alerting at the PDU level.