HPE P59418-B21 High-Density Hybrid PDU

The HPE P59418-B21 is a high-density, worldwide-rated power distribution unit engineered for data center and equipment-room environments where flexible outlet density and mounting versatility matter. Rated at 22KVA and designed for deployment in high-density rack configurations, the P59418-B21 (often searched as P59418 B21) supports both single-phase and three-phase input — giving procurement teams and rack architects a single SKU that adapts to the power topology already in place rather than forcing a redesign.

Key Features

• C13/C19 Hybrid Combo Outlets: Mixed C13 and C19 receptacles on a single PDU means you can feed both standard 1U servers (C13) and high-draw compute or storage nodes (C19) from one unit — no secondary PDU required and no wasted outlet capacity when your rack load mix shifts over time.
• Single-Phase and Three-Phase Input Support: Whether your facility runs single-phase branch circuits or three-phase distribution, the P59418-B21 accommodates both. This is the spec that matters for multi-site deployments where power infrastructure varies by building or floor — one part number covers both scenarios.
• 0U Vertical and 1U Horizontal Mounting: Vertical 0U deployment keeps every rack unit free for revenue-generating equipment; the 1U horizontal option is there when your rack layout or cage rules require it. Both modes are supported without additional adapter hardware, which simplifies pre-staging and reduces per-rack BOM complexity.
• High-Density Design (HHD): The HHD designation targets racks running above-average per-unit power draw — typical in GPU compute, dense storage, or hyperconverged configurations where outlet count and ampacity per outlet are the binding constraints, not PDU form factor.
• Worldwide (WW) Rating: The WW designation confirms this unit is not region-locked. For organizations managing international deployments or maintaining a standardized global rack spec, this eliminates the separate SKU overhead of region-specific PDU procurement.

Integration and Compatibility

The P59418-B21 is built to integrate into HPE rack ecosystems including the HPE 42U and 48U Enterprise series racks, but the C13/C19 outlet standard and universal IEC input make it compatible with third-party rack enclosures as well. Coordinate with your facilities team on branch circuit breaker sizing before deployment — a 22KVA unit at full draw requires appropriately rated upstream protection that not all existing panels provide without a circuit upgrade.

Frequently Asked Questions

Q: Does the P59418-B21 support both single-phase and three-phase power input?

A: Yes. The P59418-B21 supports both single-phase and three-phase input configurations, making it adaptable to different facility power topologies without requiring a different PDU SKU.

Q: What outlet types are available on the P59418-B21?

A: The P59418-B21 features a C13/C19 Hybrid Combo outlet configuration, providing both C13 and C19 receptacles on a single unit to serve mixed-load racks. The unit also includes 5-20R outlets.

Q: Can the P59418-B21 be mounted vertically in a rack?

A: Yes. The P59418-B21 supports 0U vertical mounting, which preserves all rack units for other equipment. A 1U horizontal mounting option is also supported for environments where vertical mounting is not practical.

Q: Is the P59418-B21 a worldwide-rated unit?

A: The WW designation in the product name indicates a worldwide rating, meaning the unit is not restricted to a single regional market — relevant for global deployments or organizations standardizing on a single rack PDU SKU across locations.

Eden Phillips

The P59418-B21's C13/C19 hybrid outlet layout is the detail I'd flag first when speccing this unit into a dense compute rack. Mixed-load racks — GPU nodes pulling 20A+ alongside standard 1U servers — typically end up with two separate PDUs just to cover outlet type differences. This unit collapses that into one, which directly affects per-rack cabling complexity and the time it takes to commission a new rack build.

Technical Highlights:

• 0U Vertical Mounting: Keeps the full rack height available for equipment — critical in high-density deployments where even 1U overhead has real cost implications at scale.
• Single/Three-Phase Flexibility: A single PDU SKU that handles both input types reduces the procurement surface area for organizations running facilities with mixed power infrastructure.
• C13/C19/5-20R Outlet Mix: Covers the full range of IEC and NEMA load types common in enterprise data centers — reduces the need for outlet adapters that introduce failure points and complicate cable management.

Deployment Considerations:

• Confirm upstream branch circuit breaker rating before installation — a 22KVA unit at or near full load requires appropriately rated protection; many existing panels in older data rooms will need an upgrade before this PDU can be safely loaded.
• The 0U vertical option requires available vertical mounting channels in the rack; verify your rack enclosure supports HPE's 0U PDU bracket system before ordering if you're deploying into non-HPE rack hardware.

This unit is the right fit for high-density compute or storage rack builds where outlet diversity and mounting flexibility need to be solved at the PDU level rather than worked around with adapters and secondary power strips.