POWER SYSTEMS / RACK PDU
Five tiers of rack PDU, one factory floor.
OEM/ODM rack PDU programs from Basic to Switched with per-outlet metering — ±1% billing-grade accuracy, three-phase capacity past 22 kW, and SNMPv3, Modbus TCP and Redfish on every smart unit.
SPEC SHEET
| Voltage | 120 / 208 / 230 / 400V AC |
|---|---|
| Current | 16 – 63A · 1φ & 3φ WYE |
| Outlets | 8 – 48 · C13 / C19 / HDOT |
| Metering | ±1% billing-grade · inlet & outlet |
| Protocols | SNMPv3 · Modbus TCP · Redfish · IPMI |
| Mounting | 0U vertical / 1U horizontal |
| Safety | UL 62368-1 · CE · UKCA |
FIVE PRODUCT TIERS
Start at Basic. Grow to billed, switched outlets.
Every VoltFab rack PDU is built on one chassis platform, so an operator can standardize mechanics across a hall and climb the monitoring ladder as tenants start demanding billing data. Moving a tier swaps the intelligence board, not the rack — and the tier names below are the same five-level classification the industry has used since inlet metering first appeared.
| Tier | Inlet metering | Outlet metering | Outlet switching |
|---|---|---|---|
| Basic | — | — | — |
| Metered | ±1% | — | — |
| Metered-by-Outlet | ±1% | ±1% | — |
| Switched | ±1% | — | Per-outlet on/off |
| Switched+Outlet | ±1% | ±1% | Per-outlet on/off |
STANDARD RANGE
Specified like a platform, not a catalog SKU.
Each row below is a configurable sheet: outlet maps, cord sets and protocol stacks are set per program during DFM, with phase balance verified before a pilot ships.
| Parameter | Standard range | OEM options |
|---|---|---|
| Input voltage | 120/208V split-phase · 230V 1φ · 400V 3φ | 480V WYE for North America |
| Input current | 16A / 20A / 32A | 48A / 63A feeder inputs |
| Capacity | 3.7–5 kW single-phase · 11–22 kW 3φ | 30 kW+ AI rack builds |
| Outlets | IEC C13 (10A) / C19 (16A) | C21, HDOT high-density |
| Outlet count | 8 – 24 per unit | Up to 48 with HDOT |
| Metering | ±1% billing-grade, inlet level | ±1% per-outlet tier |
| Communications | SNMP v1/v3 · Modbus TCP · IPMI | Redfish, HTTPS web UI |
| Environment sensors | Temperature / humidity / door | Daisy-chained leak detection |
| Mounting | 0U vertical / 1U horizontal | Tool-less bracket sets |
| Cord | 1.2 – 2.5 m fixed | Custom lengths and angles |
| Identification | Color-coded voltage rings | Custom silk-screen branding |
| Safety | UL 62368-1 · IEC 62368-1 | CE / UKCA / SAA marks |
OEM PROGRAM PATH
Four knobs define your build.
Outlet mapping
C13/C19/HDOT counts and grouping mapped to your rack elevation, phase-balanced across branch circuits.
Cord & form factor
1.2–2.5 m cord lengths, 0U vertical or 1U horizontal, with the input connector matched to your drop.
Enclosure & color
Housing finish and voltage color-coding aligned to your installation standard for foolproof installs.
Brand silk
Your logo and part numbers silk-screened; labels and packaging prepared per destination market.
DEPLOYMENT DETAIL
Built for the rack elevation you already run.
A Switched+Outlet tier PDU draws under 50 W for its own controller, so metering never eats the budget it reports. 0U verticals mount in the rear posts with tool-less brackets; a local display plus web interface covers commissioning before SNMP polling starts. For telecom sites the same platform is offered in a −48VDC variant.
FAQ
Rack PDU questions we hear most.
What does billing-grade ±1% metering actually mean?
How should a three-phase PDU be configured?
HDOT or C13/C19 — which outlets should I specify?
What MOQ and lead time should I plan around?
RACK PDU PROGRAM
