Server Technology SEV-FB636B-L2230 Switched PDU Expansion Module

Overview

The SEV-FB636B-L2230 is a switched power expansion unit built to add outlet capacity to a Server Technology PRO2 rack PDU deployment. It's configured with 24xC13 and 12xC19 outlets on a 415V 3-phase Wye feed at a 30A current rating, using an alternating-phase HDOT (High Density Outlet Technology) outlet layout. This is a specification-built unit — the part number reflects a custom outlet count and phase configuration rather than a generic catalog SKU, which matters when you're matching it against an existing power products deployment or a multi-rack standardization plan.

Key Features

• 36 total outlets (24xC13 + 12xC19): a high-density mix that covers both standard C14-corded servers and higher-draw C20-corded equipment like blade chassis and switches on one strip, so you're not running two separate PDUs to cover mixed cord types in the same rack.
• 415V 3-phase Wye input: matches the standard 3-phase distribution voltage used in most North American and international data center switchgear, letting this unit tie directly into existing 3-phase branch circuits without a step-down transformer.
• 30A current rating: sets the safe continuous load ceiling per circuit — plan your per-outlet and per-branch load budget against this figure before populating all 36 outlets, especially with mixed C13/C19 gear that draws unevenly.
• Alternating-phase HDOT outlet configuration: outlets are sequenced across phases in the physical layout, which balances load across all three phases as you plug in equipment left-to-right rather than requiring manual phase-balancing math at commissioning.
• Switched outlet control: individual outlet switching supports remote power-cycling of hung equipment and staged power-up sequencing — useful when you can't get physical hands on a remote rack during a boot storm.

Integration & Compatibility

As a PRO2-family expansion unit, the SEV-FB636B-L2230 is intended to pair with a compatible Server Technology PRO2 rack PDU as an outlet-count add-on rather than as a standalone primary PDU — confirm base-unit compatibility and available expansion ports before ordering. Because this is a 415V 3-phase circuit, verify your facility's branch circuit voltage and available amperage with your electrical contractor prior to install; this is not a plug-and-play 120V/208V unit. For data center or rack and cabinet deployments standardizing on high-density outlet counts, review your power and infrastructure planning resources to confirm the branch circuit and expansion architecture fits before committing to a 3-phase Wye topology across multiple racks.

Frequently Asked Questions

Q: What voltage and phase does the SEV-FB636B-L2230 run on?

A: It's built for 415V 3-phase Wye input at a 30A current rating.

Q: How many outlets does the SEV-FB636B-L2230 have?

A: 36 total — 24xC13 and 12xC19 outlets, arranged in an alternating-phase HDOT layout.

Q: Is the SEV-FB636B-L2230 a standalone PDU?

A: It's a switched expansion unit designed to extend outlet capacity on a compatible Server Technology PRO2 rack PDU rather than operate as a standalone primary unit.

Q: What does 'alt phase HDOT' mean on this unit?

A: Outlets are sequenced across the three phases in the physical outlet layout, so plugging equipment in sequence naturally balances load across phases instead of requiring manual phase assignment.

Jerry Tildsen

The SEV-FB636B-L2230 is a spec I get asked about when a rack is outgrowing its primary PDU's outlet count. 36 combined outlets across C13 and C19 on a single expansion unit is a lot of density, and the 415V 3-phase Wye feed tells me this is going into a facility already running 3-phase distribution to the row — not a retrofit into a 120V single-phase rack.

Technical Highlights:

• 24xC13 + 12xC19 outlet mix: covers standard 1U/2U server cords (C13) and higher-draw equipment like blade enclosures or aggregation switches (C19) on one unit, so mixed-load racks don't need a second PDU strip.
• 30A rating at 415V 3PH: gives you real headroom for a fully populated 36-outlet unit, but you still need to work the load math per phase leg before you plug in the last few devices.
• Alt-phase HDOT layout: the outlet sequence alternates phase assignment by physical position, which does a lot of the phase-balancing work for you during rack population instead of leaving it to a spreadsheet after the fact.

Deployment Considerations:

• Confirm this expansion unit is compatible with your specific PRO2 base unit's expansion port before ordering — expansion units in this family are matched to a base chassis, not universal.
• This is a 415V 3-phase circuit, not a standard 120V/208V single-phase feed — get your electrical contractor to confirm branch circuit voltage and available amperage before this shows up on install day.

I'd spec the SEV-FB636B-L2230 for a data center row already standardized on 3-phase Wye distribution that needs to add high-density mixed C13/C19 outlet capacity to an existing PRO2 PDU footprint without introducing a second standalone unit.