Server Technology C1S36TA-DFME2899/C PRO1 Smart Primary 3-Phase Rack PDU

Overview

The Server Technology C1S36TA-DFME2899/C is a PRO1 Smart Primary power distribution unit built for high-density rack rows that need real 3-phase capacity without guessing at phase balance. It's configured for 208V 3PH Delta input at a 50A rating, feeding a combined 36 outlets split across 18x C13 and 18x locking CX receptacles. This is a HDOT (High Density Outlet Technology) primary unit on the alternate phase rotation, which matters when you're pairing it with a companion PDU in the same rack and need the phase sequencing to line up correctly across both units. If you're speccing power for server rooms, colocation cages, or network operations centers running mixed C13 and locking-cord loads, the C1S36TA-DFME2899/C is built to sit in that exact slot.

Key Features

• 208V 3PH Delta Input: Delta topology on 3-phase 208V service pulls balanced load across all three legs, which is the difference between a rack row that trips a breaker under peak load and one that doesn't — critical when a single rack is feeding dozens of dual-corded servers.
• 50A Current Rating: A 50A branch circuit gives real headroom for dense 1U/2U server deployments and blade chassis pulling continuous current, so you're not derating your rack to stay under the PDU's ceiling.
• 36 Total Outlets (18x C13 + 18x CX): The C13 bank covers standard IEC power cords on servers, switches, and storage arrays, while the 18 CX locking outlets keep high-value equipment from walking out of its receptacle during maintenance or a jostled cable run — no more zip-tying cords to keep a server from losing power.
• HDOT (High Density Outlet Technology): Packing 36 outlets into a single rack unit footprint means you're not burning extra U-space on power distribution that you could otherwise use for compute, storage, or network gear.
• Smart Primary Unit, Alt Phase Configuration: As the primary unit in an alternate-phase pairing, it's designed to sit alongside a matching secondary PDU so combined load balances correctly across all three phases of the 3PH Delta feed — get this wrong and you end up with one phase carrying most of the load while the others sit idle.
• TAA Compliance: TAA compliance is a hard requirement on federal, GSA schedule, and many prime-contractor data center builds — without it, the PDU is disqualified from the procurement before price or capacity even get discussed.

Integration & Compatibility

The C1S36TA-DFME2899/C (often searched as C1S36TA DFME2899/C) is a Smart Primary unit, meaning it's designed to be deployed as part of a phase-matched pair rather than as a standalone strip in a 3PH Delta environment where load balancing across legs is a design requirement. When you're building out rack-mounted infrastructure alongside your Server Technology power distribution line, matching outlet type to cord type up front — C13 for standard IEC loads, CX for locking connections on critical gear — avoids a second procurement cycle chasing the wrong outlet count. If you're planning power budgets across a full rack row, it's worth reviewing a power distribution and capacity planning guide before finalizing PDU count and outlet mix, since 3-phase Delta topology behaves differently than single-phase or 3PH Wye when you're calculating per-leg draw. Pair this unit with appropriately rated rack power accessories and locking power cords sized for the CX outlets to avoid a mismatch between the PDU's receptacle type and what's already terminated on your servers.

What's in the Box

Package contents beyond the C1S36TA-DFME2899/C PDU unit itself were not specified in available manufacturer documentation.

Frequently Asked Questions

Q: Is the C1S36TA-DFME2899/C TAA compliant?

A: Yes, the C1S36TA-DFME2899/C carries TAA Compliance, which is typically required for federal and GSA schedule data center procurements.

Q: What's the input voltage and phase configuration on the C1S36TA-DFME2899/C?

A: It runs on 208V 3-phase Delta input at a 50A current rating.

Q: How many outlets does the C1S36TA-DFME2899/C have, and what type?

A: It provides 36 total outlets configured as 18x C13 and 18x CX locking receptacles.

Q: Is the C1S36TA-DFME2899/C a standalone PDU or does it need a companion unit?

A: It's a Smart Primary unit in an alternate-phase (Alt Phase) configuration, designed for deployment as the primary unit in a phase-matched pair for balanced 3-phase load distribution.

Q: What does HDOT mean on this PDU?

A: HDOT stands for High Density Outlet Technology, Server Technology's design for fitting a high outlet count (36 in this case) into a compact rack-mount footprint.

James Everett

The C1S36TA-DFME2899/C is one of those PDUs that only makes sense once you understand it's a primary half of a pair. Anyone spec'ing 3-phase Delta at 208V/50A across 36 outlets needs to know this is the Alt Phase primary unit, not a drop-in standalone.

Technical Highlights:

• 36-outlet HDOT layout (18x C13 + 18x CX): Splitting the outlet bank between standard IEC and locking CX receptacles lets you mix commodity server cords with locking cords on gear you don't want jarred loose during a live swap, all in one rack unit footprint.
• 208V 3PH Delta at 50A: Delta wiring on a 3-phase 208V feed at 50A gives enough headroom for a fully populated rack of dual-corded 1U servers without tripping the branch circuit under peak draw.
• TAA Compliance: For anyone bidding a federal or GSA-schedule data center build, TAA status on the C1S36TA-DFME2899/C is a pass/fail gate before the spec sheet even gets read.

Deployment Considerations:

• Because this is a Smart Primary unit on Alt Phase, order it alongside its matched secondary unit — installing it alone in a 3-phase Delta rack without the paired unit defeats the phase-balancing design intent.
• Confirm your server and storage cordsets match the C13/CX split before racking — 18 of the 36 outlets are locking CX, which won't accept a standard IEC C14 plug without the correct cord.

This is the right call for a colocation or federal data center rack row standardizing on 3-phase Delta power with a mix of standard and locking cordsets, where the C1S36TA-DFME2899/C's primary/secondary pairing gets used as designed rather than run solo.