APC by Schneider Electric PD40F6FK1-M InfraStruxure Power Distribution Unit
Overview
The APC by Schneider Electric PD40F6FK1-M is a high-capacity, floor-standing power distribution unit built for dense data center and critical infrastructure environments running 208V three-phase AC power. Standing 2057mm tall (roughly 81 inches), this is rack-row or in-row PDU territory — the kind of deployment where you're distributing power to dozens of high-draw servers, network equipment, or surveillance infrastructure from a single, managed source. It handles up to 155A maximum input current per phase at 208V, 60 Hz, making it appropriate for high-density compute rows or large-scale network video recorder and storage deployments where panel-level power needs organized, safe distribution downstream.
The PD40F6FK1-M (often searched as PD40F6FK1 M) is finished in black and carries UL 60950 and cUL certifications, confirming it has been evaluated to recognized North American safety standards. This matters for data center compliance sign-offs and insurance requirements — uncertified PDUs are a common audit flag.
Key Features
- 208V / 60 Hz Input, 155A Maximum Per Phase: At 155A max input and 139A maximum continuous draw per phase, this unit handles serious panel-level loads — appropriate for dedicated power circuits feeding dense server rows, large UPS bypass feeds, or multi-rack surveillance storage clusters. That headroom between max input and continuous draw is intentional: it keeps the unit running safely within thermal limits during sustained operation.
- NEMA L21-20 Output: The L21-20 receptacle is a three-phase twist-lock rated for 20A at 120/208V — common in data center infrastructure and IT equipment rooms. If your downstream equipment uses L21-20 plugs, this PDU connects directly without adapters, eliminating an avoidable failure point.
- NEMA L6-30R Output: The L6-30R is a single-phase 30A, 250V twist-lock output — useful for connecting heavy single-phase loads like large UPS units, high-draw servers, or specialized equipment that runs at 240V rather than 208V three-phase. Having both L21-20 and L6-30R in a single unit gives you flexibility without adding another distribution layer.
- UL 60950 and cUL Listed: These certifications cover information technology equipment safety standards in the US and Canada. For enterprise IT and security deployments, UL listing is typically required by facilities management, AHJ (authority having jurisdiction), and insurance underwriters before energizing new equipment — not optional in most commercial installs.
- 0–40°C Operating Temperature Range: Standard data center and IDF/MDF room temperature range. The unit is not rated for outdoor or uncontrolled environments — keep it in a conditioned space. Storage is rated to 45°C, so short-term warehouse or staging area exposure is tolerated.
- 0–95% Relative Humidity (Operating and Storage): Wide humidity tolerance means this unit can be staged or stored in non-climate-controlled warehouses before installation without condensation damage, provided temperatures stay in range.
- 2057mm Height (Floor-Standing Form Factor): At roughly 81 inches tall, 610mm wide, and 914mm deep, this is not a rack-mount unit — it's a standalone floor cabinet or in-row PDU. Plan floor space and cable management accordingly. The depth of 914mm (about 36 inches) is substantial; verify aisle clearance before specifying for a tight row.
- APC InfraStruxure Ecosystem: As part of the broader APC by Schneider Electric InfraStruxure line, this PDU is designed to integrate with APC's physical infrastructure management ecosystem. If your facility already runs APC UPS, cooling, or management software, this unit is a natural fit for a unified power chain from utility to rack.
Integration and Compatibility
The PD40F6FK1-M operates on 208V three-phase AC at 60 Hz — confirm your facility panel delivers this before ordering. North American data centers running standard three-phase distribution are the primary fit. Single-phase 208V or 240V facilities will need to verify phase configuration before connecting. The NEMA L21-20 and L6-30R outputs are industry-standard twist-lock connectors; most enterprise server and networking equipment in this power class ships with compatible plugs or short whip cords. For large-scale PoE switch deployments or surveillance infrastructure rooms, pairing this PDU with a structured network infrastructure plan ensures your power distribution doesn't become the bottleneck in a high-density rollout. Review your local electrical code and panel capacity with a licensed electrician before commissioning — at 155A per phase, this is not DIY territory.
Frequently Asked Questions
Q: What output receptacles does the PD40F6FK1-M include?
A: The PD40F6FK1-M includes one NEMA L21-20 receptacle (three-phase, 20A, 120/208V twist-lock) and one NEMA L6-30R receptacle (single-phase, 30A, 250V twist-lock). These are the output connections listed in the product specifications.
Q: What is the maximum input current per phase on the PD40F6FK1-M?
A: The unit is rated for a maximum input current of 155A per phase, with a maximum continuous draw of 139A per phase, at 208V AC / 60 Hz.
Q: Is the PD40F6FK1-M rack-mountable?
A: No. At 2057mm tall, 610mm wide, and 914mm deep, this is a floor-standing unit. It is not designed for standard 19-inch rack mounting. Plan for in-row or standalone floor installation with adequate aisle clearance.
Q: What certifications does the PD40F6FK1-M carry?
A: The PD40F6FK1-M is listed to UL 60950 and cUL standards, covering information technology equipment safety in the United States and Canada.
Q: What is the operating temperature range for the PD40F6FK1-M?
A: The operating temperature range is 0°C to 40°C (32°F to 104°F). Storage is rated to 45°C. This unit requires a conditioned indoor environment and is not rated for outdoor installation.
Q: What input voltage does the PD40F6FK1-M require?
A: The unit requires 208V AC, three-phase, 60 Hz input. Verify your facility panel configuration before specifying this unit — it is not compatible with single-phase-only panels or 50 Hz international supply.
The PD40F6FK1-M is one of the larger floor-standing PDUs in the APC InfraStruxure line — the 155A-per-phase input rating is the specification that defines its deployment context. You're not specifying this unit for a small IDF closet; this belongs in a primary data hall or large MDF room where you're distributing from a dedicated 208V three-phase circuit at panel ampacities most facilities only have in their main electrical room.
Technical Highlights:
- 155A Max / 139A Continuous Per Phase: The 16A spread between max and continuous rating is the thermal derating margin. Running at or near 139A continuously keeps the unit within safe operating limits — don't spec this into a circuit where your load regularly exceeds 139A per phase or you'll be chasing breaker trips.
- Dual Output Type (L21-20 + L6-30R): Having both a three-phase L21-20 and a single-phase L6-30R in one unit means you can feed mixed equipment without a secondary distribution panel. In a surveillance equipment room, for example, the L21-20 feeds your high-draw compute shelf while the L6-30R handles a large standalone UPS or storage unit running at 240V.
- 2057mm × 914mm Floor Footprint: At 81 inches tall and 36 inches deep, this unit takes real floor space. In a raised-floor data center, verify your floor tile weight rating — at these dimensions and with connected cable weight, you'll want to know your floor load spec before positioning.
Deployment Considerations:
- At 208V three-phase, this unit requires a dedicated circuit from a three-phase panel — confirm phase availability and panel capacity with your electrician before procurement. Retrofitting a single-phase facility for this unit is not a minor job.
- The cUL listing covers Canadian installations, but always verify with your local AHJ — some jurisdictions have additional requirements for PDUs operating above 100A that go beyond UL listing alone.
The PD40F6FK1-M fits best in a purpose-built data hall or large enterprise MDF room where 208V three-phase infrastructure is already in place and the load aggregation from multiple high-draw rack rows justifies a unit at this ampacity. It is not the right pick for a small server room or edge deployment — but for a primary distribution tier in a correctly provisioned facility, it does the job without adding unnecessary complexity.
