APC by Schneider Electric Netshelter SX 48U 750MM Wide X 1200MM Deep Enclosure Without - AR3357X609

APC by Schneider Electric AR3357X609 NetShelter SX 48U 750mm x 1200mm Open Frame Rack Enclosure

Overview

The APC by Schneider Electric AR3357X609 is a 48U, 750mm-wide by 1200mm-deep steel rack enclosure from the NetShelter SX line — a workhorse format for data centers, server rooms, network closets, and enterprise IT deployments that need a structured, standards-compliant home for high-density equipment. At 1200mm of usable depth, it accommodates deep dual-post server hardware without the gymnastics of cable management workarounds that shorter enclosures force on integrators. Explore the full APC by Schneider Electric catalog for compatible PDUs, cable managers, and blanking panels.

This enclosure is rated to server rack enclosure standards UL 2416 and UL 60950-1, and dimensionally conforms to EIA-310E — the governing standard for 19-inch rack equipment. That triple certification matters in environments where an AHJ inspection or insurance audit is part of commissioning. Steel construction means it can bear the static and dynamic loads that come with dense rack fills — no flex, no racking (pun intended) under load.

Key Features

• 48U Rack Height: 48 rack units provides enough vertical real estate to consolidate a full server stack, patch panels, UPS, and network gear into a single enclosure — reducing footprint on the data room floor without sacrificing expansion headroom. Most mid-scale server deployments top out around 36–42U populated; 48U gives you room to grow without rolling in a second rack mid-project.
• 750mm Interior Width: The 750mm-wide format (versus the 600mm narrow option) accommodates wider equipment flanges, side-mounted cable troughs, and vertical cable managers inside the enclosure without compressing usable rack space. If you're running blanking panels on the sides or intend to install a containment system, the extra 150mm makes a noticeable difference during builds.
• 1200mm Depth: At greater than 3 feet deep, this enclosure fits full-depth 1U and 2U servers that would overhang or require adapter rails in a 1000mm-deep rack. Blade chassis, dense storage arrays, and dual-PSU tower-in-rack configurations all benefit from the added clearance — front and rear cable bend radii stay within spec and airflow paths remain unobstructed.
• Steel Construction: Steel framing and panels deliver the structural rigidity required under seismic zone or transport-rated deployments. This isn't a sheet-metal cabinet that flexes when you torque down rail bolts — the material choice is what keeps EIA-310E square-hole alignment consistent across all 48U even when the rack is fully loaded.
• UL 2416 Listed: UL 2416 certification covers the enclosure itself as an IT equipment rack — not just the components inside. This is the listing that AHJs in the US look for on data center builds and that some enterprise procurement policies require before a rack touches the floor. It's also the basis for insurance coverage on rack-mounted equipment in many commercial facilities.
• UL 60950-1 Compliance: Addresses safety of information technology equipment, relevant when the enclosure is part of a UL-listed system assembly. Integrators building out managed rack systems for healthcare, financial, or government clients will recognize this as a required line item on compliance documentation.
• EIA-310E Conformance: The EIA-310E standard governs the mounting hole pattern, rail spacing, and unit dimensions of 19-inch rack equipment. Conformance means every standard 19-inch rail kit, shelf, PDU, and component you already source will mount flush and true — no shimming, no custom hardware, no surprises at install time.
• Black Finish: The black powder coat finish is the de facto standard for data center and server room aesthetics, compatible with hot-aisle/cold-aisle containment systems, overhead cable trays, and the visual conventions most enterprise IT environments enforce. Minor consideration, but worth noting for integrators delivering turnkey builds where the client's facilities team has opinions about consistency.

Integration & Compatibility

As an EIA-310E-conformant rack enclosure, the AR3357X609 accepts any standard 19-inch rackmount equipment — servers, switches, patch panels, KVM drawers, PDUs, and UPS units — without modification. The 750mm width and 1200mm depth are sized to accommodate APC's own NetShelter accessory ecosystem: vertical cable managers, blanking panel kits, toolless rail kits, and side panels all mount without adapter hardware when sourced from the same product family.

If you are deploying this enclosure as part of a larger data center buildout, pair it with a rack PDU and overhead cable management to complete the power and cable infrastructure. For seismic or raised-floor deployments, verify the static load rating against your fully-populated rack weight before finalizing the design — the steel frame is rated for substantial loads, but ballasted deployments on soft subfloor require site-specific engineering sign-off. Consult a data center infrastructure planning guide for load, cooling, and cable pathway considerations specific to high-density rack builds.

Frequently Asked Questions

Q: What rack unit height does the AR3357X609 provide?

A: The AR3357X609 provides 48 rack units (48U) of usable vertical space, suitable for high-density server, networking, and power equipment installations.

Q: What are the interior dimensions of the AR3357X609 enclosure?

A: The enclosure is 750mm wide and 1200mm deep — wider than the standard 600mm format, accommodating larger equipment flanges, internal cable managers, and full-depth server hardware without overhang.

Q: What certifications does the AR3357X609 carry?

A: The AR3357X609 is listed to UL 2416 (IT equipment racks) and UL 60950-1 (information technology equipment safety), and conforms to EIA-310E dimensional standards for 19-inch rack equipment.

Q: Will standard 19-inch rail kits and PDUs mount in this enclosure?

A: Yes. EIA-310E conformance ensures compatibility with any standard 19-inch rackmount equipment and rail kit — servers, patch panels, KVM drawers, and PDUs all mount without modification or adapter hardware.

Q: What is the enclosure made of?

A: The AR3357X609 is constructed from steel, providing the structural rigidity needed for fully-loaded deployments and maintaining EIA-310E rail alignment under load.

Q: Is the AR3357X609 available in colors other than black?

A: The AR3357X609 is specified in black. APC's NetShelter SX line includes other SKU variants for different configurations — verify the specific model number when ordering if color or dimension requirements differ from this unit.

Ted Perry

The AR3357X609 is the enclosure I reach for when a project calls for 1200mm depth and the integrator doesn't want to fight rail fit on high-density dual-PSU servers. The 48U height paired with the 750mm-wide format gives you genuine flexibility — you're not shoehorning cable managers into leftover space, and you're not calling APC support because a blade chassis extends 2mm past the rear door plane.

Technical Highlights:

• UL 2416 Listing: This is the listing that separates enclosures that pass a real AHJ inspection from ones that don't. On healthcare or financial builds where the AHJ walks the floor before occupancy, having the UL 2416 plate on the enclosure eliminates a common punch-list item.
• 1200mm Depth: Full-depth servers — think dual-socket 1U with rear cable arms — need this. A 1000mm enclosure forces you to either remove the cable arm or let it compress against the rear door. At 1200mm, rear cable bend radii stay within spec and the door closes cleanly.
• EIA-310E Conformance: Square-hole, 19-inch standard. Every rail kit, shelf, and PDU in your parts inventory drops straight in. No expediting specialty hardware or explaining to the client why the build took an extra day.

Deployment Considerations:

• At 48U and 1200mm deep, this enclosure has real mass when populated. Confirm floor loading (static and dynamic) before placement on raised floors or upper floors of older buildings — a fully-loaded rack at this size can exceed 1,500 lbs depending on equipment density.
• The 750mm width is a benefit inside the enclosure, but it adds to the footprint on the data room floor. Row spacing and aisle-containment geometry should be confirmed against your facility's hot-aisle/cold-aisle layout before ordering multiple units for a new row build.

This enclosure is the right call for enterprise server room buildouts and colocation cage deployments where full-depth hardware, UL listing documentation, and EIA-310E parts compatibility are non-negotiable requirements — not for lightweight network closets where a 600mm-wide, 1000mm-deep unit would do the job at lower cost and smaller footprint.