APC by Schneider Electric Netshelter SX 45U 750MM Wide X 1200MM Deep Enclosure - AR3355SP

APC by Schneider Electric AR3355SP NetShelter SX 45U 750mm x 1200mm Rack Enclosure

Overview

The AR3355SP is a 45U, 750mm-wide by 1200mm-deep rack enclosure from APC's NetShelter SX line — a floor-standing cabinet designed for high-density server, networking, and power distribution deployments where airflow management, cable routing depth, and structural capacity are non-negotiable. Standing 83.62 inches (212.4 cm) tall and weighing 372.6 lb (169 kg) empty, this enclosure is engineered for raised-floor data centers, server rooms, and IDF/MDF closets where equipment density and long-term serviceability matter. Explore the full APC by Schneider Electric catalog for compatible PDUs, UPS systems, and airflow accessories.

Key Features

• 45U Usable Height: 45 rack units of usable space translates to practical density — enough to house a full tower of 1U servers, patch panels, and power distribution without splitting workloads across two cabinets. For a typical enterprise edge deployment, that means consolidating compute, switching, and UPS into a single managed footprint.
• 750mm Cabinet Width: The 750mm wide profile accommodates standard 19-inch rackmount equipment while providing additional side clearance for high-density cabling, blanking panels, and vertical cable managers. This is the practical choice when you're running structured cabling alongside active gear — narrower 600mm cabinets force cable routing compromises that come back to haunt you during moves and adds.
• 1200mm Depth: At 1200mm deep, the AR3355SP handles the longest rackmount servers on the market — including extended-depth blade chassis, high-density storage arrays, and full-depth UPS units — without rear-door interference. Shallow 900mm or 1000mm cabinets force equipment hang-over or cable strain; this depth eliminates that problem entirely.
• Structural Integrity at 372.6 lb Empty: The enclosure itself weighs 372.6 lb (169 kg), a direct indicator of the heavy-gauge steel frame and reinforced construction that allows it to carry enterprise-class equipment loads. This is a cabinet built to stay in place under full load, not flex or rack when doors are opened or equipment is serviced.
• Floor-Standing, Non-Rack-Mountable Design: The AR3355SP is a free-standing floor enclosure — it is not designed to be nested inside another rack. That distinction matters for raised-floor deployments and for facilities teams calculating floor loading: at 83.62 inches tall and full equipment weight, seismic bracing and floor anchor planning are relevant pre-installation considerations.
• NetShelter SX Platform: The SX series is APC's commercial data center enclosure line, which means accessories — side panels, roof panels, blanking panels, cable pass-throughs, and containment kits — are widely available and interchangeable across the product family. Investing in the SX platform pays off when you're standardizing across multiple racks or planning future expansion. Browse network cabinets and rack enclosures for compatible accessories and companion units.

Integration and Compatibility

As a passive enclosure, the AR3355SP integrates with virtually any 19-inch rackmount equipment. It is designed to accept APC's own rack power distribution units and UPS systems, as well as third-party servers, switches, patch panels, and KVM infrastructure. The 1200mm depth supports rear cable management accessories and horizontal brush strip pass-throughs. For high-density thermal management, the SX enclosure platform is compatible with APC's hot-aisle/cold-aisle containment systems — a relevant consideration for any deployment running above 5kW per rack. Pairing with a compatible uninterruptible power supply is standard practice for protecting the equipment housed within.

Frequently Asked Questions

Q: What are the physical dimensions of the AR3355SP?

A: The AR3355SP stands 83.62 inches (212.4 cm) tall. It is 750mm wide and 1200mm deep. The empty enclosure weighs 372.6 lb (169 kg).

Q: Can the AR3355SP be rack-mounted inside another enclosure?

A: No. The AR3355SP is specified as not rack-mountable. It is a free-standing floor enclosure intended for data center floor or raised-floor deployment.

Q: How many rack units does the AR3355SP provide?

A: The AR3355SP provides 45U of usable rack space, accommodating standard 19-inch rackmount equipment across all 45 units.

Q: Is the AR3355SP compatible with APC NetShelter SX accessories?

A: Yes. The AR3355SP is part of the NetShelter SX platform, which means side panels, blanking panels, cable managers, roof units, and containment accessories designed for the SX family are compatible.

Q: What is the depth clearance available for server equipment?

A: The enclosure is 1200mm deep, which accommodates extended-depth servers, blade chassis, and full-depth UPS units without rear-door interference or equipment hang-over.

Q: Is seismic anchoring required for the AR3355SP?

A: The AR3355SP is a free-standing floor enclosure weighing 372.6 lb empty. For deployments in seismic zones or on raised flooring, pre-installation planning for floor anchoring and load distribution is strongly recommended.

Eden Phillips

The AR3355SP is a cabinet I'd reach for on any deployment where depth is the constraint — at 1200mm, it's one of the few enclosures on the market that genuinely handles full-depth UPS units and extended-depth blade chassis in the same rack without forcing awkward rear-door modifications or cable strain. The 372.6 lb empty weight tells you exactly what you're working with structurally before a single piece of equipment goes in.

Technical Highlights:

• 45U x 750mm x 1200mm Envelope: This combination of height, width, and depth is the practical maximum for a single-cabinet enterprise deployment — 45U fills a full server row, 750mm gives cable management room that 600mm cabinets simply don't, and 1200mm means no equipment in the current market will bottom out against the rear door.
• 372.6 lb Empty Weight: Heavy-gauge steel construction shows in the empty weight. This is a cabinet that won't flex when fully loaded or torque when a technician opens the rear door under load — relevant when you're housing six-figure compute in a single enclosure.
• NetShelter SX Platform Compatibility: The SX accessory ecosystem is deep — containment kits, roof panels, cable pass-throughs, and side panels are all interchangeable across SX-series cabinets. Standardizing on SX across a row or a room means accessories aren't one-offs.

Deployment Considerations:

• At 83.62 inches tall and 372.6 lb empty, logistics planning is real: door widths, elevator ratings, and raised-floor panel removal all need to be confirmed before delivery, not after.
• The AR3355SP is not rack-mountable — it is a floor enclosure only. If your facility requires wall-mounted or two-post open-frame configurations, this is the wrong form factor regardless of rack unit count.

This enclosure is purpose-built for enterprise data center rows and high-density IDF/MDF rooms where extended-depth equipment is the norm — server consolidation projects, hyperconverged infrastructure builds, or any environment where a 600mm or 1000mm cabinet would force a two-cabinet split on a workload that should live in one.