APC by Schneider Electric AR3350SP 42U 750mm Wide NetShelter SX Rack Enclosure
Overview
The AR3350SP is APC by Schneider Electric's 42U NetShelter SX rack enclosure in the 750mm wide configuration — a data center and server room workhorse built for high-density IT, networking, and security infrastructure deployments. At 78.4 inches tall with a 47.2-inch depth, this is a full-height, full-depth enclosure sized for today's deep 1U/2U servers, high-capacity NVRs, and dense patch environments. If you're consolidating network equipment, video recorders, or compute nodes into a single cabinet footprint, the AR3350SP is engineered to carry that load — literally. Browse the full APC by Schneider Electric catalog for compatible power distribution, UPS, and accessories.
Key Features
- 42U Usable Capacity: 42 rack units of usable space accommodates a full stack — top-of-rack switching, patch panels, servers, security appliances, and a UPS — without overflow to a second cabinet in most medium-density deployments. That matters when floor space costs money.
- 750mm (29.5 in) Wide Footprint: The extra width over the standard 600mm form factor provides meaningful side clearance for cable management arms, vertical PDUs, and high-density SFP/fiber patching. If your design calls for blanket panels and structured cabling on both sides, the 750mm body is the right choice — 600mm becomes a cable fight at scale.
- 47.2-inch (120cm) Usable Depth: Maximum mounting depth of 41.3 inches means even the longest 2U and 4U servers fit without the rear-door clearance games that bite you on shallower cabinets. Minimum mounting depth of 10.31 inches keeps shallow 1U patch panels and fiber housings stable too.
- 3,750 lb Static Load / 2,250 lb Dynamic Load Rating: These aren't theoretical numbers — UL 2416 verification means the structure has been tested. At 3,750 lb static, you can populate every rack unit with dense storage or compute without worrying about frame deflection. The 2,250 lb dynamic (rolling) rating covers reconfiguration moves across raised floor tiles without disassembly.
- 14-Gauge EIA Mounting Rails: Heavier-gauge rails than you'll find on lighter-duty enclosures. This directly affects how securely high-mass equipment (dense storage arrays, large UPS modules) captures in the rail without flex or racking. If you've ever seen a 2U server torque a thin rail during a seismic event or a hard dock, rail gauge is the spec that prevented it.
- 16-Gauge Front and Rear Doors, 16-Gauge Posts: Structural consistency across doors and posts means the frame maintains geometry under load. 18-gauge roof and side panels complete the enclosure — lighter where mass isn't load-bearing, heavier where it is.
- 19-inch EIA-310E Rail Spacing: Full compliance with EIA-310E ensures any standard 19-inch rackmount equipment installs without adapter kits or rail shimming. If it's EIA-compliant, it mounts — no exceptions, no surprises.
- UL 2416 and UL 60950-1 Listed: Dual UL listing covers both the enclosure structure (2416) and the electrical safety environment (60950-1). For data center facility managers and enterprise IT departments requiring documented compliance for insurance or audit purposes, these listings close the checklist item without additional testing.
- Black Finish: Standard data center black — blends into any raised-floor or in-row cooling environment, maintains visual coherence with APC's broader power and UPS product family, and doesn't show dust accumulation the way lighter finishes do in high-particulate environments.
- Net Weight 355.74 lb (161.36 kg): Substantial but within standard data center floor loading specs. Factor this into your structural floor load calculations before placement — at full population, a dense 42U enclosure can approach 1,500–2,000 lb total depending on equipment, which matters on older raised floor systems.
Integration and Compatibility
The AR3350SP is designed around open rack enclosure standards — 19-inch EIA-310E mounting rails accept any standards-compliant rackmount hardware without vendor lock-in. APC's NetShelter SX line is widely used alongside APC Smart-UPS and Symmetra power systems, metered and switched PDUs, and APC's cable management accessories (horizontal and vertical). The 750mm wide body accommodates side-mount vertical PDUs without consuming rack units, which preserves the full 42U for active equipment. The 120cm depth pairs well with APC's NetShelter SX cable management panels and blanking panels. Consult APC's published accessory compatibility matrix for specific PDU rail-mount kits and airflow blanking panel part numbers.
Frequently Asked Questions
Q: What is the maximum equipment load the AR3350SP can support?
A: The AR3350SP is rated for a static load of 3,750 lb (1,701 kg) and a dynamic (rolling) load of 2,250 lb (1,020.6 kg), both per UL 2416 testing. Static rating applies to installed, stationary equipment; dynamic applies when the cabinet is rolled across a floor surface.
Q: What is the mounting depth range for the AR3350SP?
A: The maximum mounting depth is 41.3 inches (104.8 cm) and the minimum is 10.31 inches (26.19 cm). This range accommodates both deep servers and shallow 1U patch panels or fiber housings within the same enclosure.
Q: Is the AR3350SP compatible with standard 19-inch rackmount equipment?
A: Yes. The AR3350SP uses 19-inch EIA-310E compliant mounting rails. Any equipment built to the EIA-310E standard installs directly without adapter kits.
Q: What is the warranty on the AR3350SP?
A: APC covers the AR3350SP with a 5-year repair or replace manufacturer warranty.
Q: What standards certifications does the AR3350SP carry?
A: The AR3350SP is listed to UL 2416 (rack enclosure structural standard), UL 60950-1 (IT equipment electrical safety), and EIA-310E (19-inch rack mounting standard).
Q: How wide is the AR3350SP and how does the 750mm width affect installation planning?
A: The AR3350SP is 29.5 inches (75 cm) wide. The 750mm footprint is wider than the standard 600mm configuration, which provides additional clearance for vertical cable managers and PDU side-mounting. Verify your row spacing and aisle width accommodate the wider footprint before placement.
When I specify a rack enclosure for a high-density security or IT infrastructure build, the load rating is the first number I check — and on the AR3350SP, that's a 3,750 lb static capacity verified under UL 2416. That figure isn't marketing; it's a tested structural limit that matters the moment you start stacking NVRs, storage nodes, and power distribution into the same 42U frame.
Technical Highlights:
- 3,750 lb / 2,250 lb Load Ratings: Static and dynamic ratings both UL 2416-tested. At 2,250 lb dynamic, you can roll a fully populated cabinet across raised floor tiles during a rack reconfiguration without disassembling it first — a real operational advantage in live data center environments.
- 14-Gauge EIA Mounting Rails: Heavier rail gauge than economy enclosures resists flex under high-mass equipment. Dense storage arrays and large rackmount UPS modules sit stable without the rail deflection that causes alignment issues during hot-swap operations.
- 41.3-inch Maximum Mounting Depth: With a 120cm external depth, the AR3350SP accepts the longest 2U/4U servers on the market with rear door clearance to spare. That 41.3-inch interior mounting depth is the actual constraint — measure your deepest equipment against it before ordering.
Deployment Considerations:
- At 355.74 lb empty and a shipping weight of 607 lb, plan your receiving dock and floor loading before delivery. Two-person uncrating is a minimum; a pallet jack rated for the shipping weight is strongly recommended for staged delivery to upper floors.
- The 750mm wide footprint requires more row clearance than a standard 600mm cabinet — verify your existing row spacing before committing. If your rows were designed around 600mm, this body adds 150mm (roughly 6 inches) per rack that compounds across a full row.
The AR3350SP is the right specification for enterprise security operations centers, colocation deployments, and high-density video surveillance backrooms where a mix of NVRs, servers, and switching gear needs to coexist in a single, structurally sound, UL-listed enclosure with a 5-year manufacturer warranty behind it.
