APC Netshelter SX GEN 2 45U Server Rack Enclosure 600MM X 1070MM W/ Sides Black - AR3105B2

APC by Schneider Electric AR3105B2 45U NetShelter SX Gen 2 Server Rack Enclosure

Overview

The APC NetShelter SX Gen 2 AR3105B2 is a 45U freestanding server rack enclosure built for high-density data center and server room deployments where structural integrity, cable management headroom, and physical security all matter from day one. At 600mm wide and 1070mm deep, this enclosure fits the standard 19-inch (48.3 cm) equipment form factor while providing enough depth to house modern high-density servers, network switches, patch panels, and cable management accessories without compromising airflow or serviceability. If you're specifying racks for a mid-to-large NVR deployment, a structured cabling room, or a dense compute environment, the AR3105B2 is sized for the real workloads — not a lab demo.

Key Features

• 45U Rack Capacity: Forty-five rack units of usable space means you can stack a full complement of 1U and 2U servers, patch panels, PDUs, and KVM switches in a single enclosure without immediately running out of room. That matters when you're trying to minimize floor space while maximizing density in a colocation bay or server closet.
• 1814 kg Static Load Capacity: The enclosure is rated to support up to 1814 kg of static weight — enough for the heaviest enterprise server and storage configurations you're likely to spec. Practically, this means you won't need to worry about the rack structure becoming the limiting factor when loading up with dense blade or storage chassis.
• 1020 kg Rolling Load Capacity: Even when fully loaded, the AR3105B2 supports up to 1020 kg while rolling — critical during installation, data center reconfiguration, or when you need to move a populated rack without a full teardown. This is a meaningful number when your nearest elevator has a weight limit and you're moving racks across a raised floor.
• 600mm Width × 1070mm Depth: The 600mm width accommodates standard 19-inch rackmount equipment without wasted space, while the 1070mm depth handles deep 2-post and 4-post equipment, including modern 1U servers that routinely run 800–900mm deep. Shallower enclosures force cable management compromises; this one doesn't.
• 19.1mm to 915mm Adjustable Mounting Depth: The mounting rails adjust from 191mm to 915mm, letting you install shallow patch panels or deep compute nodes in the same enclosure without buying separate rail kits. This flexibility reduces accessory cost and simplifies procurement across mixed equipment environments.
• 270° Door Opening Angle: A 270-degree door swing means the front and rear doors fold completely out of the way during installation and maintenance. In tight aisles where a 90° or 180° swing creates a collision hazard with adjacent racks or hot-aisle containment panels, this matters for both safety and workflow speed.
• Key-Locked Side Panels and Door: Both side panels and the enclosure include key locks — standard for environments with mixed-access personnel or compliance requirements (PCI DSS, HIPAA, SOC 2) that mandate physical access controls at the rack level. Locks ship with the enclosure; no separate hardware required.
• Included Side Panels: Side panels ship included with the AR3105B2, which matters if you're building a row of racks: end-of-row enclosures need side panels for containment and aesthetics, and buying them separately adds cost and lead time. Center racks in a row can share panels between adjacent units.
• Adjustable Feet: Leveling feet let you compensate for uneven raised floors without shimming — relevant in older data centers where floor tiles aren't perfectly level. Proper leveling also ensures front and rear doors align correctly on install.
• Black Finish: The all-black enclosure finish is standard for modern data center environments and aligns with hot-aisle/cold-aisle containment aesthetics. It also simplifies visual identification of populated vs. empty rack positions in dimly lit server rooms.
• 2124mm Height: At just over 2.1 meters, the AR3105B2 fits comfortably under standard 2.4-meter (8-foot) ceiling heights with clearance for overhead cable trays. Verify ceiling height before deployment in basement or mezzanine server rooms with lower clearances.

Integration & Compatibility

The AR3105B2 is designed around the standard 19-inch (48.3 cm) EIA rack form factor, making it compatible with virtually all rackmount server, networking, storage, and UPS equipment from major vendors. The 1070mm depth accommodates current-generation compute equipment, including extended-depth servers that exceed 900mm. Adjustable mounting rails allow configuration for both shallow 2-post-style mounting and deep 4-post mounting without additional hardware. For physical security integrators building out network video recorder stacks or head-end equipment rooms, this enclosure pairs directly with standard 1U and 2U NVR appliances, PoE switch arrays, and patch panel assemblies. Consult APC's compatibility documentation for specific PDU mounting configurations and blanking panel sizing within the server rack enclosure family.

Frequently Asked Questions

Q: What is the maximum static load capacity of the AR3105B2?

A: The AR3105B2 supports up to 1814 kg of static weight. The rolling load capacity (when moving the populated rack) is rated at 1020 kg.

Q: Does the AR3105B2 ship with side panels included?

A: Yes, side panels are included with the AR3105B2. Both side panels also include key locks for physical security.

Q: What is the adjustable mounting depth range on the AR3105B2?

A: The mounting rails are adjustable from a minimum of 191mm to a maximum of 915mm, accommodating everything from shallow patch panels to deep enterprise servers in the same enclosure.

Q: What rack unit capacity does the AR3105B2 provide?

A: The AR3105B2 provides 45U of usable rack space within an overall enclosure height of 2124mm.

Q: What is the door opening angle on the AR3105B2?

A: The doors open to 270°, swinging fully clear of the rack face — useful in tight aisle configurations where a standard 90° or 180° swing would obstruct adjacent equipment or personnel.

Q: What are the overall external dimensions of the AR3105B2?

A: The AR3105B2 is 600mm wide, 1070mm deep, and 2124mm tall. The package width is 748mm, which affects doorway and elevator clearance during delivery and installation.

Ted Perry

The spec I keep coming back to on the AR3105B2 is the 1020 kg rolling load rating — most integrators focus on static capacity and then discover mid-deployment that moving a fully populated rack across a raised floor or through a doorway becomes a multi-person logistics problem. APC published that rolling number for a reason, and it directly affects how you plan your installation sequence and whether you populate the rack in place or stage it in a loading area first.

Technical Highlights:

• 45U / 1814 kg Static Capacity: High-density server rooms loading out full compute stacks with storage arrays won't hit the structural ceiling — 1814 kg covers even aggressive blade-chassis configurations.
• 191mm–915mm Rail Adjustment: The full range eliminates the need for separate rail kits when mixing shallow patch panels with deep 1U servers in the same rack — a real procurement simplification on multi-vendor builds.
• 270° Door Swing: In hot-aisle/cold-aisle containment rows where adjacent rack doors create collision points, the 270° swing keeps the aisle clear during maintenance windows without removing doors entirely.

Deployment Considerations:

• The package width is 748mm — 148mm wider than the enclosure itself. Measure doorways, elevator cabs, and loading dock entries before delivery, especially in older buildings where 36-inch doorways are common. A 748mm-wide crated rack will not clear a standard 36-inch (914mm) opening with much margin.
• At 2124mm tall, verify overhead clearance for cable trays, sprinkler heads, and HVAC runs in your server room before committing to row placement — particularly in basement or mezzanine installations with non-standard ceiling heights.

The AR3105B2 is the right specification for a primary data center row build or a large head-end equipment room where you're installing a half-dozen or more populated racks and need consistent depth, access, and load capacity across every position in the row.