APC by Schneider Electric AR3106 NetShelter SX 18U Freestanding Rack Enclosure
Overview
The APC by Schneider Electric AR3106 is an 18U, 600mm-wide by 1070mm-deep freestanding rack enclosure from the NetShelter SX line — a well-established platform in enterprise IT and physical security infrastructure. At 925mm tall with a 409 kg rated load capacity, it's built for dense equipment deployments where structural integrity and cable management discipline matter. The 1070mm depth gives you the runway needed for full-depth servers, NVRs, patch panels, and power distribution units without forcing awkward cable bends at the rear. Side panels are included, the front door ships with a key lock, and the black finish is standard for equipment room and wiring closet deployments.
If you're specifying rack infrastructure for a network video recorder stack, edge compute nodes, or a converged security and IT closet, the AR3106 sits in the mid-size range — large enough to house a real system, compact enough to fit in a secondary IDF or smaller equipment room where a full 42U footprint isn't practical.
Key Features
- 18U Capacity in a Compact Footprint: Eighteen rack units in a 925mm-tall enclosure means you can house an NVR, a PoE switch, a patch panel, a UPS, and still have room to grow — without committing to a full-height 42U cabinet that dominates a small IDF closet. For network switches and edge security gear, this is often the right size.
- 409 kg Maximum Load Rating: At 902 lbs of rated capacity, the AR3106 handles dense, heavy equipment without concern. Dense NVR arrays with multiple surveillance-grade HDDs, rackmount UPS units, and stacked switches all fit within this envelope. Don't underestimate load ratings — cheap racks fail structurally under heavy UPS loads.
- 1070mm Usable Depth (19.1mm–921mm Mounting Range): The adjustable mounting rail range spans 191mm to 921mm, accommodating shallow patch panels at the front and full-depth 1U servers or storage arrays at the rear. That 921mm rear rail position is the spec to check against your deepest equipment — most enterprise gear is 700–900mm deep and will fit cleanly.
- 600mm Wide, 19-Inch EIA Mounting Standard: The 600mm width is the narrower NetShelter SX profile — standard for wiring closets and smaller equipment rooms. It conforms to the 19-inch EIA rack standard, so every standard rackmount component installs without adapter rails or custom hardware.
- Side Panels Included: Enclosed side panels ship with the AR3106, which matters for airflow management (hot-aisle/cold-aisle discipline), physical security (no side access without tools), and a finished appearance in customer-visible spaces. Many competing enclosures charge extra for sides.
- Front Door Key Lock: The front door ships with a key lock, providing a basic but functional physical access control layer. In environments where the rack sits in a shared space — an IDF closet used by multiple trades, a retail back room — the key lock is the first line of defense against accidental or opportunistic equipment access.
- IP20 Ingress Protection: IP20 means protection against solid objects larger than 12.5mm (fingers), no dust or liquid protection. This is an indoor-only enclosure — appropriate for climate-controlled equipment rooms, server closets, and data centers. Do not deploy in unconditioned spaces, parking structures, or anywhere with moisture exposure.
- UL 2416, UL 60950-1, and REACH Certified: UL 2416 covers IT rack and cabinet standards directly — relevant for insurance, facility compliance, and enterprise procurement requirements. UL 60950-1 covers IT equipment safety. REACH compliance addresses material substance restrictions for EU-destined deployments. These are verifiable certifications, not marketing claims.
Integration and Compatibility
The AR3106 conforms to the 19-inch EIA/ECA-310 rack standard and is designed to accept standard rackmount equipment from any manufacturer. The 600mm-wide, 1070mm-deep chassis is compatible with the broader APC by Schneider Electric power and UPS ecosystem, including rackmount UPS units, power distribution units, and blanking panels from the NetShelter accessory line. Cable management accessories, additional mounting rails, and toolless mounting hardware are available separately. The included side panels attach without modification. Casters and leveling feet configurations should be confirmed at time of order based on floor load and mobility requirements for your specific installation.
For environments building out a complete physical security infrastructure stack, this enclosure pairs naturally with rackmount NVRs, PoE switches, and access control head-end equipment. See the full range of rack enclosures and cabinets for alternative depth and height configurations if this footprint doesn't match your space.
Frequently Asked Questions
Q: What is the maximum equipment load the AR3106 can support?
A: The AR3106 is rated for a maximum static load of 409 kg (approximately 902 lbs). This covers dense rack configurations including rackmount UPS units, NVR arrays with multiple HDDs, and stacked switching equipment.
Q: Is the AR3106 an open-frame rack or a fully enclosed cabinet?
A: The AR3106 is a fully enclosed freestanding cabinet with included side panels and a key-locked front door. It is not an open-frame rack. This is the correct choice when physical security of the equipment, airflow containment, or a finished appearance is required.
Q: What is the usable mounting depth range inside the AR3106?
A: The adjustable mounting rails span a minimum of 191mm to a maximum of 921mm. This accommodates everything from shallow patch panels to deep 1U servers and storage arrays. Confirm your deepest equipment's rack depth before ordering.
Q: Is the AR3106 suitable for outdoor or unconditioned space installation?
A: No. The AR3106 carries an IP20 ingress protection rating, which provides no protection against dust or moisture. It is rated for indoor, climate-controlled environments only. For outdoor or harsh-environment deployments, a rated outdoor enclosure with IP54 or higher is required.
Q: What certifications does the AR3106 carry?
A: The AR3106 is certified to UL 2416 (IT rack and cabinet standard), UL 60950-1 (IT equipment safety), and REACH (EU material substance compliance). These certifications support enterprise procurement, facility compliance, and EU-market deployments.
Q: Does the AR3106 ship with side panels?
A: Yes. Side panels are included with the AR3106 at no additional cost. The front door key lock is also included. Rear door and additional cable management accessories are available separately.
The AR3106 comes up regularly in mid-size physical security deployments where a full 42U cabinet is overkill but an open-frame rack creates compliance or access control problems. The 409 kg load rating is the spec I always verify first — it's higher than many buyers expect from an 18U enclosure and gives you the headroom to load a rackmount UPS alongside NVR hardware without worrying about structural failure.
Technical Highlights:
- 409 kg Load Rating: At 18U, this rating means you can fully populate the enclosure with heavy equipment — a rackmount UPS alone can run 25–40 kg, and dense NVR storage arrays add up fast. The structural ceiling here is rarely the limiting factor.
- 191mm–921mm Mounting Depth Range: The wide rail adjustment range is the practical workhorse spec. Shallow 1U switches go up front; deep storage or compute gear goes rear. You're not forced to compromise equipment layout because of fixed rail positions.
- UL 2416 Certification: This isn't a checkbox spec — many enterprise and government facilities require UL 2416-listed racks for equipment room buildouts. The AR3106 passes that gate without a variance request.
Deployment Considerations:
- IP20 is indoor-only. If the AHJ or client spec sheet mentions any moisture exposure, partial outdoor exposure, or unconditioned space, the AR3106 is disqualified — source an appropriate IP-rated enclosure instead.
- The 600mm width is the narrower SX profile. Verify your floor plan accommodates 600mm plus side-panel clearance and rear door swing before specifying. The 750mm-wide variant may be required for certain cable management configurations or airflow containment setups.
For a compact IDF closet buildout housing a security head-end — NVR, PoE switch, access control panel, and a small UPS — the AR3106 delivers the right combination of capacity, structural rating, and physical security features without the floor space commitment of a full-height cabinet.
