APC by Schneider Electric Netshelter SX 45U 750MM Wide X 1070MM DE - AR3155SP

APC by Schneider Electric AR3155SP NetShelter SX 45U Freestanding Rack Enclosure

The APC by Schneider Electric AR3155SP is a 45U, 750mm-wide by 1070mm-deep freestanding rack enclosure engineered for high-density IT, network, and physical security infrastructure deployments. With a static load rating of 1,700.97 kg and a rolling load rating of 1,020.58 kg, this is a rack built to carry fully populated blade servers, dense NVR arrays, and heavy switching equipment without flex or sag. If you're speccing a new server room, security operations center, or multi-rack surveillance head-end, the AR3155SP belongs on your short list of enclosures to evaluate. Browse the full APC by Schneider Electric catalog for compatible power and cooling accessories.

Key Features

• 45U Capacity, 19-inch EIA-310E Rail Standard: Forty-five rack units across 750mm of internal width accommodates virtually every standard-width 1U–8U device on the market. EIA-310E compliance means your rail-mounted equipment — from 1U patch panels to 8U UPS units — drops in without custom adapters or shimming.
• 1,700.97 kg Static Load / 1,020.58 kg Rolling Load: These are real working numbers, not theoretical maximums. A fully loaded rack of enterprise switches, NVRs, and dense storage can easily exceed 800 kg — the AR3155SP leaves meaningful headroom above that. The rolling rating of 1,020 kg means you can reposition a heavily loaded rack during initial install without unloading it first, which matters in tight data closets.
• 750mm Width × 1070mm Depth: The 750mm footprint is wider than a standard 600mm rack, providing extra side-cable management space and easier hand access to rear connectors. The 1070mm depth handles deep enterprise chassis — including extended-depth UPS units and rear-cabled switching equipment — without forcing cable compression. Check our rack enclosures category for dimensional comparison across the NetShelter line.
• Mesh Front Door with Key Lock: Mesh construction maintains airflow through the front face rather than choking intake — critical when you're pulling 15–20 kW through a dense rack. The keyed cylinder lock limits physical access to credentialed personnel, a baseline requirement for data center compliance and security equipment rooms alike.
• Blind Side Panels with Independent Key Locks: Side panels ship included and use a keyed locking mechanism independent from the front door. This matters in multi-rack rows where adjacent racks can be accessed by neighboring teams — each enclosure maintains its own access zone. Blind panels also reduce inter-rack cross-talk airflow, keeping hot exhaust from the adjacent cabinet from recirculating into intake.
• Adjustable Feet + Castor Wheels: Both adjustable leveling feet and integrated castor wheels ship on the same unit. Roll it into position, lower the feet, level the rack — the castors retract from floor contact when the feet are deployed, eliminating vibration transfer and wobble under heavy dynamic loads. No need to source a separate caster kit or leveling pad.
• UL 2416, UL 60950-1, EIA-310E Certifications: UL 2416 is the specific UL standard for information technology equipment racks — this is what your facilities team and AHJ will ask for on commercial build-outs. UL 60950-1 covers IT equipment safety broadly. Having all three certifications in a single enclosure simplifies the permit and inspection process considerably. If you need a structured cabling guide for planning your rack installation, that resource covers cable management best practices alongside enclosure selection.
• Black Finish: Standard black powder coat matches the NetShelter SX family and integrates cleanly into mixed-vendor rack rows. Not a cosmetic afterthought — consistent finish across a multi-rack deployment reads as intentional infrastructure to auditors and visiting clients.

Integration and Compatibility

The AR3155SP conforms to the EIA-310E 19-inch rack standard, making it compatible with equipment from every major vendor in the networking, storage, server, power, and physical security markets. APC's own NetShelter SX accessory ecosystem — including blanking panels, cable managers, roof fan trays, and side-mount brackets — is designed around this enclosure's dimensions. The 1070mm internal depth accommodates extended-chassis UPS units such as the APC Smart-UPS and Symmetra families, as well as deep blade chassis from major server manufacturers.

For physical security deployments specifically, the enclosure depth handles rackmount NVRs, video management servers, and high-channel PoE switch stacks simultaneously. If you're building a surveillance head-end or security operations center, pair this with managed PoE switches and rackmount NVR appliances for a complete enclosed infrastructure stack. The keyed access controls satisfy most physical security compliance frameworks that require controlled access to network and recording equipment.

The 2,124mm overall height (floor-to-top) is standard for 45U enclosures — confirm ceiling clearance before delivery, particularly in older buildings with suspended tile ceilings at 2.4m or below.

Frequently Asked Questions

Q: What is the maximum static load capacity of the AR3155SP?

A: The AR3155SP is rated for a maximum static load of 1,700.97 kg. The rolling load capacity — meaning the maximum weight when moving the rack on its castor wheels — is 1,020.58 kg.

Q: Does the AR3155SP include side panels, and do they lock?

A: Yes, blind side panels are included and feature their own independent key lock, separate from the front door lock. This allows each side of the enclosure to be secured independently from the main door access.

Q: What certifications does the AR3155SP carry?

A: The AR3155SP is certified to UL 2416 (IT equipment racks), UL 60950-1 (information technology equipment safety), and EIA-310E (the 19-inch rack standard). These three cover the primary requirements for commercial data center and IT room installations.

Q: Can I move the AR3155SP while it is loaded with equipment?

A: Yes, within the rolling load limit of 1,020.58 kg. The enclosure ships with integrated castor wheels for repositioning during installation. Adjustable leveling feet are also included — deploy the feet after positioning to stabilize the rack and lift it off the castors.

Q: What are the external dimensions of the AR3155SP?

A: The AR3155SP measures 750mm wide × 1070mm deep × 2124mm tall. Internal usable rack space is 45U on a standard 19-inch (48.3cm / EIA-310E) rail pattern.

Q: What type of front door does the AR3155SP use, and why does it matter?

A: The front door uses mesh construction, which maintains airflow through the door face rather than restricting it. In high-density deployments where heat dissipation is critical, a mesh front door prevents the intake starvation that solid-door enclosures can cause at high load densities.

Jerry Tildsen

The AR3155SP sits in a practical sweet spot for physical security and mixed IT infrastructure builds — the 1,070mm internal depth is what separates this from shallower 600mm or 800mm enclosures that force you to compromise on cable dressing or rule out certain chassis depths entirely. When I spec this for a surveillance head-end, that extra depth is what lets you run a properly terminated cable tray to the rear of a deep NVR or UPS without the kind of sharp bends that cause intermittent faults six months post-install.

Technical Highlights:

• 1,700.97 kg Static Load Rating: In practice, a 45U rack fully populated with 1U servers and dense switching rarely exceeds 700–800 kg — this rating gives you a real safety margin, not a theoretical one, and satisfies the structural load documentation that commercial facilities managers require before equipment moves in.
• Dual Independent Key Locks (Front Door + Side Panels): The front door and side panels each have their own keyed cylinder — not a single shared core. In co-managed environments where your team controls the rack but facilities manages the room, that independence matters for access auditing and incident response.
• UL 2416 + EIA-310E Dual Certification: UL 2416 is rack-specific — not just a general IT safety mark. Combined with EIA-310E rail compliance, this pair satisfies the two questions that always come up during commercial inspections: is the rack rated for the environment, and will standard-width equipment mount without modification.

Deployment Considerations:

• The 2,124mm height requires ceiling clearance verification before delivery — many older commercial spaces with suspended ceilings run at 2,400–2,500mm, which barely clears this enclosure with no room for overhead cable management or top-mount fan trays.
• Rolling load is rated at 1,020.58 kg — roughly 60% of static. If you're moving a near-fully-loaded rack to its final position, calculate live load before rolling, not after. Exceeding the rolling limit on a heavy concrete floor can damage castor mounts and introduce rack-frame stress that isn't immediately visible.

The AR3155SP is the right call for a dedicated surveillance or security operations center rack row where depth, load rating, and independent access control all matter simultaneously — not a general-purpose office closet where a 600mm shallow rack would do the job at lower cost.