APC by Schneider Electric Netshelter SX 48U 750MM Wide X 1070MM Deep Enclosure - AR3157SP

APC by Schneider Electric AR3157SP NetShelter SX 48U 750mm Wide Rack Enclosure

Overview

The APC by Schneider Electric AR3157SP is a 48U freestanding rack enclosure from the NetShelter SX line — APC's workhorse cabinet series for structured IT, security infrastructure, and datacenter deployments. At 750mm wide and 1070mm deep, the AR3157SP accommodates today's deeper 1U and 2U servers, NVRs, PoE switch stacks, and patch panels without forcing cable management compromises. If you're building out a wiring room, IDF closet, or physical security head-end, this is the cabinet class that works alongside your active gear rather than fighting it.

The AR3157SP ships in black powder-coat steel and is sized to the universal EIA 19-inch (48.3 cm) mounting standard, so every standard rackmount device — switches, NVRs, UPS units, KVMs, fiber patch panels — drops straight in without adapter rails.

Key Features

• 48U Usable Height (2258mm total cabinet height): 48 rack units gives you room to grow. A fully loaded security head-end — NVR, PoE switch stack, UPS, fiber patch panel, and cable management blanks — typically occupies 20–30U. You're not buying another cabinet in two years.
• 750mm Width: The extra 50mm over a standard 600mm cabinet translates directly to usable cable runway depth on both sides. Side-mounted cable managers, vertical PDUs, and high-density fiber trays fit without squeezing active ports or blocking airflow paths. For network switch deployments with large-diameter trunk cables, this matters.
• 1070mm Interior Depth: Accommodates full-depth servers and deep 2U/4U NVRs without a rear-door adapter kit. Most enterprise NVRs and storage appliances run 700–900mm deep; 1070mm gives genuine front-to-rear breathing room for power cabling and rear-port accessibility.
• 1704 kg Rated Load Capacity: That's over 3,750 lbs — enough for a fully populated UPS, dense server stack, and switch gear simultaneously. In practice, a heavy 48U physical security deployment rarely exceeds 500 kg, so this rating means the cabinet's structural limits are never a planning variable.
• Keyed Lock (Included): Front door keyed access controls visual and physical contact with patch panels, NVR hard drives, and switch management ports — a basic but non-negotiable requirement for any compliance-governed environment (HIPAA, PCI, SOC 2 physical access controls).
• Metal Construction (Steel): Not cosmetic — the steel frame is the structural reason this cabinet holds 1704 kg and maintains square geometry across thermal cycles. Aluminum-framed budget alternatives distort over time under load, which misaligns slide-rail servers and makes cable management a recurring headache.
• UL 60950 Certified: UL 60950 is the ITE (Information Technology Equipment) safety standard. This certification is a procurement requirement for data centers, enterprise IT, and most government and healthcare facilities — it confirms the enclosure meets fire, electrical, and structural safety criteria under an accredited third-party test program.
• RoHS Compliant: Restriction of Hazardous Substances compliance is required for institutional purchasing, European import, and many state-level procurement contracts. Specifying RoHS-compliant infrastructure avoids disposal surcharges and keeps procurement teams out of compliance reviews.
• Side Panels Included: The enclosure ships with sides installed, providing cable containment, structural rigidity, and access control from the cabinet perimeter — relevant for open-floor deployments or anywhere you can't rely on a locked room for physical security.

Integration & Compatibility

The AR3157SP follows the EIA 19-inch standard, making it compatible with virtually all rackmount IT and security hardware: network video recorders, managed PoE switches, fiber and copper patch panels, 1U/2U servers, rackmount UPS units, and KVM drawers. APC's NetShelter SX accessory ecosystem — vertical PDUs, horizontal cable managers, blanking panels, cage nut kits, and mounting rail extensions — is designed specifically for this enclosure family, so accessory sourcing is straightforward.

For physical security head-end rooms, the 1070mm depth is particularly relevant when pairing with deep-chassis NVR appliances or high-density storage arrays. Verify your heaviest chassis dimensions before finalizing rail kit selection — most slide rails for this depth tier are sold separately and require front-to-rear measurement confirmation. Browse the full APC by Schneider Electric catalog for compatible accessories, PDUs, and UPS systems designed for this enclosure family.

If you're planning a PoE-heavy camera deployment feeding into this head-end, review our PoE switch selection to size switch capacity alongside the AR3157SP's load floor plan. Properly sized vertical PDUs and blanking panel kits keep airflow predictable and simplify future adds.

Frequently Asked Questions

Q: What is the usable rack space in the AR3157SP?

A: The AR3157SP provides 48U of usable rack space within a total cabinet height of 2258mm (approximately 88.9 inches). This accommodates up to 48 standard 1U rackmount devices, or a mixed population of 1U, 2U, and deeper chassis.

Q: What is the maximum weight capacity of the AR3157SP?

A: The AR3157SP is rated for a maximum static load of 1704 kg (approximately 3,756 lbs). This is a structural rating for the cabinet frame — typical physical security or IT deployments rarely approach this limit in practice.

Q: Is the AR3157SP compatible with standard 19-inch rackmount equipment?

A: Yes. The AR3157SP conforms to the EIA 19-inch (48.3 cm) rack mounting standard, which is universal across IT, networking, and physical security hardware including NVRs, PoE switches, UPS units, patch panels, and servers.

Q: What certifications does the AR3157SP carry?

A: The AR3157SP is UL 60950 certified (ITE safety standard), RoHS compliant, and carries PEP and EOLI environmental certifications. UL 60950 is a common procurement requirement for data center, healthcare, and government environments.

Q: Does the AR3157SP ship with side panels installed?

A: Yes. The AR3157SP ships as an enclosure with sides — providing perimeter cable containment, structural rigidity, and physical access control out of the box.

Q: What is the interior depth of the AR3157SP, and will it fit deep-chassis servers or NVRs?

A: The AR3157SP has an interior depth of 1070mm. Most enterprise NVRs and 2U servers fall in the 600–900mm depth range, so 1070mm provides genuine clearance for rear cabling and port accessibility without requiring depth-extension kits.

James Everett

The AR3157SP is the cabinet I recommend when integrators are building out a physical security head-end and don't want to revisit the infrastructure decision six months later. The 1070mm interior depth is the spec that actually drives the recommendation — a lot of 48U cabinets in this price tier are 800mm or 900mm deep, and that becomes a real problem the moment you install a deep-chassis NVR cluster or a large rackmount UPS behind a dense switch stack. With 1070mm you're not compromising rear cable access.

Technical Highlights:

• 1704 kg Structural Load Rating: At over 3,750 lbs, the frame will never be a limiting factor. Even a fully loaded UPS-plus-server-plus-switch deployment doesn't come close — which means you're planning around power and thermal, not cabinet capacity.
• 750mm Cabinet Width: The 150mm premium over a standard 600mm cabinet is used well here — side cable managers and vertical PDUs fit without fighting for space with active equipment, which directly reduces installation time on dense deployments.
• UL 60950 + RoHS Certification Stack: These aren't optional in healthcare, government, or financial verticals. Having UL 60950 on the enclosure itself (not just the gear inside it) satisfies physical infrastructure audit requirements that a non-certified cabinet cannot.

Deployment Considerations:

• At 283.5 kg shipping weight, confirm floor load capacity and freight logistics before delivery — this is not a one-person install, and many older IDF rooms have floor load limits that need to be checked against the populated cabinet weight, not just the empty enclosure.
• The AR3157SP ships with sides but slide rails, blanking panels, PDUs, and cable managers are sold separately — budget and lead-time these accessories at the same time as the cabinet, or your install date slips waiting on hardware that should have been on the same PO.

The AR3157SP is the right call for physical security command centers, structured IDF buildouts, and any deployment where a 48U deep cabinet needs to carry a mixed NVR/UPS/switching load without a revisit to the infrastructure layer inside a 3-year horizon.