APC by Schneider Electric AR3100 42U NetShelter SX Free-Standing Rack Enclosure
Overview
The AR3100 is APC by Schneider Electric's NetShelter SX 42U rack enclosure built for data center and server room deployments where airflow management, structural integrity, and cable organization are non-negotiable. At 600mm wide and 1070mm deep, this free-standing steel cabinet gives you enough real estate to house dense 1U/2U servers, patch panels, and switching gear without forcing compromises on cable routing or equipment access. If you're building out a new equipment room or refreshing aging open-frame racks, the AR3100 is the structured foundation that supports it.
Internal links: explore the full APC by Schneider Electric catalog or browse our selection of server rack enclosures. For planning your rack layout, see our network infrastructure guide. Pair this enclosure with rack PDUs to complete your power distribution setup.
Key Features
- 42U Capacity: 42 rack units gives you room to fully populate a standard server stack — switches, patch panels, 1U/2U servers — without stacking enclosures or splitting gear across cabinets. That's meaningful for consolidating infrastructure in a single footprint.
- 600mm Width, 1070mm Depth: The 600mm width accommodates standard 19-inch equipment with room for vertical cable managers. The 1070mm depth handles full-depth servers and blade chassis without the rear door fighting cable bundles — critical when deploying 2U compute or storage nodes.
- Perforated Front and Rear Doors: Front-to-rear airflow design relies on door perforation to let cool air in and exhaust out without restriction. This matters when rack density is high — blocked airflow on even one side spikes inlet temps and triggers thermal throttling on processors.
- 19-Inch Square-Punched Rails: Square-punched mounting rails accept cage nuts and standard server mounting hardware universally. No proprietary rail kits needed for most enterprise server and networking brands — reduces staging time and spare-parts overhead.
- Lever Handle Lock: Keyed lever handle on the front door provides physical access control without requiring a separate lock kit. Meets basic physical security requirements for equipment rooms shared across teams.
- Steel Construction, Black Finish: Heavy-gauge steel resists racking stress under full load. The black finish is standard for data center environments and matches APC's broader NetShelter SX accessory line — blanking panels, cable managers, and PDU brackets all source from the same family.
- Free-Standing Design: No wall attachment or overhead structure required. Place it anywhere a level floor and adequate clearance allow — useful in colocation cages, lab buildouts, or equipment closets where wall mounting isn't an option.
Integration and Compatibility
The AR3100 is designed around the NetShelter SX ecosystem. APC's rack PDUs, cable managers, blanking panels, and airflow accessories mount directly without modification. The 19-inch square-punched rails accept standard cage-nut hardware, so virtually any enterprise server, network switch, or KVM from major vendors installs without adapter rails. Verify specific vendor rail kit compatibility (e.g., sliding rail kits for 1U servers) against your equipment list before deployment — some sliding rails require a minimum depth that the 1070mm interior satisfies for most configurations.
Frequently Asked Questions
Q: What is the rack unit capacity of the AR3100?
A: The AR3100 provides 42U of usable rack space, sufficient for fully populating a standard server, networking, and patch panel stack.
Q: What rail type does the AR3100 use?
A: The AR3100 uses 19-inch square-punched rails, which accept standard cage nuts and are compatible with mounting hardware from virtually all major server and networking equipment vendors.
Q: What are the external dimensions of the AR3100?
A: The AR3100 is 600mm wide and 1070mm deep. Overall height falls in the greater-than-6-to-7-foot range for a 42U enclosure. Verify exact floor footprint against your room layout before ordering.
Q: Does the AR3100 include side panels?
A: Yes, the AR3100 ships with side panels included as part of the enclosure configuration.
Q: What airflow direction does the AR3100 support?
A: The AR3100 is designed for front-to-rear airflow, consistent with standard hot-aisle/cold-aisle data center layouts. The perforated front and rear doors support this airflow path without restriction.
Q: Is the AR3100 compatible with APC NetShelter SX accessories?
A: Yes. The AR3100 is part of the NetShelter SX family and accepts APC rack PDUs, blanking panels, cable managers, and airflow accessories designed for the SX line.
The AR3100 is the enclosure I'd specify for a purpose-built equipment room where you're running a mix of full-depth compute and dense networking. The 1070mm interior depth is the spec that matters most here — it's enough to properly seat sliding rail kits for 2U servers while still leaving room for rear cable management without routing cables around the door latch.
Technical Highlights:
- 42U / 600mm Width: Enough vertical and horizontal space to run a complete rack stack — top-of-rack switch, patch panel tier, compute nodes, and PDU — without splitting across two enclosures, which cuts your per-rack cabling cost and simplifies troubleshooting.
- Front-to-Rear Airflow + Perforated Doors: Aligns with cold-aisle/hot-aisle containment strategy out of the box. If you're adding blanking panels and a containment curtain later, the AR3100 integrates cleanly — no airflow baffles to fight.
- Square-Punched 19-Inch Rails: Universal cage-nut compatibility means your HPE, Dell, Cisco, and Arista gear all mount without proprietary adapter kits. That's one less procurement line item per rack.
Deployment Considerations:
- The 1070mm depth requires adequate aisle clearance — plan for at least 1m of rear aisle access when installing in a tight equipment closet. The door swing on a fully populated rack plus cable bundle depth can surprise you in constrained spaces.
- Side panels are included, but if you're deploying in a hot-aisle containment row, you may remove them and replace with APC's row containment panels — verify those SKUs against your containment vendor before the enclosure arrives on-site.
For colocation buildouts and purpose-built server rooms running standard front-to-rear airflow, the AR3100 is the right foundation — sized correctly for full-depth gear, accessory-compatible within the NetShelter SX line, and built to stay in place under a fully loaded rack.
