The APC AR3140B2 belongs to the second generation of Schneider Electric's NetShelter SX family, the company's premium 19-inch enclosure line for data centres, server rooms and edge sites. The 750 mm width leaves generous room beside the 19-inch mounting rails for vertical cable management and patching, which makes this 42U model a natural home for core switches, patch panels and high-density copper or fibre cabling. External dimensions are 1991 mm (H) × 750 mm (W) × 1070 mm (D).

The welded steel frame is rated for 1814.4 kg static and 1020.6 kg dynamic (rolling) load, and the 19-inch EIA mounting rails adjust in 6 mm increments, accepting equipment from 299.4 mm to 819 mm deep. 2 full-height 0U accessory channels at the rear take vertical rack PDUs and cable managers without consuming rack units. The roof offers five large cable entry points (three front, two rear) and can be removed without tools.

The curved, reversible front door and the flat rear doors are 80% perforated for front-to-back airflow and swing up to 270° (180° when bayed). Split, lockable side panels and 3-point key locking secure the installation, and doors and side panels are keyed alike. Casters and levelling feet are factory-fitted, and baying hardware is included for building rows.

NetShelter SX Gen 2 enclosures are UL listed, RoHS and REACH compliant, and backed by a 5-year Schneider Electric warranty.