The APC AR3357B2X609 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. It provides 48U of EIA-310 mounting space in a 750 mm wide, 1200 mm deep frame that stands 2258 mm tall, a depth that comfortably houses modern long-chassis servers and storage with room left for rear cabling and PDUs. The extra width provides space for side-mounted cable management and better airflow separation.

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 286 mm to 1048 mm deep. 4 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.

Supplied without side panels, this variant is intended for bayed rows where neighbouring racks share walls; it keeps the 80% perforated curved front door and the perforated rear doors with 3-point locking. Baying hardware is included.

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