Schneider Electric NetShelter SX

NetShelter SX's Shock-Packaging SKU titles print a lower figure than the cabinet's real static rating

Schneider Electric NetShelter SX is one of 3 racks and enclosures tracked in the SecondWatt catalogue, each with specifications, lead times and indicative secondary-market pricing.

Cabinet density is what forces the cooling decision. Beyond about 40 kW a rack is no longer air-served, and the enclosure has to accommodate liquid cooling, either as rear-door and direct-to-chip manifolds or as a full immersion tank in place of the cabinet. The catalogue entries closest to that decision are GRC ICEtank Immersion Cooling and Vertiv Liebert XDU Coolant Distribution Unit.

Schneider Electric APC NetShelter SX server rack pricing, specs and pre-purchase inspection guide for data center buyers evaluating used 19-inch cabinets.

NetShelter SX is Schneider Electric's flagship 19-inch EIA-310-E enclosed server rack cabinet, sold today as two simultaneously current generations. The original line (plain numbers such as AR3100, AR3104, AR3150, AR3357 and AR3387, at 600mm or 750mm width) remains an active, "COMMERCIALIZED" product. A Gen2 line (B2-suffix numbers such as AR3387B2) extends width to 800mm and standardizes depth at 1200mm, carrying a materially higher weight rating at the top of the range. The cabinet's own installation manual defines three weight figures, not two: static load of 3,000 lb, dynamic/rolling of 2,250 lb, and a lower "shipping capacity" of 1,250 lb at 24U scaling to 2,000 lb at 48U. Schneider prints that third, lowest figure inside "Shock Packaging" (SP-suffix) SKU titles: the 48U AR3357SP title reads "...Shock Packaging, 2000 lbs...," while its true static rating, confirmed on a distributor listing, is 3,006.31 lb. Reading only the title understates true capacity by roughly a third — a sharper trap than the documented Eaton SR42UB gap, where a page and its distributor simply quoted two different figures for the same metric. Containment is priced as a row-level system, not a per-cabinet accessory: RACSC101, RACSC112 and RACSC201 list from $14,600 to $27,000, several times the $1,854-$6,999 base-cabinet range. Dell also sells a co-engineered variant under model numbers including AR3100X717 and AR3104X717 — a genuine OEM partnership, not a rebadge, which matters for parts sourcing on the refurbished channel.

Why it matters

NetShelter SX carries three weight figures, not two: static load at 3,000 lb, dynamic/rolling at 2,250 lb, and a separate "shipping capacity" at 1,250 lb (24U) scaling to 2,000 lb (48U). Schneider prints that lowest figure inside Shock-Packaging SKU titles — AR3357SP reads "2000 lbs" though its real static rating is 3,006.31 lb — so a buyer reading only the title understates true capacity by roughly a third, a sharper trap than the Eaton SR42UB's OEM-versus-distributor gap.

Who buys it

Enterprise, colocation and hyperscale operators sourcing 19-inch cabinets for new or expanding white space, plus ITAD dealers and brokers pricing decommissioned NetShelter SX units pulled from retired rows. A buyer matching into an existing row needs the exact SKU suffix — Gen1 vs. Gen2, or the shock-packaging designation — since those distinctions carry real dimensional and weight-rating differences, not cosmetic SKU variation.

Role in the data center

White-space IT cabinet housing rack-mount servers, network switches, and PDUs behind perforated front and rear doors, in enterprise server rooms, colocation suites and network closets depending on U height.

Key specifications

Technical summary

U height: 12U-52U across the SX family (24U/42U/48U most common; 12U/18U wall-adjacent units) External width: 600mm or 750mm on Gen1; 800mm on Gen2 (AR3387B2) External depth: 900mm (12U/18U); 1070mm (Gen1 standard) or 1200mm (Gen1 deep / Gen2 standard) Static rating: 3,000 lb (Gen1, 600/750mm frame) vs 4,000.07 lb (Gen2, 800mm frame, distributor-sourced) Dynamic/rolling rating: 2,250 lb (Gen1); 2,250.04 lb (Gen2) Shipping capacity, a distinct third rating: 1,250 lb at 24U, scaling to 2,000 lb at 48U Door perforation: up to 80% open area; 3-point front / 2-point split-rear latch Standards: UL 2416, UL 60950-1, EIA-310E confirmed line-wide Seismic: IBC High Seismic plus OSHPD only with the AR7701A-S bolt-down kit; UBC Zone 4 legacy Rail adjustment: 6mm (0.25in) steps, 191-935mm (600mm frame) or 292-787mm (750mm frame) Lock/key: OEM part W870-8135, shared across the SX, AV and VX lines Warranty: 60 months (5 years), repair-or-replace

Configurations and options

Door type is perforated (up to 80% open area) as the standard data-center configuration. External width runs 600mm or 750mm on the Gen1 line and 800mm on Gen2 (AR3387B2), with depth options of 900mm (12U/18U), 1070mm or 1200mm depending on SKU. Side panels ship standard on most configurations but are omitted on "without Sides" (X609-suffix) SKUs, a materially cheaper, different product from a full-sides unit at the same U height.

Compatibility and dependencies

Containment accessory SKUs RACSC101 (front), RACSC112 (full) and RACSC201 (rear) list from $14,600 to $27,000, several times the $1,854-$6,999 base-cabinet range, because they are engineered and sold as row-level, multi-cabinet systems tying a full aisle together, not a per-cabinet add-on. Anyone pricing "a NetShelter cabinet" without first establishing whether containment is bundled into that number is off by a multiple. Mounting rails use 14-gauge EIA rails on 19-inch centers, depth-adjustable in 6mm steps; the OEM caster and leveling-foot set is what sets the cabinet's 2,250 lb dynamic rating, so a swapped or missing caster set changes that figure directly.

Pricing and availability

Published price range: $550-$6,999.99 per cabinet across used (landed), refurbished and new-OEM listings observed. Trend: flat Warranty, new: 5 years (60 months), repair-or-replace, confirmed identically on the AR3104, AR3150X609, AR3003 and AR3006 OEM datasheets..

Lifecycle and maintenance

NetShelter SX carries a 5-year (60-month) OEM repair-or-replace warranty, confirmed identically across the AR3104, AR3150X609, AR3003 and AR3006 datasheets. As a welded/bolted steel enclosure with no active components beyond doors, hinges, casters and locks, it carries no OEM-stated service life or overhaul interval. The one genuinely good piece of secondary-market news: OEM replacement key part W870-8135 is shared across the SX, AV and VX lines, so a used cabinet delivered without keys is a low-cost parts order, not a locksmith call.

Common failure points

• Vertical mounting rails — Rail flanges measure outside the 191-935mm OEM adjustment range, or read asymmetrically side to side
• Leveling feet and casters — A foot seized at full extension or retraction, or a caster wheel deformed enough to make the cabinet roll off-track
• Door and side-panel hardware — The 3-point front or 2-point rear latch fails to seat on every point, or perforated door skin is cracked or missing sections
• Keys and locks — Fewer keys delivered than expected, or a non-OEM aftermarket lock swapped into a door or side panel
• Grounding and bonding strap — Missing or disconnected bonding strap between the frame and the rack ground bus
• Missing side panels or roof
• Weight-rating misreading at time of sale — A resale listing quotes only the Shock-Packaging shipping-capacity figure (1,250-2,000 lb) as if it were the cabinet's static equipment load rating

Inspection checklist

Confirm exact SKU suffix (SP, SP1, B2, X609, X717) against the nameplate — shock-packaging and Dell-badged suffixes change both price and weight-rating story, not just color. Weigh the empty cabinet on a platform scale if one is on site — OEM empty weight for a 24U AR3104 is 89.09 kg (196 lb); a heavier unit signals aftermarket steel repair. Count keys on delivery against the expected set — OEM replacement part W870-8135 fits SX, AV and VX door and side-panel locks, so fewer than 2 keys is a sub-$50 fix. Cycle the front and rear door latching handles through a full stroke — a handle that fails to seat on all 3 front or 2 rear latch points signals a dropped-shipment frame. Measure vertical mounting-rail flange spacing at top and bottom of the frame — OEM range is 191-935mm on a 600mm-wide frame, adjustable in 6mm (0.25in) steps; asymmetry means a bent post. Inspect all 4 leveling feet for thread wear and confirm each retracts and extends through full travel — a seized foot leaves the frame unsupported once casters take the load. Roll the cabinet on its casters across a flat surface and watch for drift or binding — casters rated to the 2,250 lb dynamic figure will still bind if one wheel is deformed. Verify the grounding lug and bonding strap are present, and confirm the bonding screw was torqued to 6.9 N·m (60 in-lb) at original install — a loose strap is a code issue. Check every perforated door panel for cracked or missing sections — OEM spec is up to 80% open area, and a swapped door drops that figure without changing the nameplate. Confirm side panels are physically present and count them — an X609 ('without Sides') configuration is a lower-cost product than a full-sides unit at the same U height. Ask whether a seismic bolt-down kit (AR7701A-S) is included if the site requires IBC High Seismic or OSHPD — the bare frame does not carry that rating on its own. Count cage nuts and mounting-rail hardware against the rail's full expected hole set (roughly 2 sets per U per EIA-310E) — a partial set needs a parts order first. Check the roof for its 8-slot cable-access pattern and confirm brush/grommet strips are intact — missing grommets are a common casualty of a rushed decommission. Ask in writing whether any containment hardware (RACSC101/112/201-class SKUs) is included — these are row-level systems priced from $14,600 to $27,000. Cross-check the nameplate's static, dynamic and shipping-capacity trio against the OEM datasheet for that exact model — a listing quoting only the lowest figure understates true capacity by roughly a third.