APC by Schneider Electric AR8105BLK 2U Fixed Rack Shelf
Overview
The APC by Schneider Electric AR8105BLK is a 2U fixed rack shelf rated to 50 lbs (22.7 kg) — a purpose-built platform for housing non-rack-native equipment in standard 19-inch enclosures. Whether you're staging a surveillance DVR that shipped without rack ears, resting a PoE injector in a wiring closet, or supporting a small appliance in a network rack, the AR8105BLK gives you a stable, metal-framed surface without the complexity of adjustable-depth designs. The shelf ships in black to match most APC by Schneider Electric rack enclosures and open-frame infrastructure.
At 483 mm wide, this shelf fills a standard 19-inch rack bay cleanly. The fixed-depth design — 406 mm (40.6 cm) usable — handles most compact appliances, managed switches, and standalone devices that don't natively mount to a rack. If your deployment includes rack-mounted equipment that needs a staging surface or a permanent shelf for non-racking gear, the AR8105BLK belongs in your rack accessories plan from the start.
Key Features
- 50 lb / 22.7 kg Static Load Capacity: Rated for half a standard rack unit's worth of real equipment weight — enough for a compact NVR, a UPS battery module, or multiple patch panels staged temporarily. That figure matters when teams are pressured to shelf-mount a 40 lb device and assume any shelf will do. This one has a published limit; stay under it.
- 2U Rack Height (89 mm): Occupies two rack units vertically, which is standard for fixed shelves of this depth. You get enough clearance above and below for cable routing and ventilation — critical if anything warm sits on or adjacent to this shelf.
- 483 mm Width — Standard 19-Inch Form Factor: Fits any EIA-310-compliant rack without adapter rails or custom hardware. That means it drops into network racks and server enclosures from APC, Tripp Lite, Middle Atlantic, and most other manufacturers without fitment questions.
- 406 mm (40.6 cm) Fixed Depth: Deep enough for compact appliances, small UPS units, wireless APs temporarily staged for configuration, or security appliances awaiting permanent mounting. Not configurable — if your equipment runs deeper than 406 mm, measure before ordering.
- All-Metal Construction: Steel housing versus plastic composite shelves means less flex under load and better long-term dimensional stability. In vibration-prone environments (server rooms with HVAC, industrial closets with HVAC/fans), metal maintains its shape where plastic can creep over time.
- REACH Certification: Compliant with EU REACH substance regulations — relevant for deployments in regulated industries or EU-based installations where material compliance documentation is part of procurement. Not a safety certification, but a materials-traceability credential.
- Fixed (Non-Adjustable) Design: No sliding mechanism means no failure mode from an unlocked depth adjustment. The shelf is either in the rack or it isn't — no intermediate positions to drift. Simpler, fewer parts, nothing to knock loose during maintenance.
- No Wall Mount, No Casters: The AR8105BLK is a rack-only solution. If your installation requires a wall-mounted shelf or a mobile cart shelf, this is the wrong product — confirm your rack mount points before ordering.
Integration & Compatibility
The AR8105BLK integrates into any standard 19-inch, EIA-310-compliant rack enclosure with standard square-hole, round-hole, or threaded (M6/10-32) mounting rails. The 483 mm width is consistent with the rack standard; verify your enclosure's rail type before ordering mounting hardware, as the shelf itself requires appropriate cage nuts or screws depending on rail type.
This shelf is a passive support surface — it introduces no electrical connections, no data paths, and no power requirements. Anything placed on it draws power from its own supply or a separate rack PDU. Plan your power distribution independently of shelf placement. Cable management above and below the 2U footprint should be factored into your rack layout — two rack units is modest vertical space and adjacent equipment may need airflow clearance if thermal output is a concern.
The fixed mounting depth (min and max both listed at 1.6 cm for the mounting bracket itself) means the shelf will mount flush to standard rail sets. Confirm your rack's internal usable depth accommodates the 40.6 cm shelf depth plus any overhang from equipment that extends beyond the shelf face.
Frequently Asked Questions
Q: What is the maximum weight the AR8105BLK can support?
A: The AR8105BLK is rated for a static load of 50 lbs (22.7 kg). Do not exceed this rating — permanently loaded shelves near the limit should be evaluated for dynamic conditions (vibration, seismic zone requirements) separately.
Q: Will the AR8105BLK fit my existing 19-inch rack?
A: Yes, provided your rack is EIA-310-compliant with standard 19-inch (483 mm) rail spacing. The shelf is 483 mm wide and designed for standard rack enclosures. Verify your rail type (square hole, round hole, or threaded) to ensure you have the correct cage nuts or screws for mounting.
Q: Can the AR8105BLK be wall-mounted?
A: No. The AR8105BLK is a rack-mount-only shelf. It does not include wall-mount hardware and is not rated or designed for wall installation.
Q: How much rack space does the AR8105BLK consume?
A: The shelf occupies 2U (two rack units, or 89 mm of vertical space) in your enclosure.
Q: Is the AR8105BLK REACH compliant?
A: Yes, the AR8105BLK carries REACH certification, indicating compliance with EU regulations on restricted chemical substances in materials. This is a materials-compliance credential, not an electrical or structural safety certification.
Q: What is the usable shelf depth of the AR8105BLK?
A: The maximum depth is 40.6 cm (406 mm). Equipment deeper than this will overhang the shelf face — factor this into your rack layout and cable management plan.
The AR8105BLK comes up often in rack builds where an integrator is staging a non-rack-native device — a small security appliance, a standalone DVR, or a PoE injector — and needs a clean, permanent home inside an enclosure rather than a zip-tied shelf improvisation. The 50 lb static rating and all-metal construction are the two specs I check first, because undersized or plastic shelves under sustained load in a vibration environment are a maintenance call waiting to happen.
Technical Highlights:
- 50 lb (22.7 kg) Static Load Rating: Sufficient for most compact security appliances and network devices. It's a published, testable spec — not a manufacturer estimate — which matters when you're signing off on a rack build for a client.
- 2U / 89 mm Height: Two rack units gives you cable routing clearance above and below the shelf. In dense racks, that breathing room is not trivial — a 1U shelf can force cable management compromises that create problems during maintenance.
- 483 mm Width / 40.6 cm Depth: Covers the EIA-310 standard rack width exactly, and the 406 mm depth handles the majority of compact appliances you'd need to shelf-mount. Measure anything over 35 cm before committing — overhang past the shelf face can interfere with rack door closure on enclosed cabinets.
Deployment Considerations:
- Confirm your rack's rail type before ordering mounting hardware — the AR8105BLK requires cage nuts on square-hole rails or appropriate screws for threaded rails; neither is included in a basic shelf kit typically, so check your enclosure's hardware inventory first.
- The fixed depth is a hard constraint. If the equipment you're shelving extends deeper than 40.6 cm, it will overhang the front face — that's a cable management and door-clearance issue in enclosed racks. Measure twice.
This shelf fits best in wiring closet and server room builds where you need a permanent, metal-framed home for a device that shipped without rack ears — network appliances, compact NVRs, and security controllers are the typical candidates. It's not the right call for mobile carts or high-vibration industrial environments where a locking or adjustable shelf would be safer.
