Bosch Conduit back box 123mm - NDA-U-CBBS

Bosch NDA-U-CBBS Conduit Back Box, 123mm Surface-Mount Housing

Overview

The Bosch NDA-U-CBBS is a 123mm conduit back box designed for surface-mounted camera installations where you need to route conduit directly into the camera base — cleanly, securely, and without exposing wiring. At 5.7 in × 2.9 in (145 mm × 74 mm) and 1.74 lb, it provides a rigid intermediate housing between the building structure and the camera head, accommodating in-wall or surface conduit runs that would otherwise leave cables exposed or require an additional junction box. This is a purpose-built component for the Bosch Security camera line, not a generic electrical box, and the fit and finish reflect that — RAL 9003 signal white polycarbonate cover ring against an aluminum back box body means it will match Bosch dome and surface-mount camera housings without standing out as an afterthought.

Key Features

• Aluminum back box construction: The primary housing is aluminum, not plastic — that matters on any surface-mounted install subject to physical contact, tool impacts, or opportunistic tampering. Aluminum dissipates heat better than ABS or polycarbonate, keeps the housing dimensionally stable across temperature cycles, and resists deformation if the conduit fitting is torqued during installation.
• IK10 impact rating: IK10 is the highest standardized impact protection class — rated to withstand 20 joules of direct impact energy. For a surface-mount back box in a corridor, stairwell, parking structure, or warehouse, IK10 means the enclosure survives a deliberate strike or accidental cart/equipment collision without cracking or deforming. This is the spec that separates a commercial-grade housing from a residential-grade one.
• Polycarbonate cover ring (RAL 9003 Signal White): The trim ring is polycarbonate — impact-resistant and UV-stable in most indoor applications. RAL 9003 is a specific, reproducible white that matches standard Bosch camera colorways, so the completed install looks intentional rather than mismatched. If your cameras are white, this back box will align visually without painting or special ordering.
• Salt mist tested to IEC 60068-2-52: Salt mist exposure testing confirms the housing materials and any surface treatments resist corrosion from chloride-laden air. This is relevant in coastal installations, food-processing environments with saline washdown, or parking structures where road salt is tracked in and becomes airborne. Most back boxes skip this test — having it documented means you can specify this component in those environments with confidence.
• Vibration tested to IEC 60068-2-6: Sinusoidal vibration testing per IEC 60068-2-6 means the back box has been validated against continuous vibration profiles — relevant in manufacturing floors, transportation hubs, or any structure with HVAC equipment or mechanical systems mounted nearby. Vibration loosens fasteners and fatigues plastic clips over time; aluminum construction and tested vibration resistance reduce that maintenance risk.
• Shock tested to IEC 60068-2-27: Mechanical shock testing validates survivability under single high-energy impact events — door slams, building settling, shipping drops, or installation impacts. Combined with the IK10 rating, this gives you two independent validated data points on physical durability rather than a single marketing claim.
• Surface-mount configuration: The NDA-U-CBBS mounts directly to a flat surface — wall or ceiling — with conduit entering from the back or sides. This simplifies rough-in on new construction (no recess required) and makes retrofit installations on concrete or CMU walls straightforward. Paired with the appropriate Bosch camera mounting accessories, conduit entry and cable management are handled at this stage before the camera head is ever attached.
• Compact form factor (145 mm × 74 mm): At just under 6 inches in diameter, the NDA-U-CBBS does not create a large wall protrusion. That matters in finished interior spaces — conference rooms, hotel lobbies, retail environments — where a massive back box would look institutional. The profile is proportional to the camera heads it supports.

Integration & Compatibility

The NDA-U-CBBS is designed for integration into surface-mount camera installations within the Bosch Security ecosystem. The 123mm footprint and conduit back box form factor are intended to pair with compatible Bosch camera series that accept conduit entry — verify the camera model's mounting adapter compatibility before specifying. The white RAL 9003 finish aligns with standard Bosch indoor/outdoor camera colorways. For installations requiring a different finish, surface painting is possible on the aluminum body; the polycarbonate cover ring may require primer for paint adhesion. Conduit sizing and entry knockout configuration should be confirmed against your specific conduit run before rough-in — the aluminum body accommodates standard conduit fittings, but hub sizes and knockout positions are installation-specific. The IEC-validated environmental ratings (salt mist, vibration, shock) make this back box suitable for industrial and semi-industrial environments, not just typical commercial interiors, broadening its applicable deployment range beyond standard office or retail installs.

Frequently Asked Questions

Q: What is the NDA-U-CBBS made of?

A: The conduit back box body is aluminum and the cover ring is polycarbonate (RAL 9003 Signal White). Aluminum provides structural rigidity and impact resistance; the polycarbonate ring provides a color-matched trim finish.

Q: What impact rating does the NDA-U-CBBS carry?

A: The NDA-U-CBBS is IK10 rated — the highest standardized impact class, validated to withstand 20 joules of direct impact. This makes it suitable for high-risk locations including stairwells, parking structures, and corridors subject to physical contact or tampering attempts.

Q: What are the dimensions and weight of the NDA-U-CBBS?

A: The back box measures 145 mm × 74 mm (5.7 in × 2.9 in) and weighs 787 g (1.74 lb). The compact footprint keeps wall protrusion minimal in finished interior spaces.

Q: Is the NDA-U-CBBS suitable for coastal or high-humidity environments?

A: Yes — the NDA-U-CBBS has been salt mist tested to IEC 60068-2-52, confirming corrosion resistance in chloride-laden environments such as coastal buildings, food processing facilities, or parking structures with road salt exposure.

Q: How is the NDA-U-CBBS mounted?

A: The NDA-U-CBBS is surface-mounted — it attaches directly to a flat wall or ceiling surface with conduit entering from the rear or sides. No recess or in-wall cavity is required, making it suitable for both new construction and retrofit installations on concrete or masonry.

Q: Has the NDA-U-CBBS been tested for vibration and shock resistance?

A: Yes. The housing is tested to IEC 60068-2-6 (sinusoidal vibration) and IEC 60068-2-27 (mechanical shock), making it appropriate for installations near HVAC equipment, mechanical systems, or in manufacturing and transportation environments where continuous vibration is a factor.

Eden Phillips

The NDA-U-CBBS is the kind of component that gets specified once and forgotten — until it isn't. The IK10 aluminum body is what separates a back box that stays intact in a stairwell or parking structure from one that cracks the first time a cart clips it. I've seen plenty of installs where everything from the camera to the NVR was specified carefully and the back box was treated as a commodity item — that's how you end up with a polycarbonate shell that's cracked open six months after commissioning, leaving cable slack exposed and the warranty argument going nowhere.

Technical Highlights:

• IK10 impact resistance: 20-joule validated impact rating means the aluminum housing survives high-traffic and high-risk locations — not just a marketing designation but a tested value per IEC standards.
• Tri-axis environmental testing: Salt mist (IEC 60068-2-52), vibration (IEC 60068-2-6), and shock (IEC 60068-2-27) are all independently validated — this is a complete environmental qualification, not a single IP-rating checkbox.
• Compact 145 mm × 74 mm footprint: At 5.7 in across, the NDA-U-CBBS keeps wall protrusion proportional to the camera head — relevant when specifying for finished lobbies, retail floors, or any space where an oversized junction box would look out of place.

Deployment Considerations:

• Confirm conduit knockout sizing and entry position against your specific conduit run before rough-in — the aluminum body accommodates standard conduit fittings, but hub size and entry orientation need to match your installation design before the box goes on the wall.
• The polycarbonate cover ring is RAL 9003 Signal White — if the camera head is a different finish or if the install environment requires a custom color, budget for painting the aluminum body separately; the polycarbonate ring will need primer before paint will adhere reliably.

This back box earns its place on a spec sheet for industrial, coastal, or high-traffic commercial installs — manufacturing floors, transit facilities, parking structures, and food-service environments where the IEC-validated salt mist and vibration ratings aren't just nice-to-have but address a real service-life risk.