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A-DQ(BN)(SR)H-CLT | Indoor/Outdoor LSZH Construction
Armored Loose Tube Fiber Optic Cable
Armored Loose Tube Fiber Optic Cable is designed for indoor/outdoor links where low fiber count, mechanical protection and low-smoke halogen-free performance matter at the same time. The A-DQ(BN)(SR)H-CLT construction combines a gel-filled central loose tube, water-blocking glass yarn, corrugated steel tape armor and an LSZH outer jacket for reliable use in campus, FTTC, FTTB, duct and harsh premises routes.
It is a compact and economical choice for access and distribution networks where the cable may be exposed to crush, moisture, rodent risk, frost or general physical damage, but the project still prefers an LSZH sheath for mixed indoor/outdoor sections.
- Fiber counts: 2, 4, 6, 8 and 12 fibers
- Protection: corrugated steel tape armor with ripcord
- Outer sheath: LSZH / HFFR single jacket
- Mechanical values: 800 / 1200 N tensile, 1000 N crush
Product overview
Armored Loose Tube Fiber Optic Cable for Low Fiber Count Routes
This armored loose tube fiber optic cable is built for projects that need more protection than a basic indoor cable, yet do not require the size and complexity of a higher-count outdoor backbone construction. The central loose tube concept keeps the fibers buffered from installation stress, while the armored build adds an extra defense layer against crush and rodent impact.
Because the design uses a single LSZH jacket over a compact armored core, it works particularly well in inter-building links, campus routes, secondary distribution and industrial pathways where indoor/outdoor transition is part of the real installation condition rather than a catalog label.
For broader cable families and related constructions, start from our Fiber Optic and Data LAN Cables category page.
Why this construction works
Why Choose This Armored Loose Tube Fiber Optic Cable?
Compact for lower fiber counts
The central loose tube format keeps the construction efficient and manageable for smaller-count links without sacrificing protection.
Mechanical protection where it counts
Corrugated steel tape armor improves crush resistance and helps protect the cable in harsher pathways and exposed route segments.
Better moisture handling
Gel-filled loose tube design and water-blocking elements support cable stability in outdoor and semi-exposed installation conditions.
LSZH jacket for mixed routes
The LSZH outer jacket suits projects that want lower smoke and halogen content in building sections while still keeping outdoor-capable construction logic.
UV and stress-crack resistance
The outer sheath is intended for tough field conditions where durability matters alongside fire-conscious material selection.
Practical for access and distribution
This cable fits campus, FTTC, FTTB, outside plant and inter-building network sections where low fiber count meets real mechanical risk.
Cable construction
Construction of the Armored Loose Tube Fiber Optic Cable
Gel-filled central loose tube core
Optical fibers are housed in a central loose tube with gel filling, helping isolate the fibers from water ingress and installation stress.
Water-blocking strength layer
Water-blocking glass yarn adds tensile contribution and reinforces the cable for route conditions where long-term stability matters.
Corrugated steel tape armor
The metallic armor layer adds crush and rodent protection, and the ripcord supports easier outer layer opening during preparation.
LSZH / HFFR outer jacket
The single outer jacket balances mechanical durability with low smoke, zero halogen expectations for mixed indoor/outdoor installations.
If your project needs a metal-free alternative, compare this design with our
non-metallic armored fiber optic cable
or the
CLT non-metallic armored SJ cable.
Technical data
Technical Specifications
| Fiber count options | 2 / 4 / 6 / 8 / 12 |
|---|---|
| Loose tube diameter | 2.8 mm |
| Loose tube jacket | PBT |
| Strength members | Water blocking glass yarn |
| Armor | Corrugated steel tape armored |
| Outer jacket | LSZH / HFFR |
| Approx. outer diameter | 7.5 mm |
| Weight | 90 kg/km |
| Tensile load (perm./inst.) | 800 / 1200 N |
| Crush resistance | 1000 N |
| Operating temperature | -30 °C to +70 °C |
| Minimum bending radius | 20 x outer diameter |
| Optical option | Wavelength | Max attenuation |
|---|---|---|
| 9/125 G.652.D singlemode | 1310 / 1550 nm | 0.36 / 0.22 dB/km |
| 50/125 OM2 multimode | 850 / 1300 nm | 3.0 / 1.0 dB/km |
| 50/125 OM3 multimode | 850 / 1300 nm | 2.8 / 0.8 dB/km |
| 50/125 OM4 multimode | 850 / 1300 nm | 2.7 / 0.7 dB/km |
Available options mentioned for this construction include sheath color alternatives, increased pulling strength with aramid or glass yarn, and alternative jacket preferences such as LSZH or L-M-HDPE depending on project need.
Selection guide
How to Select the Right Armored Loose Tube Fiber Optic Cable
- Define the route first. Check whether the installation includes ducts, conduits, inter-building transitions, campus pathways, direct burial sections or harsh premises where extra mechanical protection is required.
- Confirm fiber count and fiber type. Choose the required count from 2 to 12 fibers, then match the optical requirement to singlemode G.652.D or multimode OM2, OM3 or OM4.
- Review fire and jacket expectations. If the project includes occupied building sections or indoor/outdoor transition, the LSZH version is usually the better fit. For other route priorities, compare alternative sheath options.
- Validate mechanical needs before ordering. Confirm pulling load, crush exposure, rodent risk, termination approach and whether you need added strength members or a different outer sheath preference.
Where it fits best
Typical Applications for Armored Loose Tube Fiber Optic Cable
Recommended installation environments
- Inter-building voice and data communication networks
- FTTC and FTTB cabling
- Outside plant routes
- Duct and conduit installation
- Campus cabling and secondary distribution
- LAN and WAN backbone sections
- Telecommunication trunk systems
- Distribution box, frame and panel interconnections
- Harsh premises where heavy-duty protection is expected
- Directly buried underground routes where project design allows
Best-fit project profile
This design is especially useful when the route is not purely indoor, the fiber count is modest, and the cable must tolerate real-world handling rather than only clean cabinet-room conditions. It is a practical choice for access network sections, plant environments, mixed indoor/outdoor links and distribution routes where compact size still needs serious protection.
For higher-count armored constructions, review the multi loose tube alternatives below.
Compliance and references
Compliance and Reference Standards
The current product information references IEC 60754-1, IEC 61034-1 & 2, IEC 60332-1 and IEC 60794-1 & 2. For official background on the most relevant standard families and fiber reference, you can review the following sources:
- ITU-T G.652 for the singlemode fiber reference used in G.652.D constructions
- IEC 60754-1 for halogen acid gas test overview
- IEC 61034-1 and IEC 61034-2 for smoke density testing under defined conditions
- IEC 60332-1-2 for single cable vertical flame propagation procedure
Frequently asked questions
Armored Loose Tube Fiber Optic Cable FAQ
What does armored loose tube mean in this cable design?
It means the optical fibers are placed in a central loose tube and protected by a corrugated steel tape armor layer under the outer jacket. This combination improves resistance to crush, rodent impact and route-related mechanical stress.
Is this cable suitable for indoor/outdoor use?
Yes. This construction is positioned for indoor/outdoor applications, especially where a project wants a compact armored design with an LSZH outer jacket for mixed route conditions.
Which fiber counts and fiber types are available?
The construction is available in 2, 4, 6, 8 and 12 fiber versions, with G.652.D singlemode and OM2, OM3 or OM4 multimode options depending on project requirement.
When should I choose this cable instead of a multi loose tube armored cable?
Choose this design when the required fiber count is lower and you want a compact central loose tube construction. If the project needs a broader capacity range or a different sheath approach, a multi loose tube armored cable may be more suitable.
Can this cable be customized?
Yes. The current product information notes options such as sheath color alternatives, increased pulling strength and alternative sheath preferences depending on project specification.
Project support
Need the Right Configuration for Your Route?
Share the required fiber count, fiber type, installation environment, jacket preference and any special mechanical requirement. That makes it much easier to confirm whether this armored loose tube fiber optic cable is the right fit or whether a non-metallic or multi loose tube alternative would serve the project better.