A fiber optic distribution box is used in the FTTH network. It protects the connection of fiber cable and pigtails in FTTH and makes the fiber cable access point stable, dust-proof, waterproof, and anti-aging. This article provides some knowledge about fiber optic distribution boxes.

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A fiber optic distribution box is used in the FTTH network. It protects the connection of fiber cable and
pigtails in FTTH and makes the fiber cable access point stable, dust-proof, waterproof, and anti-aging.
This article provides some knowledge about fiber optic distribution boxes.
What is a Fiber Optic Distribution Box?
A fiber optic distribution box is used as a termination point for the feeder cable to connect with
the drop cable in the FTTx network system. The fiber splicing, splitting, and distribution can be
done in this box. In addition, it provides solid protection and management for the FTTx networks.

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Internal Structure of a Fiber Optic Distribution Box
The function of the fiber optic distribution box is mainly to protect and split the fiber. Then its
structure is divided into four parts:
1. Cable Inlet: This interface is used for external optical cable access. The inserted optical cable
plays a fastening role at the access port and is not easy to loosen. And the cable inlet is under the
fiber optic distribution box, which has a better waterproof effect.
2. Splice Tray: The external optical cable should be spliced together with the splitter or the end of
the pigtail in the fiber optic distribution box; a splice tray is essential, which is convenient for
splice and improves the success rate of a splice.
3. Fiber Splitter Disks: Some fiber splitter disks can be found in some versions, and a few are not
because this only acts as a fixture and makes it more convenient and compact when installing
splitters and pigtails. It is possible to observe several shapes of this fiber supply menu and
combine splice trays in various fiber management boxes. Besides, the function is the same, and it's
only the result of continuous improvement to generate fiber fusion and cabling more suitable for
technical applications.
4. Outlet: The number of outlets can determine the basic model of a fiber optic distribution box.
For example, with 8 outlets, it is an 8-core distribution box, and the outlet is much smaller than the

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inlet port.
Types of Fiber Optic Distribution Box
According to the capacity, the fiber optic distribution box can be 1/2/4/ 6 /8 /12/16/ 24/32/48
core, etc. According to the installation method, the fiber optic distribution box can be
wall-mounted or pole-mounted. According to the application scenarios, it can be indoor and
outdoor. According to function, it can be a regular fiber optic distribution box and fiber optic
distribution box with a fiber splicing function.

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Features and Benefits
A fiber optic distribution box provides the following features and benefits:
 Support mid-span (straight through), splitting, and branching
 High-strength PC+ABS material, moisture-proof, water-proof and anti-aging
 Protection rating IP65
 Wall or pole mounting, indoor or outdoor application
 SC adapter panel, fast connector applicable

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 Suitable for insert type or blockless type PLC splitter
 Standard size, lightweight, easy installation, and operation
Applications
A fiber optic distribution box is used in FTTH access networks, telecommunication networks, CATV
networks, local area networks (LAN), wide area networks (WAN), data communications networks,
etc.
Conclusion
A fiber optic distribution box is multi-purpose wiring equipment. It provides flexibility, easy
installation, and easy operation. Sun Telecom specializes in providing one-stop total fiber optic
solutions for all fiber optic application industries worldwide. Contact us if any needs.