Mini Compact Type Fiber Optic Splice Closure Model: SJ-Small

Mini Fiber Optic Splice Closure is made of high-quality ABS material. Mini Fiber Optic Splice Closure is designed to offer a flexible solution for splicing and branch off fibre optic cables in all environments. There is silicone sealing gasket between the cover and bottom. Mini Fiber Optic Splice Closure in the field with all types of different cables and splicing tools, supply the warranty for a trouble free installation.

  • Model: SJ-Small
  • Dimension: 230x185x85mm
  • Max Capacity: 48 Cores (4 X 12 splice tray)
  • Cable Hole: 2 In 2 Out, 4 Ports
  • Cable Diameter: Φ2.0-Φ9.0mm
  • Sealing Structure: Silicone rubber
  • Material: PP
  • Installation: Wall mounted
  • IP Grade: 65
  • Weight: 0.6Kgs

Something about the SJ-Small fiber distribution box you need to know

Mini Fiber Optic Splice Closure is made of high-quality ABS material. Mini Fiber Optic Splice Closure is designed to offer a flexible solution for splicing and branch off fibre optic cables in all environments. There is silicone sealing gasket between the cover and bottom. Mini Fiber Optic Splice Closure in the field with all types of different cables and splicing tools, supply the warranty for a trouble free installation.

Name Fiber Cable Joint Box
Model SJ-Small
Size 230X185X85mm
Cable Hole 2 In 2 Out, 4 ports
Sealing Structure Silicon Gum material Sealing
Material PP
Max Capacity 48 Cores, 4 x 12F Tray
Cable Diameter For Φ2~Φ9mm
Installation Wall mount
Protection Grade IP65
Packing information Size: 54X55X46CM,  20 PCS/CTN, G.W.:18KGS


1.The Parts of Splice Tray
A.Splice Module with 4 Cable ties 2.4 X 92mm
B.Splice Organizer
C.Box Size:230×185×85mm L×W×D

2.Installation Procedure:

2.1 Cable Preparation

(1)Cable Sequentially through Sealing Nut, Sealing Claws, Seal and through the Closure Bottom Case, allow appropriate fiber lengths for placement within the Splice Tray.
(2)Tighten the Sealing Nut, and then proceed with stripping of fiber cable inside the Closure Bottom Case.
(3)Repeat steps(1)and(2)until cable preparation is complete.

2.2Cable Fixation

(1)Loosen the Sealing Nut,adjust cable to the appropriate length, and tighten the Sealing Nut to fix cable in place.
(2)Repeat step(1)for rest of the cable to complete this procedure.
*Caution:(1)For non-functional entrance ports, brown solid plugs provided are to be used with the sealing assembly to ensure a good seal.
(2)Solid plugs should protrude the outer edge of the Sealing Nut by 1-3mm for a complete seal.

2.3 Fiber Placement and Splicing

(1) Use Cable Ties to fix the fiber-containing PVC soft tubing onto the Splice Tray, and fix the Splice Organizer onto the Splice Tray.
(2) Place fiber within the Splice Tray, made sure fiber lengths are correct for splicing work and placement after splicing.
(3) After each individual fiber pair is spliced, place the splice joint onto the grooves of the Splice Organizer and the extra fiber on and around the Splice Tray.
(4) After all splicing work is complete, coat the grooves on Splicing Organizer with a layer of silicon gel for protection of splicing joints.

2.4 Closure Assembly
(1)After placing all splice fibers within Splice Trays, put the transparent Splice Tray Cover over the topmost Splice Tray, and use the Fixing O-Ring to fix the cover and the Splice Trays.

(2) Fix the Un-leaking O-Ring on the appropriate groove of the Closure Bottom Case, and place the Upper Closure over the bottom case, and then tighten the 8 sets of closure assembly screws to complete closure assembly.

(3)Perform a final seal tightness check for:
* Sealing Nuts on entrance ports (non-functional ports should have solid plugs in place of cable)
*8 Sets of closure assembly screws.

2.5 Opening the Closure
(1) Before opening, clean all closure surfaces.
(2) Follow procedure 2.4 in reverse order to open the closure. After necessary work is completed, follow procedure 2.4 to reassemble the closure.


CATV networks
Optical fiber communication
Fiber optic network convergence
Optical fiber access network
Widely used in FTTH access network
Telecommunication networks
Data communications networks
Local area networks
Aerial, Direct buried, underground, pipeline, hand-holes, duct mounting, wall mounting.

Fully introduction of Bwinners fiber optic distribution box

The fiber distribution box comes with splice trays and cable management for splitting incoming and outgoing cables. Made to fit a wide range of installer needs, the enclosure features exposed front and rear panels in order to allow for easy access to all areas inside.

It can splice multiple cable transmissions in one box with just minimum number of splice trays. And it also comes with combining splice trays for keeping the cables split into outgoing and incoming flows.


There are two types of fiber optic distribution box, one is wall-mounted fiber optic distribution box which is used on wall and the other is Pole mounted fiber optic distribution box.


The optical fiber cable distribution box can be made of plastic, metal or SMC All of these three material fiber optical distribution box can be found from Bwinners. You can choose the suitable one according to your requirement. Bwinners will show the material as below.

– Plastic

Normally the plastic fiber distribution box materials used are PP, ABS, ABS+PC. The differences between those materials are in the density to obtain more impact resistance, temperature and flame resistance.

ABS is also cheaper than PC and is the most used for regular environments.

ABS+PC Strong material to endure harsh environmental conditions.

PC+ABS material used ensures the body strong and light.

– Metal

This metal fiber optic distribution box comes with a durable metal construction to provide additional strength and reliability.

The metal material that is used to make the box is strong for outdoor uses, and waterproof for enhanced durability.


SMC (Glass fiber reinforced plastic) Fiber Distribution Box is lighter than the metal material box but stronger than the plastic material box, and can be molded to be different beautiful shapes. For Indoor/Outdoor application.

If you don’t sure what material is suitable for your network project, just feel free to contact us, we’d like to provide you the best solution.

Features of Distribution Box

  • High mechanical strength
  • Corrosion resistance
  • Good sealing performance
  • This enclosure is designed to house up to 24 splices or 144 fibers.
  • The distribution box can be installed on the wall or cabinet, and provides a high-density fiber optic connection.
  • Can accommodate a variety of cable connections, including terminals with sanded or non-stripped fibers.
  • Indoor fiber optic distribution box can be divided into8 cores, 12cores, 16cores, 24 cores, 48 cores specifications according to the project need.
  • Outdoor fiber optic distribution boxes are equipped with cable inlets and outlet ports, which can easily connect with the inlet and outlet cables.
  • FTTX fiber optic distribution boxes are designed with a high density of fiber optic connectors and can be used to connect multiple distribution hubs in one location, which is convenient in large-scale projects.
  • Fiber optic distribution box is widely used as fiber patching panel, fiber splicing box and fiber termination box, etc.
  • The structure of FTTX fiber optic distribution box is strong and light weight, flexible to fit different pole sizes and easy installation on site.
  • FTTX fiber optic distribution boxes come with various colors to meet customer requirements

Why Distribution Box

  • Simplify the cable management:

With fiber distribution boxes, you can expect cables to be organized without having to deal with difficult cable management issues. Simplified installation and maintenance with movable structure.

  • Pre-installed splice tray:

You don’t have to worry about having problems with the internal connections because it comes with a pre-installed splice tray.

  • Available to add extra protection:

The fiber optic box is designed to accommodate multiple fusion splice trays and splice protection sleeves. You have the option of adding on other accessories and security features so that you are able to add extra protection whenever necessary.

  • Easy installation:

The fiber optic box is designed for easy installation which means that you can finish setting up the equipment and have everything installed in a short period of time.

  • Multi-functions in one box:

The fiber optic distribution box is used in the wiring, splicing, distribution, and terminal connection of optical fiber cable. Inside with tray for splicing and easily accessible main cables. Cable connection and splicing can be carried out in the same box.


The structure of the optical fiber distribution box is mainly composed of the box body, the internal sheet metal workpiece, the optical fiber movable connector, and the spare accessories.

The structure of the fiber optic distribution box is composed of several functional units. The functional units are :

  1. Making the SC or LC fiber adapter,
  2. Connecting with optical patch cord or fiber pigtail,
  3. Connecting with mechanical patch cord,
  4. Connecting with optical drop cable or communication line


  1. Provide fixing space for optical fiber or other devices, suitable for fiber to the home (FTTH) applications;
  2. Network interconnection
  3. Resource sharing can provide users with various services such as voice, data, radio and television
  4. Fiber To The Cabinet (FTTC)
  5. Fiber To The Building (FTTB)
  6. CATV networks
  7. Optical fiber communication
  8. FTTX
  9. Fiber optic network convergence
  10. Optical fiber access network
  11. Telecommunication networks
  12. Data communications networks
  13. Local area networks

Manufacturing of fiber optic distribution box

Bwinners is a professional fiber optic distribution box manufacturing company that makes durable fiber termination box in China factory. Quality assurance, and best after service are available.

Package of fiber optic distribution box

Bwinners always packages the termination box by hard carton, if you have customized package requirements, we also support your demands based on MOQ. Contact us, and send us your requirements by email, we’d like to meet your satisfaction.