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{"title":"1 In 4 Out Fiber Splice Enclosure 144F Vertical For FTTH FTTB","imgUrl":"https:\/\/img.chinax.com\/nimg\/61\/c6\/1e750c00dc5e284fcc637890fb85-200x200-1\/1_in_4_out_fiber_splice_enclosure_144f_vertical_for_ftth_fttb.jpg","attrs":{"Supply Ability":"1000 PCS Per 7 Days","Delivery Time":"7-15 Days","Model Number":"FOSC-400-A4","Place of Origin":"Zhejiang, China"}}
{"title":"Rubber Sealing Heat Shrink Cable Splice Enclosure Fiber Optic Splice Kit","imgUrl":"https:\/\/img.chinax.com\/nimg\/7a\/23\/ed3a3db0923e1f31faed79a105b6-200x200-1\/rubber_sealing_heat_shrink_cable_splice_enclosure_fiber_optic_splice_kit.jpg","attrs":{"Model Number":"FOSC-400-A8","Place of Origin":"Zhejiang, China","Brand Name":"DOWELL","Minimum Order Quantity":"200 pieces"}}
{"title":"5 Ports External Fibre Splice Enclosure Flame Retardant 1 In 4 Out 24F-96F","imgUrl":"https:\/\/img.chinax.com\/nimg\/d9\/8e\/d301b82338e0907cc9a5f9607914-200x200-1\/5_ports_external_fibre_splice_enclosure_flame_retardant_1_in_4_out_24f_96f.jpg","attrs":{"Payment Terms":"T\/T, Western Union, Paypal","Supply Ability":"1000 PCS Per 7 Days","Delivery Time":"7-15 Days","Model Number":"FOSC-D4C-H"}}
{"title":"Dome Fiber Optic Splice Closure PC With Easy Cable Management","imgUrl":"https:\/\/img.chinax.com\/nimg\/b8\/5c\/466b940470188be53f3c62828c8a-200x200-1\/dome_fiber_optic_splice_closure_pc_with_easy_cable_management.jpg","attrs":{"Payment Terms":"T\/T, Western Union, Paypal","Supply Ability":"100 Roll Per 7 Days","Delivery Time":"7-15 Days","Model Number":"FOSC-D6A-H"}}
{"title":"Horizontal Fiber Optic Splice Closure 2 In 2 Out Underground Wall Mounting","imgUrl":"https:\/\/img.chinax.com\/nimg\/02\/7f\/a9dfc32c613c97ddcc87200dfac3-200x200-1\/horizontal_fiber_optic_splice_closure_2_in_2_out_underground_wall_mounting.jpg","attrs":{"Payment Terms":"T\/T, Western Union, Paypal","Supply Ability":"1000 PCS Per 7 Days","Delivery Time":"7- 15 Days","Capacity":"Bunchy:12-96 cores\u3001Ribbon:72-288 cores"}}
{"title":"24 Core Fiber Optic Joint Box Horizontal Fiber Optic Splice Closure 48 Core","imgUrl":"https:\/\/img.chinax.com\/nimg\/a6\/e7\/923639e6c8d60eb39740694938b6-200x200-1\/24_core_fiber_optic_joint_box_horizontal_fiber_optic_splice_closure_48_core_underground.jpg","attrs":{"Model Number":"FOSC-H2C","Place of Origin":"Zhejiang, China","Brand Name":"DOWELL","Minimum Order Quantity":"200pieces"}}
24 Cores Waterproof Fiber Optic Splice Closure 2 In 2 Out Dome Type
A fiber optic splice enclosure is a protective housing used to organize, protect, and manage spliced fibers in telecommunications and cable TV networks. It provides a secure environment for fiber splices (both fusion and mechanical) and excess fiber storage (slack loops) at points where cables are joined, branched, or terminated.
Specifications
Type
Typical Installation
Description & Use Case
Aerial / Pole-Mount
Mounted on utility poles or strand
Sealed, dome-shaped or cylindrical closures. Common in outside plant (OSP) networks between poles.
Underground
Placed in handholes, manholes, or direct-buried
Rugged, watertight, often cylindrical "butt-style" closures for in-line splicing, or larger rectangular ones.
Indoor / Wall-Mount
Mounted on walls in buildings, data centers, or telecom rooms
Usually simpler, lighter boxes (often plastic) for patch panels or LAN backbone splices.
Key Features
Physical Protection: Shields delicate splices from moisture, dust, chemicals, and mechanical damage (crush, impact, vibration)
Environmental Sealing: Prevents water ingress, which can degrade fiber performance
Fiber Management: Organizes splice trays and slack fiber to maintain minimum bend radius and prevent micro-bends that cause signal loss
Access Point: Allows for future re-entry for maintenance, testing, or adding new splices
Installation Guidelines
Preparation: Select the right enclosure type for the environment (aerial, buried, etc.). Ensure it has adequate port capacity and splice tray capacity.
Cable Preparation: Strip cables to proper lengths, clean fibers, and secure strength members to the enclosure's strain relief points.
Routing & Bend Radius: Critical for performance. Fibers must always be routed with a bend radius larger than the minimum specified (typically 30mm for OSP fiber, 15mm for patch cords).
Sealing: Follow manufacturer's instructions meticulously for sealing cable ports and main shell. Poor sealing is the most common cause of enclosure failure.
Documentation: Update records with enclosure ID, splice map, fiber identifiers, and test results (insertion loss/IL, return loss/ORL).
Application Example
A 144-fiber feeder cable runs aerially from the central office
At a neighborhood pole, an Aerial Branching Closure is installed. Inside, 48 fibers are spliced to 2x 24-fiber distribution cables that run underground
Each underground cable runs to a Buried Pedestal Closure at a street corner
Inside the pedestal closure, fibers are branched again via splice trays into 6-fiber drop cables running to nearby homes
At the home, a final Small Drop Closure or terminal protects the splice to the pre-terminated indoor cable
