48 Fibre Optic Splice Closure

The 48 Fibre Optic Splice Closure is a vertical dome-type enclosure for protecting and organizing up to 48 fiber splices in outdoor fiber optic networks. It is designed for aerial, pole, wall, duct, and underground applications, with a compact structure suitable for vertical installation and field maintenance.

The vertical dome structure separates the external sealing system from the internal fiber-management area, helping protect splices during installation and subsequent maintenance.

The internal organizer accommodates up to four 12-fiber splice trays. Each tray provides dedicated splice protection and fiber-routing paths, while the stacked arrangement allows individual trays to be accessed without redesigning the complete closure.

Fiber routing should maintain the applicable minimum bend radius of the installed fiber and prevent excessive tension, crossing, or compression around splice points. Heat-shrink splice sleeves can be secured in the designated tray holders.

The standard configuration provides 48-fiber maximum splice capacity, making the closure suitable for distribution points where fiber counts are moderate but future maintenance access is required.

Cable compatibility includes common loose-tube and central-tube outdoor fiber cables within the specified port diameter range. Ribbon-fiber configurations can also be considered when the splice tray and internal organizer are designed accordingly.

For project orders, cable construction, outside diameter, number of incoming/outgoing cables, fiber count, and required splice method should be confirmed before selecting the port and tray configuration.

The closure is designed for field installation and re-entry, with a mechanical sealing structure that avoids the need for permanent heat-shrink sealing of the main closure body.

Typical installation locations include:

• Aerial networks on poles or messenger-supported cables
• Pole and wall mounting for access-network distribution points
• Underground ducts and handholes
• Direct-burial applications when the selected configuration and installation method meet project requirements

Before installation, technicians should verify cable diameter, port arrangement, splice-tray capacity, fiber slack length, and mounting hardware. Cable strength members should be secured to the closure's designated fixation points rather than transferring mechanical load to the splice tray.

The housing is manufactured from glass-fiber-reinforced polypropylene (PP+GF) to provide mechanical strength and resistance to outdoor exposure. The mechanical compression sealing system uses gaskets around the closure and cable-entry areas to limit water and contaminant ingress.

The specified protection level is IP68, with the original configuration rated for submersion resistance to 1.5 m for 60 minutes.

For wholesale, carrier, and project-based orders, the closure can be configured according to the required network architecture and cable specification.
Available customization includes: 

Incoming material inspection for PP+GF housing, gaskets, trays, and metal hardware

Dimensional inspection of housing, cable ports, trays, and mounting interfaces

Assembly inspection for tray positioning, cable fixation, fiber-routing components, and closure fit

Sealing inspection of the closure body and cable-entry points

IP68 ingress testing according to the agreed test procedure

Mechanical tests such as impact, compression, and cable retention where required

Temperature and environmental testing for project-specific orders

Visual and functional inspection before packaging

For export projects, inspection records, material documentation, test reports, and RoHS/REACH-related compliance documents can be supplied according to the purchaser's documentation requirements.