36 Core Optic Splice Joint Closure

Outdoor optical distribution networks require sealed environmental protection to safeguard bare fiber joints against moisture, soil contaminants, and mechanical stress. The 36 core horizontal fiber optic splice closure provides a sealed housing designed to distribute, splice, and store outdoor optical cables entering and exiting from both ends of the unit. Engineered with an in-line body profile, this enclosure accommodates straight-through direct connections as well as branching connections. The closure supports deployment across outdoor environments, including overhead aerial lines, underground pipeline manholes, and direct-buried installations.

Key Features

• Housing Material: Molded engineering PP plastic casing provides resistance to acid, alkaline salt erosion, aging, and environmental degradation.

• Environmental Ingress Protection: IP68-rated mechanical structure withstands outdoor climates, temperature swings, and harsh operating conditions.

• Splice Tray Management: Turnable, booklet-style splice trays swing open independently, allowing fiber routing and maintenance without disturbing adjacent splices.

• Bend Radius Protection: Internal routing channels maintain an optical fiber bending radius of 40 mm, preventing macrobending attenuation loss.

• Sealing System: High-elasticity internal rubber seal rings and sealing strips provide continuous moisture-tight and dust-tight performance.

• Cable Port Configuration: In-line 2-in / 2-out design permits independent securing and sealing for up to four optical cables.

Product Configuration

• Splice Trays: 3 hinged splice trays, each accommodating up to 12 fusion splices (36 fibers total capacity).

• Port Layout: 4 total cable ports configured as 2 entries on one end and 2 exits on the opposing end.

• Standard Accessories Included:

  • Metal spanner: 1 piece

  • Metal hanger: 2 pieces

  • Sealing rubber strip: 1 piece

  • Insulating tape: 1 piece

  • Plastic plug: 4 pieces

  • Rubber waterproof strip: 2 pieces

  • Cable tie (3 mm x 110 mm): 8 pieces

  • Heat-shrink protection sleeve (1.2 mm x 60 mm): 96 pieces

Applications

• Aerial Deployments: Suspended on strand messenger wires or mounted to utility poles using supplied metal hangers.

• Duct and Pipeline Installations: Placed inside underground communications ducts and utility manholes.

• Direct-Buried Deployments: Buried directly into soil trenches where soil pressure and moisture resistance are necessary.

• Branching and Direct Splices: Protecting straight-through trunk cables or routing breakout distribution fibers.

Selection Considerations for Horizontal Closures

Network planners evaluating splice enclosures should verify specific engineering parameters:

• Cable Diameter and Port Fit: Ensure field trunk and distribution cable outer diameters do not exceed the 17.5 mm port capacity.

• Splice Methodology: Standard trays are configured for single-core heat-shrink fusion protection sleeves (60 mm length). Ribbon fiber or mechanical splices may decrease usable tray capacity.

• Environmental Demands: Underground and buried links demand rigorous perimeter sealing (IP68) to prevent hydrostatic pressure leakage.

• Hardware Requirements: Confirm whether mounting brackets match strand wire suspension or pole attachment hardware.

Frequently Asked Questions

What is the maximum cable outer diameter supported by this enclosure?

The cable ports accommodate outdoor fiber cables with an outer diameter up to 17.5 mm.

Can this unit be installed in direct-buried applications?

Yes. The PP plastic structure and IP68 mechanical seal protect splices against soil load, groundwater penetration, and chemical corrosion in direct-buried environments.

What size heat-shrink protection sleeves fit the internal trays?

The included accessories supply 1.2 mm x 60 mm heat-shrink sleeves, which fit the internal single-fiber splice slots.

How does the internal tray design protect optical transmission performance?

The turnable booklet trays support a 40 mm bending radius, preventing macrobending loss and allowing technicians to service individual fibers without disturbing active adjacent circuits.

The 36 core horizontal fiber optic splice closure provides a compact, IP68-rated protective boundary for outdoor distribution points. With a capacity of up to 36 fusion splices across 3 hinged trays and support for 4 separate cable entries, this mechanical enclosure delivers stable optical joint protection for aerial, duct, and direct-buried plant architectures.