Aluminium Alloy Branch Off Clips for Fibre-Optic Closures

Branch Off Clips are essential mechanical components designed specifically for fibre-optic closures and splice trays. Manufactured from high-temperature resistant aluminium alloy, these clips feature a specialized coating of hot-melt adhesive available in two distinct formulations: EVA (Ethylene Vinyl Acetate) or PA (Polyamide/Nylon). This dual-option design ensures superior durability and reliability across varying environmental conditions.

Available in four standard sizes (Small, Medium, Large, and Extra Large), these orange-coloured clips serve as secure branching points for cables, allowing for easy connection and disconnection without disturbing the rest of the network. Their robust construction protects optical fibres from moisture, dust, and extreme temperatures, making them the ideal solution for outdoor and underground telecommunications infrastructure.

Key Features & Benefits

• Premium Aluminium Alloy: High-temperature resistant metal body ensures long-term structural integrity and corrosion resistance.
• Dual Adhesive Options: Available with either EVA adhesive for general sealing or PA adhesive for enhanced high-temperature and chemical resistance.
• Versatile Sizing: Four distinct sizes (S, M, L, XL) accommodate a wide range of cable diameters and closure designs.
• High Visibility: Standard orange colour allows for quick identification and inspection during maintenance.
• Non-Destructive Branching: Enables secure cable routing and splicing without compromising the main cable’s protective sheath.

Common Applications

• Fibre-optic splice closures and distribution boxes
• Outdoor and underground telecommunication networks
• Cable branching points in manholes and handholes
• FTTH (Fiber to the Home) drop cable management
• Protection of delicate optical fibres from environmental stress

Dimensions & Specifications

Size Type	Visual Reference (Click to Enlarge)	Typical Application
Small		Thin drop cables & micro-cables
Medium		Standard distribution cables
Large		Feeder cables & trunk lines
Extra Large		Heavy-duty backbone cables

Frequently Asked Questions (FAQ)

Q: What is the difference between the EVA and PA adhesive options?
A: The choice depends on your specific environmental requirements. EVA (Ethylene Vinyl Acetate) is our standard option, offering excellent flexibility, low-temperature performance, and reliable waterproof sealing for most general outdoor applications. PA (Polyamide/Nylon) provides superior resistance to high temperatures, chemicals, and solvents, making it the preferred choice for harsh industrial environments or areas with extreme thermal cycling. Please specify your preference when ordering.

Q: How do these branch off clips integrate with fibre optic splice protection?
A: The branch off clip secures the cable at the entry point of the closure, while individual fusion splices inside are protected by our Fibre Optic Splice Protection Sleeves. This two-layer protection system ensures that both the macro-routing and micro-splicing points remain safe from mechanical stress and moisture.

Q: Can these clips be used in any type of fibre optic closure?
A: Yes, they are designed to be compatible with most standard dome and horizontal closures. For optimal performance, we recommend pairing them with our dedicated Heat Shrink Tubing for Fibre Optic Closures, which provides the primary waterproof seal at the cable entry port where the branch off clip is anchored.

Q: Do I need additional wrapping for the cables exiting the branch off clip?
A: While the aluminium clip provides excellent mechanical support and the internal adhesive offers some sealing, adding an outer layer of protection is often recommended for harsh environments. Our PVC Wire Wrapping Tape can be used to overwrap the cable section immediately outside the clip, providing extra abrasion resistance and UV protection against soil movement or sharp rocks.

Q: How do I select the correct size for my cable?
A: Selection depends on the outer diameter of your cable and the specific groove design of your closure tray. Generally, ‘Small’ fits drop cables (2-5mm), ‘Medium’ fits distribution cables (6-12mm), ‘Large’ fits feeder cables (13-20mm), and ‘Extra Large’ is for heavy backbone cables (>20mm). Always verify against your closure manufacturer’s specifications before installation.

Q: Are these clips reusable?
A: Yes, the aluminium alloy construction allows for multiple installations. However, if the internal adhesive layer (whether EVA or PA) has been significantly deformed or contaminated during previous use, we recommend replacing the clip to ensure a reliable seal and proper cable retention.