Dome Joint MMJ | Medium Multi-Function Fibre Optic Splice Closure (Up to 288F Capacity)
The Medium Multi-Function Joint (MMJ) is a compact yet high-capacity dome-style fibre splice closure, ideal for splicing and managing optical fibre cables in a wide variety of deployment environments. Designed for use in Cable Chamber, Track, Spur, or Distribution joints, it provides exceptional versatility for FTTx, backbone, or access networks.
With a maximum fibre capacity of 288 fibres, this closure is engineered to deliver reliable performance in aerial, wall, pole-mounted, or underground installations.
✅ Key Specifications:
- Capacity: Up to 288 fibres (with 24 SE trays) or 192 fibres (with 24 SC trays)
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Ports:
- 4 × Circular Ports (mechanical gland entry, up to 23mm cables)
- 1 × Oval Port (heat shrink or mechanical entry)
- 2 × Emergency Circular Ports (heat shrink, up to 12mm cables)
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Splice Tray Support:
- 24 Single Element (SE) trays – 12 splices per tray
- 24 Single Circuit (SC) trays – 4 splices per storage section, 48 total trays
- Splitter Support: Accommodates up to 4 optical splitters on input manifold
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Splice Protector Compatibility:
- 1.3mm × 30mm heat shrink
- 2.2mm × 45mm heat shrink
- Crimp splice protectors
- Mounting: Vertical or horizontal pole/wall mounting bracket supplied
- Ingress Protection: IP68
- Loop Storage: Integrated basket for mid-span fibre management
- Testing: Pressure test valve included for flash testing
- Material: UV-resistant, durable plastic housing
✅ Features & Benefits:
✅ Compact closure with large internal capacity
✅ Supplied with 24 splice trays (SE or SC configuration)
✅ Tool-free re-entry for maintenance or future expansion
✅ Individual tray hinging – no disturbance to live fibres
✅ Mechanical and heat shrink sealing options for all ports
✅ Supports multiple cable diameters and configurations
✅ Integrated fibre routing manifold for neat cable organisation
✅ Optional Multi-Way Entry Glands for increased cable density
✅ Includes mounting bracket for flexible deployment
✅ Sealing glands can be pre-assembled offsite for faster installation
✅ Optional earthing and support tools available
📦 What’s Included:
- 1 × Dome Cap
- 1 × Base
- 1 × Closure Clamp
- 1 × Fibre Routing Manifold
- 2 × Tube Retainers
- 4 × Tube Retainer Covers
- 1 × Loop Storage Basket
- 1 × Pressure Test Valve
- 1 × Pole / Wall Mounting Bracket
🔧 Optional Accessories:
- 12 × SE or SC Splice Trays
- 1 × Oval Port Entry Kit
- 4 × Circular Port Entry Kits
- Multi-Way Entry Glands
- Silicone Grease
- Optical Splitters
- Emergency Port Cable Entry
- Splice Protectors
- Support Tools
The Dome Joint MMJ is a rugged, flexible, and future-ready fibre closure—perfect for high-density splicing and rapid deployment in challenging telecom environments.