Product Features

Tight-Buffered Fiber Structure: Easy to strip, handle, and terminate.  Aramid Yarn Strength Members: 

Provides excellent tensile strength and mechanical protection.  

All-Dielectric Construction: Completely immune to electromagnetic interference (EMI).

High-Performance Outer Jacket: Flame-retardant, corrosion-resistant, water-resistant, and UV-resistant.

Telecom-Grade Fiber Cores: High quality standard ensuring fast transmission speed and low attenuation.

Compact & Lightweight: Small outer diameter and light weight for quick and flexible installation.

GJFJH Indoor Single-mode Breakout Cable: Tight-Buffered Construction

GJFJH is an indoor single-mode breakout cable in which each fibre is individually tight-buffered to 900 µm and separately reinforced, so that any leg can be connectorised and run to its own equipment without a breakout module or splice enclosure. It removes the separate fan-out hardware that loose-tube indoor cable needs, which is why it is the standard choice for backbone runs inside a building.

Construction & Materials

Each fibre is coated to 250 µm, buffered to 900 µm, then covered with a layer of aramid yarn that takes the tensile load before the leg is jacketed as a 2.0 mm subunit. The subunits are cabled together in a single flame-retardant LSZH or OFNR outer jacket. Because every leg carries its own strength member, individual fibres can be pulled, terminated and re-routed without disturbing the rest of the bundle.

Key Features

• Tight-buffered 900 µm fibre structure — easy to strip, handle and terminate
• Aramid yarn strength members provide excellent tensile and mechanical protection
• Each leg is independently reinforced, so no breakout kit is required
• LSZH flame-retardant outer jacket for indoor riser and plenum routes
• Available from 4 to 24 cores, with G.652.D or G.657.A1 fibre
• Connectorised to order with LC, SC or FC

Typical Applications

• Building backbone between the main distribution frame and floor distributors
• Data centre inter-rack and intra-rack fibre runs
• Fibre to the desk in healthcare, finance and broadcast environments
• Instrumentation racks where individual fibres feed separate terminals

Selection Notes

Choose GJFJH where individual fibres have to reach separate pieces of equipment, and choose a loose-tube indoor cable instead where the run terminates on a single panel — the breakout construction costs more per metre but saves the fan-out hardware and the labour to install it. Size the core count against your final requirement rather than your immediate one: the incremental cost of spare fibres at purchase is a fraction of the cost of pulling a second cable later. Where the route passes through a plenum space, specify the plenum-rated jacket so the cable meets local fire code without a conduit.

FAQ

What is the difference between breakout and distribution cable? In breakout cable each fibre gets its own reinforced 2.0 mm jacket so it can be handled like a patch cord; in distribution cable the fibres are tight-buffered but share one jacket and need a fan-out kit at the ends.

Can the legs be terminated in the field? Yes. The 900 µm tight buffer accepts standard field-installable connectors, and each leg has its own aramid strength member for the crimp.

How many cores can you supply? Standard builds run from 4 to 24 cores, with custom counts and hybrid single-mode/multimode constructions available to order.