CB-2-144
optic closure
CB-2-144
optic closure

Fiber Optic Splice Closure

Fiber optic splice closure , large D type, 24-144 core, ABS material, overhead waterproof and underground connector kit.

  • The protection level reaches IP66.
  • High-quality ABS or PP materials ensure durability.
  • Suitable for optical cables with diameters from Φ5mm to Φ38mm, it can be installed overhead, underground, in ducts, in wells, or inside holes.
  • Fiber coil core count: up to 144 cores
  • Suitable for ambient temperatures from -40℃ to +65℃
  • The product has multiple reuse and capacity expansion capabilities.
  • The product employs a double-clipping technique to ensure that there is no additional attenuation in the optical fiber inside the box.
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2In2out vertical dome type Fiber optic splice closure

A fiber optic splice closure is a passive device that provides excellent protection for fiber optic splices. It can be installed overhead, in conduits, or underground. Underground fiber optic splice closures, also known as horizontal splice closures, have fiber optic inputs and outputs on opposite sides of the closure. Horizontal splice closures are suitable for backbone network applications. All closures feature excellent sealing performance. Made of high-quality PC+ABS material, they are highly durable for both overhead, conduit, and underground installations.

performance advantages
1. Easy to operate.
2. Reliable sealing performance.
3. Easy to open repeatedly.
4. High strength, can be directly buried or installed overhead.
5. Reliable grounding protection.
6. Protect the optical fiber throughout the entire process and ensure that its bending radius is ≥40mm.
7. Easy and quick to operate and maintain.

Main technical requirements and indicators
Material: ABS, PP
Function: To protect the fiber optic cable splice.
External dimensions (mm): (Length * Width * Height) 46.5 * 1.85 * 1.25
Weight : 2.03 kg​
Fiber curvature radius: ≥37.5mm
Additional loss of fiber optic cable: ≤0.01dB
Fiber optic cable length: ≥1.6m
Maximum fiber capacity: 144 cores
Lateral pressure resistance: ≥2000N/10cm
Impact resistance: ≥20 N.m

Structural features
1. High-strength engineering plastics are used with added anti-aging agents.
2. High-quality stainless steel screws and hooks are used.
3. Arc-shaped structure and large fiber melting tray design.
4. Install optical cable and reinforcing core fixing devices.
5. Fiber optic path design throughout the entire process.
Internal display Internal fiber optic disk display Melt fiber effect demonstration

Fiber optic splice closure Technical Sheet

Detail Display

Fiber optic splice closure Applications

1. FTTH access networks for telecom carriers: 1:128 splitting ratio meets dense user broadband deployment needs;
2.Government/enterprise/campus networks: 1U compact size saves equipment room space, dual power backup ensures uninterrupted critical services;
3. Broadband services for small and medium ISPs: Multi-uplink ports (GE/SFP/10GE SFP+) flexibly adapt to different bandwidth plans, reducing networking costs;
4. Smart community/campus networking: Supports mixed networking of multi-brand ONUs, adapting to IoT device access such as access control and monitoring;
5. Remote area communication coverage: 20KM physical transmission distance + wide operating temperature range (-10℃~55℃) for complex environment deployment.

FAQ: Fiber Optic Splice Closure

Q1: What is the main function of this splice closure?​
A1: It provides a sealed, protected environment for splicing and storing fiber optic cables, ensuring long-term reliability and signal integrity.
Q2: What cable types and fiber counts does it support?​
A2: It is compatible with ADSS, aerial, buried, and duct cables, with a maximum capacity of 144 fibers.
Q3: Is it suitable for outdoor harsh environments?​
A3: Yes. It features IP68-rated sealing, UV resistance, and robust mechanical protection for use in aerial, underground, and direct burial applications.

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