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HS144-21 FOSC Dome 144-Core Fiber Optic Splice Closure IP68 1-In/6-Out |myhopshun
Product Description
Why is the Dome-style FOSC the best choice for splicing backbone fiber optic cables?
In FTTx backbone networks, fiber optic splice closures must handle the splicing and splitting of high-fiber-count cables. Compared to horizontal closures, the dome design offers greater internal space to accommodate more splice trays. It also ensures superior waterproofing through a top-sealing structure—which is less prone to leakage than side-sealing designs, particularly in scenarios involving long-term underground burial or standing water in ducts.
Constructed from PP+GF (polypropylene with glass fiber) rather than PC+ABS, the housing is more robust and resistant to corrosion, including exposure to acids, alkalis, and salts. Booklet-style splice trays allow for independent access to each tray; a fiber bend radius of ≥40mm ensures low signal loss. The re-openable design means the entire closure does not need replacement for future capacity expansion.
The cylindrical black PP+GF housing features a top-mounted metal clamp locking mechanism to ensure an IP68 seal.
The base is equipped with one main cable entry port and six branch cable exit ports, all featuring hexagonal nut sealing caps.
The white splice trays flip open like the pages of a book; each tray holds 24 fibers, with a maximum of 12 trays providing a total capacity of 288 fibers.
An external metal clamp locks the upper and lower sections together, working with a silicone gasket to achieve IP68-rated protection.
Cable ports utilize heat-shrink sealing, accommodating cable diameters of 8–19mm for entry and 6–17mm for exit.
Re-openable design: The unit can be opened after installation, facilitating future capacity expansion and maintenance. Environmental and Performance Specifications
Dimensions: 500 × 300 mm
Weight: 4.93 kg
Material: PP+GF (Glass Fiber Reinforced Polypropylene)
Color: Black
Maximum Capacity: 144 cores (per your requirement; rated for 288 cores in documentation)
Cores per Tray: 24 cores (single-fiber)
Maximum Number of Trays: 12 trays
Port Configuration: 1 In / 6 Out
Cable Inlet Diameter: 8–19 mm
Cable Outlet Diameter: 6–17 mm
Protection Rating: IP68 ⭐
Inlet Seal: Heat-shrink seal
Housing Seal: Silicone gasket
Operating Temperature: -40°C to +80°C
Fiber Bending Radius: ≥40 mm
Key Application Scenarios
High-capacity fusion splicing nodes for FTTx backbone networks.
Straight-through or branching connections for aerial, duct, or direct-buried optical cables.
Long-term damp environments such as underground utility tunnels and cable manholes (IP68).
Scenarios requiring future capacity expansion or reusability.
Specification
| Parameter | Technical Specification |
|---|---|
| Model | HS144-21 |
| Product Type | Dome Fiber Optic Splice Closure (FOSC) |
| Dimensions | 500 × 300 mm |
| Weight | 4.93 kg |
| Max Capacity | 144 Cores |
| Port Configuration | 1 In / 6 Out |
| Cable Diameter (In) | 8–19 mm |
| Cable Diameter (Out) | 6–17 mm |
| Fiber per Tray | 24 (single core) |
| Max Number of Trays | 12 |
| Max Number of Fibers | 144 (single core) |
| Color | Black |
| Material | PP+GF (Glass-Fiber Reinforced Polypropylene) |
| Protection Level | IP68 |
| Sealing of Inlet/Outlet | Heat-shrinkable sealing |
| Sealing of Shells | Silicone rubber |
| Splice Tray Type | Booklet-Style Flip Trays |
| Fiber Bend Radius | ≥40 mm |
| Working Temperature | -40℃ ~ +80℃ |
| Reusable | Yes, can be reopened and reused |
| Installation Method | Overhead / Duct / Direct Buried |
Package Information
| Parameter | Technical Specification |
|---|---|
| Packing Quantity | 4 sets / carton |
| Carton Size | 67 × 64 × 53 cm |
| Gross Weight | 20.8 kg / carton |
Faq
Q1: What is the HS144-21 used for?
A: It is a 144-core dome fiber optic splice closure (FOSC) used for optical fiber connection and protection in overhead, duct, and direct-buried FTTx networks.
Q2: Is it a dome or inline closure?
A: It is a dome (also called cap-style) closure, which uses top sealing instead of side sealing for better water resistance.
Q3: What is the protection level?
A: IP68 — the highest protection rating, suitable for long-term water immersion in manholes, duct banks, and underground environments.
Q4: What is the maximum capacity?
A: 144 cores, with 24 fibers per tray and up to 12 trays (documented capacity: 288 cores; configured here as 144 cores).
Q5: What is the port configuration?
A: 1 input port and 6 output ports. Input cable diameter 8–19mm; output cable diameter 6–17mm.
Q6: What material is the enclosure made of?
A: PP+GF (Glass-Fiber Reinforced Polypropylene), which is more robust and corrosion-resistant than standard PC+ABS.
Q7: How is it sealed?
A: The shells are sealed with silicone rubber and locked with hoops; the inlet/outlet ports use heat-shrinkable sealing.
Q8: What is the fiber bend radius?
A: ≥40 mm, ensuring low signal loss.
Q9: Can it be reopened after installation?
A: Yes, the product can be opened again and reused after installation, making it convenient for future expansion.
Q10: What is the box size and weight?
A: Box size 500×300mm; weight 4.93kg.
Q11: What is the working temperature range?
A: -40℃ to +80℃.
Q12: What is the packing information?
A: 4 sets per carton; carton size 67×64×53cm; gross weight 20.8kg per carton.
Related Product: HS096-20 96-Core FOSC with IP68 Protection & Screwless Seal