Fiber Optic Cabinet，also known as a fiber splicing box or fiber splicing tray, it is a device designed for fiber - line terminal connection and protection. The Fiber Optic Cabinet is mainly used in fiber - optic communication systems such as fiber - to - the - home (FTTH), local area network (LAN), and metropolitan area network (MAN). It provides safe and reliable fixation, splicing, storage, and management functions for optical fiber cables. 

Fiber Optic Cabinet usually made of high - quality engineering plastics or metal materials, it is equipped with fiber splicing trays, fiber storage units, fiber adapters, pigtails, fasteners, and other components.

Functional Characteristics of Fiber Optic Cabinet 

Fiber Splicing and Storage: There is a special space for technicians to perform fiber splicing. It ensures that the spliced optical fiber is well - fixed and protected to prevent damage caused by external forces or environmental factors. 

Port Allocation and Management: By installing fiber adapters and jumpers, flexible allocation and management of fiber links can be achieved. This is convenient for network expansion, troubleshooting, and maintenance operations. 

Protection Performance: Fiber Optic Cabinet has good dust - proof, water - proof, moisture - proof, and UV - proof characteristics, ensuring that the optical fiber network can work stably and reliably in various environments. 

Types of Fiber Optic Cabinet 

By Installation Location: It can be divided into indoor fiber optic terminal boxes, which are used inside buildings, and outdoor fiber optic terminal boxes, which are used in outdoor environments and need to have good waterproof and weather - resistance. 

By Structural Form: There are wall - mounted fiber optic terminal boxes, which are installed on the wall and occupy less space; column - type fiber optic terminal boxes, which are installed on special columns and are suitable for roads, railways, and other occasions; and rack - mounted fiber optic terminal boxes, which are installed on standard 19 - inch racks and are convenient for centralized management and maintenance. 

By Fiber Connection Method: Straight - through fiber optic terminal boxes, where the optical fiber is directly connected in the terminal box, are suitable for point - to - point connection; split - type fiber optic terminal boxes, which can split the optical fiber of a cable to multiple output ports, are used for star - topology. 

By Shell Material: Including metal fiber optic terminal boxes, which are made of metal materials and have good mechanical strength and heat - dissipation performance; and plastic fiber optic terminal boxes, which are made of plastic materials, are light - weight and low - cost, but have relatively poor mechanical strength and weather - resistance. 

By the Number of Optical Fiber Cores: There are small - core fiber optic terminal boxes, which usually contain a small number of optical fiber cores such as 4 cores, 8 cores, and 12 cores and are suitable for small networks; and large - core fiber optic terminal boxes, which can contain dozens or even hundreds of cores and are suitable for large networks and data centers. 

By Special Functions: Protective fiber optic terminal boxes have additional protective measures, such as enhanced sealing and heating and defrosting functions, and are suitable for extreme climate conditions; modular fiber optic terminal boxes have a detachable module design, which is convenient for installing and replacing accessories such as fiber optic adapters.