Network Connection Boxes
Network connection boxes form the foundation of a properly organised cabling infrastructure - both fibre optic and copper. If you are responsible for designing, expanding, or maintaining a network within a company, this guide will help you select the appropriate model for a specific installation environment. Below you will find an overview of the types and manufacturers available in the Senetic offer.
What are network connection boxes and what are they used for?
A network connection box (also known as a junction box or fibre distribution box) is a closed enclosure that plays a key role in the organisation, protection, and distribution of cable connections. In practice, it allows for the joining, terminating, and splitting of network cables in one, organised location - regardless of whether we are dealing with fibre optic cables or copper cabling of Cat6 or Cat7 categories.
Connection boxes protect electrical connections from damage and prevent electrical hazards, which directly impacts the safety of the entire installation. In the case of fibre optic networks, the enclosure protects splices (fusion splices), SC or LC adapters, and PLC splitters from dust, moisture, and vibrations. In copper installations, the boxes are used to connect sections of twisted pair cables, install RJ45 sockets or LSA/IDC modules - enabling the extension, branching, or consolidation of cables.
Connection boxes facilitate the organisation and maintenance of cabling, which is particularly important in business environments where the time to repair faults directly translates into downtime costs. Connection boxes are found in electrical and telecommunication installations - from server rooms and office buildings to multi-family dwellings and industrial facilities. Connection boxes are used in residential and industrial applications, and their proper selection ensures compliance with industry standards and provides long-term reliability of the network.
Types of connection boxes
The category of network connection boxes includes various types of products designed for specific types of installations and transmission media. The choice of the appropriate variant depends on the type of cabling, the installation location, and the requirements for bandwidth and protection.
Fibre Distribution Boxes (FTTH)
FTTH (Fibre to the Home) distribution boxes are connection boxes intended for fibre optic networks. Their main task is to organise splices and terminations of fibre optic cables - inside the enclosure, there are splice trays, optical adapters, and space for PLC splitters.
Boxes for Copper Cables and RJ45 Systems
Boxes for copper cabling are compact enclosures that allow for the joining, repairing, or branching of network cables in Cat5e, Cat6, Cat6A, and Cat7 standards. In Ethernet installations, boxes are used to connect network cables - with RJ45 sockets or terminals, supporting frequencies up to 600 MHz and beyond.
Variants are available in unshielded (UTP) and shielded (FTP/STP), with shielded versions recommended in environments exposed to electromagnetic interference. Boxes with Keystone modules allow for the replacement of sockets without changing the entire box, significantly facilitating future upgrades and repairs of cabling. The enclosures are most often made of metal (to ensure shielding) or durable ABS plastic.
Boxes for CCTV/PoE Installations
IP monitoring and access control systems require special connection boxes that handle both data signals and Power over Ethernet (PoE/PoE+) power. These types of connection boxes combine the function of an RJ45 patch panel with space for a power supply or converter, simplifying the installation of cameras and sensors.
For outdoor installations, weather resistance is crucial - weather-resistant boxes have an IP66 or IP68 protection rating. Due to heat losses generated by PoE, the enclosures must provide adequate temperature dissipation. These boxes are usually installed near cameras or on building facades, making their compact dimensions and aesthetic installation significant.
Manufacturers - DIGITUS, Intellinet, TP-LINK
The Senetic offer includes products from three renowned manufacturers of network connection boxes:
- DIGITUS - a German manufacturer offering professional FTTH boxes for outdoor installations and solutions for copper cables.
- Intellinet - a manufacturer of universal solutions for network infrastructure, offering connection boxes and accessories compatible with Cat6 and Cat7 structured cabling systems. Intellinet products are designed for ease of installation and maintenance.
- TP-LINK - a globally known manufacturer of network components, whose portfolio includes connection boxes for office and telecommunication applications. TP-LINK products combine reliability with competitive pricing, making them suitable for projects requiring a large number of connection points.
Applications in Network Installations
Network connection boxes are used in a wide range of environments - from small offices to critical infrastructure. Connection boxes should be placed in locations that provide easy access - both for ongoing maintenance and future expansion.
The most important application areas include:
- Office Buildings and Data Centres - boxes serve as points of consolidation for structured cabling, enabling efficient distribution of connections between floors and sections of the building. Electrical distribution boards organise and manage connections, ensuring compliance with electrical regulations.
- Telecommunication and Operator Networks - FTTH boxes are typically installed as the last point of protection for fibre optic cables before reaching the subscriber, providing operators with control over splices and splitters.
- Smart Building and IoT Systems - the increasing number of sensors, controllers, and IoT devices requires a dense network of connection points, where PoE boxes integrate power and data transmission.
- Security Infrastructure (CCTV, Access Control) - connection boxes are common in industrial applications, where monitoring systems require reliable connections resistant to weather conditions.
Frequently Asked Questions
What is the difference between a connection box and a patch panel?
A connection box is a closed enclosure used to protect and organise splices or cable connections at a specific point in the network. A patch panel, on the other hand, is a component mounted in a 19-inch rack that allows for systematic termination and switching of multiple ports. The box serves as a distribution or termination point in the field, while the patch panel serves in the central node of the network.
What IP protection rating should be chosen for outdoor installations?
For outdoor mounting, a minimum rating of IP65 is recommended, which provides full protection against dust and water jets. In locations prone to flooding or heavy rainfall, it is worth considering IP66 or IP68. Electrical distribution boards prevent electrical hazards by providing the appropriate level of protection.
How many fibre connections can a typical FTTH box accommodate?
Typical FTTH boxes are available in configurations from 4 to 48 optical adapters (SC simplex or LC duplex). Compact models accommodate 4–8 splices, while larger units can hold 12, 24, 36, or even 48 fibre optic cables with splice trays and PLC splitters.
Is a connection box suitable for cabling monitoring cameras?
Yes - boxes for CCTV/PoE installations allow for the connection of signal and power cables in one location. For outdoor installations, it is important to choose a model with the appropriate IP class and materials resistant to corrosion and UV radiation.
How to secure fibre splices inside a distribution box?
Splices should be arranged in dedicated trays (splice cassettes) while maintaining the minimum bend radius of the fibres. The enclosure must ensure tightness - rubber seals at the cable entries and mechanical closures protect against moisture retention inside the box. Regular inspection of the seals is part of preventive maintenance.
