Overview
The 10 kV cable branch box is an outdoor power distribution device used to branch, connect and switch circuits in medium and low voltage distribution networks. It works as a node in the network where a main cable is tapped into several outgoing cables, which simplifies urban cable networks and reduces the total cable length and civil work required.
The unit is built around a sealed enclosure and is available in low voltage (400 V / 690 V) and high voltage (10 kV to 35 kV) configurations. Cable entry and outgoing positions use prefabricated connectors, so the enclosure can be installed outdoors, indoors or underground depending on the site. Enclosure material is selectable between SMC composite, steel and stainless steel.
Because the branch box is installed at the point where cables are split, it is normally specified together with the switching and protection accessories that the network requires — load switches, circuit breakers, fuses, surge arresters and fault indicators. These are selected per project rather than fixed at a single standard configuration.
Key Features
- Cable branching and switching in one enclosure — a main cable can be tapped into several outgoing cables at a single node, with switching and isolation provided inside the same cabinet.
- Multiple enclosure materials — SMC composite, steel or stainless steel are available, so the box can be matched to the corrosivity and mechanical risk of the installation site.
- Selectable mounting method — floor mounting on prepared foundations, wall mounting, pole mounting and buried installation are all supported.
- Optional protection and indication accessories — load switches, circuit breakers, fuses, surge arresters, live-line indicators, short-circuit fault indicators and display panels can be fitted as required.
- Built for outdoor service — the enclosure is designed for outdoor installation and for sites with high pollution, high humidity or large temperature swings.
- Configurable voltage and current ratings — low voltage and medium/high voltage versions are available, with rated current and circuit count set by the project.
Technical Specifications
| Rated voltage | Low voltage 400 V / 690 V; medium and high voltage 10 kV – 35 kV |
|---|---|
| Configuration | Incoming and outgoing circuit count selected to suit the network |
| Enclosure material | SMC composite, steel or stainless steel |
| Mounting type | Floor (ground) mounted, wall mounted, pole mounted or underground |
| Outgoing branches | Flexible combination; branch count configured per project |
| Optional accessories | Load switch, circuit breaker, fuse, surge arrester, live-line indicator, short-circuit fault indicator, display panel |
| Applicable standards | IEC 62271-200, IEC 60439-5, IEC 60529 |
| Quality control | Dielectric and thermal performance testing on every unit; full batch traceability |
Applications
- Urban power grids — cable transformation and network reconstruction projects.
- Residential communities — power distribution for high-rise buildings and housing complexes.
- Industrial parks and factories — reliable power supply for manufacturing facilities.
- Commercial centres — distribution for shopping malls, office buildings and business districts.
- Infrastructure projects — mining, airports, railways, harbours and power stations.
- Renewable energy — solar and wind power infrastructure.
- Smart cities — underground cable networks and intelligent distribution systems.
Installation Conditions
- Confirm the foundation or support arrangement that matches the chosen mounting type — floor, wall, pole or buried.
- Provide adequate clearance around the enclosure for cable bending radius and for future cable termination work.
- Select the enclosure material to suit the local environment: SMC composite, steel or stainless steel.
- Check the required protection level (IP rating) against the site conditions before ordering.
How to Select
- Voltage level — low voltage (400 V) or high voltage (10 kV to 35 kV).
- Rated current — the amperage the branch box must carry.
- Configuration — the number of incoming and outgoing circuits required.
- Enclosure material — SMC composite, steel or stainless steel.
- Mounting type — floor, wall, pole or underground.
- Optional accessories — load switch, circuit breaker, fuse, surge arrester, indicators and other functions.
- Protection level — the IP rating the site requires.
FAQ
What is a 10 kV cable branch box used for?
It branches, connects and switches circuits in a medium voltage cable network. A main cable is tapped into several outgoing cables at one enclosure, which reduces total cable length and simplifies the network layout compared with running a separate feeder to each load.
Is it available in both low voltage and high voltage versions?
Yes. The branch box is available in low voltage (400 V / 690 V) and medium or high voltage (10 kV to 35 kV) configurations. The version you need depends on the network voltage at the installation point.
How many outgoing branches can be provided?
The branch count is set by the project. The enclosure supports a flexible combination of incoming and outgoing circuits, and the number is confirmed against your single-line diagram before manufacture.
Which mounting methods are supported?
Floor (ground) mounting on prepared foundations, wall mounting, pole mounting for overhead distribution, and buried underground installation are all supported.
Which enclosure material should be chosen?
SMC composite, steel and stainless steel are all offered. Stainless steel is normally chosen for highly corrosive environments such as coastal or heavily polluted sites, while SMC composite and steel suit more moderate conditions.
What optional accessories can be fitted?
Load switches for switching and isolation, circuit breakers for overload and short-circuit protection, fuses for additional protection, surge arresters against lightning and overvoltage, live-line indicators, short-circuit fault indicators for fault location, and display panels for status monitoring.
Which standards does it comply with?
IEC 62271-200, IEC 60439-5 and IEC 60529, with CE marking and ISO 9001 quality management. Every unit receives dielectric and thermal performance testing before dispatch.
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