Product Overview

The 11kV High Voltage Cable Branch Box provides a secure and efficient method of connecting, splitting, and extending medium-voltage cables in a network. Its fully sealed, corrosion-resistant, and IP33-rated cabinet design ensures safe operation even in extreme environments such as coastal regions, industrial areas, and high-humidity locations.

Designed with a stainless-steel structure, clear functional compartments, and enhanced insulation protection, this cable branch box guarantees stable and long service life with minimal maintenance.

Key Features

1. Robust Outdoor Structure (IP33 Rated)

• Fully enclosed, weatherproof cabinet suitable for long-term outdoor installation
• Protection against dust, water, moisture, and pollution
• High-quality stainless steel panel ensuring strong resistance to rust and corrosion

2. High-Strength Internal Architecture

• Cabinet interior divided into bus chamber and cable chamber
• Bus chamber fabricated using 2mm steel plates, ensuring mechanical strength
• All live parts protected with silicone rubber insulation for enhanced safety
• Stainless steel connector brackets ensure stable support for cable terminations

3. Safe & Reliable Cable Connections

• Standard interphase distance: 180mm, suitable for 11kV systems
• Compatible with load-break connectors, surge arresters, short-circuit indicators, and live display modules
• Cable clamps and grounding terminals included for secure installation

4. Excellent Environmental Adaptability

Designed to maintain stable operation under challenging outdoor conditions such as:

• High humidity
• Heavy winds
• Dust exposure
• Temperature variation
• Vibrations

Ideal for remote substations, roadside installations, and outdoor distribution points.

Working Conditions

Technical Advantages

High Insulation Performance

• Entire busbar area is fully insulated using silicone rubber
• Reduces risk of partial discharge, surface tracking, and arc faults

Flexible Cable Management

• Design allows multiple cable branches
• Convenient cable entry and exit layout
• Suitable for single-core or three-core cables

Long Service Life

• Outdoor-grade materials and ARC-resistant insulation
• Minimal maintenance required
• Built to operate reliably for 20–30 years

Customizable Configurations

• Cable branching options: 2-way, 3-way, 4-way, 6-way
• Surge arrester integration
• Live indication
• Short-circuit fault indicator
• Customized metal enclosures and paint colors

Applications

The ZHENGXI High Voltage Cable Branch Box is commonly used in:

• Urban MV distribution networks
• Ring main unit (RMU) systems
• Industrial electricity distribution
• Commercial power projects
• Outdoor substations
• New energy installations
• Municipal & public utility engineering

Benefits at a Glance

• Safe cable branching for 11kV distribution
• Fully insulated and maintenance-friendly design
• Weatherproof stainless steel enclosure
• Supports multiple cable connection configurations
• Long service life with stable performance
• Ideal for smart grid and modern power systems

FAQ 

1. What is the purpose of an 11kV Cable Branch Box?

A high voltage cable branch box is used to split, connect, or extend medium-voltage power cables in a distribution network. It provides a stable and insulated connection point for ring networks, open-loop systems, and industrial power distribution.

2. How many cable branches can be installed?

Our China cable branch box supports customizable configurations, typically including:

• 2-way
• 3-way
• 4-way
• 6-way
  Depending on project design and cable capacity requirements.

3. Can this 11kV Cable Branch Box be customized?

Yes. ZHENGXI can customize:

• Cable branch quantity

• Enclosure material / thickness

• Surge arresters, fault indicators, and live display

• Logo, color, and cabinet size

• Input/Output cable specifications