DFW-12 Cable Branch Box

Junray Electrical DFW-12 Cable Branch Box is a compact, cost-effective solution for splitting a single 10kV cable into multiple branches without the need for a Ring Main Unit (RMU). Designed for direct outdoor installation, it features a fully sealed enclosure, IP33/IP54/IP67 protection options, 304 stainless steel construction, and an anti-aging powder coating that withstands sun and rain exposure. Supporting 2 to 6 branches, it enables rapid plug-and-play installation without specialized tools—reducing both equipment costs and civil engineering expenses. Suitable for urban cable networks, rural distribution, photovoltaic cabling, construction sites, and industrial parks.

Product Features

Cable Branching:Designed to split a single 10kV cable into multiple branches, this solution enables cable tapping without the need to construct a separate Ring Main Unit (RMU), making it perfectly suited for cable-based power distribution networks.

Compact Footprint: Featuring an extremely compact size and minimal spatial requirements, DFW-12 Cable Branch Box is ideally suited for installation in small roadside or outdoor locations. By avoiding the need for a large installation site, it significantly reduces land acquisition costs.

Cost-Effective:Offering a lower cost point than traditional Ring Main Units, this solution is highly economical for cable branching applications. Instead of incurring the high expense of purchasing an RMU, a branching box suffices—thereby achieving substantial cost savings.

Convenient Installation: Facilitating rapid deployment, the installation process is highly convenient; simply connecting the cables makes the unit ready for immediate use. This streamlined setup requires minimal time and effort, making it the ideal choice for fast-track projects.

Technical Specifications

Precision Craftsmanship Details

1. Cable Connectors: Specialized cable connectors facilitate reliable connections and branch-offs.

2. Outdoor Protection: IP54-rated protection ensures water and dust resistance, making DFW-12 Cable Branch Box suitable for outdoor environments.

3. Anti-Aging Coating: Features a specialized outdoor powder coating that resists aging and withstands exposure to sunlight and rain without degradation.

4. Sealed Enclosure: A fully sealed structure provides comprehensive protection against water and dust, safeguarding the internal connections.

5. Standards-Compliant Design: Engineered to meet safety standards while ensuring convenient maintenance and inspection.

Applicable Scenarios

The DFW-12 Cable Branch Box manufactured by Junray Electrical is suitable for:

Urban Cable Networks: Urban cable grids and cable branching

Rural Cable Networks: Rural cable grids and cable branching

Photovoltaic Cabling: Branching for PV cable systems

Construction Site Cabling: Branching for construction site cable systems

Industrial Park Cabling: Branching for industrial park cable systems

Quality Assurance

Manufactured in strict compliance with the national standards for DFW-12 Cable Branch Boxes, every unit undergoes rigorous sealing and withstand voltage testing to ensure stable and safe operation. We offer customizable branching configurations, allowing you to commission a bespoke branch box tailored precisely to your specific cable branching requirements—ensuring a perfect fit for your application needs.

Industrial Park Project in Nairobi, Kenya

Project Overview

·Project Name: Cable Distribution Project for an Industrial Park in Nairobi

·Location: Nairobi, Kenya

·Completion Date: November 2025

·Project Scale: 12 enterprises within the industrial park; 24 cable branch boxes

Products Used

·Model: DFW-12 High-Voltage Cable Branch Box

·Quantity: 24 units

·Configuration: 1-In-2-Out / 1-In-4-Out; Standard type; 304 stainless steel

·Certification: CE Certified

·Special Requirements: Outdoor installation; maintenance-free; suitable for Africa's high-temperature environment

Solution

The industrial park in Kenya required a cable distribution system with multiple connection points. Given the limited local maintenance capabilities, there was a high demand for equipment reliability and low maintenance requirements. We provided the DFW-12 export solution:

1. Strong Environmental Adaptability

·IP67 protection rating and fully sealed structure; suitable for Africa's hot and dusty conditions

·304 stainless steel enclosure with excellent corrosion resistance

·Wide operating temperature range (-40°C to +60°C); stable operation in high temperatures

·Maintenance-free design, significantly reducing maintenance costs

2. Easy Installation

·Compact and lightweight; convenient for transport and installation

·Plug-in cable connectors allow for quick and simple installation

·No specialized tools required; installation can be performed by local electricians

·Eliminates the need for a dedicated switchroom, saving on civil engineering costs

3. High Cost-Effectiveness

·Affordable pricing; over 70% cheaper than constructing a switchroom

·CE certified, ensuring quality

·Mature technology with widespread global application

·Complete technical documentation provided in English

Customer Feedback

"We needed a cost-effective and reliable cable distribution solution for our industrial park in Nairobi. Junray's DFW-12 cable branch boxes were perfect — easy to install, no need to build switchrooms, and completely maintenance-free. They have been running for 4 months now, even in the hot and dusty weather, and everything is working perfectly. The price is also very competitive. Great value for money." 

—— Operations Manager, Kenya Industrial Park

Retrofit Project Case Study

This project involves the conversion of overhead lines to underground cables in an older urban residential area. The original 10kV system utilized bare overhead conductors; the wiring was disorganized, the failure rate was high, and the system was highly susceptible to interference from trees and weather conditions, failing to meet the requirements for capacity expansion and safe power supply in the area. The retrofit replaces all overhead lines with underground cables. High-voltage branch switching equipment is required at load nodes to facilitate cable branching, ring network interconnection, and fault segmentation/isolation.

The project area encompasses multiple high-rise residential buildings, commercial facilities, and public lighting systems, characterized by concentrated loads and strict requirements for power supply reliability. Due to narrow roadways and dense landscaping, the site is unsuitable for large-scale switching stations or indoor high-voltage switchgear rooms; consequently, DFW-12 outdoor fully insulated cable branch boxes were selected as the node distribution equipment.

Issues Prior to Retrofit

The original overhead lines had poor insulation, making them prone to tripping and short circuits during thunderstorms, resulting in a high annual failure rate.

Overhead line branch connections were exposed, leading to oxidation and overheating over time, which posed safety hazards.

There were no segmentation or isolation nodes; a single-point fault caused power outages across the entire line section, resulting in a wide scope of service interruption.

Expanding line capacity was difficult, making it impossible to meet the growing load demands from new EV charging stations, elevators, and lighting systems.

Overhead lines detracted from the urban appearance and failed to meet standards for urban undergrounding and landscape improvement.

Equipment Configuration Plan

Based on the site's node layout and power distribution capacity, DFW-12 10kV outdoor cable branch boxes were installed at multiple locations along the line. These units feature SF6 load-break switches, support ring network configurations and fault segmentation/isolation, have a rated current of 630A, and are fully insulated, fully sealed outdoor-rated devices. Key Specifications:

Model: DFW-12 Outdoor High-Voltage Cable Branch Box

Rated Voltage: 12kV (for 10kV distribution networks)

Rated Current: 630A

Structure: Fully insulated, fully enclosed, maintenance-free, outdoor floor-standing unit

Functional Features: Ring network interconnection, cable branching, fault segmentation and isolation, live-line indication, fault indication

Protection Rating: IP44 (suitable for outdoor environments involving rain, snow, condensation, and dust); Cable Entry/Exit: Multi-circuit branching to meet local area cable switching needs

Installation and Application Scenarios

The unit is installed in available green spaces along residential roads; it requires no dedicated housing or extensive civil engineering foundations, resulting in a small footprint and a short construction period. The DFW-12 branch box segments the main cable and routes power to individual building distribution rooms and box-type substations, creating a ring network power supply structure that enables "fault segmentation without mutual interference."

Operational Results After Retrofitting

Significantly improved power supply reliability: Eliminates overhead line faults; no tripping occurs during thunderstorm seasons; line fault rates drop by over 95%.

Controllable fault scope: Leveraging the branch box's segmentation and isolation capabilities, a single-point fault isolates only the affected section while maintaining power to other areas, drastically reducing the scope of outages.

Safe and stable operation: The fully insulated, sealed structure eliminates issues such as oxidation, overheating, or leakage at exposed connections; it offers outdoor resistance to corrosion and condensation, ensuring long-term, maintenance-free operation.

Flexible capacity expansion: The multi-circuit branch design allows for the direct connection of new loads, EV charging stations, or additional power requirements at the branch box, eliminating the need for extensive excavation or rewiring.

Neat and orderly urban appearance: All cables are placed underground, eliminating cluttered overhead lines and meeting requirements for the standardization and aesthetic improvement of urban distribution networks.

The DFW-12 outdoor cable branch box is the preferred choice for converting urban 10kV distribution networks to underground cabling, upgrading older residential areas, and managing load distribution across districts. Compared to traditional switching stations and high-voltage switchgear, this solution features a compact footprint, lower costs, rapid installation, and a maintenance-free design, while offering robust ring-network capabilities. It is ideally suited for constrained urban spaces, residential areas, commercial districts, and industrial parks, effectively enhancing the reliability of power distribution and simplifying operation and maintenance.