DFW-12 Cable Distribution Box

DFW-12 is a fully insulated and fully sealed cable distribution box designed for medium-voltage power distribution networks. It provides flexible cable branching and connection solutions while effectively reducing fault rates in distribution lines. With a compact structure and robust enclosure, DFW-12 is suitable for outdoor, underground, and harsh environmental conditions. The product supports multiple cable connection configurations and can be used as an alternative solution to ring main units in specific applications, offering safe, reliable, and low-maintenance operation for urban and industrial distribution systems.

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Overview

The cable distribution box is a excellent product to solve the problem of too massive brunches. It has the feature of fully insulated and fully sealing, which can decrease the fault ratio in the power supply line.

The distribution is simple, convenience and flexible. In some situations, it can replace the ring main unit. It also can be put into water and underground which suit to the place of business center, industrial garden, cities and so on. According to the structure and the kind of cable connector, it can be divided as: American cable distribution box, European cable distribution box and distribution box with switch.

Product Feature

Fully sealing structure.
Without maintaining, against dust, flood and corrosion and so on, suit to the situation of outdoor, water and any other serious location.
The structure is flexible, and there are 8 branches can be used for various connecting.
Small volume, compact structure, simple installation and convenience operation.
The 200A branch cable connector can be used as a load switch, which has a load insert, so it has the feature of disconnect switch.
Can connect to the fault indicator for fault examining of cable.
There are various box’s materials can be chosen: Common steel matches the military green, mirror surface stainless steel, stainless steel matches the military green and so on.

Model

Technical Specification

Technical specification	200A loop specification	600A loop specification
Rated voltage	12kV	12kV
Max. Voltage of phase to phase	14.4kV	14.4kV
Max. Voltage of phase to earth	8.3kV	8.3kV
1 min power-frequency withstand voltage	42kV	42kV
15 min DC withstand voltage	52kV	52kV
Lightning impulse withstand voltage	75kV	75kV
Mini corona starting voltage	11kV	11kV
Rated current	200A	600A
Rated thermal standing current	3.5kV/3s	20kV/2s
Rated dynamic standing current	10kA/0.2s	50kA/0.3s
Partial discharge	≤10pc/15kV	≤10pc/15kV
Loop resistance	≤40 μΩ	≤40 μΩ
Protection degree	IP33	IP33

Foundation

Model	Length A (mm)	Width B (mm)	Height H (mm)	Weight (kg)
DFW3-200 (200A three-way bus bar)	1219	381	762	75
DFW4-200 (200A four-way bus bar)	1524	381	762	89
DFW2-600 (600A two-way bus bar)	1219	559	762	90
DFW3-600 (600A three-way bus bar)	1219	559	762	94
DFW4-600 (600A four-way bus bar)	1676	559	762	116