Distribution

DFW 12 kV Cable Branch Box

The DFW cable branch box connects and branches medium-voltage cables in 12 kV underground distribution networks. Its outdoor enclosure brings cable terminations together at a dedicated junction, supporting feeder extensions and connections to multiple outgoing circuits.

This datasheet covers the 630 A configuration, with a short-time withstand rating of 20 kA for 3 seconds and a peak withstand rating of 50 kA. Cable terminations, incoming and outgoing ways and entry arrangements are selected for the network layout. The enclosure is rated IP33.

Technical Specifications

Rated Voltage	12 kV
Rated Frequency	50 Hz
Rated Current	630 A
Short-Time Withstand Current	20 kA (3 s)
Peak Withstand Current	50 kA (0.3 s)
Power-Frequency Withstand Voltage	42 kV / 1 min
Lightning Impulse Withstand Voltage	105 kV
Enclosure IP Rating	IP33

Key Features

12 kV medium-voltage cable branching and junction.
Outdoor weather-resistant enclosure.
For underground cable networks.
Sealed cable-connection points.

Typical Applications

Residential developments
Industrial parks and commercial centres
Urban grid upgrades

Installation & Aftercare

Prepare the site, plan routine checks and keep service records.

What needs to be ready before installation?

Match connector interfaces to cable voltage, cross-section and termination type; reserve space for the actual cable bending radius.
Use a stable plinth and cable trench with drainage; prevent standing water around cable entry points.
Retain access to compartment doors and cable identification, with enclosure earthing connected to the site earthing system.

What should operators check during routine rounds?

Inspect the enclosure, locks, seals and surrounding drainage; check for corrosion, water entry and damaged cable labels.

What is covered during planned maintenance?

During planned isolation, qualified personnel inspect cable terminations and earthing connections for contamination, tracking or heat damage.
Investigate repeated feeder faults or evidence of moisture before returning an affected branch to service.

Customization Options

Define the electrical configuration and the details needed for your site.

Cable branches: Number of incoming and outgoing cable connections, circuit arrangement and cable-entry direction.
Connector interfaces: Cable cross-section, insulation type, screen connection and separable-connector interface.
Electrical duty: 630 A configuration; confirm the required cable connections and short-circuit withstand duty.
Enclosure & accessories: Plinth and cable-entry layout, earthing points, phase identification and fault-indication requirements.

Project-specific options and accessories are confirmed in the quotation and approved drawings.