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Load Break Switch Branch Boxes Series Cable Branch Boxes & Switching Stations
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Cable Branch Boxes with Load Break Switch — Ring Main Function
Cable branch boxes with a built-in load break switch combine cable distribution with switching capability, allowing each outgoing feeder to be isolated and switched for ring-main operation. Rated 12–24 kV, 630A, they use SF6 or vacuum load break switches for maintenance-free switching in urban distribution networks and ring main configurations.
Applications
Urban ring-main distribution networks
Feeder sectionalizing and isolation
Municipal grid reconfiguration
Industrial and renewable plant distribution
Key Features
- Integrated SF6 or vacuum load break switch per feeder
- Ring-main switching capability with fault isolation
- 630A rated main busbar for 12–24 kV networks
- Compact pad-mounted or surface-mounted enclosure
- Manual or motorized operating mechanism options
- Configurable feeder count for loop networks
Selection Guide
Switching
Specify manual or motorized operation based on automation needs.
Feeders
Choose the outgoing feeder count to match the loop configuration.
Insulation
Select SF6 or vacuum switch per project preference and environment.
- Frequently Asked Questions
Why add a load break switch to a branch box?
A load break switch lets each feeder be switched and isolated for maintenance or fault clearing, enabling ring-main operation where a cable fault can be isolated while the rest of the loop stays energized.
SF6 or vacuum switch?
Both are maintenance-free; SF6 offers compact gas insulation, vacuum offers high switching endurance. Either is suitable for 12–24 kV distribution.
What is the standard rating?
Typically 630A, 12–24 kV, with load break switching duty.
Instant Selection & Quote Calculator
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| Base price (interpolation) | $1,050 |
| × Product factor | ×1.0000 |
| × Country factor | ×1.0000 |
| × Copper-linked factor | ×1.0000 |
| + Options / accessories | $0 |
Complete equipment — no winding copper linkage
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