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SF6 Gas Insulated Branch Boxes Series Cable Branch Boxes & Switching Stations
3 Models available
Images are for illustration purposes only
SF6 Gas Insulated Branch Boxes — Gas Insulated Junction
SF6 gas insulated cable branch boxes use sealed SF6 insulation for compact, maintenance-free medium-voltage cable junction and switching. Rated 12–24 kV, 630A, for underground distribution where sealed gas insulation provides immunity to moisture and contamination.
Applications
Underground distribution junctions
Harsh and humid environments
Urban network sectionalizing
Industrial medium-voltage distribution
Key Features
- Sealed SF6 gas insulation
- Maintenance-free operation
- 12–24 kV, 630A
- Compact and moisture-immune
- Load-break and fused options
- Suitable for underground and harsh sites
Specifications Range
All specifications and dimensions can be customized upon request
| Key parameters | Model Range |
|---|---|
| Rated Voltage | 24 |
| Rated Current | 630 A |
| Main Circuits | 4 |
| Short-time Withstand Current | 20 kA |
| Protection Level | IP4X |
| Standard | GB3906, IEC 62271-200 |
| Compare | Model | Series | Rated voltage (kV) | Current (A) | Frequency (Hz) | Insulation | Standard | Weight | Dimensions |
|---|---|---|---|---|---|---|---|---|---|
| SFB-630-1W | SF6 Gas Insulated Branch Boxes | 24 | 630 | - | SF6 gas | GB3906, IEC 62271-200 | 124 kg | 2270×1765×2775 mm | |
| SFB-630-2W | SF6 Gas Insulated Branch Boxes | 24 | 630 | - | SF6 gas | GB3906, IEC 62271-200 | 124 kg | 2270×1765×2775 mm | |
| SFB-630-3W | SF6 Gas Insulated Branch Boxes | 24 | 630 | - | SF6 gas | GB3906, IEC 62271-200 | 124 kg | 2270×1765×2775 mm |
Product Drawing
Cable Branch Box - SFB-630-2W
Note: This is a general product illustration. For detailed technical drawings and specifications, please contact our engineering team.
Selection Guide
Voltage
Match 12–24 kV system voltage.
Environment
Choose SF6 for harsh, humid or underground installations.
- Frequently Asked Questions
What is an SF6 gas insulated branch box?
An SF6 branch box uses sealed SF6 gas insulation for compact, maintenance-free cable junction and switching, immune to moisture and contamination.
Why SF6 insulation?
SF6 gas insulation allows compact construction and maintenance-free operation in harsh or humid environments.
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Certification
The values below are computed from what you selected above. Anything that cannot be computed yet is shown as an em dash — never as zero.
Iₙ = S / (√3·U) · I_sc = 100·Iₙ / uₖ · S_sc = √3·U·I_sc · I_p = k·Iₖ
Still required to complete the calculation: rated capacity S, impedance voltage uₖ, short-time or peak withstand current.
Per-model values (P0 / Pk / uₖ declared by the factory, losses, noise, temperature rise, dimensions, weight) are not in the product library: those rows stay at an em dash until the factory parameter sheet is supplied. An em dash means the value is unavailable — it is never rendered as zero.
Reference prices are for estimation only and do not constitute a formal offer.
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