VS1-12 Indoor Vacuum Circuit Breaker
Fixed indoor 12 kV breaker with mechanism-body integration and solid-sealed poles — up to 4000 A / 40 kA, 20,000 mechanical operations and 50 full-fault interruptions; mates with XGN fixed switchgear.
- Ambient −15 °C … +40 °C (storage/transport to −30 °C); altitude ≤ 1000 m (insulation uprated for higher sites)
- Daily RH ≤ 95 %, vapour pressure ≤ 1.8×10⁻³ MPa; seismic ≤ 8
- No fire, explosion, heavy pollution, chemical corrosion or severe vibration
A cleaner, more reliable approach to MV switching
The HP-ELS series replaces SF₆ with environmentally friendly insulating media while keeping the proven safety and performance utilities expect from gas-insulated switchgear.
Product Overview
The VS1-12 indoor fixed-type vacuum circuit breaker is indoor switchgear for three-phase AC 50 Hz rated 12 kV, used for control and protection in industrial/mining enterprises, power plants and substations, and suited to frequent operation. Its operating mechanism is integrated with the breaker body as a fixed-mounted unit; the main circuit may use an integral solid-sealed pole for miniaturization, high reliability and maintenance-free operation, and it can be matched with XGN-series fixed switchgear.
Technical specifications
Headline ratings at a glance, followed by the full technical data sheet. Exact values are confirmed per project configuration.
| Parameter | Value |
|---|---|
| Rated / max voltage | 12 kV |
| Rated current | 630 – 4000 A |
| Short-circuit breaking current | 20·25 / 31.5 / 40 kA |
| Making & peak withstand (peak) | 50·63 / 80 / 100 kA |
| 4 s withstand current | 20·25 / 31.5 / 40 kA |
| PF / impulse withstand (earth · break) | 42·48 kV / 75·85 kV |
| Operating sequence | O–0.3s–CO–180s–CO |
| Mechanical life / fault interruptions | 20,000 / 50 ops |
| Closing & opening voltage | AC·DC 110 / 220 V |
| Contact gap / over-travel | 11±1 mm / 3.5±0.5 mm |
| Bounce time | ≤ 2 ms |
| Average opening / closing speed | 0.9–1.2 / 0.5–0.8 m/s |
| Opening time (max voltage) | ≤ 0.05 s |
Reading the model designation
Generated automatically from each product's model code.
Overall dimensions
Cabinet height, width and depth options. Selection depends on cable type and incoming / outgoing configuration.
| Item | Dimensions (mm) | Scope of application |
|---|---|---|
| Pole spacing | 210 / 275 | By rated current (mm) |
| Width W | 520 / 720 / 790 | By rating (mm) |
| Depth D | 440 / 445 | mm |
| Height H | 275 / 310 / 632 | By rating (mm) |
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