MV Components
SF₆ Gas Insulated Circuit Breaker
Medium-voltage circuit breaker with SF₆ as the interrupting medium. M1/E2 endurance classes, peak withstand up to 50 kA.
12–36 kV630–1250 AM1 / E2
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The SF₆ circuit breakers are used in switchgear cells for switching load currents and interrupting short-circuit currents. Fast arc quenching in SF₆ ensures minimal contact wear and easy maintenance.
Technical Specifications
| Parameter | 12–24 kV | 36 kV |
|---|---|---|
| Rated voltage | 12/24 kV | 36 kV |
| Rated current | 630–1250 A | 630–1250 A |
| Lightning impulse withstand voltage | 125 kV | 170 kV |
| Power frequency withstand voltage | 50 kV | 70 kV |
| Short-circuit withstand current (3 s) | 16–20 kA | 16–20 kA |
| Rated peak short-circuit withstand | 40–50 kA | 40–50 kA |
| Mechanical endurance class | M1 | M1 |
| Electrical endurance class | E2 | E2 |
| Interrupting medium | SF₆ | SF₆ |
