A Vacuum Circuit Breaker (VCB) is a type of circuit breaker where the arc quenching occurs in a vacuum chamber. These breakers are highly reliable, maintenance-free, and ideal for medium-voltage power systems.
| Rated Voltage | Up to 36kV |
| Rated Current | Up to 2500A |
| Frequency | 50/60 Hz |
| Short-circuit Breaking Current | Up to 31.5kA |
| Lightning Impulse Withstand Level (LIWL) | Up to 170kVp |
| Short-circuit Making Current | Up to 65kA |
| Insulation Medium | Vacuum for fast arc quenching and dielectric insulation |
| Mechanical Life | Up to 100,000 operations |
| Design Type | Available in indoor and outdoor configurations |
| Standards | Conforms to IEC 62271-100, ANSI, and IS standards |
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