Introduction:

The VBI series indoor vacuum circuit breaker is a new generation of intelligent vacuum circuit breakers. Its live components, including the high-performance vacuum interrupter and upper and lower outgoing terminals, are encapsulated in epoxy resin post terminals. This design helps prevent contamination on the surface of the vacuum interrupter, enhancing its insulation properties, mechanical stability, and extending its operational lifespan.

Main Technical Parameters:

• Rated frequency: 50-60Hz

• Rated current: 630A-4000A

• Phase distance: 210mm, 275mm

• Rated short-circuit breaking current: 20kA-40kA

• Installation method: Withdrawable or fixed, compatible with KYN28-12 (GZS1) switchgear, KYN44, and other central switchgear cabinets.

Application Environment:

• Ambient temperature: -40 ~ +40℃

• Altitude above sea level: ≤3000m

• Maximum wind speed: ≤35m/s

• Earthquake intensity: ≤8 degrees