KENJING SF6 Vacuum Circuit Breaker Switch — 24kV, 630A

The KENJING SF6 Vacuum Circuit Breaker Switch is a vacuum circuit breaker built for dependable MV fault clearing at 24 kV. It combines a sealed SF₆-insulated pole with a vacuum interrupter to deliver fast arc extinction, high dielectric strength, and low maintenance. This medium voltage vacuum circuit breaker suits RMUs, metal-enclosed switchgear, feeders, and transformer incomers requiring compact design and proven reliability under repetitive duty.

Key Features and Advantages

• Primary ratings: 24 kV, 630 A vacuum circuit breaker with ≤ 60 µΩ main-circuit resistance for low thermal rise and efficient conduction.

• Interrupting & withstand: Rated breaking current 20 kA (4 s thermal stability); short-circuit making/peak 50/63 kA, 30 making operations—robust electrodynamic strength for bus ties and transformer feeders.

• Dielectric performance: Power-frequency withstand 65 kV (phase-ground/phase-phase), 79 kV (open contact); lightning impulse 125 kV (phase-ground/phase-phase), 145 kV (open contact)—secure insulation margins for MV systems.

• Endurance: 10,000 operations for the arc-chamber mechanism; 5,000 for the isolation/grounding switch—ideal for networks where the vacuum circuit breaker sees frequent switching.

• Application fit: Optimized for GIS/RMU and indoor metal-enclosed assemblies; accessory options include motor charging, anti-pump, aux contacts, mechanical/electrical interlocks, and protection relay interfaces to finalize your vacuum circuit breaker specifications.

• Safety & maintenance: Vacuum interruption eliminates decomposition by-products; sealed SF₆ housing improves ingress protection and service life while keeping the vacuum circuit breaker footprint compact.

Why Choose Us (KENJING)

• Engineer-led sizing: Our power engineers configure the vacuum circuit breaker to your fault levels, protection settings, and coordination study.

• Quality assurance: Each vacuum circuit breaker undergoes routine dielectric, timing, and mechanical tests with full traceability.

• Lifecycle support: Spares, retrofit kits, FAT/SAT assistance, and documentation ensure your vacuum circuit breaker fleet runs reliably with predictable maintenance.

Specify a KENJING vacuum circuit breaker with confidence. Send your single-line and protection requirements, and our team will return drawings, pricing, and delivery for a 24 kV medium voltage vacuum circuit breaker that matches your project.