The VS1-24(15) indoor high-voltage vacuum circuit breaker is suitable for 24(15) kV air-insulated indoor switchgear, serving as a protection and control unit for power grid equipment and industrial and mining power systems. Due to the unique advantages of vacuum circuit breakers, it is particularly well-suited for applications requiring frequent operations at rated current or multiple interruptions of short-circuit currents.
The circuit breaker features an integrated design combining the operating mechanism with the main body, allowing it to be installed either as a fixed unit or equipped with a dedicated trolley mechanism to form a withdrawable unit.
Main Parameters:
• Rated voltage: 24 kV (15 kV adaptable); frequency: 50 Hz
• Rated current: 630 A, 1250 A, 1600 A, 2000 A, 2500 A, 3150 A
• Rated short-circuit breaking current: 20/25/31.5 kA; 4 s thermal stability equal to breaking capacity
• Insulation level: Power frequency withstand voltage 65 kV/1 min; lightning impulse withstand 125 kV (peak)
• Mechanical life: 20,000 operations (M2 class); full capacity breaking ≥30 times
• Operating mechanism: Spring-operated (electric/manual); optional permanent magnet mechanism available
• Installation type: Trolley-mounted (medium-mounted switchgear) / Fixed
• Protection rating: IP4X; ambient conditions: -15°C to +40°C, altitude ≤1000 m
Structural Features:
1. Solidified pole/insulating cylinder design: vacuum arc extinguishing chamber combined with epoxy resin casting, composite insulation, pollution-resistant, maintenance-free
2. Integrated spring operating mechanism with screw drive, meeting the five-prevention interlocking requirements for switchgear
3. Compatible with cabinet types: KYN28-24 (GZS1) medium-mounted switchgear and XGN fixed-type switchgear
