24kV Indoor Side Mounted Vacuum Circuit Breaker with VSG Spring-operated Mechanism
The 24kV indoor side-mounted vacuum circuit breaker is an advanced protection and control unit designed for industrial, mining, and substation power systems. It features a reliable VSG spring-operated mechanism and high-performance embedded poles that protect the interrupter from dust, moisture, and collisions. With a maintenance-free design and high-grade electrical/mechanical life (E2/M2 level), this VCB is ideal for frequent operations and switching various load types in air-insulated indoor switchgear.
24kV Indoor Side Mounted Vacuum Circuit Breaker with VSG Mechanism
Product Overview
The 24kV indoor side-mounted vacuum circuit breaker is a high-performance protection and control unit designed for 24kV power systems. Equipped with a reliable VSG spring-operated mechanism, this breaker is ideal for switching various load types and frequent operations in industrial, mining, and substation environments. Its side-mounted design allows for seamless integration into air-insulated indoor switchgear.
Advanced Embedded Pole Technology
The main circuit of this 24kV VCB utilizes leading embedded pole technology:
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Total Protection: The vacuum interrupter and main circuit parts are fixedly sealed into a single unit, protecting them from collisions, dust, and condensation.
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Maintenance-Free: The embedded pole design, combined with a low-maintenance operating mechanism, significantly reduces operational costs and enhances service life.
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Environmental Adaptability: Features a strong ability to adapt to harsh environments, ensuring stable performance in diverse installation conditions.
Technical Specifications
| Item | Unit | Technical Data |
| Rated Voltage | kV | 24 |
| Rated Frequency | Hz | 50 |
| Rated Current | A | 630 / 1250 |
| Power Frequency Withstand Voltage (1min) | kV | 65 |
| Lightning Impulse Withstand Voltage (Peak) | kV | 125 |
| Rated Short-Circuit Breaking Current | kA | 25 / 31.5 |
| Mechanical Life | times | 10,000 (M2 Level) |
| Electrical Life | times | E2 Level |
| Rated Order of Operation | – | O-0.3s-CO-180s-CO |
Applying Ambient Conditions
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Ambient Temperature: Upper limit +40°C (24h average ≤35°C), Lower limit -15°C.
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Altitude: Not exceeding 1000m.
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Relative Humidity: Daily average ≤95%, Monthly average ≤90%.
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Water Vapor Pressure: Daily average ≤2.2kPa, Monthly average ≤1.8kPa.
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Environment: No obvious pollution by dust, smoke, corrosive/flammable gas, steam, or salt spray.
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