VS1-24 Indoor Withdrawable Vacuum Circuit Breaker with Embedded Poles (24kV)
The VS1-24 series withdrawable indoor vacuum circuit breaker is a premium power distribution unit rated for 24kV and 50Hz systems. It utilizes advanced embedded pole technology, which integrates the vacuum interrupter into a solid insulating cylinder to ensure maximum reliability and a maintenance-free service life. Engineered to meet M-E2-C2 capability grades, this VCB is the ideal protection component for KYN28-24 (GZS1) switchgear in power plants, substations, and industrial facilities.
VS1-24 Indoor High Voltage Withdrawable Type Vacuum Circuit Breaker (24kV)
Product Overview
The VS1-24 series withdrawable indoor vacuum circuit breaker is a premium three-phase AC 50Hz power distribution unit rated at 24kV. It is specifically engineered for the protection and control of electrical equipment in power plants, substations, and industrial mining enterprises. This high-performance breaker is optimized as a withdrawable component for KYN28-24 (GZS1) and similar medium-voltage switchgear.
Maintenance-Free & Long Service Life
Designed for reliability and longevity, the VS1-24 offers significant operational advantages:
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Embedded Pole Technology: The main circuit utilizes embedded poles, where the vacuum interrupter is sealed within a solid insulating structure. This protects against dust, moisture, and external damage, ensuring a maintenance-free experience.
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Exceptional Endurance: Reaches a capability grade of M-E2-C2, with a service life that can extend up to 20 years without major maintenance.
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Safe Operation: The arc is extinguished in a completely sealed container, preventing the exposure of hot gases and ensuring a high level of safety for personnel.
Technical Specifications
| Item | Unit | Technical Data |
| Rated Voltage | kV | 24 |
| Rated Current | A | 630 / 1250 / 1600 / 2000 / 2500 / 3150 |
| Power Frequency Withstand Voltage (1min) | kV | 65 |
| Lightning Impulse Withstand Voltage (Peak) | kV | 125 |
| Rated Short-Circuit Breaking Current | kA | 20 / 25 / 31.5 |
| Rated Short-Circuit Duration | s | 4 |
| Rated Operating Sequence | – | O-0.3s-CO-180s-CO |
| Maximum D.C. Component | % | 50% |
Key Features
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Small & Lightweight: The entire machine, including the operating mechanism, is compact and lightweight, making installation and debugging simple and convenient.
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Low Noise & Power: Requires minimal control power and produces very little noise during operation.
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Multiple Reclosing: Supports multiple reclosing functions, ideal for modern distribution network application requirements.
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Standards Compliant: Fully meets JB3855-96 and DL403-91 domestic standards, as well as relevant IEC provisions.
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