Fixed-Type Vacuum Circuit Breaker (with Aviation Connector)

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VS1-12

Fixed-Type Vacuum Circuit Breaker (with Aviation Connector)

This product is an indoor AC high-voltage vacuum circuit breaker fitted with an aviation-plug connector, rated for 12kV, 50Hz three-phase power systems. It complies with the relevant national and industry standard requirements, and can operate safely and reliably on the corresponding voltage-class grid within its rated technical parameters.

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Features:
The aviation-connector interface allows quick plug-in and removal of secondary control cables, reducing on-site wiring workload and improving installation and maintenance efficiency; the vacuum interrupter offers excellent breaking performance and high insulation reliability, with a long mechanical service life that meets the requirements of frequent switching operations.


Applications:
Widely used in indoor metal-clad, air-insulated switchgear, serving as a protection and control unit for grid equipment and industrial/mining power distribution systems, particularly suited to power supply and distribution scenarios requiring frequent operation at rated current or repeated interruption of short-circuit current.

Item Unit Parameter
Rated Voltage kV 12
Rated Frequency Hz 50
Rated Power Frequency Withstand Voltage (1min) kV 42
Rated Lightning Impulse Withstand Voltage (Peak) kV 75
Rated Current A 630 630 630 1250 1250
1250 1250 1250 1600 1600
1600 1600 1600 2000 2000
2000 2500 2500
2500 3150 3150
3150 4000 4000
Rated Short-Circuit Breaking Current kA 20 25 31.5 40 50
Rated Short-Time Withstand Current 20 25 31.5 40 50
Rated Peak Withstand Current 50 63 80 100 125
Rated Short-Circuit Making Current (Peak) 50 63 80 100 125
Rated Dynamic Withstand Current 50 63 80 100 125
Rated Single / Back-to-Back Capacitor Bank Breaking Current A 630/400
Rated Short-Circuit Current Duration s 4
Rated Number of Short-Circuit Breaking Operations Times 50 (30 for 40kA and above)
Breaking Time / Arcing Time ms ≤ 100/ ≤ 15
Rated Operating Sequence for Auto-Reclosing O - 0.3s - CO - 180s - CO
Rated Operating Voltage v AC 110/220 DC 110/220
Percentage DC Component of Rated Short-Circuit Breaking Current % ≤ 40
Mechanical Life Times 10000

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About Liyuan

Zhejiang Yingchuang Electric Co., Ltd. was established in March 2018 and is a qualified approved supplier for State Grid and China Southern Power Grid. We specialize in the R&D and manufacturing of high-voltage electrical equipment, including primary-and-secondary integrated pole-mounted circuit breakers, indoor/outdoor vacuum circuit breakers, disconnecting switches, ring main units, and complete switchgear assemblies. Guided by "craftsmanship quality and sincere service," we offer full OEM/ODM customization across our entire product range. In 2024, we were recognized as a Provincial Innovative SME and a National High-Tech Enterprise. 

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