Home / Products / Vacuum circuit breaker / High-Voltage Vacuum Circuit Breaker (Fixed-Type)
This product is an indoor high-voltage vacuum circuit breaker rated at 40.5kV, three-phase AC 50Hz, with a fixed-mounting structure, used by industrial/mining enterprises, power plants, and substations for switching load current, overload current, and short-circuit current, and is suitable for frequent-operation applications.
Features:
The fixed structure is compact and simple to assemble, delivering stable and reliable operation; the vacuum interrupter offers excellent breaking capability and insulation performance, able to withstand frequent operation and repeated interruption of short-circuit current over the long term, reducing the equipment failure rate.
Applications:
Suitable for the high-voltage distribution systems of power plants, substations, and various industrial/mining enterprises, undertaking circuit protection, load control, and short-circuit fault clearance, serving as an ideal core component for fixed-type high-voltage switchgear.
| Item | Unit | Parameter | ||
| Rated Voltage | kV | 40.5 | ||
| Rated Current | A | 1250 1600 2000 | ||
| Rated Frequency | Hz | 50 | ||
| Rated Short-Circuit Breaking Current | kA | 25 | 31.5 | |
| Rated Short-Circuit Making Current (Peak) | kA | 63 | 80 | |
| 4s Rated Short-Time Withstand Current | kA | 25 | 31.5 | |
| Rated Peak Withstand Current | kA | 63 | 80 | |
| 1min Power Frequency Withstand Voltage | kV | 95 | ||
| Lightning Impulse Withstand Voltage (Peak) | kV | 185 | ||
| Rated Operating Sequence | O-0.3s-CO-180s-CO | |||
| Rated Number of Short-Circuit Breaking Operations | Times | 20 | ||
| Mechanical Life | Times | 10000 | ||
| Breaking Time | ms | ≤ 80 | ||
| Single Capacitor Bank Breaking Current | A | 630 | ||
| Back-to-Back Capacitor Bank Breaking Current | A | 400 | ||
| Rated Operating Voltage | V | -110/~110, -220/~220 | ||
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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1948056561@qq.com
+86-0577-62716681
+86-15867777538
Building 5, No. 88, Zhandong Road, Dianhou Industrial Zone, Liushi Town, Yueqing City, Wenzhou, Zhejiang Province, China
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