Home / Products / Vacuum circuit breaker / Withdrawable Vacuum Circuit Breaker
This product is a new-generation, serialized 24kV indoor high-voltage withdrawable vacuum circuit breaker. The main current-carrying circuit mainly adopts an encapsulated-pole structure, with an optimized operating-mechanism design that greatly improves the breaker's insulation reliability, mechanical reliability, and breaking performance, forming a series of products to meet different usage requirements.
Advantages:
The encapsulated-pole structure gives the main circuit maintenance-free operating capability and a longer mechanical and electrical service life; the withdrawable design facilitates racking in and out for inspection and replacement, and combined with comprehensive interlocking devices ensures safe and reliable operation.
Applications:
Suitable for substations and industrial/mining distribution systems within 24kV power systems, undertaking the switching control of load current, overload current, and short-circuit current, particularly suited to applications with higher requirements for reliability and maintenance-free operation.
| Item | Unit | Parameter | |||
| Rated Voltage | kV | 24 | |||
| Rated Insulation Level |
1min Power Frequency Withstand Voltage (RMS) (Phase to Phase, Phase to Earth, Vacuum Interrupter) | kV | Phase to Phase, Phase to Earth / Break (or Interrupter) | 65/79 | |
| Lightning Impulse Withstand Voltage (Peak) (Phase to Phase, Phase to Earth, Vacuum Interrupter) | kV | 125/145 | |||
| Rated Frequency | Hz | 50 | |||
| Rated Current | A | 630 | 630 | 1600 | |
| 1250 | 1250 | 2000 | |||
| 2500 | |||||
| 3150 | |||||
| Rated Short-Circuit Breaking Current | kA | 20 | 25 | 31.5 | |
| Rated Short-Time (4s) Withstand Current | kA | 20 | 25 | 31.5 | |
| Rated Short-Circuit Making Current | kA | 50 | 63 | 80 | |
| Rated Peak Withstand Current | kA | 50 | 63 | 80 | |
| Rated Operating Sequence | O-0.3s-CO-180s-CO、O-180s-CO-180s-CO(40kA) | ||||
| Rated Number of Short-Circuit Breaking Operations | Times | 20 | |||
| Rated Cable Charging Breaking Current | A | 31.5 | |||
| Rated Single Capacitor Bank Breaking Current | A | 630 | |||
| Rated Back-to-Back Capacitor Bank Breaking Current | A | 400 | |||
| Mechanical Life | Times | 10000 | |||
| Allowable Accumulated Wear Thickness of Moving and Fixed Contacts | mm | 3 | |||
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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