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VH4-EP
VH4 series vacuum circuit breaker is indoor switchgear for 12kV electric power system, works as protection and control unit for power grid equipment, power equipment in industrial and mining enterprises, it is a new generation high quality vacuum circuit breaker developed by Beijing Huadong Senyuan Electric Co., Ltd. specifically for nuclear power project, outline installation dimension is completely the same as that of VS1 vacuum circuit breaker, may work with KYN28A-12 switch cabinet easily. Main circuit of circuit breaker may adopt fixed sealing type arc quenching chamber pole (pole that adopts special technique to envelop vacuum arc quenching chamber and conductive connecting piece using epoxy resin) made by Siemens, and may also adopt open type arc quenching chamber pole made by our company, mechanism adopts long life spring operating mechanism made by our company, they constitute vacuum circuit breaker of superior property through optimally designed drive system. This vacuum circuit breaker has high parameter standard: breaking times at rated short circuit current is 50 times, direct component is above 70%, peak withstand, closing current is three times of rated short circuit current, mechanical life is 50000 times.
vacuum circuit breaker
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