VS9-24 series embedded poles type high-voltage vacuum breaker 1.24kV,630A,1250A 2.long life,reliable 3.passed test,ISO GVS9-24 series embedded poles type high-voltage vacuum breaker ,apply for rated voltage 24kV, frequency 50Hz three-phase AC power system, widely used in power plants, transformer substation, petrochemical, metallurgical, manufacturing, airport And communities , use for electrical ...