ZW32-12kV;630A Outdoor intelligent vacuum circuit breaker

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Serial number parameter name unit data
1 Rated voltage kV 12
2 Rated frequency Hz 50
3 Rated current A 630
4 Rated short-circuit breaking current kA 20
5 Rated peak withstand current kA 50
6 Rated short-time withstand current kA 20
7 Rated short-circuit making current (peak value) kA 50
8 Mechanical life times 10000
9 Rated short-circuit breaking current breaking times times 30
10 Power frequency withstand voltage (1min): (wet) (dry) phase to phase, to ground/fracture kV 42/48
11 Lightning impulse withstand voltage (peak) phase to phase, to ground/fracture kV 75/85
12 1min power frequency withstand voltage of secondary circuit kV 2



The ZW32-12F external high-voltage vacuum demarcation circuit breaker (watchdog switch) is an outdoor power distribution device with a rated voltage of 12KV, three-phase AC, and 50HZ. Circuit breakers are mainly used for breaking and closing load currents, overload currents and short circuits, quick-breaking, grounding protection, optional reclosing times, local remote control and remote communication in the power system. Suitable for substations and industrial and mining enterprises. Used for protection and control in electrical systems. ZW32-12F
Outdoor high-voltage vacuum demarcation circuit breaker (watchdog switch) (hereinafter referred to as circuit breaker), installed at the responsibility demarcation of the overhead line, that is, the front end of the user's incoming line, will automatically
Eliminate user single-phase grounding faults and phase-to-phase short-circuit faults, prevent user circle faults from spreading to the main transmission line, ensure the safety of electricity use by users without faults, and improve the reliability of electricity use.


The main function

a. Three-stage overcurrent protection
b. Reclosing control c. After acceleration function d. Zero sequence protection
e. Auxiliary function (switch on power on, switch off when power off)
f. Remote communication g. Nearby remote control


Use environmental conditions 

a. Ambient air temperature: -40V ~+40V i
b. Altitude: no more than 2000m;
c. The wind speed does not exceed 34m/s (equivalent to 700Pa on the cylindrical surface);
d. Pollution level: Level IV;
e. There is no frequent violent vibration, and the earthquake intensity does not exceed 8 degrees;
f. There is no place where there is fire, explosion, or chemical corrosion.


Shape and installation dimensions

Product model and meaning