The vacuum circuit breaker is indoor switchgear components insulated by air. Under normal conditions of use, it can operate safely and reliably under the corresponding voltage level of the grid, as long as the range of the technical parameters of the circuit breaker. VS1 vacuum circuit breaker is suitable for reclosing operation, and it can operate frequently or break repeatedly in the current range of the work. What’s more, its mechanical life is up to 10,000 times, and its full capacity short-circuit current breaking times is up to 50 times. The installation forms of VS1 vacuum circuit breaker in the switchboard can be either fixed or drawable, and it can also be installed on the frame.

Overall dimensions

Technical parameters

NO. Item Unit Value
1 Rated voltage kV 12
2 Rated current A 630,1250,1600,2000,2500,3150
3 Rated frequency Hz 50
4 power frequency withstand voltage(1min) kV 42
5 Lightning impulse withstand voltage kV 75
6 Rated short circuit breaking current kA 20,25,31,5,40
7 Rated peak withstand current kA 50,63,80,100
8 Rated short circuit making current kA 50,63,80,100
9 Rated short time withstand current kA 20,25,31,5,40
10 Rated duration of short circuit S 4
11 Rated single/ back to back capacitor bank breaking current A 630/400(40KA-800/400)
12 Rated capacitance switching surge kA 12.5(≤1000HZ)
13 Rated operating sequence  Auto reclosing:O-0.3S-OC-180S-OC
 No auto reclosing:O-180S-CO-180S-OC
14 Rated supply voltage of closing mechanism V DC(AC)220(110)

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