vacuum circuit breaker
item
unit
specification
Rated voltage
kV
12
Rated short-term frequency withstand voltage
kV
42
Rated lightning impulse withstand voltage
kV
75
Rated frequency
Hz
50
Rated current
A
630
630
1250
1250 1600
Rated short-circuit break current
kA
20
25
31.5
Rated short-term withstand current
kA
20
25
31.5
Rated short-circuit break and close current
kA
50
63
80
Rated short-circuit current lasting time
s
4
Rated short-circuit break and close time
t
50
Rated operation order
O-0.3s-CO-180s-CO
Close time
ms
¡Ü70
Break time
ms
¡Ü50
Rated storage operation voltage
V
220/110
Storage time
s
¡Ü10
Mechanical life
t
¡Ý10000
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