ZN63(VS1)-12 type indoor high-voltage vacuum circuit breaker, a three-phase AC 50Hz rated voltage of 12kV power system indoor switching equipment, as the power grid equipment, industrial and mining enterprises power equipment protection and control unit. Suitable for frequent operation at rated operating current, or multi-alternating short-circuit current.
The circuit breaker adopts the integrated design of the operating mechanism and the circuit breaker body, which can be used as a fi xed installation unit, and can also be equipped with a special propulsion mechanism to form a handcart unit.
ZN63(VS1)-12 type indoor high-voltage vacuum circuit breaker, a three-phase AC 50Hz rated voltage of 12kV power system indoor switching equipment, as the power grid equipment, industrial and mining enterprises power equipment protection and control unit. Suitable for frequent operation at rated operating current, or multi-alternating short-circuit current.
The circuit breaker adopts the integrated design of the operating mechanism and the circuit breaker body, which can be used as a fi xed installation unit, and can also be equipped with a special propulsion mechanism to form a handcart unit.
Model Meaning
VS
1
12
1
□
□
↓
↓
↓
↓
↓
Indoor high
voltage vacuum
circuit breaker
Product design serial number
Rated voltage (KV)
Rated current (A)
Rated short circuit breaking current(kA)
Main Technical Parameters
Item
Units
Argument
Rated voltage
kV
12
Rated insulation
level
Peak rated lightning impulse withstand voltage
kV
75
1min power frequency withstand voltage
42
Rated short-circuit breaking current
kA
20/25
31.5
40
Rated current
A
630、
1250
630、1250、
1600、2000、
2500、3150
630、1250、1600、2000、
2500、3150
Rated thermal stable current(RMS)
kA
20/25
31.5
40
Rated dynamic stable current (peak)
63
80
100
Rated short circuit closing current (peak)
63
80
100
Rated short circuit breaking current breaking times
Number of times
50
Secondary circuit power frequency withstand voltage (Imin)s
V
2000
Rated operating sequence
O-0.3-CO-180s-CO
O-180s-CO-180s-CO
Rated thermal stability time
S
4
Rated single/back-to-back capacitor bank breaking current
A
630/400800/400(40kA)
Mechanical life
Number of times
10000
External Mounting Dimension (mm)
Rated current(A)
630
1250
1600
Rated short circuit breaking current (A)
20/25
25/31.5
31.5
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