Our factory manufactures high-quality vacuum interrupter products that are designed to meet various industrial requirements. Trust us for reliable and efficient performance.
The vacuum interrupter uses the wave ceramic as insulating shell, the contact material is CuCr alloy, the longitudinal magnetic field cup structure, with high breaking capacity, high insulation level, strong arc extinguishing ability, long life, small size and easy maintenance, No explosion risk, no pollution, low noise and so on.
Main technical parameter
Value
Rated voltage
12kV
Rated current
630A
Rated frequency
50Hz
Rated short-time power frequency withstand voltage (1 min)
42kV
Rated lightning impulse withstand voltage
75kV
Rated short-time withstand current
20KA
Rated duration of short-circuit
4 s
Rated peak withstand current
50KA
Rated short-circuit making current （peak）
50kA
Rated active load breaking current
630A
Rated closed-loop breaking current
630A
Rated cable-charing breaking current
10A
Rated breaking current of single capacitor bank
400A
Circuit resistance at lowest rated contact force
≤45μΩ
Closing force due to bellow and atmosphere
70±40N
Force required to hold contacts open at full storke
120±40N
Contacts limit erosion
3mm
Mechanical endurance
10000 times
Weight of movable parts
≤0.6kg
Storage life
20 years
Mechanical Requirements Of Vacuum Circuit Breaker
MECHANICAL DATA RQUIRED FOR THE MATCHEDVACUUM SWITCHGEAR
Value
Clearance between opening contacts
8±1mm
Average opening speed
1.0±0.2 m/s
Average closing speed
0.6±0.2 m/s
Rated contacts pressure
900±500N
Contacts bouncing duration at closing operation
≤2ms
Synchronism of three phases
≤2ms
Contacts re-bouncing clearance at opening operation
The vacuum interrupter uses the wave ceramic as insulating shell, the contact material is CuCr alloy, the longitudinal magnetic field cup structure, with high breaking capacity, high insulation level, strong arc extinguishing ability, long life, small size and easy maintenance, No explosion risk, no pollution, low noise and so on. 
