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Vacuum interrupter JTD 12KV 1250A 20KA for vacuum circuit breaker VCB from JUCRO Electric
Vacuum interrupter JTD 12KV 1250A 20KA for vacuum circuit breaker VCB from JUCRO Electric
Categories Vacuum Interrupter Album View larger image Brand JUCRO Model JTD 12KV 1250A 20KA Unit Price US $ 79 / piece FOB port Shanghai/Ningbo Terms of Payment L/C, Western Union, MoneyGram, T/T Download DOC 
Update Time 2020-10-24 Detail InformationVacuum interrupter JTD 12KV 1250A 20KA for vacuum circuit breaker VCB from JUCRO Electric
Vacuum Interrupters accept customized order according to technical drawing or samples.The vacuum interrupter use 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.Detailed Image
Main technical parameters
Items
Value
Rated voltage
12kV
Rated current
1250A
Rated frequency
50Hz
Rated power frequency withstand voltage (1 min)
42kV
Rated lightning impulse withstand voltage
75kV
Rated short circuit breaking current
20KA
Rated short circuit making current(peak value)
50KA
Breaking operations under rated short circuit breaking current
30 times
Rated short time withstand current
20kA
Rated withstand current(peak value)
50kA
Rated duration of short circuit
4s
Mechanical life
20000 times
Closing force due to bellows and atmosphere
70±40N
Force required to hold contacts opening at full stroke
120±50N
Circuit resistance at lowest rated contacts force
≤35μΩ
Storage life
20 years
Limiting abrasion of contacts
3mm
Weight of moveable parts
≤0.7kg
Mechanical requiements of vacuum circuit breaker
Items
Value
Clearance between opening contacts
7±1mm
Average opening speed
1.0±0.25 m/s
Average closing speed
0.65±0.15 m/s
Rated contacts pressure
1600±100N
Contacts bouncing duration at closing operation
≤2ms
Contacts re-bouncing clearance at opening operation
≤2mm
Synchronism of three phases
≤1ms
Packing & Delivery
Strong package, Safety first.
Inside with foam to support the product, put it in carton or wooden box, fixed it on pallet.
As long as possible to keep the products safe until it arriving customer's warehouse.
Clearly marking label outside of package, customers will be easy to identify their goods.Our Company
20000 M2 of JUCRO Electric company land
1500 M2 of office building
5000 M2 of workshop building
Inside of JUCRO Electric office building
Inside of JUCRO Electric office building
JUCRO Electric office work areaWorkshop
Vacuum Interrupter Workshop
Accept customized order.
Design the Vacuum Interrupter for you.
VCB Production Line
VCB Vacuum Circuit Breaker production Line.
VCB Production Line
VCB Vacuum Circuit Breaker production line, Engineers routine inspection.Quality Inspection
Carefully inspection of each product, Quality guaranteed
completely data records of entire process , all the product data can be traced.Related ProductsPlease send your message to usProfessional production line solution provider！
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