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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

Vacuum interrupter JTD-12KV 1250A 20KA for vacuum circuit breaker VCB from JUCRO Electric
CategoriesVacuum Interrupter
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BrandJUCRO
ModelJTD-12KV 1250A 20KA
Unit PriceUS $ 78-79 / piece
FOB portShanghai/Ningbo
Terms of PaymentL/C, Western Union, MoneyGram, T/T
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Update Time2018-12-10
Detail Information

Vacuum 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 area
Workshop

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. 
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