China Electrical Power Transformer manufacturer

Outdoor Column 12KV Manual Circuit Breaker High Voltage 10000 Times Mechanical Life

Product Details:
Place of Origin: China
Payment & Shipping Terms:
Minimum Order Quantity: 1
Price: 200-5000/piece
Packaging Details: wooden case
Delivery Time: 15 days
Payment Terms: LC T/T
Supply Ability: 20000 pieces/year
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Detail Information

Model Number: Zw20-12 / 630-25KA Poles Number: 3
Rated Voltage: 12KV Mechanical Life: 10000 Times
Rated Current: 630A Rated Short Circuit Breaking Current: 20A
Frequency: AC 50/60 Hz
High Light:

electrical vacuum breaker


vacuum circuit switch

Product Description

Hengfengyou zw20-12 / 630-25KA outdoor column High Voltage Vacuum Circuit

Breaker 12KV manual circuit breaker



ZW20A-12 Type of outdoor high voltage vacuum circuit breaker for a period of 12KV, rated voltage

of the three-phase AC 50HZ outdoor distribution equipment. It adopts vacuum arcing and SF6 gas

as insulating medium is ZW20-12 column type vacuum circuit breaker on the modified products.
The product suitable for substation industrial and mining establishments rural power network and

occasions with frequent operation to protect and control. ZW20A outdoor AC high voltage vacuum

circuit breaker is mainly used to break and close load current, over-load current and short-circuit

current in outdoor 36kv three-phase alternating current 50Hz power system, also suitable for occasion

with frequent operations.


Service conditions:

1. Ambient Temperature: -40℃ ~ +40℃

2. Altitude: ≤2000m

3. Wind speed: ≤34m/s

4. Earthquake intensity: ≤8

5. Relative humidity: daily≤95%, month≤90%

6. Installation site: Not including inflammable, explosive, chemical corrosion.


Item Unit Numeric  
NominalVoltage KV 12  
RatedFrequency HZ 50  
RatedCurrent A 630  
RatedShort-circuitBreakingCurrent KA 20
DynamicStabilityratedcurrent KA 50  
RMS/Ratedthermalstabilization KAIS 20/4
Mechanismlife Times 10000  
Ratedshort-circuitclosingbreakingNumber Times 30



Ratedbreakingcurrentnumber Tmes
Ratedshort-circuitcloseopencurrent KA 50    
Ratedinsulationlevel KV  





PE 42/34 75
PP 42/34 75
Fracture 48/34 35
SF6ratedpressure(20spendpressure) MPa 0.01    
Ratedshort-circuitclosingbreakingNumber   30    
Ratedshort-circuitcut-offcurrent'sDCcomponent %dc 513  


Outdoor Column 12KV Manual Circuit Breaker High Voltage 10000 Times Mechanical Life 0




Snapped vacuum interrupter,air insulated,with electric spring operating mechanism,allowing

breaking the ability strong,high frequency short-circuit breaking,no fire and explosion hazards,

easy operation is an excellent,practical,strong product.

The product structure using three-phase common tank type,casing into the outlet,cabinets dry

air,electric spring mechanism is disposed on the side of the box,can be used under relatively

harsh environmental conditions.

This product is vacuum interrupter ceramic shell,goblet longitudinal magnetic field electrode

structure,copper-chromium contact materials,with excellent breaking and closing short-circuit

current capability.

The product is small,light weight,becautiful apperance.vacuum interrupter ans insulation support

sleeve design compact,pole qualifying conductive silicone rubber outer note,can adapt to harsh

weather confitions and dirty environmrnts.

Outdoor Column 12KV Manual Circuit Breaker High Voltage 10000 Times Mechanical Life 1



About us


Qingdao Hengfengyou Electrical Engineering Co. , Ltd. is one of the large-scale electric complete

sets of manufacturers in China, specializing in oil-immersed transformers, dry-type transformers,

high-voltage Cabinets, low-voltage cabinets and substation manufacturing specialized electrical

enterprises. The company is located in the beautiful coastal city of china-qingdao. The company

has a registered capital of 10 million yuan, 20 senior technical personnel, more than 500 employees,

and a sound sales and service system, annual output value of US $1 billion, the products sell well

at home and abroad.


Outdoor Column 12KV Manual Circuit Breaker High Voltage 10000 Times Mechanical Life 2

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