China Electrical Power Transformer manufacturer

12KV Vacuum Circuit Breaker ZW8-12

Product Details:
Place of Origin: China
Model Number: ZW8-12 / 630-20
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: ZW8-12/630-20 Poles Number: 3
Rated Voltage: 12KV Mechanical Life: 10000 Times
Function: Voltage Surges Rated Current: 630/1250A
Closing Time: ≤60ms Opening Time: 20-60ms
High Light:

electrical vacuum breaker


vacuum circuit switch

Product Description

HengFengYouZW8-12/630-20 vcb three phase ac 50hz outdoor high voltage

vacuum circuit breaker


ZW8-12 series of high voltage outdoor switchgear is used in three-phase AC power

network of AC 50Hz, rated voltage 12KV for breaking and closing the rural network,

city network and load current ,overload current, short circuit current for small scale

power system. The overall structure of the product for the three-phase with whole

box-type, and using the SMC insulation materials , , and it has reliable performance,

high dielectric strength.

ZW8-12G is consist of ZW8-12 circuit breaker and isolation knife .and it is called

conbination of circuit breaker.and also can be used segment switch,The series of

ZW8-12,the mode of operation can be divided into manual and electric.



Item Description Unit Data
Item |Description |Unit 6.3KA/12.5KA/20KA
  Rated voltage |kv 12
|2 Rated current   630(1250)
  Rated short circuit breaking current KA 20/25/31.5
  Ratedshortcircuitmakingcurrent   16/31.5/50
  Rated peak withstand current KA 16/31..5/50
  |4SRatedwithstandcurrent KA 6.3/12.5/20
7 Ratedinsulationlevel frequencywithstandvoltage   42
Impulsewithstandvoltage 75
|8 Ratedoperatingsequence   0-0.3s-CO-180S-CO
  |Mechanicallife Times 10000
10 lRatedshortcircuitcurrentbreakingtime Times 30
1 Ratedclosebrakevoltageofoperatingmachnie   ACDC110,220
12 Ratedbreakbrakevoltageofoperatingmachnie M ACDC110,220
13 Contactstroke mm 11+1
14 Exceedrange(thecompresslengthofcontactsping) mm 3.5+0.5
15 Differentperiodofthree-phasebreakandclosebreak ms s2
16 Thejumptimeofcontactclosebreak ms s2
17 |Averagebreakspeed |m/s 0.9~1.5
18 lAverageclosingspeed |m/s 0.4~0.8
19 Closingtime | s 0.1
20 Contactslimitersion mm 3


12KV  Vacuum Circuit Breaker ZW8-12 0


Application and feature

It is equipped with CT23 type spring energy-stored operating mechanism. Energy-stored,

opening and closing can be achieved by motor or by manual.

Applying ambient conditions

Ambient temperature: The max, temperature should be+40 degrees. The mix. temperature

The height above sea level should be no higher han 1000m.

Wind preesure should be on more than 7000Pa it isequivalent to wind speed of 34m/s

The air filthy should be win in III degree. Frequently violent vibration should be forbidden.


12KV  Vacuum Circuit Breaker ZW8-12 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.


12KV  Vacuum Circuit Breaker ZW8-12 2

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