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Wenzhou Kangda Complete Electric Equipment Co., Ltd.

Circuit Breaker, Vacuum Circuit Breaker, W20A-12 manufacturer / supplier in China, offering Zw20-12 Outdoor High Voltage Vacuum Circuit Breaker, Zbw Combined Transformer Substation, XL-21 Power Switchgear Distribution Cabinet and so on.

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Supplier Homepage Product Circuit Breaker Zw20-12 Outdoor High Voltage Vacuum Circuit Breaker

Zw20-12 Outdoor High Voltage Vacuum Circuit Breaker

FOB Price: Get Latest Price
Min. Order: 1 Unit (s)
Production Capacity: 5000
Transport Package: Wooden Carton
Payment Terms: L/C, T/T

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Basic Info
  • Model NO.: ZW20-12
  • Operation: Manual Type
  • Arc-extinguishing Medium: Vacuum
  • Structure: ACB
  • Type: Circuit Breaker
  • Certification: ISO9001-2000, CE, CB, CCC
  • Breaking Capacity: High Voltage Circuit Breakers
  • Speed: Normal Type Circuit Breaker
  • Installation: Open Frame
  • Poles Number: 3
  • Function: Conventional Circuit Breaker
  • Origin: Z
Product Description

ZW20-12  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 W20-12 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.

ZW20A-12 series outdoor AC vacuum circuit breaker is rated voltage 12KV, three-phase AC 50Hz outdoor high voltage switchgear. Mainly used for breaking, closing load current power system, overload current and short circuit current. 

Service conditions:
1. Ambient Temperature: -40ºC ~ +40ºC
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.

Technical parameters:
1Rated voltagekV12
2Rated frequencyHz50
3Rated currentA630,1000
4Rated short circuit breaking currentkA12.5, 16, 20, 25
5Rated peak withstand current (peak)kA31.5, 40, 50, 63
6Rated short time withstand current (4s)kA12.5, 16, 20, 25
7Rated short-circuit current (peak)kA31.5, 40, 50, 63
8Mechanical life timestime10000
9Rated short-circuit breaking current breaking timestime30
101 min power frequency withstand voltage (phase to earth / fracture)kV42/48
11Peak lightning impulse withstand voltage (phase to earth / fracture)kV75/85
12Secondary circuit power frequency withstand voltage 1 minkV2
13Net weightkg140
14Rated SF6 gas pressure (gauge pressure)Mpa"0"

Product Structure

basic configuration

1. The current transformer protection level 2

2. The spring mechanism 220V

3. To avoid the surge means

Optional equipment

1. The current transformer metering Level 3, 200/5 and above

2. External voltage transformer 2 (control power and metering)

3. coincide with the controller and a variety of FTU, RTU configuration uses

Ordering Information

1. Product model name and number

2. The transformer ratio and accuracy grade

3. The quantity and delivery time

4. The name of spare parts, the number of


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