China Electrical Power Transformer manufacturer

ZW7 Outdoor High Voltage Vacuum Circuit Breaker

Product Details:
Place of Origin: China
Model Number: ZW7
Payment & Shipping Terms:
Minimum Order Quantity: 1
Price: 200-5000/piece
Packaging Details: wood
Delivery Time: 15 days
Payment Terms: LC T/T
Supply Ability: 20000 pieces/year
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Detail Information

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vcb circuit breaker


vacuum circuit switch

Product Description

Introduction info


ZW7-40.5 model outdoor high voltage vacuum circuit breaker was used to AC 50Hz, 40.5kV 3-phase electric system as breaking, linking load current, overload current and short current.


ZW7 Outdoor  High Voltage Vacuum Circuit Breaker 0


Normal service condition

Altitude ≤1000m
Ambient temperature Max +40℃
Min -15℃

Ambient humidity:

Maximum average humidity

24 hour ≤95%
1 month ≤90%
Maximum water vapor pressure 24 hours ≤2.2kpa
1 month ≤1.8kpa

The ambient air has no obvious pollution of dust smoke, corrosive or combustible gases, steams or smog



Technical Parameters


No. Specifications Unit Value
1 Rated Voltage kV 40.5
2 Rated current A 1600
3 Rated short-circuit breaking current kA 31.5
4 Rated short-circuit switching current (peak) 80
5 Rated short time withstand (thermal stability) current 31.5
6 Rated short time withstand (dynamic stability) current 80
7 Rated short-circuit duration time s 4
8 Rated insulating level Power frequency withstand voltage (1 min) Dry-type kV 95
Wet-type 80
Lightning impulse withstand voltage (peak) kV 185
9 Rated operating sequence   O-0.3s-CO-180s-CO
10 Breaking time of rated short-circuit breaking current Times 20
11 Breaking time (with spring operating mechanism) ms ≤80
12 Mechanical life times 10000
13 Rated operating voltage V AC220 DC220
14 Clearance between contacts mm 20+30
15 Over stroke of contacts mm 5±1
16 Bounce time ms ≤5
17 Loop DC resistance of each phase μΩ 120
18 Outline dimension of breaker (L*W*H) mm 2200*700*2500
19 Total weight of breaker (with operating mechanism) kg 1100


ZW7 Outdoor  High Voltage Vacuum Circuit Breaker 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.


ZW7 Outdoor  High Voltage Vacuum Circuit Breaker 2

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