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Ningbo Mingde Electrical Science&Technology Co.,Ltd
 
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Ningbo Mingde Electrical Science&Technology Co.,Ltd
[China]
Address:
151Huapeng Road Kandun Industrial Park,Cixi City,Zhejiang Province Ningbo Zhejiang 315030 China
Phone:
86-0574-63287923
Contact name:
Windy Song , International Sales
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Ningbo Mingde Electrical Science&Technology Co.,Ltd



 
Circuit Breaker

Circuit Breaker( Mechanical Life Over 60000 Times)

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Circuit Breaker( Mechanical Life Over 60000 Times)

Click to enlarge image

 Origin China
 Brand Name MINGDE
 name circuit breaker

ZN12-40.5Vacuum Circuit Breaker

This is our independent researching and developing products, have passed type approval test, moreover,it mechanical life over 60000 times,gets a national leading level.

Technical Parameter

 

Rated voltage: 40.5 kV

Rated current A 1250 1600 2000 1250 1600
Rated short breaking current kA 20                          25 31.5
Dynamic current kA 50                          63 80
3s thermal arrest current kA 20                          25 31.5
Rated short circuit making current(peak)  kA 50                          63 80
Breaking times at rated short-circuit current time 30 20
Rated operating order    
Rated lightning impulse withstand voltage kV 180
Frequency withstand voltage at short time(1min) kV 95
Making time ms ≦90
Breaking times  ms ≦75
Mechanical life time 20000 10000
Breaking times at rated  current time 20000 10000
Rated breaking current of  capacitor bank A 630
Power of energy stored motor W 275
Rated voltage of energy stored motor V 110V - 220V
energy stored time S ≦15
Rated voltage of making and tripping electromagnet V 110V - 220V
Rated current of overcurrent release A 5
Rated voltage of pilot switch A AC10A  DC5A




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