40.5KV indoor high voltage vacuum circuit breaker （Actuator）35KV three - phase AC 50HZ applied to power system , the circuit breaker for the ceramic structure , using the longitudinal magnetic field contacts , is small , the proliferation of breaking arc generated when current distribution in the contact on the same local melting phenomenon does not occur , but also has a low arc energy voltage (20-200V) and low chopping current (4-5A), and operate with high reliability organizations .

 The circuit breaker with spring energy storage sector , can exchange energy storage , or DC operation , can also be used manually . The circuit breaker uses a special contact material , so interrupter high breaking capacity , and has a long electrical life .

 The switch of simple structure , open high capacity , long life operation of fully functional no explosion risk , maintenance is simple , suitable for power plants , substation control and distribution system , protection switching , particularly suitable for heavy duty and frequent breaking operation place .

Environmental conditions 

Ambient air temperature : upper limit +40℃. Lower limit -15℃ ;

Altitude : less than 1000m( for higher altitude , is rated insulation level increase );

Amplitude of vibration: the earthquake intensity is not more than 8 degrees ;

The daily average value of  air relative humidity is not greater than 95%, 

and the average monthly value is not greater than 90% ;

No Fire , explosion , danger , serious pollution , chemical corrosion and violent vibration .

Executive Standard 

GB1984 AC High Voltage circuit breaker

DL/T403 12~40.5KV Indoor AC high voltage circuit breaker ordering technical conditions
IEC60694

IEC6227-100