Indoor High Voltage Vacuum Circuit Breaker

ZN23-40.5 series handcart type indoor vacuum circuit breaker for the high voltage rated 40.5kv,
three-phase AC 50Hz Indoor high-voltage electrical equipment. 
Apply to industrial and mining e r1terp rises , 
substation and transmission and distribution systems for control and protection switching;

ZN28G ZN28A-12 series indoor vacuum circuit breaker is a three-phase AC 50Hz,rated voltage of 12kV indoor witchgear ,
control and protection for industrial and mining enterprise,
power plants and substations,electrical acilities,
and for frequent operation place.

VS1-12 side-mounted type vacuum circuit breaker is a kind of indoor high voltage switch device which is used in the AC Three-phase power system of frequency 50HZ,rated voltage 12KV to be the protection and control unit. 
Because of the special superiority of vacuum circuit breaker, especially suitable for applications that require frequent operation at rated operating Current or multiple open short-circuit breaking current location.

1. IEC62271-100 High Voltage Switchgear and Controlgear Part 100: AC Circuit-breakers
2. GB1984 High Voltage AC Circuit-breakers
3. GB/T11022 Common Specifications for High-voltage Switchgear and Controlgear Standards
4. JB/T 3855 High Voltage AC Vacuum Circuit-breakers
5. DL/T402 Specification of High-voltage AC Circuit-breakers

ZN85-40.5 Indoor High Voltage Vacuum Circuit Breaker
Summary
ZN85-40.5 indoor HV vacuum circuit breaker is a 3-phase AC 50Hz 40.5kV indoor

VS1-12 side-mounted type vacuum circuit breaker is a kind of indoor high voltage switch device which is used in the AC Three-phase power system of frequency 50HZ,rated voltage 12KV to be the protection and control unit. 
Because of the special superiority of vacuum circuit breaker, especially suitable for applications that require frequent operation at rated operating Current or multiple open short-circuit breaking current location. 
It 1s especially suitable to the place requiring frequent operations.

1. Ambient temperature: -15℃~+40℃;
2. Altitude: ≤1000m;
3. Relative humidity: daily average ≤95%, monthly average ≤90%；
4. Earthquake intensity: ≤8 level;
5. Places without fire, explosion hazard, serious filthy, chemical corrosion, as well as intense Vibration.