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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.

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

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

1.Installation way: pole mounted;
2.Operating mechanism: spring operating mechanism and permanent magnetic operating mechanism;
3.Pole type: integrated pole;
4.Application: outdoor 24kV substation, power plant.
5.Operation type: manual, electric, remote control.

1.Ambient temperature: -35°C ~ +45°C;
2.Altitude: ≤1000m;
3.Wind speed ≤ 35m/s;
4.Earthquake intensity: ≤8 level;
5.Filthy level: IV;

1.Installation way: foundation installation;
2.Operating mechanism: spring operating mechanism and electromagnetic operating mechanism;
3.Pole material: rubber silicone, ceramic;
4.Application: outdoor 33kV substation, power plant.
5.Current transformer: internal installation, external installation.

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.

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.

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.

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;

for a period of 12 KV, rated voltage of the three-phase ac 50 HZ outdoor power distribution system. 
It uses a vacuum arcing and SF6 gas as insulating medium, 
is ZW20-12 type vacuum circuit breaker of the improvement of products. 
Cabinet adopted the introduction of Japanese Toshiba VSP5 gas seal technology, explosion-proof, insulating structure

is applied for breaking, on Or off of load current in AC three-phase power system of rated 10-12kV with 50/60Hz, 
it owns functions of overload and short protection, fast breaking protection, time lapse delay and automatic reclosing ,
it can also be equipped with arrester Or disconnecting (circuit breaker and disconnecting switch combination, 
hereinafter called combination intelligent circuit breakers) according to customer' s requirement.