Overview of indoor vacuum circuit breaker(vcb breaker):

Application: in 40.5kV power distribution system for control and protection. 
Standards: IEC 62271-100

Parameters:    Rated voltage: 40.5kV.  
                           Rated current: 630-2000A.
                           Rated short-circuit breaking current: 20-31.5kA.

Features:         1.High insulation level and breaking capacity.
                          2.Compact and modular deign.
                          3.Less maintenance.
                          4.High operation endurance.
                          5.Applicable to various working conditions

Type and interpretation:

ZN85-40.5/T 口-口

Z   ----Vacuum circuit breaker

N   ----Indoor

85  ----Design number

40.5 ----Rated voltage(kV)

T      ----Spring operating mechanism

口    ----Rated current(A)

口    ----Rated short-circuit breaking current (kA)

Working Condition of vcb breaker:

Ambient air temperature: +15~+40°C

Altitudes:≤1000m

No operating in such places as subject to dust,smog,corrosive/flammable gas,vapor and salt pollution.

Humidity: Daily average value ≤95%

                Monthly average value ≤90%

Water vapor pressure: Daily average value ≤2.2kPa

                                     Monthly average value ≤1.8kPa

The external shocking and earthquake could be neglected.

The amplitude of electromagnetic interference in the secondary system ≤1.6kV.

Note:

Customized products for other special working conditions are available on your requirements.

We have developed products suitbable for high altitude.

Main Techincal Parameters of indoor vacuum circuit breaker(vcb breaker):

Drawing: