ZN12-40.5 three-phase indoor circuit breakerThe mechanism of this VCB is designed as a whole with vacuum interrupter. Specialized 3AFtype spring operating structure from Siemens can be operated by manual or carry out directcurrent energy saving operation. It’s can be designed as 350mm,400mm,460mm and other kindsof phase space, which matches better with different kinds of switchgear, such as fixed typeXGN17-40.5,type JYN1-40.5,KY10-40.5.Ambient condition1 Ambient temperature: max +40°C min -15°C(conveyance under -30°C is allowed)2 Altitude: ≤1000m3 Relative humidity: daily average relative humidity: ≤95%; monthly average relativehumidity≤90%, daily average saturated vapor pressure ≤2.2*10-3 MPa,monthly averagevalue ≤1.8*10-3 MPa4 Earthquake intensity: ≤8 degree5 The installation should be free from fire, explosion, severe vibration, chemical corrosion andserious pollutionOrder instructionComplete model and order quantity of the productRated current, rated voltage, distance of each polesRated short circuit breaking current, operation voltageRequired accessory and quantityOther requirement please contact with us directly

ZN12-40.5 three-phase indoor circuit breaker