Sontuoec Stfw-40 (ST225) Moulded Case Circuit Breaker New MCCB

Product DescriptionAmbient air temperatureThe ambient air temperature is about +40 ºC; the ambient air temperature is below -5ºC; the average value of ambient air temperature 24h is not more than +35ºC. Elevation: installation elevation of not more than 2000m. Atmospheric condition: Relative humidity of the atmosphere in the surrounding air temperature of +40ºC is less than 50%; the relative humidity at the lower temperature can be high; most of the wet month average maximum relative humidity of 90%, the monthly average minimum temperature of +25ºC and considering the temperature due to changes in product surface. Pollution grade: grade 3.   ed of current of release(A)Thermodynamic release (ambient temp+40ºCOperational current of magnetic release(A)1.05In(cold state) inoperative time(h)1.30In(heat state) inoperative time(h)In≤63≥1