Factory Wholesale YUANKY Indoor Vacuum Circuit Breaker 12 KV 4000A with Modular Operating Mechanism

a. Ambient temperature should be within 10℃-+40℃(warehousing and transportation at-30C is permissible), b. Altitude not exceeds 2,000m; c. Relative humidity condition:daily average value should not exceed 95%, monthlyaverage value should not be over 90%;l be over 18 x10-2MPa, in high humidity period, condensation may be produced due to sharp temperature drop daily average value of saturated vapor pressureshould not exceed 2,2 x 10-3MPa, monthly average value should not d. Seismic intensity:not exceed Ms8; e. Locations far away from fire,explosion,serious pollution,chemical corrosion or severeshock