Vacuum contactors are mainly used in the power systems with AC 50Hz and rated voltage 6kV or 10kV, for making or breaking circuit and electromagnetic starter with suitable protective devices and F-C case.
Ambient conditions:
1) Altitude above sea should not be over 1,000m
2) Ambient temperature is -5~40°C
3) Average temperature in 24 hours limited below 35°C
4) When the highest temperature is 40°C, the relative humidity should not
be higher than 50%
5) Pollution degree: class 3
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