It can be formed with thermal relay and all kinds of protection apparatus like electromagnetic starter, especially applied to explosion electromagnetic starter and all sorts of power control equipment. It may be applied to mining departments, metallurgy, petroleum, chemical industry, power, communication transportations, shipping, and architecture fields.Applicable standards:1) National standard: B/T14048.1, GB14048.4, JB/T71222) National standard: IEC 60947-4-1Normal working and installation condition:1) Ambient temperature: -5~40°C2) Average temperature: ≤35°C in 24 hours3) Relative humidity: ≤50%, at max. 20°C (≤90%)4) Altitude: ≤2,000m5) Class of pollution: Class 36) Places without fire, explosion, corrosion and serious shake7) The inclined angle between the mounting surface and vertical surface: ≤15
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