Environmental Temperature: The ambient temperature should not exceed 40°C. The average value measured within 24 hours should not exceed 35°C, and the average value measured within one year should be lower than this value. The minimum ambient air temperature is -5°C.
Atmospheric Conditions: The air is clean. When the maximum temperature is 40°C, the relative humidity should not exceed 50%. Higher relative humidity is allowed at lower temperatures. For example, at 20°C, the relative humidity can reach up to 90%. Measures must be taken to deal with the condensation on the product body caused by temperature changes.
Pollution Degree: Level 3
Installation Category: Category III
Installation Conditions: The fuse should be installed in a place without significant shaking, impact or vibration. 
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