DOCA0095EN

Extreme Atmospheric Conditions

Circuit breakers are designed to operate in industrial atmospheres as defined in standard IEC/EN60947-2 for the highest level of pollution (level 3).

Circuit breakers are tested for extreme storage conditions and are compliant with the following standards:

Standard

Title

IEC60068-2-2

Dry heat, severity level +85 °C (+185 °F)

IEC60068-2-1

Dry cold, severity level –0 °C (–8 °F)

IEC60068-2-30

Damp heat:

  • Temperature +55 °C (+131 °F)

  • Relative humidity 95%

IEC60068-2-52

Salt mist, severity 2

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