Factory direct sale kema vde mcb 10KA rogy circuit breaker

a）Ambient air temperature

Considering that high ambient temperature accelerates the aging of plastic parts, the

upper limit shall not exceed +40℃

Considering the excessively low ambient temperature changes the fit of structural

parts, the lower limit value is generally not less than -5℃. Considering the service

life of the circuit breaker, the average value of 24 hours is not more than +35℃.

Note: ① The working conditions with the lower limit of -10℃ or -25℃ shall be

declared to the company when ordering.

② If the upper limit exceeds +40℃ or the lower limit is lower than -25℃, the user

shall negotiate with the company.

b)Installation location

The altitude is not more than 2000m;

Protection circuit requirements;

Short-circuit current Ik calculated at installation point is not more than 6000A;

 c)Atmospheric conditions:

The atmospheric relative humidity does not exceed 50% when the ambient air temperature is +40℃, and can have a higher relative humidity at lower temperatures. The monthly average maximum relative humidity in the wettest month is 90%, while the average minimum temperature in the month is +25℃ and the condensation on the product surface due to temperature changes.

d) Pollution level: Pollution level is III.

e) Installation category:

The installation category of Circuit Breaker protection circuit is Ⅲ

f)The traverse section is configured according to the maximum agreed heating current Ith of the circuit breaker.