CAM1 Moulded Case Circuit Breaker,mccb,circuit breaker box

1.  Electric ratings: AC 690V,50/60HZ, 10~1250A;
2.  Mounting mode: Vertical and horizontal;
3.  Standard: IEC/EN60947-2.


1)Temperature:-5oC~+40oC;the average value within 24h shall not exceed +35oC(pls contacts with us if temperature at the mounted site beyond above values) for the circuit breaker thermomagetic release,+40oC is set to be the standard temperature for rating.

2)Altitude:not exceed 2000m(Pls contact with us for reduction coefficient if altitude an the mounted site beyond 2000m)

3)Pollution degree: Grade 3

4)Air conditions:

At mounting site, relative humidity not exceed 50% at the max temperature of 40oC, higer relative humidity is allowable under lower temperature. For example, RH could be 90% at +20oC, special measures should be taken to occurance of dews.