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Scope of application
DZ20 series moulder case circuit breaker (short for breaker) is used to in circuit with AC 50Hz, rated current from 16A to 630A, rated isolation voltage is 660V, rated working voltage under 380V(400V) for change and start not frequently. The breaker has protection functions of over load, short circuit and under voltage to portect circuit and equipment from damage.

Work conditions
Height above sea level under 2000m;
Ambient temperature from -5° C+40° C, and average temperature less than 35° C(except for peculiar products)
Relative humidity is not more than 50%in +40° C. It can be higher in low temperature. And the lowest temperature can not be less than +25° C in the most humid month. I this month, average relative humidity can not be more than 90%, considering bead produced by temperature change.
Class of pollution: 3;
Main circuit installation class: 3. Auxiliary circuit installation class: 2;
No explosion hazard, corrosive gas and conductive dust;
No rain or snow;
Install breaker according to operation instruction.
Rated current :16A~630A.