Summary

CM1E series electronic plastic case circuit breaker (hereinafter referred to as circuit breaker) is suitable for AC 50 Hz / 60 Hz, with rated insulation voltage of 800 V, rated working voltage of 690 V and below, rated working current of 16 ~ 800 a for infrequent switching and motor starting. The circuit breaker has the functions of overload long time delay inverse time limit, short circuit short time delay inverse time limit, short circuit short time delay definite time limit, short circuit instantaneous and under voltage protection, residual current protection (optional) and open phase protection (optional), which can protect the line and power supply equipment from damage. The circuit breaker has complete protection characteristics, can improve power supply reliability and avoid unnecessary power failure.

According to its rated limit short-circuit breaking capacity, circuit breakers can be divided into M-type (higher breaking type) and H-type (high breaking type).

The circuit breaker has the characteristics of small volume, high breaking capacity, short flashover and anti vibration. The circuit breaker shall be installed vertically.

The circuit breaker has isolation function, and its corresponding symbol is "".

The circuit breaker can not reverse the incoming line, that is, only 1, 3 and 5 are allowed to connect to the power line, and 2, 4 and 6 are allowed to connect to the load line.

Normal working conditions

Altitude: ≤ 2000m;

Environmental temperature: - 5 ℃ ~ + 40 ℃, and the average value within 24 hours is no more than + 35 ℃;

It can withstand the influence of humid air;

It can withstand the influence of salt fog and oil fog;

The installation category of main circuit of circuit breaker is III, and the installation category of other auxiliary circuits and control circuits is II;

When the temperature is higher than 40 ℃, the relative humidity of the air shall not exceed 50%. Higher relative humidity is allowed under lower humidity. Other measures shall be taken for condensation occasionally caused by temperature change;

In the medium without explosion risk, and the medium has no place with enough gas and conductive dust to corrode metal and destroy insulation;

Where there is no rain or snow.

Structural features

It has the characteristics of small volume, high breaking capacity, short flying arc and anti vibration;

The circuit breaker has isolation function and its rated insulation voltage is 800V;

According to the rated limit short-circuit breaking capacity, it can be divided into M-type (high breaking type) and H-type (high breaking type);

It has the functions of overload long time delay inverse time limit, short-circuit short time delay definite time limit, short-circuit instantaneous and undervoltage protection, residual current protection (optional) and open phase protection (optional), which can protect the power supply equipment of the line from damage;

Complete protection features can improve power supply reliability.