Causes of high temperature rise of molded case circuit breaker

    In the daily operation of molded case circuit breakers, it will be found that the temperature rise of molded case circuit breakers is too high. Shanghai Great Wall, the manufacturer of molded case circuit breakers, will explain the reasons for the high temperature rise of molded case circuit breakers and the corresponding treatment methods in detail.

    The causes of the over temperature rise of molded case circuit breakers are generally as follows:

    1. The contact surface of molded case circuit breaker is seriously worn or poorly contacted;

    2. The connecting screws of the two conductive parts of the main circuit are loose;

    3. The contact pressure of the molded case circuit breaker is too small, which affects the temperature change inside the molded case circuit breaker.

    The main methods to solve the problem are as follows:

    1. Check whether the contact of molded case circuit breaker is too small. If the above conditions are found, adjust the contact spring pressure in time. If serious damage is found, replace the contact.

    2. Check whether the connecting screws are loose. If found, the maintenance personnel shall tighten them in time to ensure the normal operation of molded case circuit breaker.

    3. Check whether the contact contact surface of molded case circuit breaker is seriously worn or has poor contact. Take corresponding measures according to the corresponding situation. If the wear is serious, replace the damaged contact.

    Regular maintenance of molded case circuit breaker, through the process of maintenance, find out the potential hidden dangers of molded case circuit breaker, so as to eliminate as early as possible, can improve the stability of the daily operation of molded case circuit breaker, and can effectively extend the service life of molded case circuit breaker.