With leakage safety protection molded case circuit breaker coil generated overheating burned or damaged causes and ways to deal with the method is carried out as follows:

1, if the coil power supply voltage with residual leakage protection plastic case circuit breaker is too high or too low can adjust the coil power supply voltage.

2, with residual leakage protection molded case circuit breaker coil technology for parameters (rated output voltage, rated rate, load-related coefficient and applicable work management system, etc.) does not meet the actual needs of enterprises using this situation, replace the coil or with residual leakage protection molded case circuit breaker.

3, with residual leakage protection plastic case circuit breaker coil rated power and power renewal rate exceeds the technical requirements of the product and replace the coil with the corresponding operating frequency and power renewal rate.

4, if the plastic case circuit breaker coil is not well done, or due to mechanical damage or insulation damage, replace the coil to eliminate the damage caused by mechanical damage to the coil.

5, if the business environment to carry out the temperature requirements are too high, or the air is humid or contains corrosive gases and damage to the insulation of the coil of the plastic case circuit breaker with residual leakage protection, should change their installation a location, the use of a special structure design of the coil.

6, mechanical structure damage, different parts of the movement can be stuck to eliminate the jamming phenomenon.

7, AC movable iron core polar material surface produces uneven, or demagnetization air gap is too large, remove the polarity as well as the surface or replace the iron core.

8, with residual leakage protection of the plastic case circuit breaker production of DC working double coil, due to the welding of the normally closed interlocking contacts is not loose, resulting in coil overheating. Adjust the contact network parameters of the plastic case circuit breaker with residual use leakage safety protection to replace the burnt-out coil.

9, the core column column surface is not uniform or the central column air gap is too large. Clean the electrode surface or adjust the core and replace the coil.

With residual leakage protection plastic case circuit breaker coil for failure is the reason for many. For example, the power management operating voltage is too high, if no one coil exceeds 110% of the rated output voltage, there are many students develop may lead to a burnout. If the power system voltage is too low, rated at 85% low, there is a risk of burning the coil with leakage protection MCCB, this is due to the leakage protection enterprise of the plastic case circuit breaker armature can not be attracted, the coil circuit reactance value is small, easy to cause excessive current density.