The 300A DC Contactor manufacturer tells you that the contact of the DC contactor is not strong enough to cause the contact resistance between the squeaking contacts to expand, causing the surface temperature to be too high, making the surface contact into point contact, and even blocking and breaking. 300A DC Contactor manufacturers tell you the reasons for this common problem are:

1. There are oil stains, flowers, and unclean things on the contacts.
2. Long-term use, the contact surface is oxidized.
3. Defects, burrs or fine particles of metal composite shavings caused by electrical isolation ablation.
4. There is a blockage in part of sports and fitness.
The methods for dealing with the weak connection of the DC contactor are as follows:
1. For oil stains, flowers or unclean things on the contacts, the manufacturer of 300A DC Contactor tells you that you can use a cotton cloth dipped in alcohol or gasoline to clean it up.
2. If it is a silver or silver-cobalt alloy contact, when the contact surface is converted into an oxide layer or mildly scalded and blackened under the action of electric isolation, it generally does not hurt the work. Alcohol, gasoline or carbon tetrachloride can be used. Solution clean up. Even if the surface of the contact is burnt unevenly, it is only necessary to use a fine file to remove the splashes or burrs around it. Do not file too much to prevent damage to the service life of the contact. The manufacturer of 300A DC Contactor tells you that for copper contacts, if the burn level is light, just use a fine file to repair and level the unevenness, but it is not allowed to polish with fine emery cloth to prevent small stones from being left between the contacts. , and cannot be maintained for a long time; if the burn is serious and the surface is low, try to remove the new contacts.
3. There is a blockage in the sports and fitness part, and it is disassembled for maintenance.
Regarding the common problems and solutions of DC contactors, the 300A DC Contactor manufacturers have introduced them here, hoping to help you.