The manufacturer of 400A DC Contactor tells you that if the contact of the DC contactor is not firm, the contact resistance between the noise contacts will expand, which will cause the surface temperature to be too high, and the surface contact will become a point contact, or even blockage. The reasons for this common problem are:

(1) There are oil stains, flower hairs, and dirty things on the contacts.
(2) The 400A DC Contactor manufacturer tells you that the surface of the contact is oxidized for long-term use.
(3) Defects, burrs, or fine particles of metal composite materials caused by galvanic ablation.
(4) The manufacturer of 400A DC Contactor tells you that there is a blockage in part of the exercise and fitness.
The treatment methods for the unsturdy DC contactor connector are as follows:
(1) For oil stains, flower hair or dirty things on the contacts, you can clean them with a cotton cloth dipped in alcohol or gasoline.
(2) The manufacturer of 400A DC Contactor tells you that if it is a silver or silver-cobalt alloy contact, its touch surface will be converted into an oxide layer or will cause mild burns and blackening under the action of an electric sol. Generally, it will not hurt the work. Alcohol can be used. Clean up with gasoline or carbon tetrachloride solution. The manufacturer of 400A DC Contactor tells you that even if the surface of the contact is burned to be uneven, only use a fine file to remove the surrounding splashes or burrs. Do not file too much to prevent damage to the contact life. For copper contacts, if the burn level is light, you only need to use a fine file to repair the unevenness, but it is not allowed to polish with fine emery cloth to prevent small quartz stones from staying between the contacts and cannot be maintained for a long time. Touch; the manufacturer of 400A DC Contactor tells you that if the burn is severe and the surface is low, try to remove the new contact.
(3) The manufacturer of 400A DC Contactor tells you that there is a blockage in part of the exercise and fitness, which is disassembled for maintenance.