Many people don't know much about the difference between AC contactor and DC contactor. Maybe they just think that the former is used in AC and the latter is used in DC. Not all of them are like this. Now let's exchange contactor manufacturer - Shanghai People's switch factory to give you a detailed introduction.

    First of all, it's not that AC contactor can't be used in DC and DC contactor can't be used in AC. in some special cases, AC contactor can replace its use, but the operation time can't be too long, because the coil heat dissipation effect of AC contactor is relatively poor, which is determined by their use, so if you really want to connect AC contactor The contact is used as a DC contactor for a long time. The manufacturer of the AC contactor reminds you to connect a resistor in series in the coil of the AC contactor, so that the current through the AC contactor will not be too large. But DC contactors can not be used instead of AC contactors. No matter what equipment you add, it is not feasible because of their construction.

    The core of the AC contactor has a short-circuit ring, while the DC contactor does not exist in most cases!