Abstract: A contactor and an air conditioning system are provided. The contactor includes a main body which is provided with a first opening; a contact unit which is disposed in the main body, the contact unit includes a movable contact part and a stationary contact part; an electromagnetic unit which is disposed in the main body, wherein the electromagnetic unit is configured to control the movable contact part to contact with or separate from the stationary contact part; an isolation structure which is disposed between the electromagnetic unit and the contact unit, the isolation structure is configured to block refrigerant entering from the first opening from entering a space where the movable contact part and the stationary contact part contact each other through the electromagnetic unit.

Abstract: The disclosure provides a contactor and an air conditioning system. The contactor includes a main body, a first electrical terminal, a second electrical terminal, a contact support, and a refrigerant blocking structure. The contact support is at least partially arranged in the main body and arranged between the first electrical terminal and the second electrical terminal. The contact support is configured such that a power received by the first electrical terminal from a power grid is at least partially transmitted to a load through the second electrical terminal when activated. The refrigerant blocking structure is arranged on a side of the main body toward the contact support, and the refrigerant blocking structure, the contact support, and the opening are arranged correspondingly, and the refrigerant blocking structure at least partially surrounds an outside of the contact support for blocking a flame generated by igniting of a refrigerant.

Abstract: The disclosure provides a plug tab and a contactor and relates to technical field of electric power. The plug tab comprises: a body connected to a first conductive member; a plug-in part disposed on the body, the plug-in part is configured to be detachably connected to a first terminal; and an error preventing part disposed on the body, serves to interfere with plugging of a second terminal into the plug-in part; wherein the first terminal and the second terminal are different. The conduction between the first conductive member and the external current is realized by the plug-in part configured to be detachably connected to the first terminal. The error preventing part can interfere with plugging of the second terminal into the plug-in part by the arrangement of the error preventing part, such that the plug tab can only be corresponding to and matching with the first terminal.