Contactor and method

The invention discloses a contactor and a method, and belongs to the technical field of contactors, and the contactor comprises a contactor body which is provided with a liquid cooling part; the liquid cooling component is arranged outside the magnetic system assembly; the liquid-cooled component includes: a resistive element; the liquid is used for soaking the resistor element and cooling the resistor element; the container is used for containing the liquid; according to the contactor and the method, the contactor provided with the liquid cooling buffer and used for providing pre-charging for the capacitor is used for providing controllable charging current in the pre-charging stage of the capacitor, temperature rise of a resistance wire or an enameled wire when high current passes through is reduced through liquid cooling, and therefore pre-charging safety is improved, and the service life of the contactor is prolonged. 本发明公开了一种接触器及方法，属于接触器技术领域，包括：接触器本体，在接触器本体设置了液冷部件；所述液冷部件设置在磁系统组件外部；所述液冷部件包括：电阻元件；用于浸泡所述电阻元