Intelligent contactor having marine environmental adaptability

The invention provides an intelligent contactor having marine environmental adaptability. The contactor is configured to have fully sealed structure. External interfaces disposed in the contactor comprise a three-phase input interface, a three-phase output interface and an external control interface; a voltage sampling circuit performs sampling on a voltage of the three-phase output interface, and sends acquired voltage data to a main control unit; a current sampling circuit performs sampling on a current of the three-phase output interface, and sends acquired current data to the main control unit; the main control unit is used for calculating the voltage data and/or the current data, obtaining state data of the contactor, and controlling a solenoid of the controller to be powered on and off when the fact that the state data has any abnormity is determined; a communication module is connected with the external control interface through an external control binding post, and is connected to the main control uni