An integrated switching device, comprising: a contactor unit for locating in an electric circuit in series with a load, the contactor unit being configured to control a continuity state of the electric circuit based on a control signal; a blocking unit configured to block a current flowing in the contactor unit; and a current measuring unit configured to measure a current flowing in the contactor unit, wherein the contactor unit, the blocking unit, and the current measuring unit are included in one housing, wherein the contactor unit includes: a positive electrode contactor unit and a negative electrode contactor unit configured to be connected with the electric circuit; and a connecting unit configured to electrically connect and disconnect the positive electrode contactor unit and the negative electrode contactor unit based on the control signal, wherein the blocking unit is located to be adjacent to any one or more of the positive electrode contactor unit, the negative electrode contactor unit, and the connecting unit, characterized in that the blocking unit is configured to explode and cut any one or more of the positive electrode contactor unit, the negative electrode contactor unit, and the connecting unit to block the current flowing in the contactor unit when the contactor unit does not disconnect the positive electrode contactor unit and the negative electrode contactor unit even though the control signal comprising a command to change the continuity state of the electric circuit from an ON state to an OFF state is received. a contactor unit for locating in an electric circuit in series with a load, the contactor unit being configured to control a continuity state of the electric circuit based on a control signal; a blocking unit configured to block a current flowing in the contactor unit; and a current measuring unit configured to measure a current flowing in the contactor unit, wherein the contactor unit, the blocking unit, and the current measuring unit are included in one housing, wherein the contactor unit includes: a positive electrode contactor unit and a negative electrode contactor unit configured to be connected with the electric circuit; and a connecting unit configured to electrically connect and disconnect the positive electrode contactor unit and the negative electrode contactor unit based on the control signal, wherein the blocking unit is located to be adjacent to any one or more of the positive electrode contactor unit, the negative electrode contactor unit, and the connecting unit, characterized in that the blocking unit is configured to explode and cut any one or more of the positive electrode contactor unit, the negative electrode contactor unit, and the connecting unit to block the current flowing in the contactor unit when the contactor unit does not disconnect the positive electrode contactor unit and the negative electrode contactor unit even though the control signal comprising a command to change the continuity state of the electric circuit from an ON state to an OFF state is received. a positive electrode contactor unit and a negative electrode contactor unit configured to be connected with the electric circuit; and a connecting unit configured to electrically connect and disconnect the positive electrode contactor unit and the negative electrode contactor unit based on the control signal, wherein the blocking unit is located to be adjacent to any one or more of the positive electrode contactor unit, the negative electrode contactor unit, and the connecting unit, characterized in that the blocking unit is configured to explode and cut any one or more of the positive electrode contactor unit, the negative electrode contactor unit, and the connecting unit to block the current flowing in the contactor unit when the contactor unit does not disconnect the positive electrode contactor unit and the negative electrode contactor unit even though the control signal comprising a command to change the continuity state of the electric circuit from an ON state to an OFF state is received.