Switching device (100, 200) for the controlled switching of an electrical connection, comprising a positive power terminal (101, 201) and a negative power terminal (102, 202), a connection element, which is configured to controllably electrically couple the positive power terminal (101, 201) and the negative power terminal (102, 202) to one another when in a first state and electrically disconnect the positive power terminal (101, 201) and the negative power terminal (102, 202) from one another when in a second state, and a blocking element, which is configured to block the connection element in the second state when in a non-driven state and to release the connection element when in a driven state, wherein the connection element has a spring-loaded armature, characterized in that the armature has at a first end a contact bridge for connecting the positive power terminal (101, 201) and the negative power terminal (102, 202), and said armature has at a second end an undercut, in particular a mushroom head, wherein the spring force is configured to move the armature into the second state, in which the positive power terminal (101, 201) and the negative power terminal (102, 202) are electrically disconnected from one another, wherein the blocking element has a spring-loaded pawl, which is prestressed by the spring force in the direction of the mushroom head and is configured to form-fittingly contact and block the mushroom head in the non-driven state of the blocking element, and wherein the blocking element has an electromagnet configured to pull the pawl out of the travel path of the mushroom head when in the driven state. a positive power terminal (101, 201) and a negative power terminal (102, 202), a connection element, which is configured to controllably electrically couple the positive power terminal (101, 201) and the negative power terminal (102, 202) to one another when in a first state and electrically disconnect the positive power terminal (101, 201) and the negative power terminal (102, 202) from one another when in a second state, and a blocking element, which is configured to block the connection element in the second state when in a non-driven state and to release the connection element when in a driven state, wherein the connection element has a spring-loaded armature, characterized in that the armature has at a first end a contact bridge for connecting the positive power terminal (101, 201) and the negative power terminal (102, 202), and said armature has at a second end an undercut, in particular a mushroom head, wherein the spring force is configured to move the armature into the second state, in which the positive power terminal (101, 201) and the negative power terminal (102, 202) are electrically disconnected from one another, wherein the blocking element has a spring-loaded pawl, which is prestressed by the spring force in the direction of the mushroom head and is configured to form-fittingly contact and block the mushroom head in the non-driven state of the blocking element, and wherein the blocking element has an electromagnet configured to pull the pawl out of the travel path of the mushroom head when in the driven state.