Switch for interruption of a direct current circuit powered by two electric voltage sources

A switch for interruption of a direct current circuit comprising:

• two direct current electric voltage sources integrated within said circuit which are connected in series with each other and via a main electric conductor electrically connected with at least one electric load;
• wherein said main electric conductor has a connection between the two electric voltage sources and the at least one electric load connected by a supplemental electric conductor;
• the supplemental electric conductor being electrically connected in parallel to said two electric voltage sources and also with said load;
• wherein prior to activation of the switch or during regular operation of said direct current circuit, the supplemental electric conductor is interrupted by a gap;
• wherein the main conductor further comprises an electrically conductive branch with an integrated electric fuse comprising:
• a melting member which is connected in parallel to said main conductor at two connecting points in an area between both the two electric voltage sources;
• and
• an accelerometer configured to detect at least one of a predetermined acceleration or a predetermined deceleration, wherein the accelerometer is connected in parallel to the melting member;
• wherein said main conductor further comprises a movable section located at an intermediate area between said two connecting points;
• wherein, in response to the accelerometer detecting the at least one of the predetermined acceleration or the predetermined deceleration:
• the melting member is capable of melting upon which the electrically conductive branch becomes electrically open;
• and
• the movable section is capable of disconnecting from the main conductor and irreversibly moving into an alternate position into the gap in said supplemental electric conductor which therefore becomes electrically conductive, whereby, upon the moveable section moving into the alternate position, the main electric conductor becomes electrically open.