Alternatively changeable electric circuit and method for changing of electric current path within an electric circuit

An alternatively changeable electric circuit, comprising:

• a source of a direct or alternative voltage;
• an electric load which is electrically connected with said voltage source via a primary branch and a secondary branch of a basic electric conductor;
• and
• an alternative electric conductor which is connected in parallel with both the primary branch and secondary branch of the basic electric conductor;
• wherein upon a predetermined circumstance, said primary branch is physically interrupted, upon which an electric current, which initially flowed through said primary branch, is then redirected through said alternative electric conductor;
• wherein said alternative electric conductor comprises a pair of electric conductive sections aligned with each other and spaced apart from each other at a distance, so that an electrically insulating gap is formed there-between, and that said primary branch of the basic conductor includes an electrically conductive element, which upon said predetermined circumstance is physically removable from the said primary branch and displaceable into said gap between said pair of electric conductive sections of the alternative electric conductor, which becomes bridged and electrically conductive;
• wherein said electrically conductive element represents a part of material of said primary branch of the basic electric conductor, which has a mechanically weakened area and is in said weakened area by means of appropriate mechanical loading separable apart from said primary branch,
• wherein said weakened area is an area having a transversal cross-section essentially smaller than the primary branch of the basic electric conductor;
• and
• wherein the circuit further comprises a pyrotechnic actuator, which is suitable for being triggered in the redetermined circumstance and is arranged adjacent to said conductive element of said primary branch, so that said conductive element is by means of said pyrotechnic actuator mechanically separable apart from said primary branch and displaceable into the gap between said pair of electric conductive sections of the alternative electric conductor;
• and
• wherein said conductive element of the primary branch of the basic electric conductor, which has said weakened area, is on a side, which is faced towards said pyrotechnic actuator, furnished with a concave cavity, and is moreover on an opposite side, which is faced towards said gap between said pair of electric conductive sections of the alternative electric conductor, furnished with a convex external surface, which is suitable for being impressed and jammed between said pair of electric conductive sections of the alternative electric conductor within the gap.