Shape memory alloys and shape memory alloy cylinder explosion low duty ratio equation using a wire separating device, the installation method of the separation device, the separation system, and method for the separation and reassembly method. By is trigger occurred in more detail, in a separation device for separating the outer structure when necessary, a predetermined one another in terms of a plurality of outer holes spaced at intervals, an open top opening and the bottom it is a closed lower surface comprising: a housing; A shape memory alloy cylinder consisting of a shape memory alloy which is expanded in the axial direction by the heat; The center bolt bolt head lower surface which is brought into contact with the upper surface of the shape memory alloy cylinder; Is provided inside the housing, a shape memory alloy cylinder for the locking sleeve is inserted into the cylinder portion and the center bolt is inserted provided with a cylindrical insert which is inserted into the installation; Retainer of the first inclined surface at the bottom is in contact with the upper inclined surface of the center bolt, the bottom of the second inclined surface is in contact with the outer peripheral portion of the upper inclined plane locking sleeve binding on the top side of the trigger movement occurs around the bolt; Is provided between the housing and the locking sleeve, and having a plurality of wire guide parallel to each other in the longitudinal direction formed on the outer peripheral surface, the trigger block to constrain the radial movement of the trigger retainer generation cell; And is provided on the wire guide, both ends of each of which is fixed to the outer hole, it is retracted by the electric power supplied in accordance with the trigger generated by moving the trigger block to the upper bound of the upper movement of the radial movement of the retainer and the center bolt relates to non-explosive type separation apparatus using the shape memory alloy, the cylinder and the shape memory alloy wire characterized in that it comprises a; a shape memory alloy wire to allow the bolt to release the tension in the center.