Safety connection unit including: a
busbar (30); a hinge section (38) provided at a center of the
busbar (30) and comprising a band plate section (33) and bending sections (31, 32) at both side edges of the band plate section (33); and two locking connection bodies (10, 20) which are integrally provided on both sides of the joint section (38) and are formed by attaching two resin housings (11, 21) made of insulating resin to plate sections forming respective locking circuits by a
casting process, wherein a required part is exposed, characterized by the fact that the two bodies (10, 20) are arranged to be pivoted towards each other in a U-shape in plan view during a bending process at the bending sections (31, 32), in order to subsequently be arranged at a distance which corresponds to the width of the strip plate section (33), Individually for the resin housings (11, 21) at positions remote from the joint section (38) engagement units (130, 140) are provided which are designed to maintain the U-shape in plan view, and two or more pairs of a recessed guide (111) and a protruding guide (121) are provided near the joint section (38) along both side edges of the band plate section (33) on opposite surfaces of the two resin housings, wherein the recessed and protruding guides (111, 121) are opposite each other, and each pair of guides (111, 121) is arranged to engage with each other to guide the two resin housings (11, 21) into suitable positions during bending, wherein the pairs of guides (121) are each arranged with intervals between them.