Loop connector and closed-circuit forming connector

A loop connector comprising:

• a first connector, the first connector including a first housing made of an insulating material and a pair of first terminals fitted into the first housing, the first connector being surface-mounted on an end of a top surface of a board and having a fitting face thereof extended in a direction intersecting the top surface;
• and
• a second connector (101) having, the second connector including a second housing made of an insulating material and a second terminal therein and configured to make contact with the first terminals, electrically connecting the first terminals to each other, the second connector engaging the first connector and having a fitting face thereof extended in a direction intersecting an extending direction of the second terminal;
• wherein:
• the second housing includes a second terminal accommodation-concave portion, configured to accommodate therein the second terminal;
• and
• the second terminal includes a pair of terminal bodies and a connecting portion configured to connect the terminal bodies together, the second terminal having a U-shape defined by the terminal bodies and the connecting portion, the terminal bodies arranged perpendicular to the connecting portion when the second terminal is press-fit into the second terminal accommodation-concave portion.