This movable contact point is provided with a conductor member having an end having a substantially rectangular contour in a plan view. The conductor member has: a dome section; a flange section extending from the dome section in the direction away from the dome section; a connection section provided at each of the four corners of the rectangle; and contact point sections extending away from the connection sections. A narrowed section is formed by: a first boundary where a connection section and the flange section are connected; a second boundary where the connection section and a contact point section are connected; and the connection section. Alternatively, the first and second boundaries are curved in the plan view so as to be recessed toward the dome section.