Patent ID: 9337671
Filing Date: 2016-05-10
CPC Classification: G01N,G08B,H01H,H01M,H02H,H02J,Y02E,Y10T

Claim Text:
1. A protective element comprising: a substrate comprising a first insulating member and a concave portion; a heating body layered on the concave portion of the substrate; a second insulating member layered on the substrate covering the heating body; first and second electrodes layered on a surface of the substrate on which the second insulating member is layered; a heating body electrode layered on the second insulating member superimposed with the heating body, and electrically connected to a current path between the first and the second electrodes and the heating body; and a low-melting point metal layered between the heating body electrode and the first and the second electrodes so as to cause a blowout of the current path between the first and the second electrodes by heating, wherein the heating body electrode is disposed at a same or lower position in a thickness direction of the substrate relative to the first and the second electrodes.