公开(公告)号：US20210210297A1

公开(公告)日：2021-07-08

申请号：US15777594

申请日：2016-11-21

Applicant: BOURNS KK ,  POLYPLASTICS CO., LTD.

Inventor： Masashi NAMIKAWA ,  Shinichi HIROTA

IPC: H01H37/04 ,  H01H37/64 ,  H01H11/00

Abstract: Provided is a breaker capable of further downsizing without impairing rigidity and strength of a case. The breaker comprises a fixed contact, a movable piece 4 having and pressing a movable contact to the fixed contact, a thermally responsive element for moving the movable piece to separate the movable contact from the fixed contact by deformation thereof responding to temperature change, a case for containing the fixed piece, the movable piece and the thermally responsive element, and a cover piece attached on the case. The case has an end face on which the cover piece is disposed, a containing recess caved from the end face and forming a space to which the movable piece and the thermally responsive element are contained, and a first protrusion protruding from the end face and to which the cover piece is fitted.