Patent ID: 9460876
Filing Date: 2016-10-04
CPC Classification: H01H,H01M,Y02E

Claim Text:
1. A breaker comprising a fixed piece having a fixed contact, a movable piece having: a thermal actuator element for actuating the movable piece so that the movable contact is separated from the fixed contact by a deformation of the movable piece accompanying a temperature change, the thermal actuator element having a bottom surface facing the fixed piece, and an upper surface opposite to the bottom surface, and a casing for housing the fixed piece, the movable piece and the thermal actuator element, a first direction being defined as a direction from the fixed contact to the movable contact; a second direction being defined as a direction opposite to the first direction, wherein: a bottom surface, facing the fixed piece, of the base end portion of the movable piece is positioned closer to the fixed piece, along the second direction, than an apex of the upper surface of the thermal actuator element while the fixed contact is in contact with the movable contact, and the movable piece further includes: