A breaker 1 has a fixed contact 21, a movable piece 4 which has an elastic portion 43 formed in a plate shape and being elastically deformable, and a movable contact 41 in one end portion of the elastic portion 43, so as to press the movable contact 41 against the fixed contact 21, a thermally-actuated element 5 which is deformed in accordance with a temperature change, and shifts from a conduction state in which the movable contact 41 contacts with the fixed contact 21 to a shut-off state in which the movable contact 41 separates from the fixed contact 21, and a case 10 which accommodates the fixed contact 21, the movable piece 4, and the thermally-actuated element 5. The case 10 has a side wall 11 extending in a long direction Dl of the movable piece 4, and the side wall 11 is provided, in an adjacent portion to the thermally-actuated element 5, with a convex portion 14 protruding toward the outside of the case 10.

A relay is disclosed. In an embodiment a relay includes a first contact, a second contact, a movable element arrangeable in a closed position and in an open position; and at least one bimetallic strip, wherein the movable element electrically connects the first contact to the second contact in the closed position, wherein the first contact and the second contact are electrically isolated from each other when the movable element is arranged in the open position, and wherein the at least one bimetallic strip is configured to be deformed upon an increase in temperature such that it presses the movable element against the first and second contacts after deformation.

Electromechanical circuit breakers are disclosed herein. In some embodiments, the breakers can be integrated into battery management systems to simplify battery management circuitry and/or to provide redundancy to the battery management systems. In some embodiments, the breakers can be provided to reduce damage to the battery management systems during hot-swapping of a battery cell. The breakers can be automatically resettable or not automatically resettable in various embodiments.

A circuit interrupter includes: a first fixed terminal including a first fixed contact; a movable contactor which is formed as a separate part from the first fixed terminal and includes a first movable contact; a holding unit configured to hold the movable contactor so that the first movable contact is connected to the first fixed contact; and a squib configured to generate gas by combustion. In the circuit interrupter, pressure of the gas generated by the squib causes movement of the movable contactor in a direction away from the first fixed terminal so that the first movable contact is separated from the first fixed contact.

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.

The present invention relates to the technical field of temperature controllers, and more particularly, to a backpack power-off reset temperature limiter, which comprises an insulating base, a first terminal, a second terminal, a power-receiving elastic piece and an arch-shaped temperature sensing sheet. The power-receiving elastic piece is arranged on the upper end surface of the insulating base. One end of the power-receiving elastic piece is fixedly connected with the first terminal, and the other free end of the power-receiving elastic piece is electrically connected with the second terminal. The two ends of the power-receiving elastic piece are respectively provided with a fixing clamping position that is clamped with an end part of the temperature sensing sheet, and the two sides of the power-receiving elastic piece are respectively provided with an assembly clamping position that is matched with the temperature sensing sheet.

The present invention relates to the technical field of temperature controllers, and more particularly, to a backpack power-off reset temperature limiter, which comprises an insulating base, a first terminal, a second terminal, a power-receiving elastic piece and an arch-shaped temperature sensing sheet. The power-receiving elastic piece is arranged on the upper end surface of the insulating base. One end of the power-receiving elastic piece is fixedly connected with the first terminal, and the other free end of the power-receiving elastic piece is electrically connected with the second terminal. The two ends of the power-receiving elastic piece are respectively provided with a fixing clamping position that is clamped with an end part of the temperature sensing sheet, and the two sides of the power-receiving elastic piece are respectively provided with an assembly clamping position that is matched with the temperature sensing sheet.

This disclosure relates to a heat sensitive electrical safety device with a manually resettable device and an automatically resettable fuse. The manually settable fuse prolongs the serviceable life of the automatically resettable fuse.

A relay is disclosed. In an embodiment a relay includes a first contact, a second contact, a movable element arrangeable in a closed position and in an open position; and at least one bimetallic strip, wherein the movable element electrically connects the first contact to the second contact in the closed position, wherein the first contact and the second contact are electrically isolated from each other when the movable element is arranged in the open position, and wherein the at least one bimetallic strip is configured to be deformed upon an increase in temperature such that it presses the movable element against the first and second contacts after deformation.

A breaker has a movable piece which has an elastic part elastically deformable and a moving contact in one end portion of the elastic part, and which presses the moving contact against the fixed contact so that the moving contact contacts with the fixed contact; a thermally-actuated element deforming with a change in the temperature to actuate the movable piece so that the moving contact is separated from the fixed contact; a case housing the movable piece and the thermally-actuated element; and a terminal piece to be connected to an external circuit. The case has a side wall extending along a longitudinal direction of the elastic part. The terminal piece has a protruding portion which protrudes from the side wall toward the outside of the case. The side wall is provided, in its neighboring portion of the protruding portion, with a concave portion which dents inwardly of the case.