Disclosed is a plug power cord, which includes a plug including a main body, a live wire contact and a neutral wire contact, and a load wire. The load wire is connected with the live wire contact, and a protector is arranged between the load wire and the live wire contact, or, the load wire is connected with the neutral wire contact, and a protector is arranged between the load wire and the neutral wire contact.

A breaker 1 includes a fixed piece 2 having a fixed contact 21, a movable piece 4 including a movable contact 41 and having the movable contact 41 so as to be pressed against and in contact with the fixed contact 21, a thermally actuated element 5 shifting the movable piece 4 from a conductive state to a cut-off state in accordance with a temperature change, and a case 7 accommodating the fixed piece 2, the movable piece 4, and the thermally actuated element 5. The case 7 includes a case main body 71 accommodating the movable piece 4 and the thermally actuated element 5, a lid member 81 covering a housing concave portion 73 of the case main body 71, and a metal plate 9 embedded in the lid member 81. Heat capacity of the metal plate 9 is larger than heat capacity of the fixed piece 2.

An electrical mains plug having a body formed of an electrically insulating material is described. Two contact pins are arranged parallel to one another and which project out of the body at a first side thereof, and inside the body are connected or can be connected in each case to an electrical conductor which leads out or can be led out of the body at a second side thereof. The thermal bimetallic element is provided as a temperature sensor, said thermal bimetallic element being a constituent part of the thermal bimetallic switch which is associated with at least one of two contact pins. An electrical connection cable suitable therefor and an electrical device connected thereto are also described.

A thermal limiter system for an electric motor includes a thermal limiter fuse having a hollow contact element anchored by solder to at least one of first and second terminals of the fuse. A coaxial spring element causes the hollow contact element to slidably release and separate from one of the first and second terminals due to overheating of the solder that is not caused by a flow of electrical current. The system also includes stator mounting blocks and a stator cooling jacket for a motor to be thermally protected.

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.

There is provided a pipe heating device, including; a sensor installed in a gas pipe; a heating part having a heat generation portion arranged so as to cover the gas pipe except for a region of the gas pipe where the sensor is installed; and a heat conducting member attached between an outer peripheral surface of the gas pipe and the sensor and formed of a material having a higher thermal conductivity than the gas pipe.

A safety device for heating hoses is provided to prevent overheating of a heating wire. The safety device includes a first hose that connects between a reservoir and a connector and a second hose that is fluidly connected to the first hose and allows windshield washer fluid to flow from the connector to a spray nozzle. A housing encloses the connector and a heating wire is disposed in at least one of the first and second hoses. A terminal is disposed inside the housing and is connected to the heating wire to apply electric power from a power supply unit to the heating wire. A circuit breaker is connected to the terminal and the heating wire and cuts off electric power applied to the heating wire based on a temperature condition.

A push switch, having a conductive member which includes three integrally formed components: a conductive element, a U-shaped clip, and a conductive cantilever element. An overheating destructive element is provided on the conductive cantilever element, and the overheating destructive element can be destroyed at a destructive temperature, in which the destructive temperature is between 100 C. to 250 C. The push switch has a contact element in contact with the overheating destructive element so as to control the conductive cantilever element to be electrically connected or disconnected. When the conductive cantilever element is electrically connected, and if the overheating destructive element is overheated and destroyed, the conductive cantilever element is driven to become electrically disconnected, thereby achieving protection against overheating. The integral formation and manufacturing of the conductive member has the advantages of being structurally simple and easy to assemble.

An overheating destructive switch, comprising: a first conductive element, a second conductive element, a movable conductive element, an overheating destructive element, an operating component, and a second elastic element. The movable conductive element connects the first conductive element and the second conductive element. A first elastic element and the second elastic element act on an operating element. The first elastic element is compressed and has a first elastic force, and the second elastic element has a second elastic force. The first elastic force is greater than the second elastic force under in a normal state. When the overheating destructive element is destroyed due to overheating, the first elastic force is reduced or lost, such that the second elastic force becomes greater than the first elastic force. The movable conductive element is consequently disconnected from the first conductive element and the second conductive element, thus achieving protection against overheating.

A method of connecting an electric element (20) to a switch part (10) provided with a fixed contact (11a), i.e., an example of a first contact, a first terminal (12) connected to the fixed contact (11a) and exposed out of the switch part (10), a movable contact (11b), i.e., an example of a second contact, capable of moving to a position at which the movable contact (11b) is in contact with the fixed contact (11a) and a position at which the movable contact (11b) is spaced apart from the fixed contact (11a), and a second terminal (13) connected to the movable contact (11b) and exposed out of the switch part (10) includes: connecting the electric element (20) in parallel to the fixed contact (11a) and the movable contact (11b) between the first terminal (12) and the second terminal (13).