A protection device including: (i) a protection component having a first thermal fuse and a resistive body, the resistive body being supplied with a current in an abnormal state to generate heat, the heat activating the first thermal fuse to cut off the current; (ii) a PTC component; and (iii) a second thermal fuse, the second thermal fuse being electrically connected in series to the PTC component, the first thermal fuse of the protection component being electrically connected in parallel to the PTC component and to the second thermal fuse, and the protection component being activated in the abnormal state so that the PTC component trips to generate heat, the heat blowing the second thermal fuse.

A protection device including: (i) a protection component having a first thermal fuse and a resistive body, the resistive body being supplied with a current in an abnormal state to generate heat, the heat activating the first thermal fuse to cut off the current; (ii) a PTC component; and (iii) a second thermal fuse, the second thermal fuse being electrically connected in series to the PTC component, the first thermal fuse of the protection component being electrically connected in parallel to the PTC component and to the second thermal fuse, and the protection component being activated in the abnormal state so that the PTC component trips to generate heat, the heat blowing the second thermal fuse.

The present invention proposes a protection device which has a large rated voltage and a large rated current, which is capable of sufficiently suppressing arc generation during activation, and which is also capable of providing suitable protection against overcurrent due to short circuiting or the like of a main circuit. The protection device of the present invention includes (i) a protection element which includes a first thermal fuse and a resistor, and in which the resistor generates heat as a result of current passing through the resistor when there are abnormalities, and the first thermal fuse is activated due to this heat and interrupts the current, (ii) a PTC element and a second thermal fuse which are electrically connected in parallel to the first thermal fuse and which are electrically connected in series to each other, and (iii) a current fuse which is electrically connected in series to the first thermal fuse.

The present invention proposes a protection device which has a large rated voltage and a large rated current, which is capable of sufficiently suppressing arc generation during activation, and which is also capable of providing suitable protection against overcurrent due to short circuiting or the like of a main circuit. The protection device of the present invention includes (i) a protection element which includes a first thermal fuse and a resistor, and in which the resistor generates heat as a result of current passing through the resistor when there are abnormalities, and the first thermal fuse is activated due to this heat and interrupts the current, (ii) a PTC element and a second thermal fuse which are electrically connected in parallel to the first thermal fuse and which are electrically connected in series to each other, and (iii) a current fuse which is electrically connected in series to the first thermal fuse.

A temperature-dependent switch having a switch housing, a temperature-dependent switching mechanism and a heating resistor component. The switch housing comprises a lower part made of electrically conductive material and a lid part which comprises a first section made of electrically conductive material and a second section made of electrically insulating material. The temperature-dependent switching mechanism comprises a movable contact part that establishes a first electrical connection between the lower part and a stationary contact part below a response temperature and interrupts the first electrical connection upon exceeding the response temperature. The heating resistor component is arranged inside the switch housing between the lid part and the lower part. The heating resistor component is electrically connected in series with the lower part and the first section of the lid part and electrically in parallel with the first electrical connection. The heating resistor component is arranged at a distance from the stationary contact part.

A temperature-dependent switch having a switch housing, a temperature-dependent switching mechanism and a heating resistor component. The switch housing comprises a lower part made of electrically conductive material and a lid part which comprises a first section made of electrically conductive material and a second section made of electrically insulating material. The temperature-dependent switching mechanism comprises a movable contact part that establishes a first electrical connection between the lower part and a stationary contact part below a response temperature and interrupts the first electrical connection upon exceeding the response temperature. The heating resistor component is arranged inside the switch housing between the lid part and the lower part. The heating resistor component is electrically connected in series with the lower part and the first section of the lid part and electrically in parallel with the first electrical connection. The heating resistor component is arranged at a distance from the stationary contact part.

The present description concerns a switch based on a phase-change material comprising: first, second, and third electrodes; a first region of said phase-change material coupling the first and second electrodes; and a second region of said phase-change material coupling the second and third electrodes.

The present description concerns a switch based on a phase-change material comprising: first, second, and third electrodes; a first region of said phase-change material coupling the first and second electrodes; and a second region of said phase-change material coupling the second and third electrodes.

A thermally activated safety switch for safeguarding a consumer of a power supply network of a vehicle, having a switch housing in a temperature-independent switching unit, which subject to the temperature thereof establishes an electrically conductive connection between two external terminals fed out of the switch housing, wherein the external terminals are fed out at opposite housing sides of the switch housing. On the one hand, the external terminals are provided for an electrical and mechanical terminal connection to the cable connection ends of a consumer to be protected, and on the other hand to a cable portion leading to an on-board power supply electronics, and are configured accordingly.

A thermally activated safety switch for safeguarding a consumer of a power supply network of a vehicle, having a switch housing in a temperature-independent switching unit, which subject to the temperature thereof establishes an electrically conductive connection between two external terminals fed out of the switch housing, wherein the external terminals are fed out at opposite housing sides of the switch housing. On the one hand, the external terminals are provided for an electrical and mechanical terminal connection to the cable connection ends of a consumer to be protected, and on the other hand to a cable portion leading to an on-board power supply electronics, and are configured accordingly.