Abstract: 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.

Abstract: The object of the present invention is to provide a protection device capable of sufficiently suppressing the occurrence of arc at the time of activation with large rated voltage and rated current, as well as capable of fully opening the circuit. The present invention provides a protection device comprising: (i) a protection component comprising 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.

Abstract: The packaging apparatus comprises a former for forming a film sheet to a cylinder, a vertical chute pipe coaxially disposed in the former, support members for supporting the chute pipe disposed on load cells fixed on a frame separately in structure, a vertical heat sealer for sealing the film sheet into a cylinder, a controller for calculating the weight of goods to be put in the cylinder, a weighing unit for putting the goods in the cylinder while being controlled by the controller, a lateral heat sealer for sealing the cylinder under the end of the chute pipe for closing the cylinder filled with the goods and separating it by cutting while remaining a bottom portion of a next bag, wherein the controller controls a sequential steps of operation of the apparatus.