Device, semiconductor apparatus, gate driver, and power module

A device comprising:

• a parallel circuit in which a plurality of series circuits is connected in parallel, each of the plurality of series circuits having a resistive element and a fuse element connected in series and having a different time period for the fuse element to melt by an overcurrent, wherein
• one end in the parallel circuit is connected to a first connection point having a reference potential, and another end in the parallel circuit is connected to a second connection point that is to have a potential higher than the reference potential, and
• a melting characteristic of the fuse element in at least one of the series circuits connected in parallel is the same as a melting characteristic of the fuse element in at least another one of the series circuits connected in parallel;
• and
• a determination circuit connected between the first connection point and the second connection point configured to count the number of the fuse elements in the series circuits connected in parallel that have melted based on comparing voltage or current measurements with a plurality of threshold values, each of the plurality of threshold values based on a case where a cumulative number of the fuse elements, each having the different time period to melt, will have melted.