CURRENT CUTOFF SYSTEM

The purpose of the invention is to provide a current cutoff system in which the wiring of a battery can be safely cut using a pyroswitch. This current cutoff system has a shunt resistor (100) that measures the value of a current flowing from a battery (B) to a motor (M), a threshold value detection unit (10) that detects whether or not the current value measured by the shunt resistor (100) exceeds a preset threshold value, and a pyroswitch (200) that cuts the shunt resistor (100) when the threshold value detection unit (10) detects that the threshold value is exceeded.