FUEL CELL SYSTEM

A fuel cell system in which a controller unit is prevented from being disassembled in an unconventional manner. The fuel cell system includes a fuel cell stack configured to generate electricity; a cable; a controller unit connected to the full cell stack through the cable to control the fuel cell system; a connector configured to connect the controller unit to the cable, where the connector has an insertion portion, and the insertion portion is inserted into the controller unit; a protector fixed onto the controller unit to protect the controller unit; and a bracket supporting the protector. The bracket has a cable support portion, and the cable support portion is configured to support the cable. A displaceable distance of the cable between the connector and the cable support portion is less than a length of the insertion portion.