FUEL CELL SYSTEM

Provided is a fuel cell system that can be driven as much as possible even when abnormality occurs. [0002] The fuel cell system 11 includes: a fuel cell 12 that generates electricity through an electrochemical reaction of fuel gas and oxidation gas; a battery 21 that stores electricity or supplies electricity; and a driving motor 13 that receives electricity for driving. The fuel cell system further includes: a fuel cell electricity supplying path A provided between the fuel cell 12 and the driving motor 13; a battery electricity supplying path B extending from the battery 21 and connected to the fuel cell electricity supplying path A; and a circuit breaker 15 that is provided closer to the fuel cell 12 than a connecting point C of the fuel cell electricity supplying path A and the battery electricity supplying path B.