Power-supply breaker apparatus

A power-supply breaker apparatus, comprising:

• a fuse provided between a power supply and a load in an electric circuit, the electric circuit becoming conductive through the fuse;
• an apparatus main body housing the fuse;
• a first bus bar whose one end is fixed to one fuse terminal of the fuse, the other end of the first bus bar being extended so as to be composed as one of a pair of main body side terminals;
• a second bus bar fixed to one of the power supply and the load, the other end of the second bus bar being extended so as to be composed as the other one of the pair of main body side terminals;
• a plug housing chamber housing a plug movably in a fitting/detaching direction in the apparatus main body;
• and
• a pair of plug side terminals being conductive with each other in the plug,
• wherein at least one of the first bus bar and the second bus bar is deflected freely in a direction crossing substantially perpendicularly to the fitting/detaching direction so that a distance between the pair of main body side terminals varies, and the plug moves in the flitting/detaching direction so that the pair of plug side terminals are freely fitted into and detached from the pair of main body side terminals.