To provide a leakage breaker which allows a user to easily understand whether the cause of trip is leakage or loosening of terminal screws.
At terminals 3, 4, poor connection due to loosening of terminal screws 5 is detected. A first electromagnetic device for opening a main contact when a leakage current flows, and a second electromagnetic device for opening a main contact when poor connection of the terminals 3, 4 is detected are provided in a breaker case 2. A leakage display member 12 displaying the trip state by the first electromagnetic device, and a poor connection display member 14 displaying the trip state by the second electromagnetic device are provided on both sides of a handle 11. The second electromagnetic device includes an electromagnet for driving a contact trip member, and a linkage member for moving the poor connection display member 14 from a non-display position to a display position by using the power of the electromagnet. The linkage member is coupled with the handle 11, and the poor connection display member 14 is moved from a display position to a non-display position by means of the handle 11 via the linkage member.
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