To provide a safe and space-saving earth leakage breaker having a simple structure.

In the magnet unit 1 of this earth leakage breaker, the magnet unit 1 is composed of at least a test button 2 to open and close an artificial leakage circuit, a test terminal 3 interlocked with the test button 2, a winding 4 in which a current flows when the artificial leakage circuit is closed, and a plunger 5 operated by work of the current, and a display button 9 to display leakage, a clip 7 to open and close the artificial circuit by working with the operation of the plunger 5 is provided, and the artificial leakage circuit is opened as soon as the earth leakage breaker is tripped to prevent the winding from being burned and to enable reverse connection of the earth leakage breaker.