The invention provides an electronic type leakage circuit breaker, which comprises a shell. A partition plate arranged in the shell divides the shell into two layers of cavities. The two layers of cavities are composed of a first cavity and a second cavity. The first cavity is used for placing an L-pole circuit breaker module. The second cavity is used for placing an N-pole circuit breaker module and a leakage protection module of the electronic type leakage circuit breaker. Therefore, the internal space of a product is fully utilized. Meanwhile, through improving the rated current, the high temperature rise and other unqualified phenomena can be avoided. Therefore, the safe current-carrying capacity of the electronic type leakage circuit breaker is ensured, and the rated current of the electronic type leakage circuit breaker reaches 63A.