The invention discloses a power ground fault protection circuit, comprising a power circuit, an electric leakage ground detection circuit, a
signal amplifying and shaping circuit, and
single chip microcomputer control circuit, a power detection and work instruction circuit, a
tripping mechanism
control circuit, a reverse wiring detection and execution circuit, a
wireless network circuit and an automatic reset circuit, wherein the first filtering and
voltage stabilizing circuit of the power circuit is connected with the electric leakage ground detection circuit; the second filtering and
voltage stabilizing circuit of the power circuit is connected with the
signal amplifying and shaping circuit and the
single chip microcomputer control circuit; the electric leakage ground detection circuit, the
signal amplifying and shaping circuit and the
single chip microcomputer control circuit are sequentially connected; the single
chip microcomputer control circuit is connected with the power detection and work instruction circuit, the
tripping mechanism control circuit, the reverse wiring detection and execution circuit and the automatic reset circuit respectively; and the
wireless network circuit is connected with the power circuit and the single
chip microcomputer control circuit respectively. The power ground fault protection circuit achieves
remote control on a ground fault breaker through the
wireless network circuit and the automatic reset circuit, and is of convenient reset operation and high safety.