B-type electric leakage switch

The invention discloses a B-type electric leakage switch. The input end of a passive electric leakage module is used for sensing an alternating current electric leakage signal in an electric power circuit, and the output end of the passive electric leakage module is connected with the first end and the second end of a release; the input end of an active electric leakage module is used for sensing a direct-current electric leakage signal and an alternating-current electric leakage signal in an electric power circuit, and the output end of the active electric leakage module is connected with the first end of the release; and the second end of a tripping device is grounded. According to the invention, the second end of the release in the passive electric leakage module is connected with the grounding end in the active electric leakage module, so that the alternating current electric leakage module and the direct current electric leakage module can work independently, that is, when alternating current electric le