Abstract: The invention discloses a power cord leakage detection and protection circuit, comprising a live wire, a neutral wire and a tripping coil, wherein a controlled switch controlled by the tripping coil is respectively provided on the live wire and the neutral wire; a shielded wire is respectively provided outside the live wire and the neutral wire; tail ends of the two shielded wires are connected; a shielded wire detection circuit respectively connected to head ends of the two shielded wires is provided between the live wire and the neutral wire for detecting whether the shielded wire is cracked; and the shielded wire detection circuit is connected with a control circuit for controlling the tripping coil to disconnect the controlled switch when the shielded wire is detected to be cracked, preventing the wire core from being exposed after the shielded wire is broken and the short-circuiting between the live wire and the neutral wire to cause a fire accident.

Abstract: A power plug, including: a shell, the shell having two sides, a reset button and a test button protruding from the first side, and a live wire pin and a neutral wire pin protruding from the second side; a circuit board; a stationary contact; a movable contact; a tripping device; a cross arm; and a push block. The stationary contact is connected with the live wire pin and the neutral wire pin; the movable contact can be connected to or disconnected from the stationary contact. The tripping device includes a sliding pedestal and a sliding part and controls the connection between the movable contact and the stationary contact. An elastic member is disposed on the push block. An ejector spring is disposed on one end of the movable armature. A reset spring is disposed between the sliding part and the sliding pedestal.

Abstract: A plug including a shell and a mounting body disposed inside the shell. The mounting body is provided with a first movable contact spring and a second movable contact spring, a phase contact and a zero contact, and a button assembly. A transverse block disposed above the first movable contact spring and the second movable contact spring includes a phase terminal and a zero terminal. The button assembly includes an electric magnet disposed on the mounting body and a sliding part having a cavity. The cavity of the sliding part is provided with a reset spring. A hook is disposed in a lower part of the cavity. The transverse block is connected with a pull block. An upper part of the pull block is connected with the electric magnet. The center of the pull block includes a limiting hole for accommodating the hook.

Abstract: The present invention discloses a power plug providing leakage protection comprising a casing, reset button and test button provided to the surface of the top of the casing; wherein movable springs respectively connected to power supply live wire and neutral wire pins are fixedly provided to the bottom part of a circuit board, movable contact points have separate electrical connections with free ends of the movable springs, stationary contact points corresponding to the movable contact points are provided to the circuit board and connected to a loading power supply cable; and a tripping device capable of contacting or disconnecting the movable and stationary contact points is provided inside the casing. The present invention is safe; has strong protective performance, simple structure, and reasonable design, and is safe, suited for mass production, and able to detect a power cable leakage failure and promptly sever the loaded connection with the power supply.

Abstract: The present invention discloses a power plug providing leakage protection comprising a casing, reset button and test button provided to the surface of the top of the casing; wherein movable springs respectively connected to power supply live wire and neutral wire pins are fixedly provided to the bottom part of a circuit board, movable contact points have separate electrical connections with free ends of the movable springs, stationary contact points corresponding to the movable contact points are provided to the circuit board and connected to a loading power supply cable; and a tripping device capable of contacting or disconnecting the movable and stationary contact points is provided inside the casing. The present invention is safe; has strong protective performance, simple structure, and reasonable design, and is safe, suited for mass production, and able to detect a power cable leakage failure and promptly sever the loaded connection with the power supply.