Abstract: A high-stability miniature circuit breaker has a pivotal shaft having a first section, a second section and a shoulder. The diameter of the second section is larger than the first section. The shoulder diameter is larger than the second section. A pivoting lever on the first section limits the axial position of a protruding mesa relative to the shaft by contact fit between the mesa and a thrust surface on the second section. A pivoting latch is on the second section. A first end face fits to a support surface on the shoulder. A second end face fits to the protruding mesa at the other end. The latch controls a drive rod and the lever. A connecting rod separates from the latch when latch hasps are separated and the latch separates from the drive rod which slides along a groove of the lever.

Abstract: A circuit breaker includes a housing, wiring boards and terminals disposed within the housing, wherein the terminal comprises a screw, a press board and a wire trap provided with a incoming line hole and a wiring space; the screw passes through a threaded hole on the top end face of the wire trap to contact the press board which is able to lift up and down and is embedded in the wire trap; the wiring board traverses the wire trap, and divides the wiring space of the wire trap into two independent wiring spaces; a first line hole is provided on the housing at a position above the screw of the terminal; and the press board and the wire trap perform a relative displacement with the wiring board under the action of the screw, to compress the two independent wiring spaces so as to realize the connection between wires.

Abstract: A handle locking device for a modularized terminal electric appliance is presented. A housing base thereof can be assembled onto any outer side surface of the housing of an appliance through a connection mechanism. There are a horizontal pivoting door and a vertical pivoting door which can be unfolded or folded inside a door hole on a sliding member of the locking mechanism. When unfolded, the horizontal pivoting door mates with an appliance handle to block the reverse motion of the handle, and the vertical pivoting door and the horizontal pivoting door can mate to block the reverse motion of the unfolded horizontal pivoting door. The horizontal pivoting door is pivotally connected to the sliding member through a horizontal pivoting, and the vertical pivoting door is pivotally connected to the sliding member through a vertical pivoting.

Abstract: A high-stability miniature circuit breaker includes an operating mechanism, wherein a pivotal shaft of the operating mechanism fixed on a shell includes a first shaft section, a second shaft section and a shaft shoulder; the diameter of the second shaft section is larger than that of the first shaft section, and the diameter of the shaft shoulder is larger than that of the second shaft section. A lever is installed on the first shaft section through a first shaft hole in a pivoting way and used for limiting the axial position of a protruding mesa relative to the pivotal shaft through contact fit between the protruding mesa disposed on the lever and a thrust surface on the second shaft section.

Abstract: A circuit breaker includes a housing, wiring boards and terminals disposed within the housing, wherein the terminal comprises a screw, a press board and a wire trap provided with a incoming line hole and a wiring space; the screw passes through a threaded hole on the top end face of the wire trap to contact the press board which is able to lift up and down and is embedded in the wire trap; the wiring board traverses the wire trap, and divides the wiring space of the wire trap into two independent wiring spaces; a first line hole is provided on the housing at a position above the screw of the terminal; and the press board and the wire trap perform a relative displacement with the wiring board under the action of the screw, to compress the two independent wiring spaces so as to realize the connection between wires.

Abstract: A handle locking device for a modularized terminal electric appliance is disclosed. A housing base thereof can be assembled onto any outer side surface of the housing of an appliance through a connection mechanism. There are a horizontal pivoting door and a vertical pivoting door which can be unfolded or folded inside a door hole on a sliding member of the locking mechanism. When unfolded, the horizontal pivoting door mates with an appliance handle to block the reverse motion of the handle, and the vertical pivoting door and the horizontal pivoting door can mate to block the reverse motion of the unfolded horizontal pivoting door. The horizontal pivoting door is pivotally connected to the sliding member through a horizontal pivoting, and the vertical pivoting door is pivotally connected to the sliding member through a vertical pivoting.