According to an aspect of the present invention, there is provided a movable contact assembly for a circuit breaker, which includes a fixed contact, a connector formed to protrude from one side of a terminal connected to a load or a power source, a plurality of movable contacts pivotably installed at the connector through a connector pin and configured to be contactable to or separable from the fixed contact, a side holder pivotably installed at the connector through the connector pin, a catch pivotably installed at the connector, supported on the side holder, and configured to restrict a rebound phenomenon of the plurality of movable contacts when current limiting interruption occurs, and a pressurizing protrusion formed at a lower portion of each of the plurality of movable contacts and configured to push the catch when the current limiting interruption occurs.

A switching device having a damping element for a contact system during abrupt switching on, wherein the contact system has a contact slide and a switching piece movably guided therein, and the movable switching piece is mounted opposite a fixed switching piece, where the contact slide has at least one projection that is operatively connected to the damping element when the switching device is switched on abruptly.

An operating mechanism including a number of biasing elements and a number of linkage members is provided. The linkage members are operatively coupled to each other and each are movable between a second configuration, an initial tripped configuration, a rebound configuration, and a final tripped configuration. The biasing elements are operatively coupled to the number of linkage members and bias the number of linkage members to the final, first configuration. A stop member is coupled to one of the linkage members. The stop member moves with the associated linkage member. The stop member is positioned to contact a stop surface when the linkage members are in the rebound configuration. Contact between the stop member and the stop surface substantially arrests the motion of the linkage members.

A pole shaft catch assembly is for an electrical switching apparatus, such as a circuit breaker. The circuit breaker includes a housing, separable contacts enclosed by the housing, and an operating mechanism for opening and closing the separable contacts. The operating mechanism includes a pole shaft pivotably coupled to the housing and a yoke assembly coupled to the pole shaft. The pole shaft catch assembly includes a catch arm. The catch arm moves between an engaged position in which the catch arm engages the yoke assembly to restrict movement of the yoke assembly and the pole shaft, and a disengaged position in which the catch arm disengages the yoke assembly. A biasing element biases the catch arm toward the disengaged position. A trigger translates movement of the yoke assembly into movement of the catch arm.

A overload protection switch with a reverse restart switching structure that has a seesaw lampshade provided with a protruding block which extending downward from the outside of the seesaw lampshade to ensure that the seesaw lampshade and the moving rod are accurately positioned in the ON and OFF positions in the housing to form a three-stage switching type with bidirectional positioning and forms an overload protection switch that can continuously maintain sufficient insulation distance and does not reduce the insulation distance due to fatigue decay of the binary alloy conductive plate.

A pole shaft catch assembly is for an electrical switching apparatus, such as a circuit breaker. The circuit breaker includes a housing, separable contacts enclosed by the housing, and an operating mechanism for opening and closing the separable contacts. The operating mechanism includes a pole shaft pivotably coupled to the housing and a yoke assembly coupled to the pole shaft. The pole shaft catch assembly includes a catch arm. The catch arm moves between an engaged position in which the catch arm engages the yoke assembly to restrict movement of the yoke assembly and the pole shaft, and a disengaged position in which the catch arm disengages the yoke assembly. A biasing element biases the catch arm toward the disengaged position. A trigger translates movement of the yoke assembly into movement of the catch arm.

A switching device having a damping element for a contact system during abrupt switching on, wherein the contact system has a contact slide and a switching piece movably guided therein, and the movable switching piece is mounted opposite a fixed switching piece, where the contact slide has at least one projection that is operatively connected to the damping element when the switching device is switched on abruptly.

A pole shaft catch assembly is for an electrical switching apparatus, such as a circuit breaker. The circuit breaker includes a housing, separable contacts enclosed by the housing, and an operating mechanism for opening and closing the separable contacts. The operating mechanism includes a pole shaft pivotably coupled to the housing and a yoke assembly coupled to the pole shaft. The pole shaft catch assembly includes a catch arm. The catch arm moves between an engaged position in which the catch arm engages the yoke assembly to restrict movement of the yoke assembly and the pole shaft, and a disengaged position in which the catch arm disengages the yoke assembly. A biasing element biases the catch arm toward the disengaged position. A trigger translates movement of the yoke assembly into movement of the catch arm.

The present disclosure relates to an anti-rebound protection device and a circuit breaker comprising the same. An operating mechanism of the circuit breaker comprises a housing, a main shaft arranged in the housing, and an output lever connected to the main shaft. The anti-rebound protection device comprises: a control cam; a control lever being rotatable relative to the housing, and provided with a first stopper for abutting against the control cam; and a locking mechanism comprising a locking member rotatably connected to the output lever and a second stopper provided on the control lever.

An anti-rebound protection device and a circuit breaker comprising the same is disclosed. The anti-rebound protection device for the circuit breaker includes an operating mechanism. The operating mechanism of the circuit breaker includes a housing, a main shaft arranged in the housing, and an output lever connected to the main shaft. The anti-rebound protection device includes a control cam; a control lever being rotatable relative to the housing, and provided with a first stopper for abutting against the control cam; and a locking mechanism comprising a locking member rotatably connected to the output lever and a second stopper provided on the control lever.