A device for reversed operation of a first handle is provided. The first handle is of a circuit breaker. The device includes a housing that is attachable to the circuit breaker, and a lever that is rotatably attached to the housing. The lever includes a body, and an arm and a second handle each extending away from the body. The lever is movable in a first direction relative to the housing in response to a force at the second handle, such that when the housing is attached to the circuit breaker and the lever moves in the first direction relative to the housing, the first arm is configured to press against and move the first handle of the circuit breaker in a second direction relative to the housing, the second direction being away from the first direction.

The present disclosure relates to a circuit breaker having an energy releasing mechanism of an opening/closing mechanism part, and a circuit breaker according to an embodiment of the present invention comprises: an input latch locking device rotatably formed to restrict or release an input latch according to rotating angles thereof; an interlock movement rail which is installed on a cradle and in which an inspection position, a preparation position, and a driving position are configured; an interlock member for operating at least one among the input latch and a trip latch in a section excluding the inspection position, the preparation position, and the driving position while vertically moving in association with a relative movement of the interlock movement rail; and at least one link member connected between the interlock member and the input latch locking device and switching a linear movement in a vertical direction of the interlock member to a rotation movement, thereby rotating the input latch locking device.

A circuit protection apparatus has a first housing, a handle assembly installed in the first housing, and a tripping mechanism installed in the first housing. The handle assembly is connected to the tripping mechanism. The tripping mechanism has a first output end, an electromagnetic mechanism installed in the first housing. The electromagnetic mechanism has a movable second output end that is used for contacting with the tripping mechanism. The first housing is detachably mounted on the second housing. A moving contact assembly is installed in the second housing and the first output end is connected to the moving contact assembly for forming a main electrical connection when the first output end is in the first position and for breaking the main electrical connection when the first output end is in the second position.

A circuit breaker for an electrical device and an electrical system are provided. The circuit breaker includes a housing, at least one first busbar, at least one second busbar, a circuit board, and an actuating mechanism. The first busbar is coupled to a power supply side of the circuit breaker. The second busbar is coupled to a load side of the circuit breaker. The circuit board is arranged between the at least one first busbar and the at least one second busbar and includes an electrical component, two ends of the electrical component are respectively coupled to the first busbar and the second busbar, and the electrical component is adapted to act during occurrence of a line abnormality to cut off the electrical connection between the first busbar and the second busbar. The actuating mechanism is arranged between the first busbar and the power supply side of the circuit breaker.

A circuit breaker is configured to ensure electrical safety when working on its circuits. The circuit breaker comprises a housing with an exterior boundary. The housing includes an integrated Lock-Off feature. It is integrated to one or more housing components of the circuit breaker not as a separate component to achieve most simplicity and least space used as compared to an add-on accessory based Lock-Off feature. The integrated Lock-Off feature has a feature that is configured to receive a shackle or a shank of a padlock. The circuit breaker further comprises a built-in Lock-Off mechanism including a handle that is configured to move relative to the feature. The built-in Lock-Off mechanism in combination with the Lock-Off feature is configured to prevent handle from being turned ON with the use of padlock. The padlock prevents circuit breaker from turning ON by impeding the handle from moving to an ON-position.

An actuator is disposed on a face of a circuit breaker panel positioned at a switch lever of a circuit breaker for moving the switch lever. A shaft selectively moves between an extended position and a retracted positon. An arm extends substantially perpendicular to the shaft. A manually disconnectable coupling is between the shaft and the arm. The arm is configured to fit on the face in a position to automatically move the switch lever into an electrically open positon from an electrically closed position upon activation of the actuator. The manually disconnectable coupling disconnects the shaft from the arm before a user manually moves the switch lever back into the electrically closed position. The manually disconnectable coupling has a manually removable pin. The actuator is a liner actuator and can be a rotational actuator.

An operating mechanism with a second connecting rod assembly that includes a second crank pivotally disposed around a tenth axis, a third connecting rod, and a third crank pivotally disposed around an eleventh axis. The second crank is rotatably connected to the third connecting rod through an eighth shaft, the third connecting rod is rotatably connected to the third crank through a ninth shaft, a first connecting rod assembly is rotatably connected to the second crank through a seventh shaft, and all the shafts and the axes are spaced in parallel. The tenth axis or the eleventh axis coincides with a rotation axis of a moving contact mechanism, and the eighth shaft or the ninth shaft rotates the moving contact mechanism. The operating mechanism provides a plurality of modes of connection with the moving contact mechanism, thereby facilitating the design of a contact system of the circuit breaker.