A remote-controlled mechanism according to an embodiment is used for coupling to a protective switching device to use a controllable drive device of the remote-controlled mechanism to actuate the coupled protective switching device. To this end, the remote-controlled mechanism includes: an actuating element operatively connectable to an actuating element of the coupled protective switching device and actuatable either by a remotely controllable drive device of the remote-controlled mechanism or manually; one or more sensor devices for capturing position data relating to a position of the actuating element of the remote-controlled mechanism; and a controller for evaluating the captured position data and for controlling the drive device via control commands. The controller is designed to disable the drive device upon an evaluation of the position data and/or of the control commands revealing that the actuating element of the remote-controlled mechanism has been switched off manually.

A remote-controlled mechanism according to an embodiment is used for coupling to a protective switching device to use a controllable drive device of the remote-controlled mechanism to actuate the coupled protective switching device. To this end, the remote-controlled mechanism includes: an actuating element operatively connectable to an actuating element of the coupled protective switching device and actuatable either by a remotely controllable drive device of the remote-controlled mechanism or manually; one or more sensor devices for capturing position data relating to a position of the actuating element of the remote-controlled mechanism; and a controller for evaluating the captured position data and for controlling the drive device via control commands. The controller is designed to disable the drive device upon an evaluation of the position data and/or of the control commands revealing that the actuating element of the remote-controlled mechanism has been switched off manually.

An electric operating device for a circuit breaker that includes a housing, a transmission mechanism is installed in the housing, and a side wall of the housing serves as an operation surface and is provided with a first sliding groove communicated with the interior of the housing; a sliding rod is installed in the housing; a driving member controlled by the transmission mechanism is installed on the sliding rod; the driving member is provided with a closing operation portion and an opening operation portion; the driving member passes through the first sliding groove and extends out of the housing; the driving member moves along the sliding rod under the control of the transmission mechanism; and the closing operation portion and the opening operation portion operate a handle of the circuit breaker to be closed and opened respectively.

A circuit breaking apparatus comprises a circuit breaker, a motor drive system, and a controller. The circuit breaker is electrically connectable to a power line. The motor drive system is mechanically coupled to the circuit breaker and configured to operate the circuit breaker such as to perform a movement including at least an opening movement from a closed position to an open position, thereby electrically interrupting the power line. The controller includes a model of at least one of the motor drive system and the circuit breaker.

The controller is configured to receive reference travel curve information of the movement; generate actuator information from the reference travel curve information based on the model; and output the actuator information.

A circuit breaking apparatus comprises a circuit breaker, a motor drive system, and a controller. The circuit breaker is electrically connectable to a power line. The motor drive system is mechanically coupled to the circuit breaker and configured to operate the circuit breaker such as to perform a movement including at least an opening movement from a closed position to an open position, thereby electrically interrupting the power line. The controller includes a model of at least one of the motor drive system and the circuit breaker.

The controller is configured to receive reference travel curve information of the movement; generate actuator information from the reference travel curve information based on the model; and output the actuator information.

A remote controlled miniature circuit breaker includes a helical gear that engages with mating teeth of a slider plate coupled to main contacts of the circuit breaker, the helical gear including a flat portion to allow the sliding plate to slide past the helical gear. A unidirectional motor responds to an external signal to drive the helical gear while engaging the mating teeth of the slider plate, thereby moving the slider plate to close the main contacts. The motor is configured to respond to an external signal to resume the unidirectional rotation of the helical gear to position the flat portion of the gear to allow the slider plate to slide past the helical gear and contact a kicker lever to thereby open the main contacts. A trip lever pivotally mounted separately from the kicker lever, pushes the kicker lever to open the main contacts in a trip operation.

A remote controlled miniature circuit breaker includes a helical gear that engages with mating teeth of a slider plate coupled to main contacts of the circuit breaker, the helical gear including a flat portion to allow the sliding plate to slide past the helical gear. A unidirectional motor responds to an external signal to drive the helical gear while engaging the mating teeth of the slider plate, thereby moving the slider plate to close the main contacts. The motor is configured to respond to an external signal to resume the unidirectional rotation of the helical gear to position the flat portion of the gear to allow the slider plate to slide past the helical gear and contact a kicker lever to thereby open the main contacts. A trip lever pivotally mounted separately from the kicker lever, pushes the kicker lever to open the main contacts in a trip operation.

A circuit breaker that includes a circuit breaker housing, a button mechanism arranged inside the circuit breaker housing, an operating mechanism connected with the button mechanism, a movable contact connected with the operating mechanism, a static contact co-operated with the movable contact, the button mechanism being operable to enable the circuit breaker to switch on/switch off by means of the operating mechanism; the circuit breaker also includes an electric mechanism arranged inside the circuit breaker housing, the electric mechanism is drivingly co-operated with the button mechanism or the operating mechanism, the electric mechanism can actuate the circuit breaker to switch on/switch off by means of the operating mechanism, or the electric mechanism can actuate the circuit breaker to switch on/switch off by means of the cooperation of the button mechanism.

A circuit breaker that includes a circuit breaker housing, a button mechanism arranged inside the circuit breaker housing, an operating mechanism connected with the button mechanism, a movable contact connected with the operating mechanism, a static contact co-operated with the movable contact, the button mechanism being operable to enable the circuit breaker to switch on/switch off by means of the operating mechanism; the circuit breaker also includes an electric mechanism arranged inside the circuit breaker housing, the electric mechanism is drivingly co-operated with the button mechanism or the operating mechanism, the electric mechanism can actuate the circuit breaker to switch on/switch off by means of the operating mechanism, or the electric mechanism can actuate the circuit breaker to switch on/switch off by means of the cooperation of the button mechanism.

A circuit breaker can include a moveable electrical contact configured to be moved between an open position and a closed position, and a lever assembly configured to prevent the progressive closing of the moveable electrical contact to the closed position such that the lever assembly is configured to cause snap action closing of the moveable electrical contact at a charged position of a motorized slider.