A first support member and a second support member are provided in a rotation support device and a worm gear is rotated in a state that the second support member is inserted in the first support member, whereby the worm gear is prevented from being shaken through the first support member and the second support member and heat transmission to a housing due to rotation of the worm gear to damage the housing is prevented.

An electric circuit breaker including a spring energy store drive having a spring and a manual winding device for manually tensioning the spring. In accordance with an embodiment, the manual winding device includes a rotatable latching disk, a latching pawl arranged next to the disk, and a manual actuating device connected to the latching pawl. The latching pawl is guidable into a latching toothed portion of the disk. The pawl is also capable of moving, owing to an actuation of the actuating device. As a result, the disk is capable of rotating along a preset desired rotation direction for tensioning the spring. The latching toothed portion is asymmetrical and a force transmission from the pawl onto the disk is possible along the desired rotation direction. The disk slides along the pawl when the disk rotates along the desired rotation direction more quickly than the pawl.

A pin assembly is for a charging ram assembly of an electrical switching apparatus. The charging ram assembly has a biasing element, a ram member structured to bias the biasing element, and a plate member. The pin assembly includes a pin member structured to extend through the biasing element and the plate member, the pin member having an end portion;

a first collar member and a second collar member coupled to the end portion; and a securing apparatus including a retaining member coupled to the first collar member and the second collar member in order to prevent the pin member from moving with respect to the first collar member and the second collar member.

A pin assembly is for a charging ram assembly of an electrical switching apparatus. The charging ram assembly has a biasing element, a ram member structured to bias the biasing element, and a plate member. The pin assembly includes a pin member structured to extend through the biasing element and the plate member, the pin member having an end portion; a first collar member and a second collar member coupled to the end portion; and a securing apparatus including a retaining member coupled to the first collar member and the second collar member in order to prevent the pin member from moving with respect to the first collar member and the second collar member.

A pin assembly is for a charging ram assembly of an electrical switching apparatus. The charging ram assembly has a biasing element, a ram member structured to bias the biasing element, and a plate member. The pin assembly includes a pin member structured to extend through the biasing element and the plate member, the pin member having an end portion; a first collar member and a second collar member coupled to the end portion; and a securing apparatus including a retaining member coupled to the first collar member and the second collar member in order to prevent the pin member from moving with respect to the first collar member and the second collar member.

A failure prediction assembly is structured to monitor circuit breaker assembly sub-assemblies and their component's characteristics. The failure prediction assembly includes a sensor supported D-shaft and a sensor assembly including a housing and a number of sensors. The sensor assembly housing defines a D-shaft passage. A control unit is in electronic communication with the sensor assembly. The sensor assembly housing is coupled to the circuit breaker sidewalls with the sensor assembly housing D-shaft passage aligned with the circuit breaker sidewall D-shaft passages. The sensor supported D-shaft is rotatably coupled to the sensor assembly with the sensor supported D-shaft disposed through said sensor assembly housing D-shaft passage.

The control device possesses a rigid main part combining most of the functional elements of this type of control device. It is made up of two portions of a rotary shaft, having placed between them a cam and a support arm that are connected together by a pivot that is offset relative to the axis of rotation. A toothed wheel having an inner set of teeth is placed around the support arm that is provided with a rachet system. The toothed wheel has an outer set of teeth-driven by a motor, via an intermediate gearwheel. The pivot controls the compression of the actuator spring by the assembly rotating. The device is applicable to high and medium voltage circuit breakers and switches.

The present application relates to a clutch mechanism for an energy storage device including a load gear, a drive gear, a one-way bearing, a bushing, and a gear shaft including a gear portion and a clutch portion. The gear shaft includes multiple cylinders, and a push rod, a rotary sleeve and an elastic element located in a cavity of the gear shaft. The push rod includes a push rod slide hole and a push rod connecting hole, for connecting to the gear shaft and the rotary sleeve, respectively. A press block is fixed to the drive gear, the press block being capable of pushing the push rod to slide axially, so as to unlock or lock the bushing and the gear shaft. A gas insulated circuit breaker using such a clutch mechanism is also disclosed.

A component monitoring system structured to monitor circuit breaker assembly component characteristics is provided. The component monitoring system includes a record assembly, a number of impulse sensor assemblies, a comparison assembly, and an output assembly. The record assembly includes selected nominal data for a selected circuit breaker component. The impulse sensor assemblies are structured to measure a number of actual component characteristics for a substantial portion of the circuit breaker assembly and to transmit actual component characteristic output data. The comparison assembly is structured to receive an electronic signal from the record assembly and the impulse sensor assemblies, to compare each impulse sensor assembly actual component characteristic output data to the selected nominal data and to provide an indication signal as to whether the impulse sensor assembly output data is acceptable when compared to the selected nominal data. The output assembly includes a communication assembly and an output device.

A high current switching device includes an electrical switch assembly and an input shaft operatively connected to the electrical switch assembly. An actuator assembly is attached to the input shaft and is configured to move the input shaft to operate the electrical switch assembly. The actuator assembly includes a mechanical advantage device operatively attached to the input shaft. An actuator is coupled to the mechanical advantage device such that movement of the actuator causes movement of the input shaft to operate the electrical switch assembly. The mechanical advantage device is configured to decrease an amount of force required to move the input shaft by the actuator.