The present disclosure relates to a circuit breaker comprising: a circuit breaking part in which contact points of a fixed contact and a movable contact are in contact with each other; and an energy accumulation part for accumulating energy of a closing spring for controlling contact between the fixed contact and the movable contact, wherein the energy accumulation part comprises: an electromotive energy accumulation part; and a manual energy accumulation part separated from the electromotive energy accumulation part by a manual energy accumulation spring, and engaged with the electromotive energy accumulation part by unit of external pressure so as to transmit an inputted rotational force to the electromotive energy accumulation part, thereby accumulating the energy of the closing spring.

A mounting structure for an energy storage assembly of a circuit breaker comprises an energy storage lever and an energy storage spring, wherein one end of the energy storage lever is an energy storage end which is connected with the energy storage spring, and the other end of the energy storage lever is a driving end. An external force can be applied to the driving end, such that the energy storage lever rotates around a lever fulcrum in the middle of the energy storage lever, thereby extruding the energy storage spring at the energy storage end to finish energy storage. One end of the energy storage spring is connected and mounted with the energy storage lever, and the other end of the energy storage spring is mounted in a base support. An energy storage mounting shaft which can be considered as a rotating fulcrum is also arranged in the middle of the energy storage lever. The driving end is stressed, such that the energy storage lever rotates around the energy storage mounting shaft. The mounting structure for the energy storage assembly of the circuit breaker, which is provided by the present invention, is simple in mounting process, stable in connection structure and high in assembly accuracy.

An energy storage operation mechanism for a circuit breaker comprises a side plate assembly, a connecting rod assembly, a cam assembly, an energy storage assembly, a rotating shaft assembly and a control assembly. A rotatable driving shaft is mounted in the side plate assembly. The connecting rod assembly and the cam assembly are mounted on the driving shaft. The energy storage assembly and the rotating shaft assembly are mounted at one side of the driving shaft, and the control assembly is mounted at the other side of the driving shaft. The connecting rod assembly is connected with the rotating shaft assembly. The cam assembly can be in contact and connection with the energy storage assembly to push the energy storage assembly to store energy. The control assembly can be connected with the connecting rod assembly and the cam assembly in a latching manner. The energy storage operation mechanism for the circuit breaker, which is provided by the present invention, is compact in structure and high in reliability.

A spring operation device includes a closing shaft rotating to apply closing driving force to a movable contactor of a circuit breaker; a breaking shaft connected to the closing shaft in an axial direction and rotating to apply breaking driving force to the movable contactor of a circuit breaker; a plurality of springs having one ends connected to the closing shaft and the breaking shaft and the other ends fixed in position and provided along circumferences of the closing shaft and the breaking shaft in order to transmit elastic restoring force to the closing shaft and the breaking shaft to rotate the closing shaft and the breaking shaft; and a power transmission unit connecting the closing shaft and the breaking shaft when a closing operation is performed and releasing a connection between the closing shaft and the breaking shaft when a breaking operation is performed.

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.

An energy accumulator (15) for or in an on-load tap changer (10) comprises a motor (11) with an output shaft (12) and a load diverter switch (13) with an input shaft (14), comprising an elastic storage element (17); a transmission coupled to the storage element (17) and having an input hub (201) that can be rotationally fixed to the output shaft (12); an output hub (231) that can be rotationally fixed to the input shaft (14); and a variable transmission (20, 21) interposed between the input hub (201) and the storage element (17).

A high energy spring drive to control a high voltage circuit breaker is described. The high energy spring drive includes a closing assembly positioned at a first end and an opening assembly positioned at a second end, a charging assembly positioned between the closing and opening assembly, and a transmission assembly. The closing and opening assembly control the closing and opening of circuit breaker. The charging assembly includes a worm wheel arrangement coupled to a motor to transfer torque to a motor shaft, to energize the closing assembly, a decoupling mechanism to decouple the worm wheel arrangement from the motor shaft on energization of the closing assembly, and a cam-follower mechanism. The transmission assembly actuated by the follower of the cam-follower mechanism is to electrically close a circuit breaker when the follower rotates in a first direction and electrically open the circuit breaker when the follower rotates a second direction.

A transmission mechanism includes a link lever, a fan-shaped lever, a spring mechanism and a thrust shaft pin. An outer end of the link lever includes a pin hole and an inner end includes a chute. A cam shaft pin passes through the chute and moves in the chute to drive the link lever when a motor cam rotates. A roller is mounted between the pin hole and the chute. The fan-shaped lever is connected to a main shaft and includes a first chute. The top of the spring mechanism includes a hole. The thrust shaft pin passes through second chutes on two side plates, the first chute, the hole, and the pin hole and links the link lever, the fan-shaped lever and the spring mechanism. The thrust shaft pin compresses the spring mechanism to store energy and drives the fan-shaped lever to rotate and a contact to move.

A stored energy assembly is for an electrical switching apparatus. The electrical switching apparatus includes a housing and a mount coupled to the housing. The stored energy assembly includes: a ratchet assembly having: a first ratchet member, a second ratchet member, and a shaft extending through the first ratchet member and the second ratchet member, the shaft being structured to extend through the mount; a stored energy mechanism coupled to the shaft; at least one charging mechanism structured to charge the stored energy mechanism in order to store energy; and a clutch assembly including a link assembly cooperating with the first ratchet member and the second ratchet member in order to transmit energy from the charging mechanism to the stored energy mechanism.