A vacuum interrupter having a structure to trap running cathode tracks is disclosed. The interrupter includes a first electrode assembly and a second electrode assembly, at least one of which is moveable. The interrupter also includes a sidewall having a longitudinal axis. One or more trench structures are formed in at least one of the electrode assemblies. Each trench structure has an opening that faces the other electrode assembly in a direction that is parallel to the longitudinal axis, to trap the running cathode tracks to prevent them from getting close to the sidewall.

A contact of a vacuum interrupter comprises a contact body portion formed in the shape of a circular plate, having a contact surface in a flat shape on one surface thereof, and provided with a plurality of cut portions formed in a spiral shape from a center of the contact surface toward an outer side in a radial direction, and an inclination area formed between the contact surface and an outer circumferential surface of the contact body portion, wherein the inclination area is provided with multi-stage inclined portions each forming a multi-stage inclination along the outer side of the contact body portion in the radial direction.

A vacuum interrupter having a structure to trap running cathode tracks is disclosed. The interrupter includes a first electrode assembly and a second electrode assembly, at least one of which is moveable. The interrupter also includes a sidewall having a longitudinal axis. One or more trench structures are formed in at least one of the electrode assemblies. Each trench structure has an opening that faces the other electrode assembly in a direction that is parallel to the longitudinal axis, to trap the running cathode tracks to prevent them from getting close to the sidewall.

A vacuum bottle that is intended for an electrical switching device includes a cylindrical body of insulating material closed at each end respectively by a first metal cover and a second metal cover, and a mobile electrode that passes through the first cover and that cooperates with a fixed electrode between a closed position in which the two electrodes are in contact with each other and an open position in which the two electrodes are separated. The bottle includes the second cover corresponding to the fixed electrode of the vacuum bottle.

A vacuum bottle that is intended for an electrical switching device includes a cylindrical body of insulating material closed at each end respectively by a first metal cover and a second metal cover, and a mobile electrode that passes through the first cover and that cooperates with a fixed electrode between a closed position in which the two electrodes are in contact with each other and an open position in which the two electrodes are separated. The bottle includes the second cover corresponding to the fixed electrode of the vacuum bottle.

A process for producing a contact element for a vacuum switch is provided. In this process, a first powder-like mixture, including particles of a first and second conductive material, or a first pre-pressed, disc-shaped green body, is introduced into a pressing die. An inner pressing stamp is introduced into the die and a second powder of the first conductive material or a second powder-like mixture including, particles of the first conductive material or a second pre-pressed green body including the first conductive material, is introduced into an intermediate space. An outer pressing stamp is introduced into the intermediate space between the die and the inner pressing stamp. Pressing pressure is exerted on the outer and inner pressing stamps, forming a contact disc of the contact element, and a region forming a contact body or contact carrier of the contact element is created.

A vacuum valve according to embodiments of the present disclosure, comprising: an electrode having a first surface which a hollow part is formed on, which electrode spiral electrode slits which slantingly cross an axial direction are formed on outer circumference of, a conductor fixed on a second surface of the electrode, which second surface is opposite side of the first surface, a contact point having a first concavity which opens to the conductor side, which contact point is fixed on the first surface of the electrode, and a connecting plate whose resistivity is lower than one of the contact point, which connecting plate is disposed inside the first concavity, and connecting plate slits which extend inward from circumference as a starting point are formed on, wherein central axes of the connecting plate slits incline in a rotatory direction of the spiral of the electrode slits.

A vacuum valve according to embodiments of the present disclosure, comprising: an electrode having a first surface which a hollow part is formed on, which electrode spiral electrode slits which slantingly cross an axial direction are formed on outer circumference of, a conductor fixed on a second surface of the electrode, which second surface is opposite side of the first surface, a contact point having a first concavity which opens to the conductor side, which contact point is fixed on the first surface of the electrode, and a connecting plate whose resistivity is lower than one of the contact point, which connecting plate is disposed inside the first concavity, and connecting plate slits which extend inward from circumference as a starting point are formed on, wherein central axes of the connecting plate slits incline in a rotatory direction of the spiral of the electrode slits.