Abstract: A circuit breaker includes a capacitive voltage sensor located within its insulating casing. The voltage sensor includes a capacitor located between the terminals of the circuit breaker adjacent a low potential surface provided by a coil of a current sensor. The capacitor is dome shaped. The voltage sensor does not appreciably increase the size or weight of the circuit breaker and is reliable and accurate.

Abstract: A vacuum valve includes: a vacuum vessel; a cylinder; a partition wall separating an inside of the vacuum vessel from an inside of the cylinder; a movable conductor penetrating the partition wall being movable in an axial direction; a fixed contact fixed inside the vacuum vessel; a moving contact integrated with the movable conductor and being capable of separating from the fixed contact and coming into contact with the fixed contact in association with movement of the movable conductor; a lid that covers an end of the cylinder, the end being on a side opposite to the partition wall; a connecting rod penetrating the lid and coupled to the movable conductor via an insulating rod as an insulator; and a holder that holds the connecting rod while preventing movement of the connecting rod toward the fixed contact in a state where the moving contact is separated from the fixed contact.

Abstract: Various embodiments include a method for producing a ceramic insulator for a high-voltage or medium-voltage switching system comprising: attaching a base material for an equipotential layer between two axially symmetrical ceramic structural elements; disposing the electrically conductive equipotential layer between the two ceramic structural elements; and joining the two ceramic structural elements to form a unitary body along a symmetry axis of a first of the two elements.

Abstract: A pole component (and circuit breakers including such a pole components) may be provided that include an upper terminal; a lower terminal disposed a predetermined distance away from the upper terminal; a breaker part assembly including a fixed electrode, which is electrically connected to the upper terminal, a movable electrode, which is selectively connected to the fixed electrode, and a current conducting portion which is fixed to the movable electrode and electrically connected to the lower terminal; an outer housing having an open lower surface and accommodating the upper terminal, lower terminal and breaker part assembly; and an inner housing which is detachably disposed between the outer housing and breaker part assembly.

Abstract: A vacuum interrupter including a cylindrical insulator, a first end cap sealed to one end of the insulator and a second end cap sealed to an opposite end of the insulator to provide a vacuum chamber. The vacuum interrupter further includes a fixed contact stem extending through the first end cap and having a contact positioned within the chamber, and a movable contact stem extending through the second end cap and having a contact portion positioned within the chamber. A first vapor shield is formed around the fixed contact stem so as to define a gap between the fixed contact and the insulator and a second vapor shield is formed around the movable contact so as to define a gap between the movable contact and the insulator.

Abstract: A three phase switchgear or control gear includes: at least one compartment; a plurality of components for a first phase; a plurality of components for a second phase; and a plurality of components for a third phase. The plurality of components for the first phase, the plurality of components for the second phase, and the plurality of components for the third phase each include a main busbar, a three position linear or rotational movement disconnector switch, a single phase circuit breaker pole, and a cable connection. The plurality of components for the first phase, the plurality of components for the second phase, and the plurality of components for the third phase are housed in the at least one compartment.

Abstract: The invention refers to a circuit breaker (300A) comprising a vacuum interrupter (301) for a gas insulated switchgear. Moreover, the invention refers to a gas insulated switchgear comprising at least one circuit breaker (300A) and/or a disconnector pole. The circuit breaker (300A) has a vacuum interrupter (301) comprising a first movable contact (302), a second stationary contact (303) and a first center axis (304).

Abstract: A ceramic insulator for vacuum interrupters extends along a longitudinal extent and forms a cavity in said longitudinal extent. The cavity has a first opening on a first end of the longitudinal extent and a second opening on a second end of the longitudinal extent. The openings are designed so that they can be sealed in a gas-tight manner using appropriate connections. The sealed first opening is designed to guide at least one fixed contact into the cavity, and the sealed second opening is designed to guide at least one moving contact into the cavity. The ceramic insulator has, on an inner face of the cavity, one or multiple electrically conductive discharge path interrupters extending perpendicularly to the longitudinal extent of the ceramic insulator.

Abstract: A power device, which includes: an energizing conductor; a power generation unit configured to generate power that is induced by a magnetic flux of a current flowing through the energizing conductor; a power device unit configured to use the power generated in the power generation unit as a power source; a short-circuit switch capable of short-circuiting an output from the power generation unit; and a sealed container in which the energizing conductor, the power generation unit and the power device unit are included, and an insulating fluid is enclosed in the sealed container. This power device is provided as a highly reliable power device, which is used in an AC power system and does not induce an excessive voltage in the power generation unit when the power device unit is stopped in the state where the energized state of the energizing conductor is maintained.

Abstract: Disclosed is a curable composition comprising an epoxy resin and a filler composition, a cured product obtained by curing said curable composition as well as the use of the cured products as electrically insulating construction material for electrical or electronic components.

Abstract: An arc chamber for a circuit breaker has first and second mounting bodies. The mounting bodies are disposed at the ends of an electrically insulating insulation section of the arc chamber. The insulation section is formed of at least two shell-shaped partial sections. The partial sections are curved concavely relative to a longitudinal axis of the arc chamber. A gap is formed between the edges of the bodies of the partial sections.

Abstract: The invention relates to a vacuum bulb (1) including a sealed chamber (4), two electrical contacts (7, 7?) and a dielectric coating (12) which covers the outer surface of the chamber (4). This coating (12) includes at least two layers, an overmoulding layer (14) made of a synthetic material and an intermediate layer (13) made of silicone interposed between the outer surface of the chamber (4) and the overmoulding layer (14). According to the invention, the intermediate layer (13) is discontinuous and localised on the metal portions of the chamber (4) so as to cover at least partially the outer surface of the metal portions, where the silicone of the intermediate layer (13) includes hollow bodies, where these hollow bodies are compressible, and have a skin made of a thermoplastic material. The invention also relates to a switchgear including at least one such vacuum bulb (1), in particular a circuit-breaker pole.

Abstract: According to one embodiment, a tank-type vacuum circuit breaker includes a tank, a vacuum valve provided in the tank, an insulating layer provided on an outer circumference of the vacuum valve, having a fixed side interface connecting portion and a movable side interface connecting portion, a grounding layer provided on an outer circumference of the insulating layer, a fixed side bushing having an interface connecting portion connected to the fixed side interface connecting portion, a fixed side porcelain tube to house the fixed side bushing, a movable side bushing having an interface connecting portion connected to the movable side interface connecting portion, a movable side porcelain tube to house the movable side bushing, and insulation gas filled in the tank, at an approximately atmospheric pressure.

Abstract: An electrode assembly for a circuit breaker is provided. The electrode assembly includes a conductive assembly and a heat transfer assembly. The conductive assembly includes a stem portion and a contact portion. The heat transfer assembly includes a number of elongated bodies, a first heat transfer surface, and a second heat transfer surface. The first heat transfer surface is disposed on the conductive assembly. Each heat transfer assembly body includes a second heat transfer surface. Each heat transfer assembly body is coupled to the conductive assembly with the first heat transfer surface coupled to a number of second heat transfer surfaces.

Abstract: A vacuum interrupter is disclosed with transition areas between metal housing parts and ceramic housing parts covered by insulating material. To enhance dielectric performance and field grading behaviour, the insulating material can extend as a tube or a multilayer tube design over at least nearly a complete length of the vacuum interrupter or vacuum device arrangement. The insulating material can be filled or at least covered at an inner surface which comes into close contact with the vacuum interrupter or vacuum device surface, with metal and/or conductive metal oxides.

Abstract: In order to improve cooling performance of a switch unit or switchgear equipped with the switch unit, the switch unit includes a switch having a movable electrode and a fixed electrode and is casted as one body with a resin, the resin is provided with resin fins, and the thickness of the resin fin is changed so that the resin fin has a thickness sloped in the longitudinal direction of the resin fin.

Abstract: The disclosure relates to a vacuum chamber including at least one ceramic isolating cylinder with two face ends. At least one of the two face ends of the ceramic isolating cylinder is closed by a metallic cover including an outer and an inner part. A distal end of the outer part of the metallic cover is thinner relative to the remainder of the outer part of the metallic cover and forms a metallic lid. The metallic lid is connected to at least one of the two face ends of the ceramic isolating cylinder in a vacuum tight manner. The metallic cover can be formed in one piece and fits with the inner part of the metallic cover at an inner girthed area of the ceramic isolating cylinder to realize a self-centering of the metallic lid to at least one of the two face ends of the ceramic isolating cylinder.

Abstract: Capacitors (5a, 5b) are provided in the insulators of bushings (4a, 4b), respectively. One ends of the capacitors (5a, 5b) are connected to central conductors (3a, 3b) side, and the other ends are connected to a tank (1) side at the ground potential. When a discharge signal from the outside of the tank (1) reaches the capacitors (5a, 5b) through the central conductors (3a, 3b), the capacitors (5a, 5b) work as a filter to attenuate and prevent the signal in the frequency band of the discharge waveform from propagating to the inside of the tank (1). When an antenna (7) placed in the tank (1) receives a signal in the frequency band of the discharge waveform, a discharge detection unit (20) determines that a discharge inside the tank has been detected.

Abstract: A tank-type vacuum circuit breaker includes: a pressure tank; an insulating frame that is detachably supported by a support member provided in the pressure tank using a coupling; a vacuum interrupter that is supported by the insulating frame and includes a stationary electrode and a moving electrode; a stationary-electrode side terminal that is connectably/disconnectably connected to a bushing-terminal side internal conductor; a moving-electrode side terminal that is connectably/disconnectably connected to a bushing-terminal side internal conductor; and an insulating rod, the inside end of which is detachably coupled to the moving electrode and the outside end of which is coupled to an opening/closing actuation mechanism that opens/closes the contacts of the stationary contact and moving contact.

Abstract: A switching installation including a gas-filled enclosure, an input conductor, an actuator and a short-circuit device. The actuator is arranged to actuate the short-circuit device upon the occurrence of a first arc in the enclosure. The short-circuit device creates, upon being actuated, a short-circuit through the solid insulation between the input conductor and the enclosure or a separate ground point. The actuator can be arranged to react on an increase in pressure in the enclosure upon the occurrence of the first arc. The gas can be air or SF6. The short-circuit device can create, upon being actuated, the short-circuit through a section of a solid cable insulation isolating the input conductor from the enclosure.

Abstract: The switchgear includes a vacuum circuit breaker that is disposed in a circuit breaker chamber compartmented by a grounded metal plate, a busbar that is disposed in a busbar chamber and connected to the vacuum circuit breaker through a conductor, a cable that is disposed in a cable chamber and connected at one end to a load side, and a grounding device that is operated by a grounding device actuator disposed in a grounding device actuator chamber, connected to the vacuum circuit breaker through a conductor, and connected to the other end of the cable. The busbar is formed by a solid-insulated busbar. The conductor connecting the vacuum circuit breaker to the busbar and the conductor connecting the vacuum circuit breaker to the grounding device are both formed by solid-insulated conductor. The circuit breaker chamber and the grounding device have a sealed structure.

Abstract: A solid-dielectric switch including a visible disconnect assembly having an open state and a closed state, a molded housing at least partially encasing the visible disconnect assembly, a viewing window molded into the molded housing, wherein the visible disconnect is visible through the viewing window. The invention also provides a method of molding the housing of the solid-dielectric switch. The method includes providing a mold including an external shell and an internal mandrel. The external shell defines external dimensions of a housing of the switch, and the internal mandrel defines internal dimensions of the housing. The method also includes providing a lens for a viewing window, sealing the lens between the external shell and the inner mandrel, and filling the mold with epoxy to mold the viewing window into the housing of the switch.

Abstract: A cartridge having at least three shields including a mid-potential shield between two contacts and at least one partial shield between a mid-potential shield and one of the contacts, the distance between the mid-potential shield and the contacts being such that the electric field present at the edge of the contact extends from the contact to the partial shield surrounding it, or vice-versa from the partial shield to the contact, depending on the polarity of the voltage.

Abstract: A pole assembly for a three phase breaker includes a center pole and a pair of outer poles positioned on opposed sides of the center pole. A pair of brackets are positioned at opposed ends of the pole, and include a center groove and a pair of outer grooves. The center pole is positioned in the center groove. The outer poles are secured in the outer groove in a shipping configuration and an installed configuration. When in the shipping configuration the bushings of all the poles are parallel. When in the installed configuration the bushings of the outer poles are angled away from the bushings of the center pole.

Abstract: A vacuum switch tube has a housing which has two insulating housing regions arranged and configured symmetrically in respect of a center plane. Each of the two insulating housings contains a plurality of insulating housing parts. Shielding elements extend into the interior of the vacuum switch tube and are arranged between neighboring insulating housing parts and between insulating housing parts and neighboring additional housing parts. The shielding elements have improved dielectric properties and a simultaneously material-saving structure. Accordingly, the geometrical dimensions of the shielding elements are determined in dependence on a connected voltage and possible critical field strength between neighboring shields.

Abstract: Modular switchgear and methods for manufacturing the same. The modular switchgear includes a vacuum interrupter assembly, a source conductor assembly, and a housing assembly. The vacuum interrupter assembly includes a bushing, a fitting, and a vacuum interrupter at least partially molded within the bushing and including a movable contact and a stationary contact. The source conductor assembly includes a bushing, a fitting, and a source conductor molded within the bushing. The housing assembly includes a housing defining a chamber and a drive shaft and conductor positioned within the chamber. The housing assembly also includes a first receptacle for receiving the fitting of the vacuum interrupter assembly and a second receptacle for receiving the fitting of the source conductor assembly. The vacuum interrupter assembly, the source conductor assembly, and the housing assembly are coupled without molding the assemblies within a common housing.

Abstract: A vacuum interrupter includes a housing having two insulating material areas disposed and constructed symmetrically with respect to a center plane. Each of the two insulating material housing areas includes a plurality of insulating material housing parts. The interrupter has a compact construction and high dielectric strength. The insulating material housing part of each insulating material housing area located farthest away from the center plane has a length that is greater than the length of the other insulating material housing parts.

Abstract: A vacuum interrupter includes a vacuum vessel configured with an insulator, a fixed end plate and a movable end plate fixed to both ends of the insulator. A fixed contact and a movable contact face each other inside the vacuum vessel. A movable conductor has one end fixed to the movable contact and the other end is extracted outside the vacuum vessel. A bellows has an accordion portion expanding and contracting with linear movement of the movable conductor. A bellows support member having a cylindrical shape is fixed to the vacuum vessel so that the accordion portion of the bellows contacts the inside of the bellows support member.

Abstract: A vacuum interrupter comprises a tubular bellows (30) including a first hollow bore (32); at least one sub-assembly (34), each sub-assembly (34) including an end cap (42), the or each end cap (42) including at least one second hollow bore and having a composition including glass or including glass-ceramic; at least one primary annular metallic element (36) being operably connected between the or each end cap (42) and one of respective ends of the tubular bellows (30); a pair of electrically conductive contact elements (38); and a pair of electrically conductive rods (40), each rod (40) being operably connected to a respective contact element (38) at a first end and being connected in use to an electrical network at a second end, a portion of at least one rod (40) being retained inside the or each second hollow bore of a respective end cap (42), wherein the or each end cap (42) and each rod (40) are operably connected to one of the respective ends of the tubular bellows (30) to define a vacuum-tight enclosure;

Abstract: A vacuum interrupter includes a number of insulative tubes having a first open end and a second open end; a first end member secured to the first open end; a second end member secured to the second open end; a fixed contact mounted on a fixed electrode extending through the second end member; a retainer; and a movable contact. The retainer includes a rigid retainer having a plurality of legs and an opening, and an insulative bushing having a smaller opening. The insulative bushing is molded over a portion of the rigid retainer. The smaller opening is within the opening of the rigid retainer and is structured to receive a movable electrode. The movable contact is mounted on the movable electrode extending through the first end member and through the smaller opening. The movable contact is capable of axially reciprocating into and out of contact with the fixed contact.

Abstract: An improved bellows for use in a vacuum interrupter includes a plurality of corrugations extending along a central axis, with each convolution including a convolution element and a support element. Each convolution element has a convolution length along the central axis and a convolution height perpendicular to the central axis. In a first embodiment, the convolution height of the various corrugations increases between two ends of the bellows. In an embodiment, the bellows height increases gradually between the two ends, and in another embodiment the convolution height increases in a stepwise fashion. The convolution length can likewise change gradually or stepwise between the ends of the bellows. The convolution height alternatively can remain the same throughout a bellows, but the convolution length may change.

Abstract: A vacuum cartridge (1) is manufactured with a dielectric coating (22) made from elastomer directly on the enclosure of the chamber (2) of the cartridge (1). To prevent the elastomer from infiltrating into the chamber (2) of the cartridge and/or its enclosure from breaking, cover-plates (26) performing mechanical protection and dielectric deflection cover the covers (61, 62) of the chamber (2) and their braze (8) with the ceramic tube (4).

Abstract: A vacuum interrupter is provided. As a main shield and sub shields are installed in an overlapping manner, an equipotential distribution can be mitigated and thusly a dielectric strength can be enhanced. Also, as a curved portion is formed at each end of the shields, concentration of an electric field at an end of each shield can be prevented and accordingly an electric field value can be lowered. Consequently, the dielectric strength can be remarkably enhanced, resulting in an effective prevention of a dielectric breakdown.

Abstract: A housing for a vacuum interrupter module that resists fracture when fasteners received therethrough are tightened, comprises an elongated hollow body from which a mounting flange extends from at least one end. Extending between the mounting flange and the body and/or coextensive with the mounting flange is a curved transition that maintains at least one curved recess, which partially surrounds corresponding mounting bores that are configured to receive suitable fasteners to mount the housing. Once mounted, the curved transition prevents stress forces imparted by the fasteners from deflecting the mounting flange, thereby inhibiting the formation of fractures therein.

Abstract: A switching installation including a gas-filled enclosure, an input conductor, an actuator and a short-circuit device. The actuator is arranged to actuate the short-circuit device upon the occurrence of a first arc in the enclosure. The short-circuit device creates, upon being actuated, a short-circuit through the solid insulation between the input conductor and the enclosure or a separate ground point. The actuator can be arranged to react on an increase in pressure in the enclosure upon the occurrence of the first arc. The gas can be air or SF6. The short-circuit device can create, upon being actuated, the short-circuit through a section of a solid cable insulation isolating the input conductor from the enclosure.

Abstract: A pole part of a switchgear assembly having a vacuum interrupter chamber is provided. To ensure that heat is dissipated to the exterior for convection, a thermally conductive heat transmission element in the form of a cylindrical casing is provided between the vacuum interrupter chamber, a contact holder and an encapsulation casing. An inner surface of the heat transmission element rests on the vacuum interrupter chamber and the contact holder, and an outer surface of the heat transmission element rests on an inner surface of the encapsulation casing inner surface. The heat transmission element can be produced from a thermally conductive plastic using an injection-molding or molding-compound production process. The heat transmission element can be connected to the pole part through openings. The heat transmission element can be arranged before the encapsulation of with an encapsulation compound, and be cast in the encapsulation casing.

Abstract: A vacuum insulated switchgear comprising a vacuum container accommodating at least a pair of movable contacts and a pair of fixed contacts, wherein the movable contacts are capable of taking three positions, the switchgear being a double-break three-position type switch having breaking and disconnecting functions.

Abstract: Provided is a vacuum circuit breaker whose insulation cylinder contained in a gas-insulated-switchgear housing contains a vacuum valve and which can be downsized while the cylinder's required mechanical strength is retained, and a gas-insulated switchgear using the same is also provided.

Abstract: A current interrupting switch for power distribution systems comprising an outer case and a plurality of vacuum interrupter bottle switches positioned in the case.

Abstract: A vacuum insulating switch gear formed by integrally molding with epoxy resin of a vacuum double-break three-position type switch including a movable contact, a fixed contact, and a vacuum container composed of an insulating cylinder for covering the movable contact and the fixed contact, a lower lid for closing a lower part of the insulating cylinder, and an upper lid for closing an upper part of the insulating cylinder and an operation rod side of the movable contact, and an earthing switch with a vacuum closed container, comprising a first silicone rubber layer coated on an upper edge corner portion of each insulating cylinder composing the vacuum containers of the switch and the earthing switch, a self fusing insulating tape layer wound around an outer surface of the first silicone rubber layer, a second silicone rubber layer coated on the self fusing insulating tape layer and an outer periphery of the each insulating cylinder, a ring easing shield installed at a position corresponding to a lower end c

Abstract: An electronic vacuum switch is described comprising a connector (6) having means (7) for the seal-closing of an outer body (1) having a cavity (60) within which a negative pressure sensor (8) exposed to the negative pressure of the board (2) connected to the sensor (8) are housed. The negative pressure sensor is a ceramic pad integrated in a Wheatstone bridge (72) and the circuit board (2) is connected to said Wheatstone bridge (72) and comprises means (86) for the calibration of the Wheatstone bridge which are manually settable.

Abstract: Insulated vacuum switchgear and active switchgear elements therefor are provided with a composite overwrap for mechanically isolating a vacuum insulator from axial loads in use without reinforcing or insulating encapsulations. A dielectric buffer layer is provided to fill voids or discontinuities in the overwrap.

Abstract: The present disclosure provides a pole part of a low-voltage, medium-voltage and/or high-voltage switching device. The pole part includes a vacuum interrupter chamber having a fixed contact and a movable contact, which includes an electrical contact piece. The vacuum interrupt chamber is cast into an insulating material. The insulating material has opening at the bottom in at least one of a region of the movable contact and a drive rod driving that drives the movable contact. To reduce the heating of the pole part to enable production of a higher rated current carrying capacity, in the region of the movable contact and/or the articulation point of the drive rod, at least one ventilation opening is formed to pass through at least one of an exterior wall of the insulation, a boundary zone between the insulation and the electrical connection piece, and the electrical connection piece.

Abstract: A vacuum switch means a unit switch section comprising a pair of vacuum main circuit switches, an earth switch, operating rods for operating movable conductors of the main circuit vacuum switch and earth switch, and a molding case covering the main circuit switch, earth switch and the operating rods, wherein the operating rods are connectable with an operating mechanism, and the fixed conductors of the main circuit switch and earth switch are connected with bushing conductors. The main circuit vacuum switches are disposed in separate vacuum chambers. The movable conductors of the main circuit switches and electrically connected to each other via a transition conductor, and the movable conductors are operated synchronously by means of a transition rod connected to the transition conductor.

Abstract: The present invention is to provide a main circuit terminal assembly for a vacuum circuit breaker, which can prevent temperature increase by increasing a surface area of a main circuit conductive unit, the main circuit terminal assembly for a vacuum circuit breaker which is electrically connected to a vacuum interrupter, including: a clamp electrically connected to a movable unit of the vacuum interrupter, and configured as a pair of conductors so as to support the movable unit by clamping; a heat sink fixed to the clamp that increase a surface area of the clamp; a flexible shunt having one end thereof electrically and mechanically connected to the clamp, and configured as a flexible conductor to allow the movable unit to move; a terminal block electrically and mechanically connected to another end of the flexible shunt, and configured as an electrical conductor; and a contactor unit electrically connected to the terminal block and having a plurality of clip-shaped contactors.

Abstract: A switchgear including a vacuum valve which prevents partial discharges infallibly and whose reliability is high, and a method of fabricating the same are obtained. In a vacuum valve 1 wherein a stationary electrode 1a and a movable electrode 1b are disposed within a vacuum vessel 2 which is constituted by a metal flange 2a as well as a metal tube 2e and an insulating tube 2b, and wherein a resin mold 3 is applied onto the outer peripheral surface of the vacuum vessel 2; coiled metal-made shields 4a and 4b, in each of which a coiled metal wire is brought into an annular shape, are retained on the outer peripheral surface of the vacuum vessel so as to relax the electric fields of the electric field relaxation-requiring parts 21d of the vacuum vessel 2.

Abstract: This cartridge comprises at least three shields comprising one shield called mid-potential shield inserted between the two contacts and at least one shield called partial shield inserted between said mid-potential shield and one of the contacts, the distance between said mid-potential shield and the contacts being selected such that the electric field present at the edge of the contact goes from the contact to the partial shield surrounding it (or vice-versa from the partial shield to the contact depending on the polarity of the voltage).

Abstract: An electrical switch which includes an insulative housing having a wall defining an axial bore therein, a first electrical contact disposed in the housing bore and a second electrical contact movably disposed in the housing bore between an open position and a closed position. When the contacts are in their open position, the second electrical contact is spaced apart from the first electrical contact and when the contacts are in their closed position, the second electrical contact is in electrical contact with the first electrical contact. The switch includes features to enhance safety and operation by reducing the possibility of arcing or flashover before and during the switching operation and to provide of visual indication of the state of the switch.

Abstract: A vacuum insulated switchgear is provided with: an enclosure having a switch block defined by a grounded metal plate, a bus block positioned above the switch block, and a cable block positioned on the rear side of the bus block; a bus provided in the bus block and connected with a fixed contact of a vacuum double-break three-position switch; the vacuum double-break three-position switch provided in the switch block so that its movable contacts are positioned below its fixed contacts; an operating device provided in the switch block so as to be positioned below the vacuum double-break three-position switch; and a lever mechanism that couples together the movable contacts of the vacuum double-break three-position switch and the operating device.

Abstract: The high-voltage switching device used in one installation position and has metallic encapsulation (10) a switching gap (4) and a particle trap (1) for holding foreign body particles (2), and is characterized in that in the one installation position, the particle trap (1) is arranged vertically underneath the switching gap (4), in the one installation position, an isolator part (8) is provided, which has a surface (8a) aligned essentially horizontally and faces the interior of the high-voltage switching device, with a metallic wall (9), which is higher than the particle trap (1; 1?), being arranged between the isolator part (8) and the particle trap (1; 1?). The particle trap (1) has a viewing window (3). If the high-voltage switching device is a disconnector, this viewing window (3) may be identical to the viewing window (3) for visual access to the visible disconnecting gap (4) of the disconnector.