Abstract: A gas-insulated high-voltage switch for the interruption of large currents includes a housing, a contact arrangement which is arranged in the housing and has two switching pieces which can be moved relative to one another along an axis. Each switching piece has a rated current contact and an arcing contact. The switch includes a drive which acts on a first of the two switching pieces. The switch includes a device configured to detect and indicate the contact wear of the two arcing contacts caused by the action of the arc. The device has an indicator arranged outside the housing. In the switch, the remaining life which is determined by the contact wear of the arcing contacts is detected and indicated by a simple mechanical mechanism. The device has a transmission mechanism which is fed through the housing in a gas-tight manner and a drive member coupled to the operating element.

Abstract: Exemplary embodiments are directed to a circuit breaker arrangement for medium voltage to high voltage applications. The circuit breaker includes at least one pole part housing for accommodating a vacuum insert, within which a pair of corresponding electrical contacts is coaxially arranged. A fixed electrical contact is electrically connected to an upper terminal of the pole part housing and an axial movable electrical contact is electrically connected to a lower terminal of the pole part housing and is operated by an insulating pushrod. The insulating pushrod extends through a shielding plate arranged on a lower opening of the pole part housing. The shielding plate includes a rigid moulded plastic insulating material. At least one sealing ring has an elastic material moulded on the periphery of the shielding plate.

Abstract: A switchgear device having a single-pole breaking unit which includes one of a pair of stationary contacts connected to a line-side current conductor, a movable contact bridge for closing and opening the stationary contacts, a line-side panel, a load-side panel opposite the line-side panel and two opposing lateral-side panels, which panels surround the stationary contacts and contact bridge, and form arc extinguishing chambers with a stationary contact within each chamber, an opening volume between chambers, and a quenching gas exhaust channel connected to a chamber, and opening through the line-side panel, which is opposite another load-side panel for contact with a trip device.

Abstract: An electrical wiring device includes a metal switch cover as a user contact point. The metal switch cover has antimicrobial properties that reduces microorganisms that are present on the wiring device, and helps reduce the spread of infections or disease from user to user. The metal switch cover is disposed on a switch in the wiring device, such that users touch the metal switch cover when operating the switch. In some exemplary embodiments, the metal switch cover is coupled to a paddle-style switch and takes on the profile of a paddle. In some exemplary embodiments, the metal switch cover is coupled to a toggle-style switch and take on the profile of a toggle.

Abstract: An arc baffle includes a first baffle member having a number of first venting holes disposed therein, each being structured to receive ionized gases produced by an arcing event; a second baffle member having a number of second venting holes disposed therein; a section of porous material disposed between the first baffle member and the second baffle member; and a cover disposed adjacent the second baffle member on the opposite side of the section of porous material. The first venting holes are laterally spaced from the second venting holes by a predetermined distance such that ionized gases produced by the arcing event passing through one of the first venting holes must travel at minimum the predetermined distance generally along the section of porous material before passing through one of the second venting holes.

Abstract: A double break disconnect switch including a bearing arrangement carrying a switch blade assembly is mounted on a drive arrangement. The switch blade assembly is rotatable longitudinally during initial opening and final closing of the switch and transversely for final opening and initial closing. The switch blade assembly is hinged for rotation about a hinge axis offset from the center of gravity of the switch blade for initial opening and for final closing. A blade bearing is provided of very small in diameter. The drive assembly uses the weight of the blade to keep the blade from rotating longitudinally and uses a cam arrangement including a roller riding in a slot of a blade drive plate that is spring loaded on one end and pivotally attached at the other end to rotate the blade longitudinally providing greater force to rotate the blade as contacts engage.

Abstract: A three-phase vacuum interrupter switch assembly for power distribution systems comprises an outer case having at least one window and containing a plurality of component assemblies. The case interior is preferably free of oil and/or SF6 gas. Each component assembly comprises three internal disconnect switch assemblies, three vacuum interrupter bottle switch assemblies and three ground switch assemblies. Each vacuum interrupter bottle switch is coupled in electrical series with a corresponding internal disconnect switch assembly. Because the open/closed state of a bottle switch is not directly observable owing to its sealed interior, a direct visible indication of the state of the three-phase vacuum interrupter switch assembly is provided by a visually detectable contact rod of the corresponding internal disconnect switch that is visible through the case window.

Abstract: A dead tank vacuum circuit breaker of the invention has an object to obtain a dead tank vacuum circuit breaker in which an immovable end of a vacuum valve is supported on a tank immovable side via an insulating support member and a support frame or the immovable end of the vacuum valve is supported on a tank movable side via an insulating support rod, so that an insulating support member supporting a movable end of the vacuum valve is omitted, while an opening portion is provided to the movable side of the tank and a bushing center conductor has a slidable connection portion that is axially expandable and contractible, so that a de-assembly range can be minimized when the vacuum valve is replaced.

Abstract: There is provided a push switch including an insulating case, a conductive member, a movable electrode and an operating member. The insulating case has a wall portion defining a recess. The conductive member has a first portion embedded into the wall portion and a second portion disposed in the recess as a fixed electrode. The movable electrode is disposed in the recess and is displaced between a first position and a second position. The operating member is moved to displace the movable electrode from the second position to the first position. An anchor member protrudes from the conductive member in a direction not parallel to the direction in which the operating member is moved, and embedded into the wall portion.

Abstract: A waterproof type switch includes: a waterproof sheet including a flat portion and a side wall portion disposed around the flat portion, an upper portion of the side wall portion coupled to an edge portion of the flat portion; a switch disposed below the flat portion; and an electronic component coupled to an upper surface of the flat portion, the electric component being used as a key top, wherein the waterproof sheet includes a rubber and a reinforcing plate including a first reinforcing plate disposed on the upper surface of the flat portion and coupled to the electric component.

Abstract: A shutter system for a switchgear compartment includes a moveable shutter translatable between a closed position and an open position. Also included is a pusher operatively coupled to a first side of the moveable shutter and configured to impart a force on the moveable shutter in response to an insertion of an electrical device within the switchgear compartment. Further included is a cam member having a cam shaft operatively coupled to the moveable shutter, the cam shaft having a cam track. Yet further included is a bell crank configured to guide along the cam track and translate the moveable shutter between the closed position and the open position.

Abstract: A touch panel includes a transparent plate, an upper substrate having an upper surface situated on a lower surface of the transparent plate and stacked on the transparent plate in a downward direction, an upper conductive layer provided between the lower surface of the transparent plate and the lower surface of the upper substrate, a lower substrate having an upper surface situated on the lower surface of the upper substrate and stacked on the upper substrate in the downward direction, and a lower conductive layer provided between the lower surface of the upper substrate and the upper surface of the lower substrate and facing the upper conductive layer across the upper substrate. The upper surface of the transparent plate has a dome shape projecting upward on a cross section in a first direction perpendicular to the downward direction and on a cross section in a second direction perpendicular to the downward direction and the first direction.

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: A switch mechanism includes a sliding track disposed inside a host module, and a sliding component. An end of the sliding component is pivotally connected to a display module and the other end of the sliding component is slidably installed inside the sliding track. The sliding component slides in a first direction relative to the sliding track while the display module pivots in a first rotary direction relative to the host module. The switch mechanism further includes an activation component for moving to a first position corresponding to a first switch component to activate a first switch component while the sliding component slides in the first direction.

Abstract: A muffler for enhanced arc protection is described. In the case of an internal arc event in an electrical enclosure, the muffler exhausts arc gas and plasma parallel to the enclosure surface, instead of directly forward where persons may be located. The muffler includes perforated plates and baffle plates in its interior space. The perforated plates have offset perforation patterns from one another, and the baffle plates are provided on opposing walls, causing the plasma and gas to make multiple directional changes. The perforated plates also filter the arc gas and plasma. These directional changes and filtering result in an energy reduction from the exhaust, which provides an increased margin of safety. In addition, the muffler provides an adequate level of ventilation in the enclosure, thus keeping the components cool.

Abstract: A thin key structure includes a supporting module, a circuit module disposed on the supporting module, a frame and a metal dome disposed on the circuit module, a pressable module, and a guiding portion. The supporting module has a supporting plate and a protrusion disposed on the supporting plate. The supporting plate has a plane defined therein, the plane defines a perpendicular central axis, and the protrusion is arranged on the central axis. The circuit module has a protruding segment formed by the protrusion. The metal dome is arranged in the frame, and has a contact portion arranged on the central axis. The guiding portion arranged on the central axis and is disposed between the contact portion and the pressable module. The metal dome is pressed by the guiding portion to move the contact portion along the central axis and selectively abuts the circuit module.

Abstract: The present invention relates to a moving element for a low voltage switching device and to a switching device comprising this moving element. The moving element according to the invention comprises for each pole a housing unit suitable to receive an elastic element which interacts with an electrical contact. This latter comprises a first contact portion susceptible to contact a further electrical contact and a second portion connectable to a conductive element of the switching device. The electrical contact comprises a pin shaped portion positioned rotating in a seat defined on the housing unit so as to configure a mutual rotation axis of the electrical contact with respect to the housing unit.

Abstract: Drive structure is provided for connection between an actuating assembly of a circuit breaker and linkage structure for opening and closing a movable electrical contact disposed in a volume of insulating material in a pole assembly. The drive structure includes a drive lever constructed and arranged to connect with the at least one actuating assembly. A drive shaft has first and second ends, with the first end being removably coupled to the drive lever so that rotation of the drive shaft rotates the drive lever. Seal structure is disposed between the drive lever and the actuating assembly such that the drive shaft can be removed from the drive lever without disrupting the volume of insulating material.

Abstract: A power breaker includes a fine motion mechanism portion having a chattering suppression portion formed of ring members and a ring member provided with sloping surfaces or curved surfaces at positions corresponding to one another in a state stacked up in a center axis direction, so that an impact generated upon collision of a movable electrode with a fixed electrode when a circuit is closed is trapped as a compression force. Hence, kinetic energy generated upon collision is consumed by energy absorption by friction due to a spring property of the ring members and a frictional force on the contact surfaces. It thus becomes possible to reduce a generation time of a chattering action.

Abstract: A closing system for an arc extinguishing chamber of a circuit breaker with high breaking capacity has been developed. The system according to the invention comprises a first duct equipped with a set of filters able to support usual pressures caused by the gases arising from the switching arc, in particular about 10 to 12 bars, and a second duct closed by a valve device enabling direct outlet of the exhaust gases when the pressure exceeds a threshold so as to prevent any explosion of the case. The outer wall of the extinguishing chamber is designed for the circuit breaker housing so as, including in case of opening of the valve device, to direct the gases and to prevent any arc-over on the frame. The valve device comprises a suitable membrane made from polymer, in particular aramide.