Abstract: An arc extinguishing contact assembly for a circuit breaker assembly is provided. The arc extinguishing contact assembly includes a fixed contact assembly, a movable contact assembly and an arc extinguishing assembly. The fixed contact assembly includes a fixed arc contact assembly, a fixed main contact assembly, and a number of movable, intermediate arc contact assemblies. The movable contact assembly includes a movable arc contact assembly and a movable main contact assembly. The arc extinguishing assembly is structured to extinguish an arc generated as the movable contact assembly moves between an open, first position and a closed, second position.

Abstract: A connector unit for connecting at least two cables includes at least a male part, a female part, and a shuttle piston. The shuttle piston includes an opening configured for receiving at least a section of the male part, at least one latching device, and at least one latching structure. The male part includes the section configured for insertion into the opening of the shuttle pin, at least one latching aid, and an interaction area configured for a force-fitting interaction with at least one backing latch of the female part. The female part includes the at least one backing latch.

Abstract: A pair of arcing contacts 3 and 5 facing each other are placed in a tank 1 to perform opening and closing operation, and a puffer cylinder 7 is coaxially provided on the circumference of one arcing contact 5. A puffer chamber 9 is comprised of the puffer cylinder 7, a fixed piston 6, and a hollow rod 8. An insulating nozzle 4 forming a space communicating with the puffer chamber 9 is provided. An exhaust tube 2 for exhausting and cooling hot gas discharged from an arc produced in the insulating nozzle 4 is provided on the circumference of the other arcing contact 3. A structure 11 for temporarily reducing the flow path area is provided on the inner circumferential surface at short of the end portion of the exhaust tube 2.

Abstract: A locking device for locking electrical plugs in sockets has a rotational track element which can be driven by a motor and on which a guide track is provided around the axis of rotation thereof, said guide track being provided with a plurality of track sections that have different pitches. A sliding element has a track engagement part that engages in the guide track and that can be displaced parallel to the axis of rotation of the rotational track element by rotation of the rotational track element.

Abstract: An electrode extension assembly is for a vacuum switching apparatus, such as a vacuum interrupter, including a vacuum envelope and separable contact assemblies. Each contact assembly includes a contact disposed in the interior of the vacuum envelope, and an electrode stem extending outwardly from the contact to the exterior of the vacuum envelope. The electrode extension assembly includes a number of extension members each being be joined to the electrode stem of a corresponding one of the contact assemblies on the exterior of the vacuum envelope by a welded joint formed by electron beam welding or plasma welding.

Abstract: An arc chute assembly for use in an automatic transfer switch includes a housing including a pair of opposing sidewalls and a primary deionization plate coupled between the pair of opposing sidewalls. The primary deionization plate includes a tongue portion oriented substantially midway between the opposing sidewalls and extending toward a contact assembly. The tongue portion is configured to facilitate suppressing an electric arc originating from the contact assembly.

Abstract: The gas circuit breaker includes a main shaft which is a rotating shaft of a main lever connected to an opening spring, a cam shaft which is a rotating shaft of a cam connected to a closing spring, a main shaft holding member which holds the main shaft, a cam shaft holding member which holds the cam shaft, and a bracket which holds the main shaft holding member and the cam shaft holding member. A through hole is provided in a portion of the bracket between the main shaft holding member and the cam shaft holding member, and a heat generating member is provided at least on a portion of the through hole.

Abstract: A device for medium or high voltage switching element gear, the device having: a switching element for connecting two conductors: and a driving rod for operating the switch, wherein the driving rod comprises at least a surface layer of an electrically high resistance material. The electrically high resistance material ensures that a small current will flow through the material due to the present electrical field. This small current will cause a heating of the driving rod, such that condensation is reduced or prevented.

Abstract: A power distribution assembly including a seating tray and a device coupled to the seating tray and at least partially fixed relative to the seating tray. The device defines a first channel and a second channel. The device has a mechanical advantage system in communication with the first and second channels. The power distribution assembly includes a housing selectively coupled to the seating tray and an extension affixed to the housing and movably disposed in the second channel of the device. The extension engages the mechanical advantage system. A power distribution assembly includes an actuator movably disposed in the first channel of the device. The actuator engages the mechanical advantage system. The actuator is movable in a first direction to actuate the mechanical advantage system and translate movement of the actuator to movement of the extension with the housing moving toward the seating tray during the movement of the extension.

Abstract: A circuit breaker including an ejection device including an arc-extinction medium for improved extinction of an arc formed during a breaker operation and an exhaust-cooling medium for improved cooling of exhaust gases in the circuit breaker. Thereby, the arc-extinction liquid includes an organofluorine compound having a boiling point Tb at 1 bar higher than ?60° C. and being selected from the group of: a fluoroether; a fluoroamine; a fluoroketone; and mixtures thereof.

Abstract: An arc extinguishing contact assembly for a circuit breaker assembly is provided. The arc extinguishing contact assembly includes a fixed contact assembly, a movable contact assembly and an arc extinguishing assembly. The fixed contact assembly includes a fixed arc contact assembly, a fixed main contact assembly, and a number of movable, intermediate arc contact assemblies. The movable contact assembly includes a movable arc contact assembly and a movable main contact assembly. The arc extinguishing assembly is structured to extinguish an arc generated as the movable contact assembly moves between an open, first position and a closed, second position.

Abstract: A circuit breaker includes: a first arc-extinguishing chamber and a second arc-extinguishing chamber that interrupt a current by opening contact points and extinguish an arc during the current is being interrupted; and a connection unit that connects the first arc-extinguishing chamber and the second arc-extinguishing chamber to each other. The first arc-extinguishing chamber and the second arc-extinguishing chamber are connected to the connection unit in such a manner that shaft lines of the arc-extinguishing chambers form an angle of substantially 90 degrees. The first arc-extinguishing chamber is arranged on a side of the connection unit in such a manner that the shaft line thereof is substantially horizontal, and the second arc-extinguishing chamber is arranged on an upper side of the connection unit in such a manner that the shaft line thereof is substantially vertical.

Abstract: A connector is provided which includes a housing in which a terminal is accommodated, and a retainer which is mounted on the housing to prevent movement of the terminal in the direction of detachment. A retainer insertion hole is provided on the housing to insert the retainer, and a provisional locking projection and a final locking projection are provided which extend into the retainer insertion hole. A guide portion is provided in the retainer which is flexibly deformed by interference from the provisional locking projection and the final locking projection, and a locked portion is formed, which is a locking hole opened in the guide portion. The locked portion and the provisional locking projection are temporarily locked during the insertion process, and the locked portion and the final locking projection are locked at the end of the insertion process.

Abstract: A switch includes: a hermetic vessel filled with an insulating medium; an insulating spacer dividing the hermetic vessel into a first heretic space and second heretic space; an electrode fixedly penetrating through the insulating spacer; and a first circuit breaker part inserted between a first conductor and the electrode in the first hermetic space and serially connecting a second conductor in the second heretic space in a closed state, and having a first contact including the electrode and a first driver driving the first contact. The first circuit breaker part is a vacuum circuit breaker having the first contact housed in a vacuum vessel and a second circuit breaker part having the second contact larger in dielectric strength than in the vacuum circuit breaker. In an interrupting operation from the closed state, the first contact and the second contact are opened, and the first contact is closed when or after the second contact is opened.

Abstract: The invention relates to the use of a mixture of a hydrofluoroolefin and a hydrofluorocarbon, optionally combined with another fluorinated gas, as an electrical insulation medium and/or an electric arc extinguishing medium in a medium-voltage electrical apparatus. The invention also relates to a medium- or high-voltage electrical apparatus in which such a mixture provides electrical insulation and/or electric arc extinguishing.

Abstract: The invention relates to a high-safety surge protective device which comprises a casing, at least one overvoltage protection component inside the casing, a release unit used to separate the overvoltage protection component from the AC or DC circuit or the equipment, an arc suppressing apparatus used to suppress electric arc generated while separating the overvoltage protection component from the AC or DC circuit or the equipment, and a box, Wherein: the release unit comprises a compression spring, a metal dome, a slide and a soft conductor; the arc suppressing apparatus comprises an arc chute assembly, a first arc striking sheet, a second arc striking sheet, a turning block and a torsional spring.

Abstract: A connector mounted to a circuit board to be inserted into a storage destination, and configured to include: a connector body including a housing part for housing an electric terminal connected to a predetermined wire of the circuit board, and a base part connected to the housing part; a panel including an opening which is formed in a pair of opposed surfaces and through which the housing part can be inserted; an ejector for detaching the circuit board from an insertion destination by turning; and a connection member connected to a turning shaft part for turning the ejector to fasten the circuit board and the base part of the connector body. The connector can be mounted, together with the ejector, to a compact circuit board corresponding to a compact unit wire rack and can be efficiently mounted in a saved space.

Abstract: A circuit breaker includes a shielding component having an external portion which defines a space external to the circuit breaker housing and covers a vent in the circuit breaker housing to direct gasses and debris from the vent to an outlet. The external portion also prevents insertion of the circuit breaker into a breaker box closer than the distances defining the space. This can have the advantage of preventing arcing from the breaker contacts to the breaker box. The external portion may also prevent insertion of the circuit breaker into a breaker box such that a vent in the circuit breaker housing is blocked. In some implementations, the shielding component contains an internal portion which extends into the circuit breaker housing and is disposed to impede debris generated by contact arcing, or other debris, from entering the mechanism of the circuit breaker.

Abstract: A cable connector comprising a connector body, a compression member operably connected to a second end of the connector body, the compression member including a compression portion having a forward facing surface, wherein the compression portion protrudes from an inner surface of the compression member, wherein, when the compression member is slidably axially compressed within the connector body, the compression portion of the compression member compresses an inner sleeve into crimping engagement with a coaxial cable is provided. An associated method is also provided.

Abstract: Power cables that include plug housings having an improved appearance as well as employ a halogen-free cable while providing adequate fire resistance. One example provides a power cable having cable plug with a substantially unitary body. Another example provides a power cable that is formed using halogen-free materials. To provide adequate fire protection, a strain relief formed using multiple materials is used.