Abstract: An extinguishing chamber of magnetic blow-out type for a breaking device includes a field source, a magnetic carcass and a breaking region, in which an electric arc is liable to form when a breaking pole belonging to the breaking device is opened. The field source is arranged to generate a magnetic field intended to move the electric arc in order to stretch it and accelerate its cooling and its extinguishing. The carcass is arranged to channel the magnetic field. The carcass is stood up against the field source and closes in front thereof so as to create an air gap in the magnetic circuit formed by the field source and the carcass and to thus maximize the magnetic field that passes through the breaking region.

Abstract: An electrical contactor system includes a stationary contactor having a stationary contact, a moving contactor having a moving contact, a rotating member, a magnetic blow-out arc quenching device including a permanent magnet, and an isolation arc quenching device. The moving contactor is mounted on the rotating member and is rotatable between a connected position and a disconnected position. The moving contact is in electrical contact with the stationary contact when the moving contactor is rotated to the connected position, the moving contact is separated from the stationary contact when the moving contactor is rotated to the disconnected position. The permanent magnet is statically disposed in a vicinity of the stationary contactor for elongating an arc between the stationary contact and the moving contact by an electromagnetic force so as to extinguish the arc. The isolation arc quenching device pushes the arc toward the permanent magnet so as to force the arc to move to a vicinity of the permanent magnet.

Abstract: A system is provided for manufacturing a component within a factory. The system may have an autonomous vehicle configured to transport the component to an area within an open space of the factory and to secure the component at the area during processing of a designated volume of the component. The system may also have a plurality of processing modules each configured to process a portion of the component less than a whole of the designated volume, and a controller in communication with the autonomous vehicle and the plurality of processing modules. The controller may be configured to coordinate operations of the plurality of processing modules according to a programmed process plan.

Abstract: The present invention relates to an air circuit breaker, in which a recess is formed on one side or each of both sides of each contact plate provided in an insulating cage so as to reduce a contact area between a movable contactor and the contact plate when the movable contactor and the contact plate are brought into contact with each other, thereby preventing a contact portion between the movable contactor and the contact plate from being melted due to heat generation.

Abstract: An apparatus for checking damage to a surge protector and automatically changing a surge protector includes a casing, a current inflow unit supplied with an external current, a current discharge unit configured to supply an inflow current to an external electronic device, surge protectors placed between the current inflow unit and the current discharge unit in parallel, selectively connected to the current inflow unit, and supplied with an electric current, a relay placed between the current inflow unit and the surge protectors and configured to selectively connect the surge protectors to the current inflow unit, and a surge protector damage check unit configured to check whether a surge protector connected to the current inflow unit has been damaged by applying a voltage between the current inflow unit and the current discharge unit.

Abstract: A switch device may have a restriction member provided between a support portion and a fixed contact point portion of a polar board for restricting movement of a movable piece to the polar board. The restriction member may have a set height from the polar board such that the restriction member abuts on the movable where the fixed contact point reaches a predetermined height from the polar board due to wear. The movable piece may be supported by the support portion to be displaceable in the longitudinal direction such that when one side of the movable piece makes contact with the first fixed contact point, in a case where the restriction member makes contact with the movable piece, the movable piece may be displaced in the longitudinal direction on a basis of the contact position with the restriction member to be disconnected from the first fixed contact point.

Abstract: An electric switch includes a movable contact, a stationary contact to be contacted by the movable contact, one or more quenching plates, and a permanent magnet for directing an arc, which is formed when the contacts are separated from each other, to the quenching plate. The quenching plate has a base portion and side portions extending away from the base portion. The permanent magnet is arranged such that the arc is directed towards one of the side portions of the quenching plate.

Abstract: An arc extinguishing apparatus for a ring main unit includes: a housing; a plurality of fixed contactor assemblies fixed to be protruded toward the center in the housing and formed by inserting a permanent magnet for arc extinguishing by a magnetic force between a pair of main circuit fixed contacts; a plurality of earthing fixed contactors fixed to be protruded toward the center in the housing and installed to be spaced apart from the fixed contactor assemblies at a predetermined angle; a 3-phases common rotational shaft installed to be rotatable at the center of the housing; and a rotatable movable contactor assembly having a plurality of puffer guide plate sections having openings with a narrow opening width to accelerate the velocity of flow of insulating gas to extinguish arc by blowing it, and rotatable to a circuit closing position, an earthing position, and a circuit opening position.

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: A multi-instruction switch for enhancing electrical insulation is provided. The multi-instruction switch includes a housing, a common pin and a switching pin set. The housing comprises an accommodating space which includes a conductive elastic plate moving back-and-forth and a support rack therein. The conductive elastic plate includes a normal connection section and a switching connection section. The support rack includes a limiting track. The common pin is normally in electrical contact with the normal connection section in the housing. The switching pin set includes a first pin having a contact section and a second pin having a trigger section. The limiting track includes a first insulation plate, a second insulation plate, and an insulation space between the first and second insulation plates. As such, the present invention enhances the insulation effect by the first and second insulation plates and the insulation space located at the limiting track.

Abstract: The present disclosure relates to a vacuum interrupter capable of easily installing a central arc shielding plate in alignment without biasing in a radial direction. The vacuum interrupter includes a protruding guide unit protruding from a stationary electrode seal cup in a perpendicular direction to guide the installation of the central arc shielding plate such that the central arc shielding plate can be aligned in a radial direction.

Abstract: Circuit breakers having an electrical contact assembly with a moving electrical contact that is linearly translatable within an inner cavity are disclosed. A guide linearly carries a moveable contact assembly having the moving electrical contact and the guide has one or more guide supports accessible by a drive member external to the cavity. According to another aspect, a circuit breaker electrical contact assembly and method of operating a circuit breaker is provided, as are other aspects.

Abstract: A breaking device with an arc breaking shield comprising at least one stationary contact collaborating with a movable contact supported by a contact-holder arm and an actuating device of the movable contact in a casing. A movable arc breaking shield is commanded in movement to occupy a rest position and a laminating position. The movable breaking shield is connected to the contact-holder arm by an actuating rod in such a way that movement of the contact-holder arm results in movement of the movable breaking shield, the actuating rod being respectively connected to the movable breaking shield and to the contact-holder arm by a second and third pivot-pin.

Abstract: An arc containment device is presented. The arc containment device includes a shock shield further having a multiple apertures for escape of gas, the shock shield configured to surround an arc source. The device further comprises an inner enclosure having a multiple openings generally aligned with the multiple apertures, the inner enclosure configured to provide an electrical insulation base for the arc source. An outer enclosure disposed is provided around the inner enclosure, the outer enclosure configured to direct the gas to the environment outside the device.

Abstract: A vacuum switch includes a vacuum envelope; a fixed contact assembly partially within the vacuum envelope; and a movable contact assembly partially within the vacuum envelope and movable between a closed position in electrical contact with the fixed contact assembly and an open position spaced apart from the fixed contact assembly. The vacuum envelope includes an insulating body having a number of transparent portions made of a single crystal alumina for viewing the fixed contact assembly and the movable contact assembly within the vacuum envelope.

Abstract: An improved circuit breaker having an improved shield apparatus provides protection to components that are internal to the circuit breaker during an arc event. A contact arm carrier assembly of the circuit breaker comprises a number of springs that bias a number of movable contacts that are disposed on contact arms into engagement and electrical connection with a stationary contact. The shield apparatus is disposed on a carrier housing of the contact arm carrier assembly and is situated adjacent the springs. A shield member of the shield apparatus is biased into engagement with the contact arms. When the circuit breaker is moved between the ON position and the OFF or TRIPPED positions, the shield of the shield apparatus moves between a retracted position and a deployed position, with the shield remaining in engagement with the contact arms and protecting the springs from damage in an arc event. In one embodiment, the shield member is formed of a material that generates gases when struck by an arc.

Abstract: A gas-insulated switchgear includes a fixed-side electrode having a tubular fixed-side-conducting contact and a fixed-side shield for housing the fixed-side-conducting contact, and a movable-side electrode having a movable conductor driven by a driving unit to be connected to and separated from the fixed-side-conducting contact, facing each other in a container filled with an insulating gas. The switchgear includes a fixed-side-arc shield in the form of a circular plate, which is made of an arc-resistant member and has an opening of a diameter larger than the outer diameter of the movable conductor, the opening being formed on the side of the fixed-side shield facing the movable-side electrode. The fixed-side-arc shield is formed into a thin plate so as to cause an arc current to flow outward in a radial direction during contact parting of the fixed-side-conducting contact and the movable conductor to generate magnetic flux on a surface thereof in a circumferential direction.

Abstract: A circuit breaker includes a pivoting arc barrier that is interposed between the moving contact arm axis of motion and the moving contact, so that arc gasses are deflected away from the contact arm structure. The pivoting arc barrier pivots in a complimentary motion path with that of the moving contact arm so that an arc shield face is interposed between the contact separation arc generated around the moving contact and the remaining arm structure to which the moving contact is affixed throughout the range of contact arm operational motion. The pivoting arc barrier moves independently of the moving contact arm and advantageously does not increase the contact arm mass or bulk swept volume through its range of motion.

Abstract: An improved circuit breaker having an improved shield apparatus provides protection to components that are internal to the circuit breaker during an arc event. A contact arm carrier assembly of the circuit breaker comprises a number of springs that bias a number of movable contacts that are disposed on contact arms into engagement and electrical connection with a stationary contact. The shield apparatus is disposed on a carrier housing of the contact arm carrier assembly and is situated adjacent the springs. A shield member of the shield apparatus is biased into engagement with the contact arms. When the circuit breaker is moved between the ON position and the OFF or TRIPPED positions, the shield of the shield apparatus moves between a retracted position and a deployed position, with the shield remaining in engagement with the contact arms and protecting the springs from damage in an arc event. In one embodiment, the shield member is formed of a material that generates gases when struck by an arc.

Abstract: A gassing insulator assembly for a line conductor assembly of an electrical switching apparatus is provided having a line conductor and first and second gassing insulator members. The insulator members are constructed from a gassing material. The first gassing insulator member is disposed near a first end of the line conductor and the second gassing insulator member is generally disposed between the line conductor and a cantilevered arc runner near a second end of the line conductor.

Abstract: A circuit breaker includes a housing, separable contacts, an operating mechanism structured to open and close the separable contacts, a power conductor including a first conductor and a second reverse loop conductor, the second reverse loop conductor carrying one of the separable contacts, and a slot motor. The slot motor includes a first slot motor portion, and a second slot motor portion including a plurality of generally U-shaped slot motor laminations, a first insulative housing portion, and a second insulative housing portion. The first and second insulative housing portions interlock with one another to form a generally U-shaped insulative slot motor housing. The first and second insulative housing portions cooperatively receive the generally U-shaped slot motor laminations.

Abstract: A gassing insulator assembly for a line conductor assembly of an electrical switching apparatus is provided having a line conductor and first and second gassing insulator members. The insulator members are constructed from a gassing material. The first gassing insulator member is disposed near a first end of the line conductor and the second gassing insulator member is generally disposed between the line conductor and a cantilevered arc runner near a second end of the line conductor.

Abstract: The present invention relates to an arc-quenching device for circuit breakers having double-break contacts for use in low-voltage distribution systems. Provided around a prechamber (41) is a magnetic shield (91) for the purpose of intensifying the magnetic blowing action on an arc formed between the arc guide rails (51, 61) of the prechamber. In addition, a blowing loop (81) is inserted in the arc-quenching circuit and extends in sections parallel to an arc guide rail (61). Prechamber insulation having a bulge constricting the arc area likewise serves the purpose of optimizing the arc run.

Abstract: A moving contact assembly for a high-current interruption electric power switching apparatus has an inner carrier for the contact fingers that is rigidly held in a withstand position in an outer carrier by a spring biased cam follower pin engaging a cam profile on the inner carrier and configured to positively seat an inner carrier stop against an outer carrier stop on the outer carrier and to rapidly drive the inner carrier to a blow open position in response to a fault. The cam profile has an extended width divided between spaced apart cam profile sections to absorb the high closing and withstand forces. An abutment on the outer carrier resists bowing of the cam follower pin between the cam profile sections. Complementary convex and concave partial cylindrical surfaces on the inner carrier and a gas shield on the moving assembly carrier body maintain an arc gas seal during blow open.

Abstract: A high voltage switch contact structure capable of interrupting high voltage, high current AC and DC circuits. The contact structure confines the arc created when contacts open to the thin area between two insulating surfaces in intimate contact. This forces the arc into the shape of a thin sheet which loses heat energy far more rapidly than an arc column having a circular cross-section. These high heat losses require a dramatic increase in the voltage required to maintain the arc, thus extinguishing it when the required voltage exceeds the available voltage. The arc extinguishing process with this invention is not dependent on the occurrence of a current zero crossing and, consequently, is capable of rapidly interrupting both AC and DC circuits. The contact structure achieves its high performance without the use of sulfur hexafluoride.

Abstract: An electrical switch for electrical tools having an electric motor operated by a DC voltage. The switch comprises a contact system including a stationary contact and a switching contact, an operating element which acts on the switching contact to initiate a process for switching the contact system between an on-position and an off-position and a shield that quenches an arc that occurs between the stationary contact and the switching contact during the switching process. A movable slide is operatively connected to the operating element and has the switching contact arranged thereon. During the process of switching the switching contact from the on-position to the off-position, the shield is moved to an area located between the stationary contact and the switching contact. During the process of switching the switching contact from the off-position to the on-position, the shield is moved from the area located between the stationary contact and the switching contact.

Abstract: On a setting cart which is movable back and forth between a setting station and a vehicle body assembly station, there are provided floor panel setting members, side sill receiving members and side panel forcing members which force side panels toward a floor panel from a lateral outward. In the setting station, the floor panel and the side panels which are set in position on the setting cart are transferred to a jig which is disposed in a side portion of the vehicle body assembly station. The side panels are welded to the floor panel by welding robots which are disposed at a level below the jig. In the above-described arrangement, the side sill receiving members and the side panel forcing members are set on the setting cart so as to be retractable into shunted positions free from interference with the welding robots in welding operation. The welding work by the welding robots can thus be started without waiting for the returning of the setting cart to the setting station.

Abstract: An electric switch (1), in particular for electric hand tools having an electric motor operated by means of direct current. The switch (1) possesses a contact system (9) consisting of a fixed contact (10) and of a switching contact (11), an actuating member (3) for triggering a switching operation between an "off" and an "on" position of the contact system (9) acting on the switching contact (11). The contact system (9) is assigned means (18), consisting of a shield (19), for extinguishing an arc generated between the fixed contact (10) and the switching contact (11) during the switching operation. The shield (19) can be moved together with the switching contact (11) in a coupled manner, during the operation to switch the switching contact (11) from the "on" to the "off" position the shield (19) being moved into the region located between the fixed and switching contacts (10, 11).

Abstract: An arc isolation shield for molded case circuit breakers is inserted between the circuit breaker case and cover and attached to one leg of the operating cradle. The knee of the circuit breaker moveable contact arm contacts the bottom of the shield and moves the shield in unison with the contact arm to protect the contact arm, contact braid and operating spring upon contact separation under severe overcurrent conditions.

Abstract: A distribution circuit breaker for two circuits operated by a common handle, in which an arc gas generated in one circuit is prevented from flowing into the other circuit includes a breaking mechanism chamber (A) for a first circuit and another breaking mechanism chamber (B) for a second circuit are defined in a single circuit breaker case on each side of a partition (3a). Contact driving means (8) is forked at the lower end portion to have two fingers which are positioned on each side of the partition and to be spaced from each other, and movable contacts (10a,10b) are attached to the lower end portions of the fingers, respectively. An arc gas suppressing barrier is provided with respect to at least one movable contact.

Abstract: An arrangement in an electrical switching device for protection against electrical arcs comprises a tripping mechanism, a stationary contact carrier, a movable contact carrier, an exhaust vent, an arc runner, and an arc extinguishing barrier. The stationary contact carrier has a stationary contact mounted thereon, and the movable contact carrier has a movable contact mounted thereon. In response to an overcurrent condition, the tripping mechanism causes the movable contact carrier to rotate from a closed position to an open position, thereby generating an electrical arc. In the closed position the movable contact abuts the stationary contact, and in the open position the movable contact is separated from the stationary contact. The arc extinguishing barrier is composed of an outgassing material and is located between the stationary contact and a portion of the tripping mechanism.

Abstract: In an electrical switching device including a stationary contact carrier having a stationary contact mounted thereon, a contact carrier assembly comprises a movable contact carrier and an arc-resistant protective shield. The movable contact carrier has a movable contact mounted thereon. The movable contact carrier is movable between a closed position and an open position. The movable contact abuts the stationary contact while the movable contact carrier is in the closed position, and the movable contact is separated from the stationary contact while the movable contact carrier is in the open position. The arc-resistant protective shield is mounted to the movable contact carrier and surrounds the movable contact. The shield protects the movable contact carrier from electrical arcs generated during circuit interruption.

Abstract: An electrical switch device with separable contacts is provided with a shunt conductor adapted to receive one end of the arc that is struck when the contacts separate after it has jumped a dielectric gap. The shunt conductor determines an interim arc current path in which is a current limiter device.

Abstract: The low-voltage switch includes a stationary contact (2) and a moving contact (3). The two contacts and an arc splitter stack (6) are arranged in an arc quenching chamber (5). An elongation element (14) is fitted on the stationary contact (2), extends in the direction of the arc splitter stack (6) and is used for accommodating an arc root. A section, which is constructed in the form of a plate, of a power supply lead of the stationary contact (2) is widened in a U-shape. The two limbs (11) of the U are bridged by a yoke (12) at their free ends. A conductor element is fitted on the yoke (12), which conductor element is in the form of a plate, is formed by a contact tongue (13) of the stationary contact (2) and by an elongation element (14) fastened thereto, and is inclined in the direction of the arc splitter stack (6) with respect to the plate-shaped section of the power supply lead.