Class / Patent application number | Description | Number of patent applications / Date published |
218149000 | Arc chute assembly | 45 |
20090057273 | ARC EXTINGUISHING DEVICE OF CIRCUIT BREAKER FOR MANUAL MOTOR STARTER - Disclosed is an arc extinguishing device of circuit breaker for manual motor starter capable of swiftly extinguishing and discharging an arc generated by a fault current flowing into a motor circuit during an interruption operation of a circuit breaker, thereby enhancing the performance of interruption. | 03-05-2009 |
20090188893 | Devices, Systems, and Methods for Managing a Circuit Breaker - Certain exemplary embodiments can provide a system, which can comprise a wafer that defines an opening. The wafer can be adapted to be operatively installed between a mechanical portion of a circuit breaker and an electronic portion of the circuit breaker. When installed, the wafer can be adapted to receive a protrusion of the mechanical portion of the circuit breaker. | 07-30-2009 |
20090266793 | ELECTRICAL SWITCHING APPARTATUS, AND ARC CHUTE AND ARC MEMBER THEREFOR - An arc member is provided for an electrical switching apparatus. The electrical switching apparatus includes an operating mechanism for opening and closing separable contacts, and an arc chute disposed proximate the separable contacts to attract an arc generated thereby. The separable contacts include a stationary contact and a movable contact. The stationary contact has an edge, which is disposed in a plane. The arc member includes an arc element disposed between the stationary contact and the arc chute. The arc element has first and second portions and first and second arc attractors. The first arc attractor extends outwardly from the first portion toward the plane of the edge of the stationary contact to draw the arc from the separable contacts to the arc member. The second arc attractors, which are disposed on the second portion of the arc element, direct the arc into the arc chute. | 10-29-2009 |
20090266794 | Arc Quenching Device With an Arc Quenching Material for a Circuit Breaker - An arc quenching device is disclosed for an electrical switch having a plurality of arc quenching plates, which are arranged parallel to one another, and having at least one part composed of gassing plastic. In order to stabilize the arc, at least one embodiment of the invention provides for at least one part composed of gassing plastic to extend parallel to the arc running direction covering at least two of the quenching plates. | 10-29-2009 |
20090321393 | CURRENT-LIMITING ARC-QUENCHING DEVICE - A current-limiting arc-quenching device for an electric switching device is disclosed having at least one contact point that has a fixed and a movable contact piece, an arc-quenching laminated core, which is situated between a fixed contact guide bar and an arc baffle that is associated with the movable contact piece, being connected to the contact point in such a way that the feet of a switching arc, which is generated when the contact point is opened, run along the fixed contact guide bar and the arc baffle. The switching arc travels into the arc-quenching laminated core, where it is quenched. The device is configured such that the fixed contact guide bar and the arc baffle are coated with another material in areas bordering the arc-quenching laminated core. | 12-31-2009 |
20100126966 | Switchgear device for breaking a bidirectional direct current and installation with photovoltaic cells equipped with such a device - A switchgear device for breaking a bidirectional direct current in an electric line comprising at least two connection terminals, and an even number of pairs of separable contacts, of arc chutes associated with distinct pairs of separable contacts, and of tripping mechanisms associated with distinct pairs of separable contacts and connected to one another by a mechanical link, each arc chute being provided with an arc extinguishing chamber and with permanent magnets presenting a polarity enabling an electric arc to be removed to said arc extinguishing chamber when the current is flowing in the electric line in a predefined direction, said predefined direction being different for one half of the arc chutes. | 05-27-2010 |
20100176091 | ELECTRICAL SWITCHGEAR UNIT COMPRISING A COMPLEMENTARY ELECTRICAL FUNCTION - The present invention relates to an electrical switchgear unit designed to be fixed onto a fixing support and comprising at least one electrical switching module and at least one module housing a complementary electrical function, at least one of the complementary modules being situated next to at least one of the above-mentioned switching modules, the or each switching module comprising an arc extinguishing chamber. This unit is characterized in that the arc extinguishing chamber of the module situated facing the complementary module presents a cambered face towards the inside of said arc extinguishing chamber so as to create a space E,F inside said chamber enabling a part of the volume of the complementary module to be housed, and in that the ends of said arc extinguishing chamber encroach on the volume of the complementary module. | 07-15-2010 |
20100237047 | CIRCUIT BREAKER ARC CHAMBERS AND METHODS FOR OPERATING SAME - Embodiments provide arc chambers, and methods adapted to rapidly extinguish arcs in circuit breakers. In one aspect, a circuit breaker is provided having first and second electrical contacts, wherein at least one of the contacts is movable and has a maximum contact face transverse dimension (d), and an arc chamber including first and second sidewalls spaced by a transverse spacing (Ts). The sidewalls are provided in close proximity to each other providing a transverse arc compression ratio (TACR) less than or equal to about 2.0, wherein TACR=Ts/d. According to another aspect, an arc chamber including one or more recesses formed into a transverse sidewall is provided, as are other aspects. | 09-23-2010 |
20120043302 | Circuit Breaker and Arc Chute With Shield Apparatus - An improved circuit breaker and arc chute has a shield apparatus that includes a number of plate-like shield members that have elongated openings formed therein to receive portions of arc plates therethrough. The portions of the arc plates that pass through the shield member are received in receptacles of a support apparatus that supports the arc plates. The arc plates are themselves configured to retain the shield members against the support apparatus to protect the support apparatus from damage in the event of an electrical arc. Advantageously, the retention of the shield members between portions of the arc plates and portions of the support apparatus enables the shield members to be held in place without the use of adhesives or separate fastening systems. | 02-23-2012 |
20120085736 | DUAL BREAKING POINT ELECTRICAL JOINT - Switch assemblies and electrical distribution devices for making and breaking electrical connections in an electrical circuit are disclosed herein. One aspect of the present disclosure is directed to a switch assembly that includes a pair of electrically conductive jaws attached to a platform. The first jaw is configured to electrically connect to an incoming line of the electrical circuit, whereas the second jaw is configured to electrically connect to an outgoing line. The switch assembly also includes a blade having at least two electrically conductive plates that are attached to and spaced from each other via an electrical insulator. The blade is pivotably coupled to the platform to rotate between a disengaged position, whereat the blade is electrically decoupled from the first and second jaws, and an engaged position, whereat the blade delivers an electrical current from the incoming line through the first and second plates to the outgoing line. | 04-12-2012 |
20120211469 | CIRCUIT BREAKER WITH ARC EXTINGUISHING MECHANISM - A circuit breaker having an arc extinguishing mechanism includes a plurality of grids disposed in a longitudinal direction, each having protruding portions at both ends thereof so as to define a space therebetween, a fixing portion to support the grids, insulating plates fixed to both sides of the grids, a stator located below the grids, the stator including an arc runner and a stationary contact disposed at an upper side of the arc runner, and a mover contactable with or separated from the stationary contact with moving up and down within the space, wherein an interval between the insulating plates within the space is shorter than a width of the mover. | 08-23-2012 |
20120292291 | ARC CHAMBER FOR A CIRCUIT BREAKER AND CIRCUIT BREAKER HAVING AN ARC CHAMBER - 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. | 11-22-2012 |
20130037521 | ARC CHUTE FOR A CIRCUIT BREAKER, CIRCUIT BREAKER AND METHOD FOR ASSEMBLING AN ARC CHUTE - An arc chute for a DC circuit breaker is disclosed which includes at least one stack of a plurality of substantially parallel metal plates, the at least one stack defining a first axis A in parallel to a stacking direction; an arc space adapted to allow an arc to extend along the first axis, wherein a second axis traversing in parallel to the metal plates the at least one stack and the arc space substantially orthogonal to the first axis. Further, an arc-chute housing having at least one side wall, the at least one side wall being substantially parallel to the second axis, wherein the distance between the at least one sidewall and the metal plates is, for example, less than 5 mm, such as less than 2 mm. | 02-14-2013 |
20130140275 | TRIP MECHANISM AND ELECTRICAL SWITCHING APPARATUS INCLUDING A TRIP MEMBER PUSHED BY PRESSURE ARISING FROM AN ARC IN AN ARC CHAMBER - An electrical switching apparatus includes separable contacts, an operating mechanism structured to open and close the separable contacts, and a trip mechanism cooperating with the operating mechanism to trip open the separable contacts. The trip mechanism includes a trip latch, and an arc chamber operatively associated with the separable contacts. The arc chamber includes a plurality of arc plates and a barrier disposed between the arc plates and the trip latch. The barrier has an opening therein. A trip member is disposed in or about the opening of the barrier of the arc chamber. During interruption of current flowing through the separable contacts, pressure arising from an arc in the arc chamber pushes the trip member away from the barrier of the arc chamber to engage the trip latch and cause the trip mechanism to trip open the separable contacts. | 06-06-2013 |
20130186863 | ARC CHUTE ASSEMBLY AND METHOD OF MANUFACTURING SAME - An arc chute assembly includes a housing having a first wall, a second wall, and a pair of side walls coupled to the first wall. The walls configured to form an arc area. The housing further having a divider wall coupled to the first wall between the side walls. The divider wall configured to form a first sub-arc area, a second sub-arc area, and an arc plate area. The first sub-arc area and the second sub-arc area are configured to be in flow communication with the arc plate area. The arc chute assembly further comprises a support coupled to the first wall and the side walls, and an arc plate coupled to the support. The arc plate having a body extending between the side walls and over the divider wall. | 07-25-2013 |
20140263189 | CIRCUIT INTERRUPTION DEVICE WITH CONSTRICTIVE ARC EXTINGUISHING FEATURE - A circuit interruption device includes at least one constriction zone. The constriction zone provides for interference with arcing of an electrical signal. The device may include at least one expansion zone. The device may include at least one movable component to assist in creation of the at least one constriction zone. A method of fabrication is provided. | 09-18-2014 |
20140339196 | ARC EXTINGUISHING UNIT FOR MOLDED CASE CIRCUIT BREAKER - There is provided an arc extinguishing unit of a molded case circuit breaker (MCCB) having a structure in which grids and side plates forming an arc chamber are coupled in an inserted manner, facilitating an operation, and intervals of grids are uniformly maintained and a configuration of the grids is not damaged, thus maintaining stable performance and allowing for maintenance. | 11-20-2014 |
20140374384 | ELECTRICAL SWITCH - An electrical switch is disclosed including a rotatably mounted contact bridge which includes a movable contact, wherein the movable contact interacts with a stationary contact of the electrical switch for the purpose of closing or opening the electrical circuit as a result of rotation of the contact bridge. In at least one embodiment, the surfaces at the point at which contact is made between the movable contact and the stationary contact are at least partially covered by a protective material for protecting against soiling and/or damage due to contact-erosion materials, wherein the protective material is a paper-like fleece. | 12-25-2014 |
20150034601 | SWITCHGEAR ARRANGEMENT - A switchgear has an interrupter unit that includes an arc gap. A first and a second switching contact piece are movable relative to one another. A switching-gas duct originates in the arc gap and connects the arc gap to the surroundings of the interrupter unit. A hollow vessel arrangement delimits at least some sections of the switching-gas duct and is connected to one of the contact pieces. The hollow vessel arrangement includes an external outlet opening for the switching-gas duct. | 02-05-2015 |
20150053648 | EXTINGUISHING CHAMBER FOR AN ELECTRIC PROTECTION APPARATUS AND ELECTRIC PROTECTION APPARATUS COMPRISING ONE SUCH CHAMBER - The present invention relates to an arc extinguishing chamber for an electric protection apparatus comprising an arc formation chamber containing a stationary contact and a movable contact which, at the moment they separate, form an arc between them, said arc formation chamber communicating with the inlet of a second chamber called arc extinguishing chamber, at least one separating wall placed in a volume situated downstream from said arc extinguishing chamber, said wall extending in the direction of the gas flow so as to perform partitioning of the above-mentioned volume in the direction of this flow of the gases, and at least one exhaust outlet enabling the quenching gases to be removed to the outside of the apparatus. This chamber is characterized in that the above-mentioned separating wall(s) extend(s) up to the panel of the apparatus comprising the above-mentioned exhaust outlet(s) so as to perform partitioning in the direction of the flow to these outlets and to thereby form at least a first removal duct and a second removal duct, said ducts each being associated with an exhaust outlet, and enabling a substantially complete separation to be achieved between a first flow called main flow and a second flow called secondary flow, said flows being emitted at the outlet of the arc extinguishing chamber and respectively flowing in the first duct and the second duct. | 02-26-2015 |
20150114934 | BI-DIRECTIONAL DIRECT CURRENT ELECTRICAL SWITCHING APPARATUS INCLUDING SMALL PERMANENT MAGNETS ON FERROMAGNETIC SIDE MEMBERS AND ONE SET OF ARC SPLITTER PLATES - An electrical switching apparatus for bi-directional direct current switching and interruption includes separable contacts, an operating mechanism to open and close the contacts, and an arc chute. The arc chute includes two ferromagnetic side members each having a first side and an opposite second side, the first side of a second ferromagnetic side member facing the first side of a first ferromagnetic side member, a first permanent magnet disposed on the first side of the first side member, a second permanent magnet disposed on the first side of the second side member, and a single set of a plurality of arc splitter plates disposed between the permanent magnets. The permanent magnets are substantially smaller in size than each of the side members. The arc chute is divided into two arc chambers each of which is for a corresponding direction of DC flow through the contacts. | 04-30-2015 |
20150129550 | CIRCUIT BREAKER GAS DIRECTING SYSTEM - A gas directing system for a circuit breaker is disclosed. The system includes an insulative housing that fits over vents that convey hot gases upon operation of the circuit breaker. The housing has phase partitions that separate phase sections from one another, and transverse partitions that separate a venting sections for each phase from terminal sections. Gas diverting structures are provided in the venting sections that redirect hot gases towards apertures through which the gases vent. The overall structure may be much lower profile than previous design spacing requirements. | 05-14-2015 |
20150129551 | MOLDED CASE CIRCUIT BREAKER - Disclosed is a molded case circuit breaker. The molded case circuit breaker includes a case; an interrupter assembly installed in the case, and provided with an arc gas outlet for discharging arc gas generated from inside of the interrupter assembly to outside; an exhaustion guiding portion disposed between the interrupter assembly and the terminal portion, and provided with a discharge chamber therein, to thus provide an arc gas passage between the arc gas outlet and a vent chute of the terminal portion; and an exhaustion cover mounted to the case with a structure to cover the exhaustion guiding portion, to thus block the arc gas passage. | 05-14-2015 |
20150136740 | ARC BAFFLING DEVICE - 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. | 05-21-2015 |
20160035517 | PLATE STACK FOR A COOLING DEVICE IN INSTALLATION DEVICES - A plate stack in a cooling device for hot gases generated in electric, installation devices, preferably in low-voltage power switches. The plate stack is arranged in the flow path of the hot switching gases into a window, the plate stack having identical plates made of a material with a high heat conductivity. Each of the plates is provided with spacer elements which correspond to the spacing of the plates, and the plates are arranged in the stack such that the orientation of the plates changes one after the other. | 02-04-2016 |
20160055998 | High-safety Surge Protective Device - 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. | 02-25-2016 |
20160163482 | CIRCUIT BREAKERS WITH MOVING CONTACT HAVING HEEL-TOE ACTION - Circuit breakers with moving contacts having heel-toe action are configured to direct arcing across a small portion of a stationary contact surface to an adjacent arc chute to thereby alleviate deterioration due to arcing and improve conductivity of a major portion of the stationary contact and moving contact surface over time. | 06-09-2016 |
218150000 | Material | 5 |
20090200272 | ARC-EXTINGUISHING PROCESSED RESIN ARTICLE AND CIRCUIT BREAKER THAT USES SAME - An arc-extinguishing processed resin article is disclosed that exhibits an excellent arc-extinguishing behavior, heat resistance, pressure resistance, and molding processability, and a circuit breaker that uses this arc-extinguishing processed resin article are provided. The circuit breaker includes a stationary contactor that has a stationary contact point, a movable contactor that has a movable contact point contacting the stationary contactor and that carries out a switching operation with the stationary contactor, and an arc-extinguishing device that extinguishes the arc generated when the stationary contactor and movable contactor engage in a switching operation. The circuit breaker uses, as the arc-extinguishing device, an arc-extinguishing processed resin article obtained by molding a resin composition containing (A) polyolefin resin that has the hydroxyl group substituted for a portion of the hydrogen atoms in the methylene chain and that contains 0.2 to 0.7 mole hydroxyl group per mole methylene group, (B) a crosslinking agent that has a terminal unsaturated group, and (C) metal hydroxide whose surface has been treated with higher aliphatic acid, wherein the resin composition contains 5 to 60 mass parts of the metal hydroxide (C) per 100 mass parts of the polyolefin resin (A), and radiation-induced crosslinking is executed on the resin composition after the molding thereof. | 08-13-2009 |
20100059481 | QUENCHING ELEMENT, QUENCHING UNIT, QUENCHING AND PLUGGING UNIT, AND SWITCHING DEVICE - A plate-shaped quenching element for a quenching unit of a switching device is produced of an electrically and also magnetically conductive plastic. In a special embodiment, the plastic is composed of a flame retardant material. At least one embodiment relates to a quenching unit and a quenching and plugging unit having a plurality of such quenching elements. Furthermore, at least one embodiment of the invention relates to a switching device having such a quenching unit and/or such a quenching and plugging unit. | 03-11-2010 |
20110180515 | EXTINGUISHING PLATE FOR AN ARC EXTINGUISHING CHAMBER - The invention relates to a quenching plate made of a matrix composite material, comprising a ferromagnetic phase in which a high temperature stable phase is embedded. Example of an embodiment: In order to produce the matrix composite material, 96 wt. % iron and 4 wt. % MgO are mixed. The powder mixture is pressed into green plates. The green plate are sintered and rolled into the desired thickness of 0.8 mm to 1.2 mm The rolling can be done in several rolling steps, between which the sinter plates are aged. After the last rolling step, the sinter plates are preferably aged once more. The plates produced of the matrix composite material in said way are then coated galvanically with a 5 to 10 micrometer thin electrically conductive layer, for example a copper layer. | 07-28-2011 |
20110259852 | Valve system for an arc extinguishing chamber and circuit breaker comprising same - 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. | 10-27-2011 |
20120145675 | SINGLE DIRECT CURRENT ARC CHAMBER, AND BI-DIRECTIONAL DIRECT CURRENT ELECTRICAL SWITCHING APPARATUS EMPLOYING THE SAME - A single direct current arc chamber includes a ferromagnetic base having first and opposite second ends, a first ferromagnetic side member disposed from the first end, a second ferromagnetic side member disposed from the opposite second end, a third ferromagnetic member disposed from the ferromagnetic base intermediate the ferromagnetic side members, a first permanent magnet having a first magnetic polarity disposed on the first ferromagnetic side member and facing the third ferromagnetic member, and a second permanent magnet having the first magnetic polarity disposed on the second ferromagnetic side member and facing the third ferromagnetic member. | 06-14-2012 |
218151000 | Metal plates structure | 13 |
20080277382 | Devices, Systems, and Methods for Dissipating Energy From an Arc - Certain exemplary embodiments can provide a system, which can comprise a set of substantially planar arc plates. The substantially planar arc plates can be adapted to cause a dissipation of energy caused by an arc in a circuit breaker. A housing can be adapted to receive each of the set of substantially planar arc plates. | 11-13-2008 |
20090255906 | Arc chute assembly for a circuit breaker - An arc chute assembly includes a housing having a lateral axis and a quenching portion disposed within the housing. The quenching portion includes at least two deion plates being spaced along the lateral axis of the housing and each having a cut portion wherein the cut portions are staggered along the lateral axis with respect to one another and are configured to mitigate an arc. | 10-15-2009 |
20100258531 | ARC CHAMBER FOR A SWITCHING DEVICE, AND SWITCHING DEVICE COMPRISING SAID ARC CHAMBER - The present invention relates to an arc chamber for a switching device, in particular a circuit breaker, a disconnector or a contactor, with a high interruption power, to be used preferably in low-voltage electrical systems. The arc chamber according to the invention comprises a plurality of substantially U-shaped metal plates and a casing made of electrically insulating material provided with opposed internal grooves for insertion of said metal plates. The arc chamber moreover comprises one or more polar expansions housed in corresponding containment seats arranged within the casing. Each of said containment seats is configured in such a way as to insulate the polar expansions from the metal plates. The invention likewise relates to a switching device comprising said arc chamber. | 10-14-2010 |
20100301015 | ELECTRICAL SWITCHING DEVICE WITH A THERMAL RELEASE - The invention describes an arc-quenching arrangement for an electrical service switching device, with a fixed contact piece, a movable contact piece, with an arc splitter stack having arc splitter plates, each arc splitter plate having a cutout which is open towards the arc formation point, has a V-shaped notch and tapers in the form of a funnel in the arc running direction, and the arc being guided into the arc splitter stack via a first arc guide rail, which is associated with the fixed contact piece, and a second arc guide rail, which is associated with the movable contact piece. The first arc guide rail has a first, rectangular section, which faces the arc formation location, and a second section, which adjoins the first section and is in the form of a rectangular trapezium and whose first limb extends at an angle with respect to the mid-longitudinal axis of the first section and away therefrom. | 12-02-2010 |
20110017709 | ELECTRICAL SWITCHING APPARATUS AND ARC CHUTE ASSEMBLY THEREFOR - An arc chute assembly is provided for an electrical switching apparatus. The electrical switching apparatus includes a housing and separable contacts enclosed by the housing. An arc is generated in response to the separable contacts being separated. The housing includes a number of arc chambers each having a first side and a second side disposed opposite and spaced apart from the first side. The arc chute assembly includes a plurality of first arc plates extending outwardly from the first side of a corresponding one of the arc chambers toward the second side of the corresponding one of the arc chambers, and a plurality of second arc plates extending outwardly from the second side of the corresponding one of the arc chambers toward the first side of the arc chamber. None of the arc plates engages the opposing side of the arc chamber. | 01-27-2011 |
20110253676 | SWITCH UNIT AND CIRCUIT BREAKER FOR A MEDIUM VOLTAGE CIRCUIT - A switch unit | 10-20-2011 |
20110290761 | ARC CHUTE, CIRCUIT BREAKER FOR A MEDIUM VOLTAGE CIRCUIT, AND USE OF A POLYMER PLATE - The disclosure relates to an arc chute for a medium voltage circuit breaker having a housing, at least one stack of a plurality of substantially parallel metal plates arranged in the housing, the at least one stack defining a first axis in parallel to a stacking direction; an arc space arranged in the housing, wherein the arc space is adapted to allow an arc to expand therein; and at least one arc quenching plate disposed in the housing, wherein the arc guiding plate has at least one surface which has a surface plane extending in parallel to the first axis. Further, the present disclosure relates to a circuit breaker having a switching unit with a first switch contact and a second switch contact, movable between a first position, wherein the first switch contact contacts the second switch contact, and a second position, wherein the first switch contact is separated from the second switch contact, and an arc chute. Additionally, the disclosure relates to a polymer plate selected of a group containing a flame retardant polymer, a flame retardant polymer having a flame retardant filler, and a polymer having a flame retardant filler as an arc quenching plate. | 12-01-2011 |
20140151340 | Arc Chute Arrangement for Arc Quenching in Electrical Switching Device - An arc chute arrangement for arc quenching in electrical switching device, said arrangement comprising a plurality of deion plates, each said deion plates further comprising a pair of plates having an ablative material sandwiched therebetween; a lining means for holding said deion plates; wherein said deion plates having a chamfered profile at one corner to generate high magnetic field that drive the arc inside arc chute and said chamfered profile arranged alternatively thereby substantially lengthening the arc. | 06-05-2014 |
20140339197 | ARC EXTINGUISHING CHAMBER FOR AN ELECTRIC PROTECTION APPARATUS AND ELECTRIC PROTECTION APPARATUS COMPRISING SAME - The present invention relates to an arc extinguishing chamber of an electric protection apparatus comprising an arc formation chamber containing a stationary contact and a movable contact which, when they separate, form an arc between them, said arc formation chamber communicating with the inlet of a second chamber, called arc extinguishing chamber. This chamber comprises a wall called balancing wall, substantially solid at least on its central part, said wall being located downstream from the arc extinguishing chamber and being formed and arranged with respect to the arc extinguishing chamber in such a way as to slow down the exhaust flow of the breaking gases on the side of the arc extinguishing chamber where the gases go first, and enhancing flow of the exhaust gases on the opposite side, the exhaust gases being stopped by the central part of the wall and escaping via the edges of the wall. | 11-20-2014 |
20140346146 | Profiled Arc Splitter Plate - A profiled arc splitter plate for a switch having a fixed contact and a movable contact is provided to increase electromagnetic attractive forces on the arc generated during contact separation. The plate ( | 11-27-2014 |
20150348720 | ELECTRICAL SWITCHING APPARATUS, AND ARC CHUTE ASSEMBLY AND BARRIER MEMBER THEREFOR - A barrier member is for an arc chute assembly of an electrical switching apparatus. The arc chute assembly comprises a first sidewall and a second sidewall opposite and spaced apart from said first sidewall. The barrier member comprises a body portion structured to be disposed between said first sidewall and said second sidewall, said body portion comprising a first support portion, a second support portion, and a cover portion connecting said first support portion to said second support portion; a first containment portion extending from said first support portion, said first containment portion being structured to be disposed proximate said first sidewall; and a second containment portion extending from said second support portion toward said first containment portion, said second containment portion being structured to be disposed proximate said second sidewall, wherein said second containment portion is spaced from said first containment portion. | 12-03-2015 |
20160181029 | ELECTRIC SWITCH HOUSING | 06-23-2016 |
20160254107 | ARC QUENCHING CHAMBER INSERT | 09-01-2016 |