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| Number | Title | Issue Date |
| 7432787 | Motorized loadbreak switch control system and method A control system and method for a motorized high voltage loadbreak switch. ... | 10/07/2008 |
| 7336146 | Moving contact carrier arrangement for a circuit breaker mechanism A circuit breaker mechanism comprises a line terminal, a load terminal and a set of contacts between the terminals. A fixed contact is connected to the line terminal, and a moving contact is connected to the load terminal via a conductive frame and a load sensing el... | 02/26/2008 |
| 7259944 | Method for operating a switch with a connectable current limiter and corresponding arrangement Power switches are provided with measures for preventing a recommendation of the arc from the secondary current path to the main current path and/or measures for returning the current limiter during the recommutation of the light art. A corresponding arrangement for... | 08/21/2007 |
| 7245473 | Switchable lightning arrester system The switchable lightning-arrester system has a safety-switchable connector (10), which, for differing power-line features, can include optionally a counter-lever safety connector (14), a slide safety connector (40), a hinged safety connector ( | 07/17/2007 |
| 7161235 | Semiconductor apparatus of a plurality of semiconductor devices enclosed in case and wiring method therefore A drain electrode wiring conductor through which a main current of a MOS transistor takes the form of a flat board, being inserted into a first side of the frame of a case, and extends along the first side. The source electrode wiring conductor also takes the form o... | 01/09/2007 |
| 7141751 | Breaker for providing successive trip mechanism based on PTC current-limiting device Disclosed is a breaker for providing successive trip mechanism based on PTC current-limiting device, which includes a first switch having first fixed/movable contact points; a second switch having second fixed/movable contact and connected to the first switch in par... | 11/28/2006 |
| 7081596 | Arc-quenching device for circuit breakers having double-break contacts 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 magn... | 07/25/2006 |
| 7075027 | Spring-charged mechanism assembly employing two trunnion members moveable in different planes and circuit interrupter employing the same A mechanism assembly is for a vacuum circuit interrupter including a vacuum housing including a stationary contact and a moveable contact, and an operating mechanism including a drive rod. The mechanism assembly cooperates with the drive rod to open and close the co... | 07/11/2006 |
| 7019228 | Method for controlling a displaceable electrical switching module The invention relates to a method for controlling an electrical switching module which can be displaced between an entry position and an exit position. The switching module comprises switching contacts of vacuum switching tubes; an isolating element which can be als... | 03/28/2006 |
| 6965088 | Interrupting apparatus having operations counter and methods of forming and using same A portable circuit interrupting apparatus for use on a circuit isolating device and associated methods of formation and use are provided. The portable circuit interrupting apparatus includes a main housing body and a sleeve coaxially mounted therein. The sleeve is s... | 11/15/2005 |
| 6958671 | Electrical contactor with positive temperature coefficient resistivity element The present invention provides an electrical contactor for connecting and disconnecting an electrical power source to an electrical device wherein the electrical power source is electrically connected to a line terminal having a line terminal electrical contact and ... | 10/25/2005 |
| 6917269 | Low-voltage circuit breaker with an electric arc extinction system An electric arc extinction chamber system, especially for low-voltage circuit breakers of very high nominal current intensities, wherein parallel electric arc extinction chamber inserts are provided in a housing extending over the entire width of a pole-face arc. Th... | 07/12/2005 |
| 6853525 | Vacuum arc interrupter actuated by a gas generated driving force A vacuum arc interrupter that includes a vacuum chamber assembly and a pressure chamber assembly. The vacuum chamber assembly includes a first, fixed contact disposed within the vacuum chamber and a second, movable contact disposed within the vacuum chamber. A rod i... | 02/08/2005 |
| 6813127 | Blade tip for puncturing cupro-nickel seal cup A vacuum arc interrupter that includes a vacuum chamber assembly and a pressure chamber assembly. The vacuum chamber assembly has a first conductor coupled to a power line, a non-conductive housing and a seal cup. The pressure chamber assembly has a second conductor... | 11/02/2004 |
| 6797909 | High-voltage loadbreak switch with enhanced arc suppression A high-voltage loadbreak switch operates submersed in a dielectric fluid and may be configured to switch one or more phases of power using one or more phase switches. Each phase switch may include first and second stationary contacts. The first stationary contact ma... | 09/28/2004 |
| 6313416 | Current carrying switch structure A switch assembly for a circuit having an insulating base, a blade, a blade hinge member that allows for rotation of the blade about a pivot position, a first contact member, identical in construction to the blade hinge member, having opposing sidewalls t... | 11/06/2001 |
| 6300585 | Operation counter for a circuit interrupter An operation counter arrangement is provided for a circuit interrupter for opening a high-voltage circuit-isolating device. The operation counter arrangement responds to actual operations via response to a moving contact arrangement of the circuit interru... | 10/09/2001 |
| 6252190 | Electrical high speed circuit breaker with explosive charges including ablative arc extinguishing material A simple high-speed circuit breaker which is cheap to produce is specified for alternating currents which have to be switched off, which switches such currents off within one half-cycle at the current zero crossing, by means of a gas-generating explosive ... | 06/26/2001 |
| 6242707 | Arc quenching current limiting device including ablative material A current limiting device for protecting electrical circuits has a case and a pair of separable electrodes disposed within the case. Each electrode has a plurality of openings with an ablative member abutting the openings at an outer surface of the electr... | 06/05/2001 |
| 6207916 | Electric arc explosion chamber system An arcing chamber system having one or more chamber bodies connected in series, wherein one or more arcing chamber modules, are arranged in each chamber body is present. A plurality of arcing chamber modules may be employed to achieve for various contact ... | 03/27/2001 |
| 6188035 | Electrical contact wear and temperature indicator The design of electrical switches that operate under load (with current flowing) requires replacement of the electrical contact after erosion and wear experienced by arcing and raised temperatures reduce functionality below acceptable limits. A quantity o... | 02/13/2001 |
| 6107590 | Circuit-breaker with an explosive charge ignited during opening operation Extending between a fixed tulip contact (1) and a slide tulip (4) is an arcing chamber (5) which is occupied in the closed position by a movable contact pin (3) which fills up both an exhaust (9) surrounded by the slide tulip (4) and a blowout opening (7)... | 08/22/2000 |
| 6023036 | Electrical contact wear and temperature indicator The design of electrical switches that operate under load (with current flowing) requires replacement of the electrical contact after erosion and wear experienced by arcing and raised temperatures reduce functionality below acceptable limits. A quantity o... | 02/08/2000 |
| 5945650 | Polyphase rotary switch including arc chamber system with arc grids, line shields and baffles A multi-phased switch support base including a molded top cover and a molded bottom base each having interior and exterior walls which divide the interiors. When assembled together the base is divided into compartmentalized arc chambers which function to ... | 08/31/1999 |
| 5874873 | Electric control apparatus An electric motor control apparatus includes an electrical current control apparatus which is operable to limit current to an electric motor. When the electric motor is a three-phase motor, three current limiting switch assemblies are provided in the elec... | 02/23/1999 |
| 5847630 | Compact circuit breaker incorporating a polymer current limiter A compact current limiting circuit breaker utilizes a polymer current limiter, an arc rail and an arc gap for effective overcurrent protection. Upon the occurrence of contact separation an arc is drawn between the circuit breaker contacts and driven towar... | 12/08/1998 |
| 5844187 | Single piece arcing contact for a circuit breaker A circuit breaker having a movable load contact arm (14'), which pivots between an open position and a closed position, and a stationary line contact arm (16'). The circuit breaker includes an arcing contact structure (210) which is pivotally mounted on t... | 12/01/1998 |
| 5773777 | Circuit-interrepting device with handling features A circuit-interrupting device for electrical power distribution and transmission systems is provided having improved handling provisions for removal and installation with respect to conventional mountings. The handling provisions permit the circuit-interr... | 06/30/1998 |
| 5742015 | Electric current switching apparatus with unitized removable contacts A sealed contactor for switching electric current has a switching assembly that includes a movable contact which selectively bridges a pair of stationary contacts to provide an electrical path therebetween. The moveable and stationary contacts are mounted... | 04/21/1998 |
| 5717184 | High-voltage circuit-breaker that inserts a resistance on closure The present invention relates to a high-voltage circuit-breaker including a casing that is filled with a dielectric gas and that contains a first arcing contact and a second arcing contact, which arcing contacts are mounted to move in opposite directions ... | 02/10/1998 |
| 5629506 | Low voltage AC contactor including high recovery voltage gas system An AC contactor having a high recovery voltage strength includes a contact assembly and a high recovery voltage gas system coupled to the contact assembly. The contact assembly includes two contact pads per electrical phase, with one of the contact pads b... | 05/13/1997 |
| 5565828 | Circuit breaker A circuit breaker with an input side and an output side for connecting and disconnecting conductors in an electrical circuit comprising a magnetic breaker device which acts on a latching mechanism unit for opening a contacting device in case of overload, ... | 10/15/1996 |
| 5554963 | Gas-filled plastic enclosed relay A relay includes a plastic enclosure, contacts disposed in the plastic enclosure for selectively operating to make and/or break at least one electrical connection, a gas filling containing at least one electronegative gas, and a sealed plastic encapsulati... | 09/10/1996 |
| 5495083 | Electric switch device with separable contacts including fixed contact mounted current limiter and shunt conductor 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 curr... | 02/27/1996 |
| 5483416 | Adjustable insulating barrier arrangement for air insulated padmounted switchgear A barrier arrangement for use in a multiple-phase padmounted switchgear includes a pair of insulated upper and lower barrier panels mounted in spaced vertical tandem and stationary relation one above the other so as to define a gap therebetween and an ins... | 01/09/1996 |
| 5469050 | High-voltage measurement device A high-voltage measurement device for an electrical high-voltage switchboard plant having an measurement electrode built into an encapsulating housing, as well as an electrical conductor which conducts a measurement signal provided by the measurement elec... | 11/21/1995 |
| 5457292 | Load interrupting switch for live front padmounted switchgear A load interrupter device is provided for live front padmounted high voltage switchgear unit wherein circuit interruption is independent of the speed at which a lineman opens the switch of the switchgear. The interrupter includes an insulating body having... | 10/10/1995 |
| 5448030 | Gas insulated circuit breaker A gas insulated circuit breaker includes a closed tank filled with an insulation gas, one pair of separable contacts disposed in the closed tank, a supporting frame supporting the closed tank, an opening spring for performing an opening operation of the p... | 09/05/1995 |
| 5440284 | Industrial-rated circuit breaker having universal application A molded case circuit breaker enclosure and operating components are provided with additional features to enable compliance with a variety of international electrical requirements for sales in the world market. The circuit breaker operating handle is prev... | 08/08/1995 |
| 5428195 | Current limiter unit for molded case circuit breakers A self-contained current limiter unit allows lower short-circuit-rated circuit breakers to be utilized within industrial applications. The unit is electrically-connected in series with the circuit breakers and the protected load to limit the short circuit... | 06/27/1995 |
