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8013268 |
Circuit breaker with a double acting circuit-breaking chamber and an inverted structure
This invention relates to a circuit breaker (1) for high or medium voltages, of the type having a drive bar (70) coupled to a drive member, and a circuit-breaking chamber (2) facing it and having...
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7875822 |
Ablative-based multiphase current interrupter
A multiphase current interrupter is provided for interrupting a phase current between two contacts in an electrical phase. The current interrupter includes a first ablative chamber disposed around...
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7732727 |
Heavy-duty circuit-breaker with sealing against hot gas
The heavy-duty circuit-breaker with arc blowing has an element which is sensitive to hot gas and/or to gas pressure and is protected by means of a seal against a hot-gas flow. The seal is...
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7432787 |
Motorized loadbreak switch control system and method
A control system and method for a motorized high voltage loadbreak switch.
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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)...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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5428328 |
Mid terminal for a double break circuit breaker
A mid terminal for a double break circuit breaker comprises first and second elongated conductive plates, where each of the plates have first and second ends. The second end of the first plate is...
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5420555 |
Plural sealed contact units with common electromagnetic operating mechanism
A sealed contact unit that attains stabilized contact switching operation and effective dimensional minimization with an arrangement wherein a switching contact section including opposing movable...
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5418511 |
D.C. electromagnetic contactor
Molded insulating shell halves are secured together around a blowout coil, stationary and movable contacts to pivotally trap an armature assembly therebetween. Windows are provided in the shell...
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5416286 |
High amperage, high efficiency electrical slide switch assembly with plug and socket contacts
A high amperage switch is provided for interrupting flow of power through a circuit. First and second connectors are connected in the circuit with the circuit being open between the first and...
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5416455 |
Direct current switching apparatus
A two-pole switch for DC current has a housing formed by a pair of open shells abutting each other to enclose components of the apparatus. Each shell rigidly holds a stationary contact, and an...
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5410116 |
Gas isolated disconnecting switch and gas isolated switching device
A gas isolated disconnecting switch is provided which performs a sufficient restriking surge suppressing function, induces no adverse effect on the operation of a circuit breaker disposed within...
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5403983 |
Arc quenching apparatus for circuit breakers
An arc quenching apparatus for circuit breakers includes a quenching space (10) in which each phase has a stationary contact (11) and a knife contact (12) pivotable in relation thereto, and which...
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5326947 |
Arc extinguishing device made of conductive plastic
The present invention provides a static dissipative composition as a method of removing electric potential from an arc extinguishing device in an electrical distribution device. The inventive...
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5319167 |
Electrical contactor employing a rotary disc
An electrical contractor device (80) for controlling the flow of electrical power from a source of electrical power to an electrical device according to a command signal from a controller utilizing...
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5122625 |
Circuit breaker
In a circuit breaker of double break type, a first moving contact arm and a second moving contact arm are pivoted on a common pin shaft in a manner to move mechanically independent from each other...
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5006679 |
High voltage switch assembly
A high voltage switch assembly includes a pair of electrically conductive contacts (2, 2a, 2b, 2c, 2d, 2e) connectible in a power line from a high voltage source, and a portion of solid...
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4986161 |
Apparatus and associated method for reducing electrical switch arcing
Electrical circuit inductively coupled to the circuit of an electromagnetic projectile launcher for beneficially reducing switch arcing duration and switch arc energy dissipation.
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4938113 |
Electromagnetic projectile launcher with reduced muzzle arcing and associated method
Electrical circuitry for preventing or substantially reducing electrical arcing at the muzzle of an electromagnetic projectile launcher. The circuitry provides a plurality of switches which...
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4931603 |
Molded case circuit breaker movable contact arm arrangement
A molded case circuit breaker movable contact arm electrically connects with the circuit breaker load terminal without requiring a flexible electrical conducting braid. The contact arm is pivotally...
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4886945 |
Replaceable bushing and contact assembly for blade type air insulated switchgear
Improved switchblade-type, air dielectric switchgear apparatus is provided which utilizes a minimum of supporting insulators and incorporates readily field-replaceable bushing assemblies so that...
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4847455 |
Electric switching device
The switching device has a fixed contact which cooperates with a movable contact secured to a movable contact carrier. The contacts are connected to runner rails for the arc that is created upon...
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