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Document Title |
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8143980 |
Switching device
A switching device, for example a circuit breaker, has an input terminal and an output terminal for connection to electrical conductors, and two switching contacts which, when closed, close a...
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8093984 |
Installation switchgear
An installation switching device includes a housing, a main contact point having an arc quenching chamber, an input terminal, an output terminal, an impact-style armature system configured to move...
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7999641 |
Circuit breaker having reduced auxiliary trip requirements
A bimetal in a circuit breaker can deflect in a first direction or a second direction depending upon conditions. If the bimetal deflects in the second direction it can increase the force necessary...
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7986203 |
Multi-pole armature interlock for circuit breakers
A multi-pole circuit breaker and method include at least two breaker modules including circuit breakers therein. The circuit breakers include a moveable arm configured to connect and disconnect...
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7978033 |
Protection switch
A protection switch, particularly for fast switching, includes at least one single-pole protection switch module having a housing, a movable contact mounted on a switching arm for pivoting against...
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7876181 |
Earth leakage circuit breaker
A circuit breaker for overcurrent protection and earth leakage protection includes a main housing, a circuit board, a zero-phase current transformer, an earth leakage detection circuit, a trip...
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7834290 |
Protection switch
A protection switch, particularly for rapid quenching of electrical arcing, includes at least one single-pole protection switch module having a housing, a movable contact mounted on a switching arm...
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7812695 |
Tie bar for three pole switching device
A multipole switching device selectively switches electrical power from an electrical power source to a load circuit. A first control device comprises a housing mountable in a panel, an...
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7679478 |
Lighting control module mechanical override
A switching device for selectively switching electrical power from an electrical power source to a load circuit comprises a housing. An electromechanical actuator is in the housing. A fixed contact...
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7558034 |
Bi-directional ground fault circuit interrupter
The present invention relates to a family of resettable circuit interrupting devices that eliminates the need to rewire a resettable circuit interrupting device after it is installed and powered up...
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7541899 |
Multi-pole circuit breaker and apparatus for preventing deformation of driving shaft thereof
Disclosed are a multi-pole circuit breaker and an apparatus for preventing deformation of a driving shaft thereof. The multi-pole circuit breaker includes: a plurality of single pole breaking units...
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7515022 |
Circuit breaker common trip lever
A trip lever for a shared tripping device, wherein the shared tripping device is structured to operatively couple at least two circuit breakers, a primary circuit breaker and a secondary circuit...
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7352265 |
Manual trip control method and arrangement for multiple circuit interrupters
A manual trip control method and arrangement is provided to manually trip a plurality of circuit interrupters. Specifically, where the circuit interrupters include magnetic-actuator-driven vacuum...
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7132912 |
Moving contact unit for a contact arrangement in a circuit breaker
The moving contact unit (10) is intended for a contact arrangement in a circuit breaker and contains a contact mount (13) and a contact piece (11, 111, 112), which is held by the contact mount...
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7023303 |
Actuator for auxiliary switch and circuit breaker incorporating the same
A U-shaped accessory actuator clip that snaps onto the crossbar of a multipole circuit breaker is integrally molded of a compliant material with a flexible finger that actuates/deactuates an...
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6211757 |
Fast acting high force trip actuator
A trip actuator (66) includes a trip spring (106) to bias the trip arm (104) in a clockwise direction about trip arm pivot (120). In the latched and ready to operate state, the clockwise moment...
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6064001 |
High current electrical switching apparatus with poles interleaved and modules joined by interference fit of joining block in undercut grooves in molded casings
Two molded case electrical switches such as circuit breakers, network protectors, disconnect switches and transfer switches, are secured together side-by-side by joining blocks having tongues...
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6064289 |
Electromagnetic contactor with overload relay
An electromagnetic starter with an overload relay having magnetic flux shielding is disclosed for use in industrial contactor applications. The starter includes a multi-pole DC controlled contactor...
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6031437 |
Switch with electromagnetic command
A switching apparatus including an electromagnetic command device fitted with a magnetic circuit made up of a main circuit polarized by a permanent magnet and linked to a depolarizing coil and...
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5910757 |
Phase barrier for use in a multiphase circuit breaker
A method and apparatus for interrupting the flow of electrical current in a multiphase circuit path between at least one source and at least one load including a circuit breaker having an...
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5909161 |
Intermediate latch for a molded case circuit breaker
A molded case circuit breaker includes a generally "Z" shaped intermediate latch structure which has upper and lower substantially planar sections that are each bent at an angle with respect to a...
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5894259 |
Thermal trip unit with magnetic shield and circuit breaker incorporating same
A solenoid type magnetic trip assembly for a molded case circuit breaker includes an armature biased against an adjustable stop by a tension spring to set the initial gap for the magnetic trip, so...
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5818298 |
Linear amplifying apparatus using coupled non-linear amplifiers
An amplifying apparatus for linearly amplifying a desired signal using a pair of coupled non-linear amplifiers is disclosed. The amplifying apparatus comprises a limiter for separating amplitude...
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5504467 |
Circuit breaker with improved contact arm follower spring arrangement
A current limiting circuit breaker including a novel spring arrangement between the contact arms of the circuit breaker and the crossbar. The spring arrangement includes a single spring which holds...
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5467069 |
Device for adjusting the tripping threshold of a multipole circuit breaker
An adjustment device including a rotary knob for driving a positioning stud cooperating with a ramp of an oeprating component, and a ring equipped with means for selecting the angular position of...
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5298874 |
Range of molded case low voltage circuit breakers
A modular low voltage multipole circuit breaker, including a plurality of identical single-pole breaking units each including a parallelipipedic insulating box having two opposite parallel large...
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4973927 |
Two piece cradle latch, handle barrier locking insert and cover interlock for circuit breaker
A molded case circuit breaker is provided with a two piece cradle assembly having a cradle portion and a heat-treated portion. The heat-treated portion forms the latch and reset surfaces. The...
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4884047 |
High rating multipole circuit breaker formed by two adjoined molded cases
The circuit breaker is formed by two adjoined standard multipole molded cases, resin being cold-cast between the opposite side walls, comprising reliefs, of the two cases in order to provide...
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4882557 |
Multipole circuit breaker system with differential pole operation
A multiple circuit breaker system wherein each single pole breaker within the multiple breaker system have very similar structure and dimensions, except that at least one of the breakers (e.g. the...
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4754162 |
Timer controlled multipole circuit breaker
A timer controlled multipole circuit breaker has a pair of breaker contacts in each pole which are connected to load and line terminals respectively provided in the current path of each pole....
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4724411 |
Circuit breaker
A circuit breaker has a metal frame (10) disposed on a base of a housing. A trip-bar (6) made of molded plastic of like material is rotatably held on the frame (10) by insertion of a trip-bar pin...
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4625189 |
Circuit recloser with actuator for trip, close and lock out operation
In a high voltage circuit interrupter switch or recloser a single multi-function control actuator is connected to a trip bar for tripping contact operating linkage to effect opening of one or more...
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4600908 |
Circuit breaker
A circuit breaker for high-speed current-limiting breaking of a three-phase current in the event of a short-circuit condition. The breaker has three pairs of fixed and movable contactors, the...
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4382240 |
Circuit breaker
A circuit breaker having a plurality of breaker units, in each of which a movable contact of a movable contactor is separated from and engaged with a fixed contact of a fixed contactor from the...
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4342974 |
Multipolar type circuit breaker
A multipolar type circuit breaker has a plurality of breaker element assemblies corresponding to AC source pole number. Each assembly comprises a contact operating mechanism for ON and OFF...
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4278958 |
Electromagnetically operated multi-pole circuit breaker
A circuit breaker having stationary contactors provided for all of the poles thereof. Movable contactors are provided for all of the poles in correspondence to the stationary contactors. Stationary...
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4246558 |
Auxiliary feature modules for circuit breakers
Both undervoltage and shunt trip auxiliary feature modules, adapted to be mounted side-by-side with one or more circuit breaker modules include an electromagnetic trip device having a trip actuator...
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4206430 |
Bipolar protective switch
A bipolar protective switch has a two-piece housing. An electromagnet constitutes the actuating device made either in the form of a zero voltage actuator or an excess current actuator. The armature...
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4112270 |
Means connecting circuit breaker and auxiliary feature modules
A single pole circuit breaker module is constructed so that its housing is provided with frangible sections aligned with the pivot pins for the contact arm, the cradle and the operating mechanism...
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4079345 |
Multi-pole excess current circuit breaker
A multi-pole excess current circuit breaker assembly has a plurality of single-pole circuit breakers. In each of the latter the electric contacts are openable by a spring-loaded tripping mechanism...
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4077024 |
Multi-pole circuit breaker
A molded case circuit breaker comprising a case divided longitudinally into two approximate half cases. Each case defines an arcing chamber. Further, each half case has a side wall, an end wall,...
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3959752 |
Narrow multi-pole circuit breaker having bodily movable instantaneous trip structure
A plurality of single pole circuit breakers stacked side-by-side are interconnected by a tie rod connecting the magnetic armatures of their respective instantaneous trip means. When one pole is...
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3946345 |
Narrow multi-pole circuit breaker having inertia actuated overtravel for latch release
A plurality of single pole circuit breakers stacked side-by-side are interconnected by a tie rod connecting the magnetic armatures of their respective instantaneous trip means. When one pole is...
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3932825 |
Current limiting circuit breaker system
Circuit-breaker system having a response time to shortcircuits of less than 4 milliseconds have multiple coordinated pole units wired in series in each phase. The system is able to clear a fault...
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3786380 |
MULTI-POLE CIRCUIT BREAKER
A multi-pole circuit breaker is disclosed which allows selective manual making and breaking of contacts within the breaker and automatic simultaneous breaking of all breaker contacts whenever a...
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3767871 |
INTERNAL HANDLE FOR MULTI-MECHANISM CIRCUIT BREAKER INTERLOCKING MULTIPLE SWITCH ASSEMBLIES FOR SIMULTANEOUS ACTUATION
A molded case circuit breaker having multiple contact operating mechanisms is provided with an internal handle connected directly to the operating members of all of the mechanisms. The central...
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3683350 |
ELECTRICAL CIRCUIT BREAKER WITH ILLUMINATED TRIP INDICATOR
The circuit breaker has a window in a cover of its molded case through which light from a neon lamp is visible. The lamp is connected in an RC flashing circuit energized from the line side of the...
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3706056 |
PARALLEL-POLE CIRCUIT BREAKER
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3444488 |
MULTIPOLE CIRCUIT BREAKER
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3401363 |
Multipole circuit breaker with trip indicator
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