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Patent Searching and Data


Matches 451 - 500 out of 3,653

Document Document Title
JP2012099240
To shorten the initial magnetic gap between the magnetic pole of a fixed core and a movable core without reducing the trip stroke of the movable core, and to ensure a high attraction of the movable core to the fixed core.On the magnetic ...  
JP2012095382
To provide a distribution board in which the generation of an arc is suppressed.The distribution board includes a trunk switch, a DC protector 4, and an attaching plate 6 on which the trunk switch and the DC protector 4 are disposed on t...  
JP2012089517
To provide a circuit breaker having a current limiting function in which it is hard to illegally use and modify, and when regularly changing a contract current, an operation current according to the contract current can be changed easily...  
JP2012089295
To obtain a circuit breaker which has high breaking capacity accomplished by devising the shape of coil without enlarging the outer shell.The circuit breaker includes an opening/closing mechanism part having a handle and disposed between...  
JP2012089416
To provide a circuit breaker in which an arc generated between a fixed contact and the movable contact element of a movable contact maintains the movable contact element in open pole state after commutation to suppress restrike phenomeno...  
JP2012089372
To provide a circuit breaker capable of supporting both "a surface connection type" and "a rear connection type" and obtaining a sufficient insulation distance.A circuit breaker includes an opening/closing mechanism which opens and close...  
JP2012089376
To provide a circuit breaker which increases a pressure in a breaking chamber to a high pressure during breaking due to the occurence of a large current and improves breaking performance.A circuit breaker includes make and break contacts...  
JP2012079586
To provide a technology capable of preventing a circuit breaker from contacting with a wiring connection part.A terminal cover for covering a plurality of terminals provided at an end portion of a circuit breaker 10, comprises an upper s...  
JP2012079465
To realize an automatically restoring overcurrent circuit breaker which is built in a compact body by adopting simple means for detecting surge currents.The automatically restoring overcurrent circuit breaker includes a cutoff circuit 10...  
JP2012080728
To suppress coming off of a fitting body arranged on the rear surface side of a fitting part onto the rear surface side, while to easily hold the fitting body at a set fitting position of a fitting hole by utilizing the configuration.A f...  
JP2012079571
To provide a support structure for a movable contact which is improved to ensure stable open/close operation and contact between contact points, by minimizing effects on displacement of the movable contact caused by size variation of ass...  
JP2012079701
To provide a trip button mechanism of an externally-operable handle for a circuit breaker.An embodiment of the present invention provides a trip button mechanism of an externally-operable handle for a circuit breaker which operates a cir...  
JP2012074336
To provide a circuit breaker CT output signal leader line accommodation structure which restrains the CT output signal leader line of a built-in current transformer (CT), which is led out from a branch breaker, from inadvertently touchin...  
JP2012069292
To provide a circuit breaker capable of restricting excessive rotation of other end of a thrust bar, while preventing failure of the circuit breaker.A circuit breaker comprises: a contact part 13; a handle wheel 140 which is supported ro...  
JP2012069391
To provide a circuit breaker which has high breaking performance over a range from a small current to a large current.A circuit breaker comprises: a case for accommodating a movable contact maker having a movable contact, a stationary co...  
JP2012064406
To provide a repulsion-type circuit breaker which is excellent in assemblability and maintainability and is capable of cutting down costs.A mold case for housing components comprises: a case body 54; and a cover 55 which is mounted on th...  
JP2012059585
To provide a circuit breaker which is capable of commutating an arc on the movable contact side to an arc commutation plate, even in a relatively small-current region.The circuit breaker comprises: a first fixed contact 1; a second fixed...  
JP2012054176
To provide a circuit breaker in which damage on the housing due to pressure rise of arc gas is prevented at the time of overcurrent interruption, and interruption performance which promotes arc-suppression is maintained even if the break...  
JP2012054191
To provide a circuit breaker that equalizes electromagnetic repulsive forces to be operated to a power supply side of a bridging part of a movable contactor and a load side at current-limiting opening, and that enables a current-limiting...  
JP2012043541
To provide a circuit breaker that suitably moves an arc between contacts toward an arc-extinguishing device even in a relatively small current area without making a device large-sized.Each electrode includes a pair of front and rear fixe...  
JP2012043806
To provide a bipolar circuit breaker capable of securely preventing incorrect line connection at low cost, with a function of enabling prevention of the incorrect line connection easily, and capable of reducing work man-hours for line co...  
JP2012043565
To provide a circuit breaker that increases driving power for an arc to arc-extinguishing chambers even after arcs move to arc runners.In the circuit breaker which includes a first fixed contact 1 and a second fixed contact 2, a movable ...  
JP2012038535
To provide a sealing structure of a sealing cover in which an illegal seal opening can be easily found with visual observation even when it is re-attached in a forcible manner after the seal is illegally opened, and sealing can be simply...  
JP2012038581
To provide a circuit breaker which performs neither reset operation not latch when a fixed contact point and a movable contact point are welded together.A circuit breaker includes: a trip arm 6 locked at a latch piece 7, which is deforma...  
JP2012033432
To provide a circuit breaker capable of preventing partial depletion of a movable contact by suppressing rotation of a movable contact element in electrode opening movement.In the circuit breaker, when the movable contact element 8 moves...  
JP2012033493
To provide a switching device which reduces the risk of welded contact elements in case of short circuits or other abnormal high currents.In a switching device 1, an actuator 10 is provided in a housing 50, the actuator 10 comprises a fi...  
JP2012023022
To provide a safety device of a circuit breaker which can visually confirm a position of a lock lever fixing the circuit breaker to a mounting plate simply and certainly even in a state where an electric wire is wired to a distribution b...  
JP2012003963
To provide a circuit breaker that increases driving force for an arc commutated to an arc commutation plate.A circuit breaker includes a first fixed contact 1, a second fixed contact 2, a movable contact 3 for bridging therebetween, a ch...  
JP2012003964
To easily execute a test trip without actually supplying an overcurrent nor using an optional voltage release device only by making simple alteration of a circuit breaker.A circuit breaker (for example, a circuit protector) constituted b...  
JP2011258385
To provide a lead conductor connection apparatus capable of surely and easily causing a simulation failure in an electrical facility.The present invention relates to a lead conductor connection apparatus including: a female screw having ...  
JP2011258558
To provide a circuit breaker including an arc-extinguishing unit capable of preventing debris generated due to arc from being spread in the circuit breaker and adhering the debris on grids as much as possible.A circuit breaker includes: ...  
JP2011259631
To provide a transfer adaptor of an automatic re-closing/cutoff device capable of discriminating whether it is a ground fault accident or short circuit accident from a business office without visiting the scene, with no change in configu...  
JP2011258560
To provide a tripping unit for easily adapting a circuit breaker to an AC or DC environment by just replacing the tripping unit.A multipolar circuit breaker 1 is provided with a tripping unit 2 configured to mechanically actuate the latc...  
JP2011253744
To provide a circuit breaker which can detect poor contact of a power supply side terminal and a load side terminal with one sensor circuit.A feeder line 7 and a detection line 8 are wired in parallel between a power supply side terminal...  
JP2011253646
To provide a test device, which a breaker can be attached to and detached from with ease.The test device 1 is for the performance test of a breaker 100 and capable of carrying out a performance test on different types of breakers 100. Th...  
JP2011249037
To provide a circuit breaker enabling, with a small force, a release lever to be operated for releasing a wire connected to a quick connection terminal.In a circuit breaker 1, an auxiliary member 10 is attached to a release lever 9 for r...  
JP2011238550
To provide an electromagnet device for immediately tripping a circuit breaker which can avoid delay in an immediate tripping operation even when the current set value for immediate tripping is set high, namely even when the gap width bet...  
JP2011228173
To provide an easy-to-manufacture circuit breaker with an arc-extinguishing device which can be installed even in a non-rectangular space according to the shape of the space.A contact part 3 is disposed in an arc-extinguishing chamber 5 ...  
JP2011222208
To provide a circuit breaker which is easily installed in a place with a small installation space and can effectively prevent malfunctions.A circuit breaker comprises: an insulating housing 2; a fixed contactor 6 provided in the housing ...  
JP2011222210
To provide a breaker capable of reporting an erroneous operation if an opening/closing mechanism part is transitioned to an open state when a protective shutdown detection circuit fails to report an alarm signal, and not reporting an err...  
JP2011223859
To provide a distribution panel plug capable of adjusting the height of a terminal plate electrically connected with a branch breaker, maintaining pressure of a contact piece connected to a bus bar strongly for a long time, and preventin...  
JP2011210629
To provide a terminal block that can respond to a change of a circuit when desired, without exchanging the entire terminal block.Connection bars 25, 25... for electrically connecting a current limiter and a trunk breaker 71 are held on a...  
JP2011210456
To provide an electronic circuit breaker having a reduced size while maintaining the size and performance of a current-detecting current transformer.The electronic circuit breaker includes a main circuit conductor in each phase connected...  
JP2011204689
To provide a movable contact of a circuit breaker, capable of minimizing the manufacturing cost thereof, and to provide a method of manufacturing a finger constituting the movable contact.The movable contact includes: a cage angularly ro...  
JP2011198586
To prevent a second movable contactor from being driven in a pole-closing direction by a magnetic field due to current flowing in a lead wire.A circuit breaker includes a first movable contactor 4, a second movable contactor 5, a lead wi...  
JP2011187415
To provide a circuit breaker capable of improving current-limiting breaking performance by reducing influence of electromagnetic force which decelerates opening speed of a second movable contactor between the second movable contactor and...  
JP2011187815
To solve the problem that variation in attracting force can not be suppressed by a method of bringing a movable armature into contact with a fixed armature like a conventional electromagnet device since magnetomotive force variance is ca...  
JP2011175926
To provide a circuit breaker with a thermal tripping device wherein the distance between a trip bar and a regulator can be adjusted in a short time.The thermal tripping device 42 includes a bimetal 43 having a guide groove 43a formed in ...  
JP2011171066
To provide a crimp-style terminal holder for allowing easier work for connecting a crimp-style terminal to a circuit breaker, and to provide a structure of mounting the crimp-style terminal holder on the circuit breaker.A locking protrus...  
JP2011171095
To provide a wire-type external operation device of a circuit breaker, capable of preventing misrecognition and error handle operation, without fail, by forcing the handle so as to move to the end positions of ON, OFF and to be kept unde...  

Matches 451 - 500 out of 3,653