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Patent Searching and Data


Matches 451 - 500 out of 3,687

Document Document Title
JP2012174686
To provide a circuit breaker with an arc-extinguishing part for extinguishing an arc generated when a movable contactor leaves a stationary contactor owing to an accident current.A circuit breaker 10 includes: a plurality of grids 20 whi...  
JP2012160482
To allow a high current-limiting and current interruption performance by suppressing a second movable contact member that has moved in repulsion to an open position in the process of current interruption operation from reversing to a clo...  
JP2012160362
To provide a power supply lock pin capable of preventing misoperation with a power supply switch when a part of operation prohibition tags are taken away among a plurality of operation prohibition tags.A power supply lock pin 3 is used w...  
JP2012156043
To provide a circuit breaker with a function of suppressing arc caused by disconnection of a wiring cable in a system, as a circuit breaker that is applied to a DC system such as a photovoltaic power generation system.In the circuit brea...  
JP2012156044
To improve current-limiting breaking performance of a circuit breaker by changing the current path, which runs through a stationary and movable contactor, to a loop-shape so that all currents flowing in the stationary and a movable conta...  
JP2012155955
To provide a circuit breaker structure which has excellent operating characteristics and which allows a movable contact piece to be housed in a small space, as a connecting conductor connected to one of terminal-side fixed conductors.A c...  
JP2012155954
To provide a circuit breaker structure which has excellent operating characteristics and which allows a movable contact piece to be housed in a small space, as a connecting conductor connected to one of terminal-side fixed conductors.In ...  
JP2012150962
To provide an SPD device with a circuit breaker which can enhance the suppression effect of a limit voltage for the surge voltage while facilitating the connection and decreasing the installation place, and in which the replacement work ...  
JP2012150979
To provide a circuit breaker which has high breaking performance without being enlarged.The circuit breaker comprises: a first contact part 3a connected between a first power-supply-side terminal 4a and a first load-side terminal 4b; a s...  
JP2012150986
To provide a circuit breaker which can be used in a high-voltage DC power distribution system, while obtaining sufficient breaking performance.An arc runner 38 extending toward a pair of front and rear arc-extinguishing devices 36 is pro...  
JP2012146472
To provide a switch with a lock mechanism which can eliminate the risk of losing a lock member and can be locked and unlocked easily, and which is also capable of locking the handle with certainty.At the side of a handle 4 which opens/cl...  
JP2012146648
To break contact between a movable contact arm and a stationary contact arm when a current path between the movable contact arm and the stationary contact arm has a current with not less than a predetermined amplitude.A circuit interrupt...  
JP2012146653
To provide a switching device in which an installation space can be reduced and an operation during energized is stable.The switching device includes: a first side intermediate conductive contact (111); a second side intermediate conduct...  
JP2012142278
To provide a thermal trip unit for a circuit breaker having a primary conductive path for conducting a load current.The thermal trip unit comprises a shape memory alloy (SMA) member adapted to change from a first shape to a second shape ...  
JP2012142283
To provide a movable contactor assembly of a current-limiting type circuit breaker which has a simple configuration and is excellent in current-limiting performance.The movable contactor assembly of a current-limiting type circuit breake...  
JP2012142282
To provide a bimetal assembly which holds a clearance between a bimetal and a heater.According to one embodiment of this invention, a bimetal assembly includes a heater 210 connecting with a movable contact and receiving power supply and...  
JP2012142096
To provide a circuit breaker in which a tripping time of appropriate range can be ensured when an overcurrent flows even if a thermal tripping mechanism using a bimetal is employed.In the circuit breaker, an external connection terminal ...  
JP2012138263
To provide a circuit breaker in which a determination can be made easily whether the circuit breaker is opened by a tripping device for confirming operation that is operated by an external signal, or opened by the intended circuit protec...  
JP2012138173
To provide a circuit breaker which can be used in a DC circuit with simple structure by reducing the number of wires to be connected.The circuit breaker comprises a movable contact 14 for opening/closing the main circuit, a movable conta...  
JP2012133956
To provide a circuit breaker which can restrict deformation of a display member to prevent erroneous display.The circuit breaker comprises a unit body 10, a contact mechanism 13, a handle 140 which includes a body part 40 having formed t...  
JP2012133955
To make trip display possible with a simple structure and also to prevent erroneous display.The circuit breaker comprises a unit body 10 having a window hole 11o formed therein, a contact mechanism 13, a handle 140 which rotates between ...  
JP2012129205
To improve operation dissymmetry of the other pole to the center pole of an operating mechanism of a multi-pole circuit breaker.A switchgear device 600 has a main unit Bp supporting an operating mechanism 8, and at least a first auxiliar...  
JP2012123926
To provide a multipole circuit breaker capable of locking an operation handle without providing additional members.The breaker comprises a coupling bar provided between a plurality of operation handles, integrally restraining the operati...  
JP2012123937
To provide a circuit breaker which allows a stationary contact to be attached to a base with good assembly workability.An insertion hole 13c is formed in a stationary contact 13, and a fixing piece 17b, which is inserted into the inserti...  
JP2012123961
To provide a circuit breaker which incorporates an isolation mechanism without forming a large hole in a frame which hinders downsizing of a mechanism part.The circuit breaker incorporates, inside a frame 6, a handle lever 7, a cradle 13...  
JP2012123970
To provide a structure which can attach a movable contactor easily to a cross bar.The attachment structure comprises a cross bar 51 in which a plurality of holding holes 51a are formed, a movable contactor 52 having a movable contact 53 ...  
JP2012119124
To provide a circuit breaker for use in a power circuit which is constructed to improve the ease of assembly in coupling a movable contact having a movable contact point to a connecting conductor.The circuit breaker includes: a mover ret...  
JP2012119111
To provide a mechanism section of a circuit breaker for wiring in which a cradle can be assembled easily to the mechanism section frame, and reliability of operation of the cradle is not impaired.The mechanism section of a circuit breake...  
JP2012119218
To obtain a movable contact device in which the coupling between a movable piece receiver and a movable contactor can be simplified, and the assurance of an electrical path between a conductor connection part of the movable piece receive...  
JP2012114026
To provide a circuit breaker by which blurring of the axial direction and the whole inclination of a trigger lever is reliably prevented and in which a tripping characteristic is stabilized.In a circuit breaker, a trigger lever that conv...  
JP2012113962
To provide a circuit breaker that can interrupt an arc more quickly or a circuit breaker that can interrupt a current even when an applied voltage is high.The circuit breaker comprises: a first terminal; a second terminal; a stationary c...  
JP2012109183
To provide a circuit breaker capable of reducing gap between a flange part of a handle and a handle arm and obtaining smooth movement of the handle even when molten material and dust of the outside intrude between the flange part of the ...  
JP2012109273
To solve the following problems that a conventional handle lock device has to use a plurality of members and make a metal fitting fixed by working a casing and that a handle lock device of a type made up of a single member comes off beca...  
JP2012109285
To provide a fitting structure to an equipment fitting plate, capable of fitting a circuit breaker of, for example, plug-in type, with no damage on wiring, and with no tool required at the time of dismounting.The present invention is rel...  
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...  

Matches 451 - 500 out of 3,687