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Patent Searching and Data


Matches 451 - 500 out of 3,713

Document Document Title
JP2012243666A
To provide a circuit breaker capable of preventing overheat of a plurality of terminals on a power supply side and a load side.In a power supply side terminal unit 2, detection circuits 24 for detecting contact failure of terminal compon...  
JP2012243521A
To provide a circuit breaker capable of reducing costs and a size by reducing the number of components and providing components for a simple operation.A holding mechanism 28 provided in a holder 18 comprises: a movable side engagement pa...  
JP2012243659A
To provide a circuit breaker with a sufficient performance of breaking a high-voltage DC circuit while allowing the downsizing of the device.There are a pair of permanent magnets 14a and 14b and a permanent magnet holder 15 disposed betw...  
JP2012234711A
To provide a fitting structure capable of preventing a fitting lock between an internal device and a fitting plate from released for easy detachment of the internal device when fitting a power distribution panel on a construction materia...  
JP2012234652A
To obtain an electronic circuit breaker for protecting a lead wire while keeping flexibility of the lead wire.The electric circuit breaker comprises: a flexibility protective plate 10 held near a lead-out port 9 of plural lead wires 8 of...  
JP2012234645A
To provide a circuit breaker in which, when a short circuit current of a main circuit is detected to actuate an electron magnetic tripping device, a movable contact which is detached from a fixed contact prior to a tripping operation of ...  
JP2012230908A
To provide a circuit breaker capable of selecting a thermal electromagnetic relay or a full electromagnetic relay as a tripping device.As tripping means for actuating an opening/closing mechanism part so that a movable contact point come...  
JP2012227027A
To provide a terminal structure of a circuit breaker having a selection type terminal device, in which a measurement work of a power supply voltage for a plurality of circuit breakers can be easily performed from the front face side of t...  
JP2012226971A
To provide a terminal structure of a circuit breaker having a selection type terminal device, in which a connection state of bus bars to a plurality of circuit breakers and voltages supplied from the bus bars to the circuit breakers can ...  
JP2012221701A
To provide a circuit breaker capable of efficiently extinguishing arc in a DC circuit or a low-current region.A circuit breaker comprises: a movable contact piece for opening and closing a main circuit; a movable contact joined to the mo...  
JP2012221759A
To provide a circuit breaker in which commutation of an arc is facilitated and cutoff performance can be enhanced.Arc runners 39a and 39b are composed of a high resistance member having a higher volume resistivity than those of fixed con...  
JP2012221868A
To provide a circuit breaker and an adaptor for the circuit breaker which are not required to be installed at each of a plurality of bus bars constituting a bus bar group, which can be connected to an arbitrary bus bar in the bus bar gro...  
JP2012216470A
To provide an arc-extinguishing insulating material molding that is capable of generating sufficient pyrolysis gas for extinguishing an arc generated upon circuit interruption, suppresses an amount of generated gas to prevent a housing f...  
JP2012216378A
To provide an abnormal overheat detection structure capable of adding a function for detecting abnormal overheat of an electric wire connection terminal with ease by simple modification to a normal circuit breaker, and of improving an in...  
JP2012216494A
To provide an arc-extinguishing insulating material molding that is capable of generating sufficient pyrolysis gas for extinguishing an arc generated upon circuit interruption, suppresses an amount of generated gas to prevent a housing f...  
JP2012199000A
To provide a multipole circuit breaker which can be miniaturized and can have high performance without deteriorating an arc-extinguishing ability of an arc-extinguishing device.An arc-extinguishing device 19 comprises a pair of side plat...  
JP2012195185A
To improve current-limiting cut-off performance by constraining and holding a movable contact, which is opened as it received an electromagnetic repulsive force generated by a short-circuit current, in an open electrode position in linka...  
JP2012195184A
To provide a circuit breaker that is improved so that, while high conductivity of a movable contact is being maintained, the movable contact, which has been moved to an open electrode position due to an electromagnetic repulsive force be...  
JP2012186182A
To improve a structure so as not to accidentally switch a handle position even when an object or a human body, which moves into from an open surface of a guard fence, contacts with a grip of an operation handle and enhance the guard func...  
JP2012181924A
To provide a circuit breaker in which an arc current being generated between contacts can be increased without changing the structure of a current interruption part significantly.The circuit breaker comprises a stationary contactor 1, a ...  
JP2012181923A
To provide a terminal device of a circuit breaker for which improvement has been made on a circuit protector without making changes to a conventional main body case so that the workability in wiring is improved by skillfully utilizing a ...  
JP2012174688A
To provide a circuit breaker which is automatically turned off once an attachment device is fastened even when the circuit breaker is not turned off during the fastening of the attachment device.The circuit breaker, having a main case 10...  
JP2012174686A
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...  
JP2012160482A
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...  
JP2012160362A
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...  
JP2012156043A
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...  
JP2012156044A
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...  
JP2012155955A
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...  
JP2012155954A
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 ...  
JP2012150962A
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 ...  
JP2012150979A
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...  
JP2012150986A
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...  
JP2012146472A
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...  
JP2012146648A
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...  
JP2012146653A
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...  
JP2012142278A
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 ...  
JP2012142283A
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...  
JP2012142282A
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...  
JP2012142096A
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 ...  
JP2012138263A
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...  
JP2012138173A
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...  
JP2012133956A
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...  
JP2012133955A
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 ...  
JP2012129205A
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...  
JP2012123926A
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...  
JP2012123937A
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...  
JP2012123961A
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...  
JP2012123970A
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 ...  
JP2012119124A
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...  
JP2012119111A
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...  

Matches 451 - 500 out of 3,713