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Patent Searching and Data


Matches 401 - 450 out of 1,717

Document Document Title
JP2011086434
To provide a ground leakage breaker that sets a detection sensitivity from low sensitivity to high sensitivity by a mechanical setting with a simple configuration and is forcibly set to operate speedily.When an extension slide switch 171...  
JP2011054525
To solve a problem wherein there is possibility that a plunger may unintentionally come out by separating attraction between a permanent magnet and the plunger when impact force or vibration force at a designated or more level is acted t...  
JP2011044248
To provide an electronic protective relay device capable of transmitting an accident occurrence information outside without time delay even during transmission of other pieces of information by inserting accident occurrence existence dec...  
JP2011040274
To provide a circuit breaker in which protection function of the breaker can be selectively switched over by a simple button operation so that it can be operated as a wiring breaker or an earth leakage breaker as required.The circuit bre...  
JP2011034714
To provide a circuit breaker of good assemblability with reduced number of assembling steps and components, for a lower cost, capable of preventing degradation in insulation between phases caused by sticking of arc gas after cutting off....  
JP2011027589
To provide a small-sized power measuring device measuring power highly accurately, and also to provide a breaker using the device.This power measuring device includes main circuit measuring parts 701, 702 for measuring a current and a vo...  
JP2011018460
To share a component between a voltage trip device and an undervoltage trip device.A trip bar 2 of a switching mechanism 300 in an air circuit breaker 100 is provided with a trip bar cut groove 2a and a trip bar extension 2b, wherein, in...  
JP2011018518
To provide a circuit breaker capable of preventing insulation breakdown for secondary winding of a transformer and connector components, and capable of easily showing its connection condition, even though an open state is happened among ...  
JP2011014385
To drive a circuit breaker at an early stage and protect a wiring passage from being heated, when a user inputs a power source again, while an electrical apparatus remains unimproved, as it is.In an electronic wiring circuit breaker, a C...  
JP2011015583
To provide a leakage detection method, a leakage detection device and an earth leakage breaker by which noise resistance performance thereof is improved and only a resistive component of a leakage current is accurately detected.A leakage...  
JP2010277769
To provide a leakage test switch unit which prevents an excessive load from being applied on a tact switch even when a test button is strongly pushed down, and achieves size and cost reduction.This ground fault interrupter includes a zer...  
JP2010272523
To provide a reliable abnormal current detecting circuit for a circuit breaker capable of quick abnormal current detection without delay time, with abnormal current detection characteristics not changing sensitively in accordance with te...  
JP2010272297
To provide a circuit breaker capable of reducing a cut-off current at cut-off and a passage energy caused by the cut-off current by processing an operation of overcurrent detecting function at high speed after starting a power supply wit...  
JP2010267510
To provide a circuit breaker for a low-tension power contract capable of activating an overcurrent detection circuit at a driving voltage obtained from a current transformer.The circuit breaker for low-tension power contract is provided ...  
JP2010257953
To securely break electric connection between poles of a DC power supply or an AC power supply all through an overcurrent range.This invention is applicable to a circuit breaker arranged in a power supply circuit that supplies power from...  
JP2010257657
To surely protect a wiring path from heating, by keeping changes of a line current as a history in the duration of an excess current to early actuate a cutoff mechanism.In an electronic molded-case circuit breaker, a CPU determines the e...  
JP2010257658
To provide an electronic circuit breaker which can make a circuit-breaking control circuit suitably continue its control after its circuit-breaking operation without taking any countermeasure such as enlargement of capacity of a power so...  
JP2010257581
To provide an energizing information measuring and displaying device of a circuit breaker improved so that an existing measuring unit and an existing display unit can be used even for a circuit breaker of a model having a large frame siz...  
JP2010251251
To provide an earth leakage breaker making readily visible a display in occurrence of earth leakage.An earth leakage detection block 2 includes an interlocking lever 18 driven by moving a mover 24 by an electromagnetic mechanism 17 in de...  
JP2010244793
To secure longer operating time and drive control stability of a tripping portion upon a long time delay tripping operation of a circuit breaker.The circuit breaker is so structured that an electric current level of an electric line is d...  
JP2010230457
To provide a split-type electric leak sensor and an electric leak detector which dispense with a connector for connecting coil wires and is able to maintain electrical contact reliability.The split-type electric leak sensor has coil wire...  
JP2010212106
To interrupt an electric passage between a drive circuit of a motor used for a pool floor elevating device and a power source by leakage of 5 mA in a leakage interrupter arranged in a pool for water depth adjustment and used for the pool...  
JP2010211948
To provide an earth leakage breaker with protection against neutral line open-phase for single-phase three lines, having delay-time characteristics with regard to leak detection without complicating a circuit even if a conventional abnor...  
JP2010176988
To provide a circuit breaker stopping supply of power to a determination circuit after breaking, even in case an operation power source of the determination circuit is taken further from a power source side than a power source side termi...  
JP2010177067
To achieve an earth leakage breaker with a testing circuit using a small sized testing current restricting resistor by reducing the consumed power amount at that resistor by reducing the voltage that is applied to the resistor and shorte...  
JP2010170902
To obtain a ground fault tester built in a leakage detection device for detecting a leaked current I0r resulted in insulation resistance to the ground, a leakage detection device having the ground fault tester, a circuit breaker, and a l...  
JP2010108735
To provide a switch, a separator, and an overvoltage protection device for surely passing a heavy current containing a high frequency component such as a lightning surge.This switch includes a first conduction part to conduct a current, ...  
JP2010103116
To provide a safety cover equipped with a means capable of measuring the terminal temperature of an electric apparatus.In this electric apparatus such as a breaker 10 to which a plurality of terminals 120 for input and output of a power ...  
JP2010093946
To obtain an electronic circuit breaker that sets the overcurrent trip characteristics easily by determining the transitory condition of load current in an overcurrent region without installing other measuring apparatus.An electronic cir...  
JP2010092623
To prevent secondary damage caused by runaway of a CPU by assuring fail-safe of the CPU in an electronic breaker.A CPU monitoring circuit 22 monitors the operation of the CPU 18 based on a periodical pulse output by the CPU 18. When the ...  
JP2010086791
To provide a wiring apparatus which prevents power usage of the whole building from becoming over-use and supplies power to a load.A receptacle 1 being a wiring apparatus is provided with a switching part 2 to make conductive or shut off...  
JP2010086715
To provide a tripping circuit capable of preventing a wrong tripping of a breaker inadvertently when a voltage of an inner power source changes.A trip coil 15 of a breaker 12, a first relay contact 19 of b-contact, and a second contact 2...  
JP2010086747
To provide an earth leakage detector capable of improving detecting accuracy of earth leakage as well as reducing a cost of the device as a whole and excellent in assembling easiness.A zero-phase current transformer 24 of the earth leaka...  
JP2010086793
To provide a wiring apparatus which does not require a time and effort by a user and a separate timer switch and can supply power to a load at an optional time.The wiring apparatus 1 is provided with a switching part 2 which is installed...  
JP2010080099
To safely activate a CPU by a voltage acquired from a primary side with insulation between the primary side and a secondary side secured, when a main contact point is open in an electronic breaker.A current flowing in a single-phase thre...  
JP2010078347
To accurately detect a line current by fixing the correlation position among a line conductor of a breaker, a magnetic core, and a magnetoelectric transducer and stabilizing output from the magnetoelectric transducer.A current detector 2...  
JP2010067514
To provide a circuit breaker unit free from wear damage and melting down in a contact point, excellent in current carrying capability, and highly reliable for a long time, by shortening a time required to start breaking out a circuit bre...  
JP2010067607
To eliminate troublesome tripping caused by an electronic trip unit during low power operation.This electronic trip unit 20 includes a processing unit 22 and a comparator circuit 24. The processing unit 22 receives an input voltage VCC, ...  
JP2010063247
To provide a working state monitoring controller and a circuit breaker which stop power supply to an electric circuit automatically when a decision is made that a construction work using an electrical device for work has ended and no wor...  
JP2010061928
To provide a circuit breaker unit having a function to automatically stop power supply when an on-site work is completed and work is not carried out.A circuit breaking block 110 which includes a current detection means 111 to detect curr...  
JP2010061929
To provide a circuit breaker for reducing environmental load and assuring electrical safety by automatically stopping power supply to an electrical path in case that it is not necessary in the electrical path used in construction sites o...  
JP2010049988
To provide an uniterruptive testing device capable of carrying out an overcurrent circuit breaker functional test for a wiring circuit breaker while the wiring circuit breaker is connected with a main circuit.The uninterruptive testing d...  
JP2010044946
To provide a circuit breaker capable of confirming the date of inspection.A branch breaker 1 includes: a casing 1a housing a switch part 12 by inserting it between a primary side terminal part 10 and a secondary side terminal part 11; an...  
JP2010045026
To provide an apparatus for performing series and parallel arc fault current interruption (AFCI).The apparatus includes a resistive element 10 configured to sense a load from which a current signal is generated, a first detection unit 30...  
JP2010044947
To provide a circuit breaker and a distribution board, which can accurately measure the current even if an unusual condition occurs in a power system.A branch breaker 1 is a circuit breaker comprising: a casing 1a having a primary side t...  
JP2010040326
To provide a test circuit of a ground fault interrupter in which the ripple rate of an imitation leakage current flowed in a test circuit is improved, by skillfully utilizing a surge suppressor connected to an input side power supply lin...  
JP2010033855
To reduce the number of components and simplify the structure compared with a prior art, and to improve assembly workability of a relay.The leakage relay includes a connecting part 1 to connect a power supply and a load, a detection part...  
JP2010021081
To provide an overcurrent circuit breaker and an interruption method of overcurrent, with sufficient consideration of operating characteristics depending on heat accumulation as being so-called an electronic type, and can surely carry ou...  
JP2010015745
To reliably interrupt leakage even if a leakage current has a distorted waveform in a wiring device for detecting the leakage current of an electrical path connecting commercial power supply and a load to interrupt the electrical path.A ...  
JP2010015872
To allow a user of an electronic circuit breaker to recognize a circuit failure at a processing unit for processing electrical connection information, when the processing unit is tripped because of the failure and to prevent the circuit ...  

Matches 401 - 450 out of 1,717