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Patent Searching and Data


Matches 601 - 650 out of 4,534

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...  
JP2012243642A
To provide an earth leakage breaker for performing breaking operation by surely detecting leakage if a leakage current having a predetermined magnitude is produced, even if the leakage current is a pulsating leakage current produced by s...  
JP2012238566A
To provide a power supply circuit in which compaction and power saving can be attained by reducing power consumption during unsteady time thereby limiting the maximum power supply capacity, and to provide an earth leakage circuit breaker...  
JP5091766B2  
JP5091800B2  
JP5091799B2  
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...  
JP5081466B2  
JP5081467B2  
JP5073472B2  
JP5070949B2  
JP5072086B2  
JP2012209063A
To provide a plug-in connection device for preventing an effect of an accident in a very simple configuration, which does not affect other electric lines even if a ground fault occurs, without changing electric installation in the conven...  
JP5055387B2  
JP2012202705A
To provide a leak detection device capable of performing a leak block and a leak display at the same time with a simple and low-cost constitution.The present leak detection device comprises: a zero-phase current transformer 10 through wh...  
JP2012204007A
To compulsorily open a main contact according to a reason such that the main contact is compulsorily opened by displaying the reason with a simple constitution.An earth ground breaker for opening a main circuit including an alternating-c...  
JP2012199196A
To provide a blocking device with small variation, a small temperature characteristic, good electric leakage detection accuracy, and a small malfunction.The blocking device according to the present invention comprises an electric leakage...  
JP5052405B2  
JP5042895B2  
JP3178681U  
JP5030733B2  
JP5026853B2  
JP5026852B2  
JP5030894B2  
JP2012178355A
To provide a circuit breaker unit capable of, even if a leakage current component out of leakage current flowing through alternate current electric paths, facilities or the like increases, preventing unnecessary movement and adequately p...  
JP5021789B2  
JP5021420B2  
JP5021399B2  
JP5021439B2  
JP5014717B2  
JP5014716B2  
JP5014699B2  
JP5015320B2  
JP5006123B2  
JP4998119B2  
JP2012150110A
To provide a circuit protection system.A circuit protection system (100) includes: a first current detection device (102) operating so as to measure a current of a first phase (151) of a voltage source; a second current detection device ...  
JP2012152071A
To solve the following problem: in implementing a self diagnosis for a switching device forming an earth leakage breaker, when two contact points for both-end cutting a power line are operated at the same time, welding failure on only on...  
JP4994820B2  
JP4990588B2  
JP4990589B2  
JP2012141301A
To prevent a false indication (nuisance tripping) due to influence of stray magnetic fields in a circuit breaker.A current measuring system (10) for measuring a current through a conductor (46) is described. The system includes a first s...  
JP2012142106A
To provide a reversely-connectable earth leakage circuit breaker which has no malfunction and can be easily supplied in low cost for a photovoltaic power generation system or the like.In an earth leakage circuit breaker having a main cir...  
JP4981550B2  
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...  
JP4977003B2  
JP4977002B2  
JP2012134002A
To suppress a burnout accident on an electrical path with a switch connected by protecting the switch and devices on the electrical path with the switch connected against arcing and overheating.The switch having a power supply side termi...  
JP2012134003A
To prevent a burnout accident on an electrical path with a switch connected by protecting the switch and devices on the electrical path with the switch connected against arcing and overheating.The switch having a power supply side termin...  
JP2012134152A
To provide a trip device of a breaker capable of implementing both of undervoltage trip and remote trip with one circuit.The trip device includes: a rectification section for converting an AC voltage applied to the breaker into a DC volt...  
JP4972998B2  

Matches 601 - 650 out of 4,534