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JP05074320 |
PURPOSE: To reduce an exciting current so as to miniaturize an actuator by turning a yoke serving as an outer rotor with respect to an armature serving as a stator, to be positioned at either of two positions. CONSTITUTION: An armature 1...
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JP05028900 |
PURPOSE: To form a small-sized circuit breaker free from influence of the ambient temp. by permitting the magnetic field of each coil to strengthen when over-current flows in the applicable circuit, and allowing a pair of opposed magneti...
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JP04190535 |
PURPOSE: To realize a circuit breaker with high breaking capacitance for which electromagnetic repulsion force is utilized in maximum, by making the reaction of a contact spring against electromagnetic repulsion force smaller in the proc...
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JP04098729 |
PURPOSE: To simplify and miniaturize structure by returning a lever in a reset state, and pushing a plunger into a coil bobbin by the use of the lever. CONSTITUTION: In the case of a normal source voltage, neither a link 209 nor a lever ...
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JP04082122 |
PURPOSE: To prevent the scattering of a melted material to a rotational fulcrum of a moving contact board following breaking by pushing up a rotational fulcrum pin of the moving contact board by a pressure piece, through the rotation of ...
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JP04071133 |
PURPOSE: To sufficiently secure a passage for air so as to effectively cool heat generated in a conductor, contacts or the like by communicating, to an arc extinguishing chamber, a small space surrounded by the front surface and bottom s...
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JP04019938 |
PURPOSE: To further ensure connection by electrically connecting a movable contact and a connection conductor, fixed to a case, by sliding contact. CONSTITUTION: A movable contact 32 is soldered to the end of a movable contact 31 made of...
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JP04014730 |
PURPOSE: To protect a semiconductor switching device from large current by short-circuiting a bypass circuit to a main circuit by closing a flow-changing switch simultaneously with shutting operation. CONSTITUTION: When large current run...
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JP03280321 |
PURPOSE: To standardize a coil to be used by changing permeability of an iron core through attaching or detaching a part of the iron core to and from a breaker, so as to change inductance accordingly. CONSTITUTION: A coil 6 is wound arou...
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JP03203142 |
PURPOSE: To reduce the opening and closing distance of a second movable contact point in a double-break circuit breaker by providing a U-shaped conductor consisting of a high resistance material to be fixed to a second fixed contact poin...
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JP03190032 |
PURPOSE: To reduce damage of a contact and an arc-extinguishing chamber by making directions of current flowing in conductors of two pairs of movable contacts and fixed contacts opposite to each other and simultaneously separating the tw...
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JP03190030 |
PURPOSE: To enable adjustment of a size of a through hole to eliminate need of a spacer by providing stepped parts for allowing the through hole of a lid of a breaker to be increased in size according to a terminal member, and forming a ...
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JP03163723 |
PURPOSE: To prevent the excessive rotation of a moving contact and surely return it to the original state by forming a hooking section on an end section brought into contact with the projection of the moving contact of a torsion coil spr...
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JP03156825 |
PURPOSE: To reduce the length so as to aim at compactness by intersecting an operating shaft and an operating plate in such a manner as to move mutually freely, and providing an engaging piece, which abuts against the operating plate, on...
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JP03156824 |
PURPOSE: To prevent an insulative cover from falling off by holding the insulative cover between fixture surfaces and terminal tables with engaging portions engaged with engaged portions. CONSTITUTION: A control circuit terminal part 21 ...
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JP03129627 |
PURPOSE: To reduce the cost of a breaker by making a current limiting device into a unit and connecting one device or a plurality of devices in series to the end of a breaker casing. CONSTITUTION: When a current limiting casing 1B and a ...
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JP03102731 |
PURPOSE: To make a board thin and compact and reduce the spark discharge by cohering the end surface of a breaker cage member and the end surface of a current-limiter cage member, and locating both the two side by side, and connecting re...
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JP03089417 |
PURPOSE: To surely open or close contacts by forming the rotation stop section of a movable contact plate on a cross bar so that the other end of a contact spring can move only the side exciting the movable contact plate in the closing d...
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JP03077228 |
PURPOSE: To terminate service life with a circuit kept in an open state by providing a resistor having higher electric resistance of a snap action bimetal on a position of the snap action bimetal interconnected with a bimetal supporting ...
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JP03034234 |
PURPOSE: To increase opening and closing speed by rotating a limit current contact base by use of an electromagnetic reaction generated on both sides of its rotating center as a couple, and connecting the other end of the end part facing...
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JP03011518 |
PURPOSE: To maintain the effect of a contact spring almost equal to that when a fixed contact is in a closed state, even with opening movement of the fixed contact, to obtain a big opening distance by setting the angle of inclination of ...
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JP02312132 |
PURPOSE: To effectively protect a load having a low over-current resistance and simplify a release the load by providing a plurality of electromagnetic devices respectively disposed in a plurality of cable ways and actuated when each cur...
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JP02285922 |
PURPOSE: To sufficiently protect the device against a short circuit by a circuit breaker by simple constitution by operating the operating section of an electromagnetic means, opening-working the normally closed contact of a switch and m...
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JP02285923 |
PURPOSE: To sufficiently protect the device against a short circuit by a circuit breaker by simple constitution by operating an electromagnet, operating a changeover switch and bypassing an object to be protected when currents higher tha...
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JP02285921 |
PURPOSE: To protect a short circuit sufficiently by a circuit breaker by simple constitution by providing an electromagnet and a switch, connecting the switch in parallel with an object to be protected and turning the switch ON in respon...
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JP02266270 |
PURPOSE: To rapidly interrupt an overvoltage impressed to an electrical circuit by providing an insulated moving body between a conductive rail furnished with a switching mechanism and another conductive rail, and applying a strong magne...
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JP02256111 |
PURPOSE: To suppress increase of thermal energy and carry out circuit breaking surely even in the case of narrow space of a contacting apparatus by extending an arc current generated by an opening operation of a movable contacting plate ...
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JP02256112 |
PURPOSE: To suppress consumption of a movable contact by narrowing the space between a movable contact and an electrode plate and transmitting and suppressing temperature increase, which becomes high when arc current generated in the mov...
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JP02255224 |
PURPOSE: To improve the binding structure of a metallic base and a metallic accessory plate by pressurizing and deforming the through hole edge of a base to firmly stick a shaft body. CONSTITUTION: A projection 27 of a metallic base 25 i...
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JP02216728 |
PURPOSE: To eliminate any biased contact of stationary and movable contacts so as to prevent any defective conduction when the contacts are closed in contact with each other by positioning a torsion spring locked to another movable conta...
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JP02181336 |
PURPOSE: To improve a current limiting characteristic by utilizing gas pressure of arc gas at the time of limiting current interruption as dissociation force of a movable contactor. CONSTITUTION: A fixed contactor 2 and a movable contact...
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JP02106842 |
PURPOSE: To enable the protection of a current limiting mechanism from fused metal particles and high temperature gas scattered at the time of a large current breaking by enclosing a rotating part except a part parallel to the fixed cont...
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JP02068831 |
PURPOSE: To make it possible to obtain an excellent current limiting characteristic even with a compact circuit breaker by forming a guide part possessing a bend part on a movable contact guide which gives a spring force to the guide pin...
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JP02051819 |
PURPOSE: To reduce the arc current and perform the reliable cutoff operation by providing an instant separation core and an interlocked repulsion shaft. CONSTITUTION: An instant core 20'a and a moving iron 19' are provided below an overc...
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JP01235120 |
PURPOSE: To suppress the occurrence of the surge voltage and extent the life by providing a superconducting member on an excitation section between terminals installed on both sides and forming two or more portions with different cross s...
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JP01220324 |
PURPOSE: To prevent a restrike or the welding of both contacts by providing a cushioning material on the inner wall of a guide groove end part to which a pin abuts when a movable contact is separated from a fixed contact with only a firs...
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JP01220325 |
PURPOSE: To stabilize a performance characteristic by making the inner surface of a long groove to the surface in which the frictional force of the contact part between a pin and the long groove is lower than that of the contact part bet...
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JP01220326 |
PURPOSE: To stabilize an action characteristic by making the frictional force of the engaging part of a pin and a spring larger than the sum of the frictional force between the pin and a long groove and that between the pin and a guide g...
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JP01206532 |
PURPOSE: To prevent the undesired cable way cutoff caused by the rush current under the transient condition of a load circuit by providing the magnetic suction force of a permanent magnet and two coils generating the magnetic flux resist...
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JP01067837 |
PURPOSE: To prevent the reduction of the opening speed of movable contact shoes and smoothly perform the return to the initial state after the cutoff by providing a guide section guiding a movable member to be moved near the rotary fulcr...
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JP64002236 |
PURPOSE: To obtain excellent current-limiting characteristic by arranging such that a spring force of a contact spring adds to an electromagnetic repulsive force produced between fixed and movable contact pieces once a guide pin slides a...
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JP63308820 |
PURPOSE: To enable current limiting action starting current to be decided without connecting with shock at the time of making contact by bifurcating a movable contact so as to release the engagement by the magnetic suction force caused b...
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JP57151865 |
PURPOSE: To obtain the abnormal current detecting device which is quickly operated at the time of short circuit a compact constitution, by amplifying and applying the current detected through a secondary winding of a ring shaped magnetic...
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JP57036817 |
PURPOSE: To improve the stability of the attraction of a yoke to an armature of an electromagnet device and the quality of the device by forming a plurality of recessed grooves at the attracting part of the armature to the yoke forming a...
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JP52029950 |
PURPOSE: A current limiting apparatus capable of improving limiting performance with no increase in heating and voltage drop at a rated current.
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JP52008454 |
PURPOSE: A current limit device having a short timing function suitable for selective breaking, connected in cascade with a breaker.
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