JP4293099B2 - Remote control circuit breaker - Google Patents

Description

  The present invention relates to a remote-control circuit breaker that can be turned on and off by remote operation.

  Conventionally, there is one in which a main movable contact driven by a handle and a relay movable contact driven by an electromagnet device are arranged to face each other (see Patent Document 1). In this structure, the main movable contact and the relay movable contact are in direct contact. Therefore, even if the main movable contact and the relay movable contact are consumed by the first short-circuit current, the contact pressure of a certain level is maintained so that the main movable contact and the relay movable contact are not welded by the second short-circuit current. is required. For this reason, an electromagnet device having a large driving force is required, and the electromagnet device is enlarged.

  Moreover, when driving two-pole relay movable contacts at the same time, two such electromagnet devices are required, or a larger electromagnet device must be used, resulting in an increase in the size of the body. There is.

In the above conventional example, if the main contact device and the relay contact device are separated (see, for example, Patent Document 2), the contact pressure on the relay contact device side can be reduced. Even when the contacts are driven simultaneously, it is not necessary to use a large electromagnet device. However, in Patent Document 2, since the movable iron core of the electromagnet device operates in the vertical direction of the body, and the electromagnet device and the relay contact device are arranged above and below the body, the vertical direction of the body is determined. There is a possibility that the height dimension of becomes large.
JP-A-5-290711 Japanese Utility Model Sho 60-163658

  Accordingly, an object of the present invention is to provide a remote control type circuit breaker that can suppress an increase in the size of the vessel as much as possible and can be easily made into a two-pole type with a width of one pole. .

The remote control type circuit breaker according to the present invention is provided between an input / output terminal having a plug-in terminal at one end and an input / output terminal having a fast connection terminal at the other end, and the input / output terminal. A main contact device having a main movable contact and a main fixed contact interposed in an electric circuit, and an operation of opening and closing a handle disposed on the upper surface of the container body causes the main movable contact to be brought into and out of contact with the main fixed contact. An open / close / trip mechanism for forcibly opening the main movable contact from the main fixed contact when an abnormal current flows through the relay, and a relay movable contact and relay fixed interposed in series with the main contact device in the electric path between the input / output terminals Remote control type circuit breaker comprising a relay contact device having a contact and an electromagnet device having a movable iron core for moving the relay movable contact to and from the relay fixed contact by an external signal In,
The electromagnet device has an operation direction of the movable iron core that connects the both ends of the container body, the plug-in terminal is in contact with a vertical direction of the container body with respect to a bar, and the main contact point In the apparatus, the operation direction of the main movable contact is the vertical direction of the container,
Any two of the electromagnet device, the main contact device, and the relay contact device are arranged in the vertical direction of the container body, and the other one is configured to connect the both ends of the container body to one or both of the two. It is arranged so that it may line up in the direction to connect.

  In the above configuration, the main contact device and the electromagnet device are arranged side by side in the vertical direction of the body, and an insulating partition is provided between the main contact device and the electromagnet device.

  In the above configuration, the main contact device and the relay contact device are respectively disposed such that the main fixed contact and the relay fixed contact are closer to the electromagnet device side than the main movable contact and the relay movable contact. Yes.

  In the above configuration, the main fixed contact and the relay fixed contact are connected.

  In the above-described configuration, the main fixed contact and the relay fixed contact are fixed to one conductive plate.

  According to the remote control type circuit breaker of the present invention, the main contact device and the relay contact device are separated, the main movable contact is contacted and separated from the main fixed contact, and the relay movable contact is contacted and separated from the relay fixed contact. Since the contact pressure on the contact device side can be reduced, it is not necessary to use a large electromagnet device. For this reason, it becomes easy to make a two-pole type with a width dimension of one pole. In particular, the movable iron core moves in the direction of both ends of the container, and the electromagnet device and at most one contact device are positioned in the vertical direction of the container, and the vertical size of the container can be reduced. For this reason, it can suppress that a vessel becomes large as much as possible.

  When the main contact device and the electromagnet device are arranged side by side in the vertical direction of the body and an insulating partition is provided between the main contact device and the electromagnet device, the relay contact device driven by the electromagnet device becomes an electromagnet device. The relay contact device can be easily driven by the electromagnet device. In addition, an arc generated when forcibly opening due to an overcurrent or a short-circuit current does not enter the electromagnet device, and the drive of the relay contact device is hardly affected.

  When the main contact device and the relay contact device are respectively disposed such that the main fixed contact and the relay fixed contact are closer to the electromagnet device side than the main movable contact and the relay movable contact, the electromagnet device Since the side is the fixed contact side, each contact device can be easily placed close to the electromagnet device. If there is an electromagnet device on the movable contact side, it will require space for movement, and the body will be large and difficult to design.

  When the main fixed contact and the relay fixed contact are connected, the main contact device and the relay contact device are connected in series with each other, so that the electric circuit between the main contact device and the relay contact device moves and breaks. There is nothing, and connection reliability is good.

  Since the main fixed contact and the relay fixed contact are fixed to one conductive plate, there is no need to connect each fixed contact with a lead wire, and the number of connection points between the fixed contacts can be reduced. The point connection reliability is further improved, and the temperature rise due to the connection failure can be reduced.

  A bipolar control circuit breaker according to an embodiment of the present invention will be described with reference to FIGS. The container 1 includes a case 2 whose side is open, a side cover 3 that closes the opening, an input side partition member 4 and an output side partition member 5. The input side partition member 4 and the output side partition member 5 are interposed between the case 2 and the side cover 3 at both ends of the container body 1 and connect the width direction of the container body 1, that is, both side surfaces of the container body 1. Partition the middle of the direction.

  The electric circuit in the container 1 is the input side terminal 6, the flexible wire conductor 11, the abnormal current detecting device 7, the flexible wire conductor 12, the main contact device 8, the relay contact device 9, and the flexible wire conductor 13 for each pole. And an output side terminal 10. Each electric circuit extends in a direction connecting both ends of the container 1, and is disposed in a space partitioned by the partition members 4 and 5 so as to be arranged in parallel in the width direction of the container 1.

  The opening / closing / trip mechanism 30 and the electromagnet device 31 are shared by the poles, and are arranged between the central portion in the direction connecting both ends of the container body 1, that is, between the partition members 4, 5. The opening / closing / trip mechanism 30 is disposed above the insulating partition 32 provided in the case 2, and the electromagnet device 31 is disposed below the insulating partition 32.

  The opening / closing / tripping mechanism 30 mainly includes a handle 14, a link 15, a lever 16, a movable frame 17, an opening spring 19, and a tripping member 20. The handle 14 has a shaft 14 a rotatably supported between the case 2 and the side cover 3 of the container 1, and a part of the handle 14 protrudes from an opening 18 formed on the upper surface of the case 2. One end of the reverse link 15 is connected to the handle 14, and the other end is connected to an intermediate portion that is a fulcrum of the lever 16. One end of the lever 16 is locked to the tripping member 20, and the other end is locked to the movable frame 17. The movable frame 17 has a shaft 17 a that is pivotally supported between the case 2 and the side cover 3. The opening spring 19 is compressed and interposed between the movable frame 17 and a spring receiver 21 provided in the case 2, and urges the movable frame 17 clockwise in FIG. The tripping member 20 is urged by the return spring 23 in a direction (counterclockwise in FIG. 1) in which the shaft 20a is pivotally supported between the case 2 and the side cover 3 and the locking portion 22 is locked to one end of the lever 16. ing. The main movable contact 8 a of the main contact device 8 has a base end inserted through the recess 17 b of the movable frame 17 and is held in the recess 17 b by a contact pressure applying spring 34. And the flexible wire conductor 12 and the base end part of the main movable contact 8a of the main contact device 8 are connected.

  The ON / OFF state of the open / close / trip mechanism 30 is the state shown in FIG. 1, and the open frame spring 19 is compressed by rotating the movable frame 17 by the handle 14 while the one end of the lever 16 is locked to the locking portion 22. The handle 14 is locked to the edge of the opening 18 by the urging force. The off state is a state in which the handle 14 in the on state is operated to the opposite side as shown in FIG. 4, and the reversing link 15 is reversed as the handle 14 rotates and the movable frame 17 is moved by the biasing force of the opening spring 19. While rotating clockwise, the movable contact 8a is turned off, and the lever 16 is pushed up. The on operation from the off state is the opposite operation. In the trip state, the tripping member 20 is rotated clockwise against the return spring 23 by the operation of the abnormal current detection device 7, and the lever 16 is pulled so that the locking portion 22 is detached from the lever 16. remove. Therefore, the movable frame 17 is rotated clockwise by the biasing force of the opening spring 19 to push up the lever 16, and the movable contact 8a is turned off, and the handle 14 biases the handle 14 in the off direction (see FIG. It turns to a neutral posture between the ON position. In addition, when the handle 14 is operated in the off direction from the neutral posture state, it can be turned off.

  The electromagnet device 31 uses a latch-type polarized electromagnet, and is arranged horizontally in the body 1 so that the operation direction of the plunger 36 serving as a movable iron core is a direction connecting both ends of the body 1. As shown, the width direction connecting both sides of the container 1 occupies the entire space between the inner surface of the case 2 and the inner side of the side cover 3. The configuration of the electromagnet device 31 is shown in FIG. A plunger 36 is inserted through the center of the coil frame 37, and a coil 38 is wound around the outer periphery of the coil frame 37. A pair of inner yokes 39 to be fixed iron cores are arranged on both upper and lower sides of the coil 38, and a pair of substantially U-shaped outer yokes 40 to be fixed iron cores are arranged on the outer sides of the coils 38. A permanent magnet 41 for making the both yokes different in polarity is interposed therebetween, and an armature plate 42 is provided between both end portions of the outer yoke 40 and the inner yoke 39 at both end portions of the plunger 36. A relay movable frame 44 of the relay contact device 9 is connected to one end of the plunger 36 by a shaft 36a. A shaft 44 a of the relay movable frame 44 is pivotally supported between the case 2 and the side cover 3. The relay movable frame 44 has recesses 44b on both sides, and the relay movable contact 9a is inserted into the recess 44b, and the relay movable contact 9a is held by a contact pressure applying spring 45. The relay movable contact 9 a and the output side terminal 10 are connected by a flexible wire conductor 13. A printed circuit board 49 having a switch 47 opposed to the plunger 36 via a relay movable frame 44 is disposed at one end of the plunger 36, and a printed circuit board 50 having a switch 48 is disposed opposed to the other end. The relay movable frame 44 is rotated at one end of the plunger 36, the switch 47 is pressed by the switch pressing portion 44 c of the relay movable frame 44, and the switch 48 is directly pressed by the other end of the plunger 36. Both switches 47 and 48 are configured so that the current is stopped by pressing the switches 47 and 48 at the end of the plunger 36. A pair of diodes and surge absorbing elements for rectifying alternating current and energizing the coil 38 are mounted on the printed circuit boards 49 and 50, and the printed circuit boards 49 and 50 and the coil 38 are wired by lead wires 52.

  FIG. 22 shows an on state in which the plunger 36 is turned on, and one end of the plunger 36 is latched by the permanent magnet 41 so as to protrude to the outside. FIG. 23 shows the plunger 36 in the off state. When the coil 38 is energized in one direction, the plunger 36 is moved in the opposite direction and is latched by the permanent magnet 41. When the coil 38 is energized in the direction opposite to the above, it turns from the off state to the on state.

  FIG. 24 is a power supply circuit diagram of the coil 38. The pair of antiparallel diodes D1 and D2 are for rectification, and switches 47 and 48 are connected to one end thereof as shown in the figure, and the remote switch SW is connected to the other end. Z is a surge absorbing element. FIG. 5A shows the ON operation of the plunger 36 from the OFF state. That is, when the remote switch SW is operated so that the diode D1 side is turned on and the diode D2 side is turned off, the normally closed contact NC of the switch 47 is closed, so that half-wave rectification flows through the coil 38 as indicated by an arrow. As a result, the plunger 36 is driven to leave the state where the switch 48 is pressed, then the switches 47 and 48 are both released, and then the switch 47 is pressed. When the switch 48 is released from the pressed state, the contact is switched from the normally open contact NO to the normally closed contact NC. When the switch 47 is pressed, the normally closed contact NC is opened and the normally open contact NO is closed, whereby the coil 38 is deenergized and the state shown in FIG. FIG. 2B is a waveform diagram of current flowing through the coil 38. FIG. FIG. 3C shows the off operation of the plunger 36 from the on state. That is, when the remote switch SW is operated in the opposite direction so that the diode D2 side is turned on and the diode D1 side is turned off, the normally open contact NO is closed for the switch 47 and the normally closed contact NC is closed for the switch 48, as indicated by the arrow. The half-wave rectification flows through the coil 38 in the opposite direction to the above. A current flows through each of the switches 47 and 48 by half. As a result, the plunger 36 is driven to the off side, leaving the state where the switch 47 is pressed, and then the switches 47 and 48 are both released, and then the switch 48 is pressed. When the switch 47 is released from the pressed state, the contact is switched from the normally open contact NO to the normally closed contact NC. When the switch 48 is pressed, the normally closed contact NC is opened and the normally open contact NO is closed, whereby the coil 38 is deenergized and the state shown in FIG. FIG. 4D shows a current waveform diagram of the coil 38.

  Note that a display lever 54 extends toward the upper end of the case 2 in the relay movable frame 44. A display opening 55 is formed at the upper end portion of the case 2 adjacent to the opening 18 for the handle, and the shaft portion 56a of the display body 56 for displaying the state of the relay is formed inside the case 2 and the output side partition member 5. It is pivoted between. An engaging portion 56b is formed in the display body 56 in a notch, and the upper end portion of the display lever 54 is engaged with the engaging portion 56b. As the relay movable frame 44 is turned on or off by the operation of the plunger 36, the display body 56 is turned, and an ON or OFF display shown on the display body 56 appears in the opening 55.

  Next, in the arrangement relationship of the main contact device 8, the relay contact device 9, and the electromagnet device 31, the main contact device 8 is disposed on the upper side of the body 1, and the relay contact device 9 is connected to the main contact device 8. The electromagnet device 31 is disposed on the lower side of the body 1 with respect to the main contact device 8. In this case, the outer yoke 40 between the main contact device 8 and the permanent magnet 41 of the electromagnet device 31 also serves as a magnetic material, for example, an iron plate, which avoids the influence of the magnetic flux flowing on the main contact device 8 on the permanent magnet 41. To do. Further, the main contact device 8 and the relay contact device 9 of each pole are arranged in the space on the output side terminal 10 side of the opening / closing / trip mechanism 30 and the electromagnet device 31 in the body 1. The main contact device 8 has a main movable contact 8a having a main movable contact 60 fixed to the distal end side, a main fixed contact 61 fixed to the distal end side, and a base end facing the base end side of the main movable contact 8a. And a main fixed contact 8b extended in a shape. The relay contact device 9 includes a relay fixed contact 9b in which a relay fixed contact 62 is fixed on the front end side, a relay movable contact 63 fixed on the front end side, and a base end side as a base end side of the relay fixed contact 9b. For example, it has the relay movable contact 9a extended in the opposite direction. The main fixed contact 61 and the relay fixed contact 62 are disposed so as to be closer to the electromagnet device 31 than the main movable contact 60 and the relay movable contact 63.

  A set of the main movable contact 60 and the main fixed contact 61 and a set of the relay movable contact 63 and the relay fixed contact 62 are arranged side by side as shown in FIG. They are housed together in arc extinguishing chambers 64 for each pole formed in the case 2 of the container 1 and the partition member 5 so as to be lined up. The main fixed contact 61 and the relay fixed contact 62 are arranged so that the main fixed contact 61 is directed upward in the vertical direction of the device body 1, and the relay fixed contact 62 is the output side terminal 10 in the both end directions of the device body 1. It is pointing in a certain direction. An exhaust hole 64a of the arc extinguishing chamber 64 of each pole is formed in a corner portion between the upper surface of the container 1 and the end surface on the output side.

  Regarding the connection relationship between the main contact device 8 and the relay contact device 9 of each pole, the main contact device 8 and the relay contact device 9 of each pole are electrically connected by an arc driver 66 (see FIG. 15). The arc driver 66 passes from the base end side of the main fixed contact 8b to the side opposite to the main fixed contact 8b through the side of the main movable contact 8a so as to cross the base end of the main movable contact 8a. The connecting piece 67 extends, and the arc driving piece 68 extends from the connecting piece 67 to the main movable contact 8a so as to face the front end of the main movable contact 8a. Further, the proximal end portion of the relay fixed contact 9 b is connected to the distal end portion of the arc driving piece 68. As a result, the main fixed contact 61 and the relay fixed contact 62 are connected via the arc driver 66. The main fixed contact 8b, the connecting piece 67, the arc driving piece 68 and the relay fixed contact 9b are press-molded and bent by a single conductive plate, and the main fixed contact 61 and the relay fixed contact 62 are used as the conductive plates. It is stuck. In this case, the surface of the relay fixed contact 62 of the relay fixed contact 9b is fixed so as to be opposite to the fixed contact 61 side of the main contact device 8, and the main end of the relay fixed contact 9b on the base end side is fixed. An iron plate 70 is attached to the contact device 8 side. Further, the relay fixed contact 9b around the main fixed contact 61, the iron plate 70, the arc drive piece 68, the connecting piece 67 and the surface of the main fixed contact 8b facing the main fixed contact 61 are covered with the main fixed contact 61. An insulator 95 that forms the inner wall of the arc extinguishing chamber 64 is disposed in the arc driver 66. The relay movable contact 9a is formed with an extension piece 69 extending from the position where the relay movable contact 63 is fixed to the front end side, and the iron plate 70 is bent on both sides 70a from both sides thereof. A magnetic body 71 made of, for example, iron facing both side pieces 70a is attached to the extending piece 69.

  Here, the operation states of the main contact device 8 and the relay contact device 9 will be described. 1, 2, and 4 to 7 are states in which the relay movable contact 63 is turned on, off, or tripped by operating the handle 14 while the relay movable contact 63 is on. 8 to 11 show the relay contact device 9 in the off state and the main contact device 8 in the on or off state.

  As shown in FIG. 13, the abnormal current detecting device 7 has a movable side magnetic body 75a that performs an electromagnetic attraction operation with respect to the fixed side magnetic body 75b by a magnetic flux generated around the short-circuit current, as shown in FIG. It consists of a short circuit detection means 75 and an overcurrent detection means 76 using bimetal. In one pole, an intermediate portion of the operation lever 77 is pivotally supported on a shaft 78 provided on the input side partition member 4, and the operation lever 77 is operated clockwise by being pushed by the movable side magnetic body 75a or the bimetal. An operating lever 77 is connected to the tripping member 20 via a link 79. When the operating lever 77 is operated by short circuit detection or overcurrent detection, the tripping member 20 is rotated clockwise against the return spring 23. The lever 16 is pulled and operated. In the other pole, the tripping member 20 is provided with two operating lever portions 77a pressed by the movable-side magnetic body 75a and the bimetal of the abnormal current detection device 7.

  Moreover, in each pole, the input side terminal 6 of the electric circuit is a plug-in terminal that is disposed at one end in the both end directions of the container 1 and contacts a bar (not shown) connected to a main breaker (not shown). In order to fit a part of the container 1 into the bar, a groove 80 is formed at the end of the container 1, and the input side terminal 6 is disposed in the groove 80. The output side terminal 10 is a fast connection terminal using a lock spring 82 that fast connects the electric wire conductor 85, and is arranged inside the electric wire conductor insertion hole 83 formed in the case 2 and can be unlocked by the unlocking member 84. ing. The unlocking member 84 has a hole 84b in the middle portion, the shaft 98 passes through the hole 84b, and both ends of the shaft 98 are supported by the case 2 and the side cover 3 through the output-side partition member 5, and thereby unlocked. A member 84 is pivotally supported. A part of the lower end of the unlocking member 84 rests on the locking spring 82, and an engagement piece 86 is provided to engage with the tip of the wire conductor 85 that has passed through the locking spring 82 from the wire conductor insertion hole 83. The upper end portion of the unlocking member 84 is exposed from a part of the exhaust hole 64a formed in the case 2, and the display portion 84a is provided in the exposed portion of the upper end portion. The display portion 84a is positioned at the handle side edge of the container body 1 of the exhaust hole 64a when not pressed by the wire conductor 85, and pushes the engagement piece 86 at the tip of the wire conductor 85 to rotate counterclockwise. By moving, the display portion 84a of the unlocking member 84 moves slightly in the exhaust hole 64a of the case 2 as shown in FIGS. 20 to 21, and the display surface (shaded portion) of the display portion 84a is exposed. As a result, it is displayed that the wire conductor 85 has been securely inserted.

  The remote control terminal 90 of the electromagnet device 31 is provided below the output-side terminal 10 on one end surface of the container 1, and an end portion is mounted on the printed circuit board 49.

25 and 26 show another embodiment. Regarding the arrangement relationship between the electromagnet device 31, the main contact device 8, and the relay contact device 9, in the above embodiment, the electromagnet device 31 and the main contact device 8 are the body. 25, the relay contact device 9 is arranged on the output terminal side in the direction connecting both ends of the device body 1 with respect to both of them, whereas FIG. The main contact device 8 and the relay contact device 9 are arranged on the input side terminal side in the direction connecting the both ends and spaced apart.
In FIG. 26, the electromagnet device 31 and the relay contact device 9 are arranged in the vertical direction of the device body 1, and the main contact device 8 is arranged in the direction connecting both ends of the device body 1 with respect to both.

  In the present invention, the electromagnet device 31, the main contact device 8, and the relay contact device 9 are not limited to the arrangement relationship of the above embodiment, and any two of them are arranged in the vertical direction of the body 1 and the remaining one is You may arrange | position so that it may align with the direction which ties the both ends of the container 1 with respect to said two. In this case, the remaining one may be aligned with only the upper one or the lower one of the two.

It is sectional drawing of the ON state of the remote control type circuit breaker of one embodiment of this invention. FIG. It is a disassembled perspective view. It is sectional drawing of an OFF state. FIG. It is sectional drawing of a trip state. FIG. It is sectional drawing of a relay contact in an OFF state. FIG. It is sectional drawing of a main contact and a relay contact in an OFF state. FIG. It is an external appearance perspective view of an ON state. It is a side view of an abnormal current detection apparatus. It is sectional drawing of an electromagnet. It is a disassembled perspective view of an arc drive conductor. It is a side view of the state which the movable contact and the relay movable contact contacted. It is the sectional view on the AA line of FIG. It is a partially broken view of a container. It is an output side end view of a container. It is a fragmentary top view of the output side of a container. It is a fragmentary top view which shows operation | movement of the unlocking member of the state which connected the electric wire conductor. It is sectional drawing of the electromagnet apparatus of an ON state. It is sectional drawing of the off state. It is the circuit diagram and electric current waveform diagram of the on-off state of an electromagnet apparatus. It is explanatory drawing of other embodiment. It is explanatory drawing of other embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Body 6 Input side terminal 8 Main contact device 8a Main movable contact 8b Main fixed contact 9 Relay contact device 9a Relay movable contact 9b Relay fixed contact 10 Output side terminal 14 Handle 30 Open / close / trip mechanism 31 Electromagnet device 32 Insulating partition 36 Plunger 60 Main movable contact 61 Main fixed contact 62 Relay fixed contact 63 Relay movable contact

Claims (5)

An input / output terminal having one end of both ends as a plug-in terminal and the other end as a quick connection terminal, a main movable contact and a main fixed contact interposed in an electric path between the input / output terminals. A main contact device having an opening and a handle disposed on the upper surface of the container body, and the main movable contact is brought into and out of contact with the main fixed contact, and when an abnormal current flows through the electric circuit, the main movable contact is An open / close / trip mechanism for forcibly opening from the main fixed contact, a relay contact having a relay movable contact and a relay fixed contact interposed in series with the main contact device in the electric path between the input / output terminals, and an external signal In a remote control type circuit breaker provided with an electromagnet device having a movable iron core for moving the relay movable contact to and away from the relay fixed contact,
The electromagnet device has an operation direction of the movable iron core that connects the both ends of the container body, the plug-in terminal is in contact with a vertical direction of the container body with respect to a bar, and the main contact point In the apparatus, the operation direction of the main movable contact is the vertical direction of the container,
Any two of the electromagnet device, the main contact device, and the relay contact device are arranged in the vertical direction of the container body, and the other one is configured to connect the both ends of the container body to one or both of the two. A remote-control circuit breaker that is arranged in a lined direction.   2. The remote control type circuit breaker according to claim 1, wherein the main contact device and the electromagnet device are arranged side by side in the vertical direction of the body, and an insulating partition is provided between the main contact device and the electromagnet device.   The said main contact device and the said relay contact device are each arrange | positioned so that the said main fixed contact and the said relay fixed contact may be on the said electromagnetic device side rather than the said main movable contact and the said relay movable contact. Remote control circuit breaker.   The remote control type circuit breaker according to any one of claims 1 to 3, wherein the main fixed contact and the relay fixed contact are connected.   The remote control type circuit breaker according to claim 4, wherein the main fixed contact and the relay fixed contact are fixed to a single conductive plate.

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