JPS6286631A - Multipole circuit breaker - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a multi-pole circuit breaker constructed by connecting a plurality of single-pole circuit breakers, and particularly to a multi-pole circuit breaker constructed by connecting a plurality of single-pole circuit breakers. The present invention relates to a configuration of a multi-pole circuit breaker suitable for improving the reliability of tripping operation transmission.

[Background of the invention]

The conventional device is Utility Model No. 11185 4-5 7 3 6
As described in No. 7, when connecting single-pole circuit breakers to form a multi-pole circuit breaker, the connecting member connects only the tips of the handles. 1. In order to link the tripping operation to the other pole, the operation of the actuating plates provided independently from each other is linked to the engaging part of the connector rotatably sandwiched between the two poles. The signal was transmitted to the other pole by contacting the plate.

Therefore, there is a problem in that a time difference occurs between the opening/closing operation of the multipole and the tripping operation due to twisting of the connecting member during handle operation and play between the connector and the actuating plate during tripping, which is a problem in terms of protecting the electric circuit.

Further, no consideration was given to the equipment of accessory devices such as signal contacts to circuit breakers and auxiliary switches.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a highly reliable multi-pole circuit breaker that can effectively prevent the occurrence of time differences in multi-pole opening/closing operations and trip operations.

[Summary of the invention]

The present invention provides a movable contact base having a movable contact fixed to one end that connects and separates from a fixed contact, a handle for opening and closing the movable contact base, and an overcurrent response device that is connected to the movable contact base and operates in the event of an overcurrent. and a tripping member for tripping the movable contact block by the operation of the overcurrent response means. An interlocking member including a detection part for detecting the operation of the tripping member and a transmission part for transmitting the operation of the tripping member to the overcurrent response means is rotatably held between the single pole circuit breakers. It is characterized by:

According to a preferred embodiment, the interlocking member may have a connecting portion in the sensing portion, and a plurality of interlocking members may be connected at the connecting portion.

According to another preferred embodiment of the single-pole circuit breaker, a holding portion for an accessory device is formed on the connecting surface, and the accessory device is not held by the holding portion and outputs an output based on the operation of the interlocking member. may be configured to occur.

[Embodiments of the invention]

Embodiments of the present invention will be described below with reference to FIGS. 1 to 26.

A first embodiment of the present invention will be described with reference to FIGS. 1 to 1θ.

This embodiment shows an example in which three single-pole circuit breakers are connected to form a three-pole circuit Rvr device.

1# as shown in Figure 2! Case formed by molding 3 powders 1. Inside the cover 2 is a fixed contact 8 fixed to a fixed contact stand 7. A movable contact 6 that comes into contact with and separates from the fixed contact 8 is fixed to one end, and the other end is rotatably attached to an engaging portion 3b formed at an end substantially symmetrical to the operating portion 3a with respect to the support shaft 24 of the operating handle 3. Pivotally supported movable contact block 5. Hook 4. One end is rotatably supported by a pin 20 provided above the fixed contact base 7, the hook 4 is formed into a substantially rCJ shape, and the other end engages with the movable core 11. The movable contact base 5 and the hook 4 are stretched between the approximate center of the movable contact base 5 and the approximate center of the hook 4.
The spring that gives rotational force to 10. A fulcrum 1a is formed on the case 1 and the cover 2, respectively.

The left and right engaging parts are rotatably supported on 2a, and the cross section is approximately "
The upper part of the J-shape is pushed clockwise by the lock 12, and the inner part of the lower part of the 131 part is made of bimetal 13.
a movable core 11. arranged to engage with the movable core 11. Bimetal 1
Adjustment screw 15 for adjusting the amount of movement in step 3. Fixed contacts 8 at the bottom of the case l and cover 2. Arc extinguishing device 17 provided near the movable contact 5. A stopper 19 that restricts the movement of the movable contact base 5 when the contact is opened. During the tripping operation, the bin 21 moves counterclockwise (b) with the movement of the hook 4,
A metal fitting that presses the movable contact base 5 to hasten the opening of the movable contact base 9. A secondary conductor 14 whose one end is connected to the bimetal 13 and whose other end forms a secondary terminal is housed in a fixed core 16 under the bimetal 13. Terminal screws 18 are screwed into the terminal portions of the fixed contact base 7 and the secondary conductor 14.

In the operating handle 3, an operating portion 3a formed at the top protrudes from the upper surfaces of the case 1 and the cover 2, and a rotation center formed approximately in the center is formed on the case 1 and the cover 2, respectively, as shown in FIG. It is rotatably supported by a bearing portion 24 having an angle f′.

The hook 4 has its free end engaged with the movable core 11 and is biased by the spring 10 in a clockwise direction.

Next, ON/OF'F operations and trip operations will be explained with reference to FIGS. 3 to 5.

FIG. 3 shows the ON state, and FIG. 4 shows the OFF state.

When the energizing current is 1 or more than the rated current, the tip 4a, which is the free end of the 7-piece 4, is locked to the retaining part 11a of the fixed core 11, and in the ON state, the operating part of the operating handle 3 3
When a is rotated clockwise, the engaging part 3b that pivotally supports the movable contact block 5 moves beyond the dead center of the spring 10, and the movable contact 6 and the fixed contact 8 are separated by a snap action. , becomes OFF state.

If an overcurrent passes through, the tip of the bimetal 13 will curve counterclockwise due to Joule heat generated by this current. The lower end of this bimetal 13 engages with the inside of the lower part of the "J" shape of the movable core 11, and due to the increase in curvature, the movable core 11 is rotated counterclockwise around the fulcrums 1a and 2a. Ru. Due to this rotation, the engagement between the tip portion 4a of the hook 4 and the engagement portion 11a of the movable core 11 is released.
The hook 4 is biased by a spring 10 and rotates clockwise. Due to this rotation, the fulcrum of the spring lO provided at the center of the hook 4 moves, causing the movable contact base 5 and the handle 3 to move.
The movable contact base 5 is rotated counterclockwise beyond the engaging portion fill, and the contact opening operation is performed to reach the state shown in FIG.

In addition, if a large current due to a short circuit flows, the bimetal 13
Fixed core 16 located at the bottom of the bimetal 13
Without waiting for the bending of the movable part 11, the movable part 11 is attracted and the opening operation is performed in the same manner as in the case of the overcurrent. After the opening operation, the hook 4 and the movable contact base 5 are moved to the stopper 1 formed on the case 1.
It comes into contact with the upper and lower sides of 9 and stops, respectively.

The above is the operation for a single pole, but to configure a multi-pole circuit breaker by connecting several single-pole circuit breakers laterally, the opening/closing operation of the operating handle and the tripping in the event of overcurrent are required. It must be configured so that operations are carried out simultaneously in each pole.

In this embodiment, the following configuration is used to transmit the trip operation of one pole to the other pole (hereinafter referred to as "common pull"). The structure of the common sushi in this example will be explained with reference to FIGS. 6 to 8.

FIG. 6 shows the positions of the hook 4 and the movable core 11 before and after the tripping operation.

In the same figure, the actual position indicates before the trip operation, and the two-dot chain line indicates the position of the 7th gear 4 and the movable core 110 after the trip operation, respectively. Before the tripping operation, the tip 4 of the hook 4
A is engaged with an engaging portion 11a formed approximately at the center of the movable core. When an overcurrent flows and the bimetal 13 deforms, the movable core 11 rotates counterclockwise, the distal end 4a of the hook 4 disengages from the engagement portion 11a of the movable core 11, and the hook 4 is biased by the spring 10. Then, the bottle 20'l rotates clockwise around the center and comes into contact with the stopper 19, completing the tripping operation.

In this embodiment, the movement of the hook 4 is detected and transmitted to the other pole, and the common pull is to perform sushi.

The hook 4 has a circular arc part 4b with a radius A and a circular arc part 4'b with a radius A, and a circular arc part 4c (c=A+δ) with a radius C continuous to the tip 4a side of the hook 4, with the bin 20 serving as a fulcrum as the center. A circular arc portion 4b with radius A and a circular arc portion 4 with radius C are formed on the inner peripheral side.
A circular arc portion 4d having a radius B (B>O) is formed on the outer peripheral side of C. In this embodiment, the rotation of the hook 4 is detected using the dimensional difference δ between the inner circumferences and transmitted to the other pole. Openings 1b and 2b for detecting the movement of the hook 4 are provided on the side surfaces facing the other pole of the case 1 and the cover 2, respectively, and openings 1b and 2b for transmitting the detected movement of the hook 4 to various movable cores IIK are provided. Openings IC and 2C are provided, respectively. As shown in FIG. A transmission @ 44 for transmitting the information to various movable cores 11 is provided protrudingly, and at the bent part of the "(" character,
A pin 48, which is the center of rotation of the interlocking members 40 and 41, is provided protruding from both sides. On the side surface facing the other pole of the cover 1 and the case 2, there are recesses 1d and 2d in which the openings 11) and 2, as well as the approximately intermediate pins 48 of Ic and 2C, are fitted and rotatably supported. It is formed.

In this embodiment, the interlocking member 40 is configured such that the &water portion 42a of the detection section 42 has a larger diameter than the detection section 42, so that it acts as a reinforcement against the impact caused by the movement of the hook 4. 41, the detection s42 on one side has a root portion 42a, and the other side has a connecting portion 42b having the same diameter as the root portion 42a, and the interlocking member 40 is provided at the tip thereof.
A connecting hole 46 into which the detection section 42 is inserted is formed.

When the number of poles of the circuit 5tar is 2 poles, one interlocking member 40 may be inserted between each pole, and when it is 3 or more poles, the required number of interlocking members 401C and 41 may be added. good. FIG. 7 shows the connected state of the interlocking member 40 and the interlocking member 41 in the case of three poles.

By connecting the interlocking member 5 in this way, a common trip shaft is formed, and when the hook 4 of at least one pole is detached from the movable core 11 and rotates clockwise, the detection part 42
is pushed downward and each interlocking member rotates counterclockwise around the pin 48, and the transmission section 44 contacts and presses the movable core 11 of the other pole, causing the movable core 11 of the other pole to rotate counterclockwise. The movable core 11 and the hook 4 are disengaged by rotation, and the other poles are also tripped at the same time. After hook 4 trips,
Since the detection part 42 is held in a state in which it is in contact with the circular arc part 4bK of the radius A of the hook 4, the transmission part 44 is also held in a pressed state DK in contact with the movable core IIK. In this state, when the handle is rotated in the OFF direction to perform a reset operation, the lever 4 rotates counterclockwise and the suppression of the detection section 42 is released, so that the common trip shaft becomes free. As a result, the movable core 11 is urged clockwise by the spring 12 locked at one end and rotates.

Due to this rotational movement, the transmission part 44 that was in contact with the movable core 11 is pushed, and the common tripping shaft rotates clockwise around the fulcrum 48 and changes from the trip state to ON/0F.
It returns to its position in the IP state and the reset operation is completed.

Next, the connection of the handle will be explained with reference to FIGS. 9 to 22.

The connecting portion of the handle in this embodiment includes a movable contact base having a movable contact fixed at one end that contacts and separates from a fixed contact, a knob for opening and closing the movable contact base, and a handle connected to the movable contact base. a plurality of single-pole circuit breakers connected together, each comprising an overcurrent response means that operates in the event of an overcurrent; and a tripping member that trips the movable contact block by the operation of the overcurrent response means. The multi-polar circuit disconnector has a connecting member that connects the handle, and the nozzle has a first engaging portion formed near the tip thereof, and the nozzle at a position corresponding to the center of rotation of the nozzle. A second engaging portion is formed, and the connecting member has a third engaging portion that engages the first retaining portion and a fourth engaging portion that engages the second engaging portion. and is configured to integrally connect the nozzle.

Further, the connecting member is formed in a substantially "shape" shape, and the third engaging part and the fourth engaging part are interposed between the adjacent handles, and the third engaging part and the fourth engaging part are respectively connected to the first engaging part and the fourth engaging part of the noon handle. The present invention is characterized in that the handle is configured to be integrally connected by engaging with the second engaging portion.

In this embodiment, as shown in FIGS. 9 and 10, the various handles 3 have square holes 3C, which are the first engaging portions, formed on both sides near the tip, and have square holes 3C on both sides of the center of rotation. A circular recess 3d is formed on the surface. The circular concave portions 3d are fitted into bearing portions 24 protruding approximately cylindrical from the case 1 and the cover 2, respectively, so that the handle 3 is rotatably held. /% The circular concave 11S3d of the spindle 30 is provided with a hole 3e, which is a second engaging portion, at a position corresponding to the center of rotation.

The bearing portion 24 formed on the case l and the cover 2
A through hole 23 is formed at a position corresponding to the center of rotation of the handle 30, respectively.

The connecting plate 30, which is a connecting member that connects the handles between adjacent poles, is formed in a substantially "shape" shape. The convex part s
32 is formed, and a convex portion 34, which is a fourth engaging portion that engages with the hole 3e, is formed at both ends of the lower side of the “E” character.

In this embodiment, the convex portion 34 passes through the through hole 23 and is fitted into the hole 3eK, thereby transmitting the rotational movement of the needle 3 to the other pole. Further, the inner diameter of the through hole 23 is larger than the outer diameter of the convex portion 34 . Therefore, the rotation of the handle 3 can be effectively transmitted to other poles, so when multiple poles are connected, the difference in operating time of the multiple poles can be reduced even if ON/OyF@ is performed using the knob at the end. At the same time, the through hole 23 and the convex h
34 can be reduced.

Note that the convex portion 34 does not necessarily have to be inserted into the hole 3e, and as shown in FIG. 23 may be rotatably supported. In this way, in the Sakaki molding, the protrusion s34 is short, which reduces material costs, and there is no need for precision fitting between the protrusion 34 and the hole 3e, thereby reducing the number of parts manufacturing steps.

A second embodiment of the present invention will be described with reference to FIGS. 12 and 13.

In this embodiment, round holes 3C', which are first engaging parts, are bored on both sides near the tip of the handle 3, and circular recesses 3d on both sides of the part that is the center of rotation correspond to the center of rotation. A square hole 3e', which is a second engaging portion, is bored at the position where the second engaging portion is formed. Correspondingly, the connecting plate 30 includes a cylindrical convex portion 32' as a third retaining portion, and a convex portion 34' having a square cross section as a fourth retaining portion. According to this embodiment, the handle 3
The rotation of the connecting plate 30 can be effectively transmitted to the other pole.
When transmitting ON/OFF operation to another pole via
It is possible to prevent stress concentration between the engaging part and the second engaging part, and it is possible to prevent damage to the nozzle during ON/OFF operation.

A third embodiment of the present invention is shown in FIGS. 14 to 16.

In this embodiment, a convex portion 32a, which is a third engaging portion of the connecting plate 30, has a sawtooth shaped cross section on its circumference in a direction perpendicular to the press-fitting direction of the convex portion 32.
, and when press-fitting into the square hole 3cK, which is the first engaging part formed on the handle, the top of the serrated convex part 32a fits into the square hole 3C.
The connecting plate 30 is fixed to the handle 3 by elastically abutting the inner periphery of the handle 3.

According to this embodiment, since the connection member and the handle are engaged elastically, precision fitting between the convex portion 32 and the square hole 3C is not required, and the number of man-hours for manufacturing the parts can be reduced.

A fourth embodiment of the present invention will be described with reference to FIG. 17 and tm18. In this embodiment, the connecting member is composed of a connecting frame 62 and a lever 60. The tip of No. 3 is the first
A tapered portion 3f, which is an engaging portion, is formed, and through holes 23 are formed on the side surfaces of the case l and the cover 2 at positions corresponding to the center of rotation of the handle 3, respectively. The lever 60 has a substantially cross-shaped shape, and a convex portion 34, which is a fourth retaining portion, is bored on both sides of the lower end. The upper part 60a of the lever 60 has a substantially flat plate shape and is fitted into the connecting frame 62 (h621),
The lever 60 and the connecting frame 62 are integrated.

The connecting frame 62 is formed with a skin 62a that is a third engaging portion that engages with the tapered portion 3f of the tip of the nozzle 3. The tapered part 3f of the handle 3, the upper part 60a of the lever 60, and the grooves 62a and 62'b of the connecting frame 62 are fixed so that they do not easily fall off during use. As a fixing method, adhesive, friction by fitting, etc. may be used, and furthermore, the tapered part 3f
, a concavo-convex portion is formed between the lever upper part 60a and 1162a, 62b to connect the connecting frame 62 to the handle 3 and the lever 60.
It may also be locked to. The convex portion 34 protruding from the lever 60 is connected to a hole 3e formed at the center of rotation of the handle 3.
Alternatively, it may be simply supported by the through hole 23. In this embodiment, the connecting frame 62 and the lever 60 are formed as separate members, but they may be integrally molded in advance.

Note that FIG. 17 shows an example in which this embodiment is applied to a two-pole circuit breaker, and FIG. 18 shows an example in which this embodiment is applied to a three-pole circuit breaker.

A fifth embodiment of the present invention will be described with reference to FIG.

This figure shows a three-pole circuit breaker to which this embodiment is applied. In this embodiment, the connecting members are the lever 64, the bottle 66, and the K.
It is composed of The handle 3 has a through hole 3g, which is a first engaging part, formed near its tip, and the lever 64 also has a through hole 64a, which is a third engaging part, at its tip.
is formed.

The lever 64 has a multi-pole inter-handle tip part that is soft-attached, and the convex part 34, which is a fourth engaging part protruding from both sides of the lower part, is the second retaining part, which is the center of rotation of the handle 3. is inserted into the hole 30 of. A bottle 66 is installed in the through hole 3g and the through hole 64a.
is inserted, and both ends of the bottle 66 are deformed to have a diameter larger than the diameter of the through hole by caulking or the like to prevent them from falling off. The inner diameters of the through-holes 3g and 64a are set slightly larger than the outer diameter of the bottle 66 to facilitate insertion and insertion of the bottle 66 during assembly, and to prevent deviations in the operating time of the six poles due to the handle during operation.

A sixth embodiment of the present invention will be described with reference to FIG. 20 and wJ21.

In this embodiment, the lower end of the connecting member 30 is extended, and in addition to the convex portion 34, convex portions 34a are further provided protrudingly provided on both sides of this extended portion. Correspondingly, an engagement portion with the convex portion 34a is provided below the center of rotation of the handle 3, and adjacent nodles are connected at three points to ensure transmission of the movement of the nodles. It is something. In this embodiment, the side surfaces of the case 1' and the cover 2' located between the poles are
An oblong hole 25 is formed on an arc whose radius is the distance from the convex portion 34 to the convex portion 34a with the center of rotation of the nozzle 3 as the center.

A seventh embodiment of the present invention will be described with reference to FIG. 22.

In this embodiment, the connecting member and the handle are integrated. FIG. 22 shows a two-pole case, in which a protrusion formed on the nozzle 67 and a recess formed on the handle 68 are engaged so that the six-pole nozzles move simultaneously.

The handle 67 has a connecting portion 67a functioning as a connecting member formed on the side facing the other pole at the tip thereof, and a convex portion 671) which is a third engaging portion is formed at the tip. Also,
A connecting portion 67c that functions as a connecting member is protruded from the center of rotation of the handle 67, and a convex portion 671, which is a fourth engaging portion, is formed at the tip of the connecting portion 67c.

On the other hand, the handle 68 has a first pole on the side opposite to the other pole at the tip end.
A concave portion 68a, which is an engaging portion, is formed, and a concave portion 68c, which is a second engaging portion, is formed at the tip of the connecting portion 681) protruding from the center of rotation. Connecting parts 68b and 67c of case 1' and cover 2' that are adjacent to each other between two poles, respectively.
Through holes 1'a and 2'a are bored at positions corresponding to . The connecting portion 68t) is fitted into the through hole 1'aK, and is provided so that the tip thereof is located near the surface of the case 1'.

The connecting portion 67c is fitted into the through hole 2'a and is provided so that a convex portion 67 (l) formed at the tip thereof protrudes from the surface of the cover 2'.

The concave portion 68a of the handle 68 is provided so as to be located near the extended surface of the surface of the case 1', and the convex portion 68a of the handle 67
71) is provided so as to protrude from the extended surface of the cover 2'.

Since the present embodiment is configured as described above, connection can be achieved by simply placing the six-pole handles adjacent to each other and fitting the convex portion and the concave portion at the tip of the handle and the center of rotation, respectively. The number of parts can be reduced. 1. Since the movement of the handle is transmitted to the other pole through the intervening object, the movement of the handle can be quickly and accurately transmitted to the other pole. This embodiment has been described for the case of two poles, but the handle 67
A circuit breaker having L-3 or more poles may be constructed by forming a recess similar to the handle 68 on the surface opposite to the convex portion.

An eighth embodiment of the present invention will be explained with reference to FIGS. 23 and 24.

In this embodiment, the moving member 40 or 41 provided between each pole is
A convex portion 43 is provided at one end, and a button 50a of a limit switch 50, which is an accessory device disposed between the poles, is pushed in by counterclockwise rotation during a common tripping operation. As a result, the tripping operation can be taken out as an external signal, and a circuit breaker equipped with an alarm switch can be obtained.

Case 1, which is a connection surface. The surface 9 of the cover 2 is provided in advance with grooves is and 2e, which are holding portions for holding the limit switch 50 and the lead wire 54, respectively.

A ninth embodiment of the present invention will be described with reference to FIGS. 25 and 26.

In this embodiment, a convex portion 30a is provided by extending the lower I11 from the rotating branch portion of the handle connecting member 30 provided between each pole,
From this convex portion 30aK, case 1. The button 50a of the limit switch 50, which is an accessory device held in the grooves 1e and 2e, which are the holding parts between the hooks (-2), is pushed in and operated. According to the (rotation) of 30, the limit switch is set to O.
It is possible to obtain a circuit breaker equipped with an auxiliary switch that turns on and off and sends a signal to the outside that the contact is important.

〔Effect of the invention〕

According to the present invention, it is possible to effectively prevent the occurrence of operating time differences in the opening/closing operation of the multi-pole case or the tripping operation, and it is possible to obtain a highly reliable multi-pole circuit breaker.

[Brief explanation of drawings]

FIG. 1 is a plan view of a multi-pole circuit breaker according to a first embodiment of the present invention, FIG. 2 is a sectional view showing the configuration of a multi-pole circuit breaker according to a first embodiment of the present invention, and FIG. Figures 4 and 5 are front views showing the operation of the main parts of the mechanism at ON, OFF, and TR11, respectively. Figure 6 is a front view showing the movement of the hook during tripping. Figure 7 is a front view showing the movement of the hook during tripping. FIG. 8 is a side view showing the positional relationship between the movable core and the interlocking member in the first embodiment of the invention, FIG. 8 is a perspective view showing the shape of the movement member in the first real male side of the invention, FIGS. 9 and 10 11 is a perspective view and a sectional view showing the relationship between the handle and the connecting member in the first embodiment of the present invention, FIG. 11 is a side sectional view showing a modified example of the handle and the connecting member in this embodiment, and FIG. , FIG. 13 is a perspective view and a side sectional view showing the relationship between the handle and the connecting member in the second embodiment of the present invention, and FIGS. 14, 15, and 16 are respectively in the third embodiment of the present invention. , a front view of the connecting member, an enlarged view of the engaging part, a sectional view showing the state of engagement with the handle, and FIGS. 17 and 18 are perspective views of a multi-pole circuit breaker in a fourth embodiment of the present invention, respectively. , FIG. 19 is a side sectional view showing the engaged state of the handle and the connecting member, and FIG. 21 are a side sectional view and a perspective view of the connecting member, respectively, showing the engaged state of the handle and the connecting member in the sixth embodiment of the present invention, and FIG. 22 is the handle and the connecting member in the seventh embodiment of the present invention. 23 and 24 are a side sectional view and a front view, respectively, showing the attached state of the accessory device of the multi-pole circuit breaker in the eighth embodiment of the present invention, and FIG. 25, 26th
The figures are a side view and a front view showing a state in which accessory devices are attached to a multi-pole circuit breaker according to a ninth embodiment of the present invention. 1e, 2θ: Holding part, 3: Handle, 3c, 3c', 3
f, 3g, 68a: first engaging portion, 3θ. 3e', 23, 68c: second engagement part 4: tripping member,
5: Movable contact stand, 6: Movable contact, 8: Fixed contact, 11:
Overcurrent response means, 30. 60, 62°64, 66.
67a, 67c: Connection member, 32°32'
, 62a, 64a, 67b: third engaging portion, 34, 6
7a: Fourth engaging portion, 40, 41: Movement member, 42: Detection portion, 42b = Connection portion, 44: Transmission portion, 50: Attached device Figure 1 $ 2 Figure $ 5 @ Figure 6 $ 7 $8 Figure $IO Figure /I Figure j 1 3e'3e' $14 Figure if, t7 Figure 18 12J $19 Agony $20 Figure 21 $22 Figure 4 Bird 21 $25 Figure

Claims (1)

[Claims] 1. A movable contact base having a movable contact fixed to one end that makes contact with and separates from the fixed contact, and a handle for opening and closing the movable contact base;
A single-pole circuit breaker comprising an overcurrent response means that is connected to the movable contact base and operates in the event of an overcurrent, and a tripping member that trips the movable contact base by the operation of the overcurrent response means. In a multi-pole circuit breaker formed by connecting a plurality of single-pole circuit breakers, a detection section for detecting the operation of the tripping member and an overcurrent response means for detecting the operation of the tripping member for the other pole are provided between the single-pole circuit breakers. 1. A multi-pole circuit breaker, characterized in that a moving member including a transmitting portion for transmitting data is rotatably held. 2. The multi-pole circuit breaker according to claim 1, wherein the interlocking member has a connecting part in the detecting part, and a plurality of interlocking members are connected by the connecting part. 3. The single-pole circuit breaker is configured such that a holding part for an accessory device is formed on the connecting surface, and the accessory device is held by the holding part and generates an output based on the operation of the interlocking member. A multi-pole circuit breaker as claimed in claim 1.