JP3248376B2 - Circuit breaker terminal equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal device for a circuit breaker.

[0002]

2. Description of the Related Art In a conventional terminal device of a circuit breaker, a terminal plate is disposed on each of two upper and lower terminal seats formed in a stepped shape, and terminal screws are screwed to each terminal plate. However, when connecting the electric wires to the lower terminal plate after connecting the electric wires to the upper terminal plate, the work of connecting the electric wires to the lower terminal plate was difficult due to the obstruction of the upper electric wires.

Accordingly, the present applicant has proposed the one shown in Japanese Patent Application No. 5-244498. As shown in FIG. 9, this is a stepped shape between the left and right isolation walls 2 and 3 of the circuit breaker with the upper part on the back side in the wire insertion direction and the lower part on the near side in the wire insertion direction, and Upper and lower terminal seats 10, 2 formed by shifting their center portions 10a, 20a mutually in the left-right direction.
0, and upper and lower terminal plates 30, 4 which have terminal screws for connecting electric wires and are disposed on the upper and lower terminal seats 10, 20, respectively.
0.

According to the terminal device of the circuit breaker , even if an electric wire is connected to the upper terminal plate 30, the lower terminal plate 40 is not provided on the front surface from which the electric wire is led out. when connecting the electric wire to the lower terminal board 40 after connecting, not upper wires a hindrance, that Do facilitates the task of connecting the electric wire to the lower terminal plate 40 has.

[0005]

The object of the invention is to solve] Thus, the above-mentioned times
The terminal device of a circuit breaker has a step-like shape with the upper part on the back side in the wire insertion direction and the lower part on the front side in the wire insertion direction between the left and right isolation walls. Are shifted from each other to form upper and lower terminal seats,
Since the upper and lower terminal plates having terminal screws for connecting the electric wires to these terminal seats are arranged, when connecting the electric wires to the lower terminal plate by operating the head of the terminal screws with a driver, However, there is a risk that the upper terminal plate may touch the upper terminal plate, and insulation between the upper terminal plate and the lower terminal plate cannot be achieved.

The present invention has been made in view of the above circumstances, and has as its object to connect an electric wire to an upper terminal plate.
After connecting the wires to the lower terminal board,
Easy to connect wires to lower terminal board without disturbing
It is another object of the present invention to provide a terminal device for a circuit breaker in which insulation between an upper terminal plate and a lower terminal plate is enhanced.

[0007]

To solve SUMMARY OF THE INVENTION The above problems, terminal device for the circuit breaker according to claim 1, wherein the right and left septum
And Hanarekabe, a stepped a wire insertion direction front side and a lower as well as the wire insertion direction rear side and upper in the lateral isolation walls
In a terminal device of a circuit breaker, comprising: an upper and lower terminal seats formed so as to have upper and lower terminal plates each having a connection screw for connecting an electric wire and disposed on the upper and lower terminal seats, respectively. The interval between the left and right isolation walls is
Longer than the width of one of the lower terminal seats, and
The upper and lower terminal seats for two
Shorter than the width dimension and the upper and lower terminals
The seat is a position where the center from the wire insertion direction is shifted from each other.
And the base end is located on the inner side surface in the left-right direction of the lower terminal board and the tip extends parallel to the isolation wall, and the side piece that isolates the electric wire connected to the upper terminal board and the lower terminal board. An insulating plate having a base end connected to the upper terminal plate side of the side piece and a distal end extending to the lower terminal plate side to isolate the upper terminal plate and the lower terminal plate is provided.

According to a second aspect of the present invention, there is provided a terminal device for a circuit breaker.
The insulating plate of the first aspect is formed of an elastic material, and has a configuration in which the base end side of the side piece is fixed, and the distal end side of the side piece and the cover piece connected to the distal end side are free ends. .

According to a third aspect of the present invention, there is provided a terminal device for a circuit breaker ,
According to a second aspect of the present invention, a concave portion is formed in an isolation wall adjacent to the lower terminal seat of the second aspect so as to lock the tip of the side piece while the insulating plate is bent at a substantially right angle.

The terminal device for a circuit breaker according to claim 4 is
In a state where the side piece of the insulating plate according to claim 2 or 3 is bent at a substantially right angle in the direction of the lower terminal board, at least one of the tip of the side piece and the base end of the cover piece is formed of the separating wall and the lower terminal seat. At least one of them is elastically locked.

According to a fifth aspect of the present invention, there is provided a terminal device for a circuit breaker ,
The end of the side plate of the insulating plate and the base of the cover in a state where the side piece of the insulating plate is bent at a right angle to at least one of the isolation wall and the lower terminal seat adjacent to the lower terminal seat according to claim 2 or 3. It has a configuration in which a concave portion for locking at least one of the ends is formed.

According to a sixth aspect of the present invention, there is provided a terminal device for a circuit breaker ,
The upper terminal board according to any one of claims 1 to 5 has a configuration in which the upper terminal board is disposed a predetermined distance deeper from the wire insertion direction of the upper terminal seat.

According to a seventh aspect of the present invention, there is provided a terminal device for a circuit breaker ,
7. An upper terminal seat according to any one of claims 1 to 6, further comprising a lead portion extending from the front surface of the upper terminal plate in the wire insertion direction to the front surface of the lower terminal seat in the wire insertion direction. The side plate of the insulating plate is located between the terminal plate and the terminal plate.

[0014]

According to the structure of the first aspect, the space between the left and right isolation walls is provided.
Set the interval to the width of one of the upper and lower terminal seats.
Long, and the upper and lower terminal seats are
And the width is shorter than the width of two
The upper and lower terminal seats are aligned with the center from the wire insertion direction.
Since they are arranged at positions offset from each other,
There is no need to widen the space between the left and right isolation walls, and the upper terminal
After connecting the wires to the board, connect the wires to the lower terminal board
In this case, the upper wire is not in the way,
The work of connecting the wires becomes easy. Also, the base end is located on the inner side surface in the left-right direction of the lower terminal plate, and the tip extends parallel to the isolation wall, and the side piece that isolates the electric wire connected to the upper terminal plate and the lower terminal plate, and A cover piece that is connected to the upper terminal plate side of the side piece and has a tip extending to the lower terminal plate side to isolate the upper terminal plate and the lower terminal plate; When connecting the electric wires by screwing the terminal screws to the lower terminal plate in a state where the driver to be operated is inclined toward the upper terminal plate, the cover of the insulating plate is sandwiched between the driver and the upper terminal plate.

According to the second aspect of the present invention, the insulating plate is formed of an elastic material, and the base piece of the side piece is fixed, and the end piece of the side piece and the cover piece connected to the tip side are provided. Is a free end, so that the electric wire can be connected to the upper terminal plate while the insulating plate is bent toward the lower terminal plate.

According to the third aspect of the present invention, the side of the insulating plate is bent in the direction of the lower terminal plate so that the tip of the cover comes into contact with the isolation wall, and the distal end of the side piece is the electric wire of the upper terminal plate. Since it is located at the substantially inner end of the front side in the insertion direction, if the electric wire is connected to the upper terminal plate diagonally from the lower terminal plate side, the cover of the insulating plate will abut against the isolation wall and the insulating plate will not bend further .

According to the fourth aspect of the present invention, in a state where the side piece of the insulating plate is bent at a substantially right angle in the direction of the lower terminal board, at least one of the distal end of the side piece and the base end of the cover piece is formed by the partition wall and the base. Since the wire conductor is elastically locked to at least one of the lower terminal seats, after connecting the electric wire conductor to the lower terminal plate, the side piece of the insulating plate is bent at a substantially right angle in the direction of the lower terminal plate, and the terminal screws of the lower terminal plate are insulated. In the state covered with the side piece, at least one of the side piece and the cover piece of the insulating plate can be elastically engaged with at least one of the isolation wall and the lower terminal seat.

According to the fifth aspect of the present invention, at least one of the lower terminal seat, the partition wall adjacent to the lower terminal seat and the lower terminal seat,
The side plate of the insulating plate is bent at a substantially right angle to form a concave portion for locking at least one of the tip of the side plate and the base end of the cover, so after connecting the wire conductor to the lower terminal plate, In a state where the side piece is bent toward the lower terminal board side and the terminal screws of the lower terminal board are covered with the side piece of the insulating plate, at least one of the tip of the side piece and the cover piece can be locked in the recess.

According to the configuration of the sixth aspect, the upper terminal plate is disposed at a predetermined distance from the wire insertion direction of the upper terminal seat, so that when the insulating plate is bent toward the lower terminal plate,
The cover of the insulating plate does not contact the upper terminal plate.

According to the above configuration, the upper terminal seat is provided with a lead portion extending from the front surface of the upper terminal plate in the wire insertion direction to the front surface of the lower terminal seat in the wire insertion direction, and the lead portion and the lower terminal are provided. Since the side piece of the insulating plate is positioned between the insulating plate and the plate, even if the insulating plate attempts to bend toward the upper terminal plate, only the distal end is bent.

[0021]

BRIEF DESCRIPTION one embodiment a are based <br/> in FIGS. 1-8 of the present invention.

As shown in FIG. 3, the circuit breaker includes a body 1 containing each member (not shown),
A housing is formed from the first and second covers 2, 3 sandwiching the housing. The input terminals 4 and 5 for the power supply side line and the ground side line of the electric circuit are arranged on one side of this housing, and the opening and closing operation between the output terminal of the power supply side line and the ground side line and the ground side input / output terminal on the other side of the housing. A neutral handle 6 is provided. In the center of the housing, there is formed a handle convex portion that protrudes an operation handle 7 for electrically opening and closing the power supply side input / output terminals of the electric circuit, and a window hole formed in the middle lid of the distribution board. It is possible to fit into. The first cover 2 and the second cover 3 are left and right isolation walls that sandwich the terminals described above. On the second cover 3 side (right isolation wall), there is formed a concave portion 3a (see FIG. 8) for locking a side piece 51 of an insulating plate 50 described later in a state of being bent at a substantially right angle.

The terminal device of the present invention is an output terminal side, which is the other side of the circuit breaker. As shown in FIG.
And upper and lower terminal seats 10 and 20 disposed between the second covers 2 and 3 (left and right isolation walls), and terminal screws 31 and 41 respectively provided on the upper and lower terminal seats 10 and 20. Upper and lower terminal plates 30 and 40 and an insulating plate 50 for isolating the terminal plates 30 and 40 from each other.

As shown in FIG. 2, the upper terminal seat 10 and the lower terminal seat 20 are provided with the first and second covers of the circuit breaker described above.
The center terminal 10a and 20a from the wire insertion direction are shifted from each other in the left and right direction between 2, 3 (left and right isolation walls), and the upper terminal seat 10 is located on the side of the neutral handle 6 on the back side in the wire insertion direction. A lower terminal seat 20 is formed on the front side of the neutral handle 6 on the front side in the wire insertion direction. The upper terminal seat 10 is provided with a lead portion 11 extending from the front surface of the upper terminal plate 30 in the wire insertion direction to the front surface of the lower terminal seat 20 in the wire insertion direction. Deflection in the direction of the terminal seat 20 is prevented.
In addition, fitting holes 11a for fitting the lower terminal plate 40 between the second cover 3 (right isolation wall) and the side pieces 42a, 42a of the lower terminal plate 40 described later are fitted into the side surfaces of the lead-out portion 11. And a polarity display character indicating the polarity (ground side N) of the upper terminal plate 30 is written on the upper surface of the lead-out section 11. The lower terminal seat 20 is arranged such that the mounting surface for mounting the lower terminal plate 40 is shifted toward the center of the housing so that the back side in the wire insertion direction is closer to the upper terminal seat 10 side, and the storage space for the lower terminal plate 40 is provided. Is secured. An insertion hole (not shown) for accommodating a conductive piece 42b of the lower terminal plate 40, which will be described later, is formed on the inner side of the lower terminal seat 20 in the wire insertion direction. It is electrically connected to the side movable contact.
A nut 1 having a screw hole 12a as shown in FIG. 2 is provided substantially at the center of each of the upper terminal seat 10 and the lower terminal seat 20.
2 are housed, and terminal screws 31 and 41 are screwed to each other so that electric wires can be connected.

As shown in FIGS. 1 to 4, the upper terminal plate 30 and the lower terminal plate 40 are respectively provided with terminal screws 31 and 41 having contacts 31a and 41a, and a power supply side contact interposed in the power supply side line of the electric circuit. And plate members 32 and 42 which are electrically connected to the ground side contacts interposed on the ground side lines of the electric circuit and connect the electric wire conductor between the terminal screws 31 and 41, respectively. Upper plate 32
On both sides, a fitting piece (not shown) that protrudes and fits into the first cover 2 (left isolation wall) side, and a conductive portion (not shown) that protrudes toward the neutral handle 6 and has a ground-side fixed contact. ), And is fitted and fixed between the first cover 2 (left isolation wall) and the neutral handle 6. On both sides of the lower plate 42, fitting pieces 42a projecting toward the fitting hole 11a of the above-described lead-out portion 11 and projecting toward the second cover 3 (right isolation wall).
42a, the second cover 3 (right isolation wall) and the outlet
Fitted and fixed between 11 In addition, the lower plate 42 has
A conductive piece 42b is formed to be electrically connected to the power supply side movable contact inside the circuit breaker, and is fixed in a state of being inserted through the insertion hole of the lower terminal seat 20. The upper terminal plate 30 is shown in FIG.
As shown in FIG. 3 to FIG. 3, the upper terminal seat 10 is disposed at a predetermined distance from the wire insertion direction, and when the insulating plate 50 is bent toward the lower terminal plate 40, Since the cover piece 52 does not abut against the upper terminal board 30, the risk of the cover piece 52 of the insulating plate 50 rubbing against the upper terminal board 30 to be broken is reduced, and the insulation between the upper terminal board 30 and the lower terminal board 40 is strengthened. I can do it.

The insulating plate 50 is made of an elastic material such as a synthetic resin. As shown in FIGS. 1 to 4, the base end is located on the inner side surface of the lower terminal board 40 in the left-right direction, and the second end is located at the second end. 3 Side pieces extending parallel to the covers 2 and 3 (left and right isolation walls) to isolate the electric wires connected to the upper terminal plate 30 and the lower terminal plate 40
51, the base end of which is connected to the upper terminal plate 30 side of the side piece 51 and the distal end extends to the lower terminal plate 40 side, and the upper terminal plate 30 and the lower terminal plate 40
Is formed in a substantially L-shape from a cover piece 52 for isolating the cover.
By providing the insulating plate 50, a driver (not shown) operating the head of the lower terminal screw 41 can operate the upper terminal plate 30.
When connecting the electric wire by tightening the terminal screws 41 in the state inclined to the side, the insulating plate is placed between the driver and the upper terminal plate 30.
Since the cover piece 52 of 50 is sandwiched, the work of connecting the electric wire of the upper terminal plate 30 and the work of connecting the electric wire of the lower terminal plate 40 can be separated, and the insulation between the upper terminal plate 30 and the lower terminal plate 40 is strengthened. I can do it. Further, by disposing the side piece 51 of the insulating plate 50 between the lead-out portion 11 and the lower terminal plate 40,
Even if the electrode 50 attempts to bend toward the upper terminal plate 30, only the distal end is bent, so that the insulating plate 50 itself is hardly broken.

The base end of the side piece 51 has an elongated hole 51a through which the fitting piece 42a of the lower terminal plate 40 is inserted, and a leg 51b sandwiched between the lower terminal plate 40 and the lower terminal seat 20. Then, the fitting piece 41a of the lower terminal board 40 is fitted into the fitting hole 11a of the lead-out portion 11, and the leg 51b is sandwiched between the lower terminal board 40 and the lower terminal seat 20, thereby setting the base end of the side piece 51. It is fixed, the tip side of the side piece 51 and the cover piece 52 are free ends, and the insulating plate 50 is a lower terminal plate.
The electric wire 60 can be connected to the upper terminal plate 30 in a state where the electric wire 60 is bent to the 40 side, and the operation of connecting the electric wire to the upper terminal plate 30 is facilitated.

As shown in FIGS. 5 and 6, the side plate 51 of the insulating plate 50 is bent in the direction of the lower terminal plate 40 so that the tip of the cover 52 contacts the second cover 3 (right isolation wall). Side piece
By setting the lengths of the cover piece 52 and the side piece 51 so that the distal end side of the 51 is located substantially at the inner end of the front side 30a in the wire insertion direction of the upper terminal board 30, the electric wire 60 becomes the lower terminal board 40 side. Even when connecting to the upper terminal board 30 obliquely from the right direction, it can be easily connected. In this case, the tip of the cover piece 52 of the insulating plate 50 is
By contacting the cover 3 (the right isolation wall), the insulating plate 50 is no longer bent, and the work of connecting the electric wire to the lower terminal plate 40 is facilitated.

As shown in FIGS. 7 and 8, after the electric wire conductor is connected to the lower terminal plate 40, the side piece 51 of the insulating plate 50 is bent toward the lower terminal plate 40, and the terminal screws of the lower terminal plate 40 are bent. In a state where 41 is covered with the side piece 51 of the insulating plate 50, at least one of the tip of the side piece 51 and the cover piece 52 can be locked in the recess 3a,
Further, the insulation between the upper terminal plate 30 and the lower terminal plate 40 can be strengthened, and the side piece 51 of the insulating plate 50 can be firmly held in a state of being bent at substantially a right angle. In the present embodiment, the concave portion 3a is provided in the isolation wall 3, but it may be provided in the lower terminal seat 20 on the back side in the electric wire insertion direction so as to lock the cover piece 52 of the insulating plate 50. Further, in a state where the side piece 51 of the insulating plate 50 is bent at a substantially right angle in the direction of the lower terminal board 40, at least one of the distal end of the side piece 51 and the base end of the cover piece 52 is formed by the separating wall 3 and the lower terminal seat 20. If at least one is elastically locked, the insulating plate 50
There is no need to provide the locking recess 3a.

In this embodiment, the insulating plate is made of an elastic material. However, when the insulating plate is made of an elastic material such as plastic or the like in a substantially L-shape, the upper terminal plate and the lower terminal plate are formed. If it can be attached after connecting the electric wires to each other, it will not hinder the connection of the electric wires, and the insulation between the upper terminal plate and the lower terminal plate can be strengthened.

[0031]

According to the terminal device of the circuit breaker according to the first aspect, the distance between the left and right isolation walls is set to be equal to that of the upper and lower terminal seats.
It is longer than the width of one of them, and the upper and lower rows
Than the width dimension of two when the terminal seats are arranged side by side
In addition to shortening, the upper and lower terminal seats
It is arranged at the position where the center from the entering direction is shifted from each other
The gap between the left and right isolation walls of the circuit breaker.
It is not necessary to connect the wires to the upper terminal board
When connecting the electric wire to the slave board, the upper electric wire does not get in the way,
Accordingly, the work of connecting the electric wire to the lower terminal board becomes easy.
Also, the base end is located on the inner side surface in the left-right direction of the lower terminal plate, and the tip extends parallel to the isolation wall, and the side piece that isolates the electric wire connected to the upper terminal plate and the lower terminal plate, and A cover piece that is connected to the upper terminal board side of the side piece and whose tip extends to the lower terminal board side to isolate the upper terminal board and the lower terminal board;
When the driver operating the head of the terminal screw is connected to the lower terminal plate by screwing the terminal screw to the lower terminal plate in a state inclined to the upper terminal plate side, the driver and the upper terminal The insulating plate cover is sandwiched between the upper and lower plates to separate the wire connection work for the upper terminal plate and the wire connection work for the lower terminal plate, which enhances the insulation between the upper and lower terminal plates. I can do it.

According to the terminal device of the circuit breaker according to the second aspect, the insulating plate is formed of an elastic material, and the base end of the side piece is fixed and connected to the tip end of the side piece and the tip side. Since the installed cover piece is a free end, it is possible to connect the electric wire to the upper terminal board while the insulating plate is bent to the lower terminal board side,
In addition to the effect of the first aspect, the work of connecting the electric wire to the upper terminal board is facilitated.

According to the terminal device of the circuit breaker of the third aspect, the tip of the side piece is bent in a state in which the side piece of the insulating plate is bent in the direction of the lower terminal plate so that the tip of the cover piece is in contact with the isolation wall. Since it is located at the approximate inner end of the front of the upper terminal board in the wire insertion direction,
3. When the electric wire is connected to the upper terminal plate obliquely from the lower terminal plate side, the cover of the insulating plate abuts against the separating wall, and the insulating plate does not bend any more. The wire connection work becomes easy.

According to the terminal device for a circuit breaker of the present invention, at least one of the distal end of the side plate and the base end of the cover is bent in a state in which the side plate of the insulating plate is bent at a substantially right angle toward the lower terminal plate. Since one is elastically locked to at least one of the isolation wall and the lower terminal seat, after connecting the wire conductor to the lower terminal plate, the side piece of the insulating plate is bent at a substantially right angle in the direction of the lower terminal plate to form the lower terminal plate. At least one of the side piece and the cover piece of the insulating plate can be elastically engaged with at least one of the isolation wall and the lower terminal seat in a state where the terminal screw is covered with the side piece of the insulating plate. In addition to the effects described in 3, the insulation between the upper terminal plate and the lower terminal plate can be further enhanced.

According to the terminal device of the circuit breaker according to the fifth aspect, the side piece of the insulating plate is bent at a substantially right angle to at least one of the lower terminal seat adjacent to the lower terminal seat and the isolation wall adjacent to the lower terminal seat. Since a concave portion for locking at least one of the distal end of the side piece and the base end of the cover piece is formed, after connecting the wire conductor to the lower terminal plate, the side piece of the insulating plate is bent toward the lower terminal plate side to lower the lower terminal plate. 4. In a state where the terminal screw of (1) is covered with the side piece of the insulating plate, at least one of the tip of the side piece and the cover piece can be locked in the concave portion. While strengthening the insulation between the terminal board and the lower terminal board,
The side piece of the insulating plate can be firmly held in a state of being bent at substantially a right angle.

According to the terminal device for a circuit breaker of the present invention, the upper terminal plate is disposed at a predetermined distance from the wire insertion direction of the upper terminal seat, so that the insulating plate is disposed on the lower terminal plate side. Since the cover of the insulating plate does not come into contact with the upper terminal plate when flexing, in addition to the effects of claims 1 to 5, the cover of the insulating plate is less likely to rub against the upper terminal plate and break, Further, insulation between the upper terminal plate and the lower terminal plate can be enhanced.

According to the terminal device of the circuit breaker of the present invention, the upper terminal seat is provided with a lead portion extending from the front surface of the upper terminal plate in the wire insertion direction to the front surface of the lower terminal seat in the wire insertion direction. The side plate of the insulating plate is positioned between the lead-out portion and the lower terminal plate, so that even if the insulating plate attempts to bend toward the upper terminal plate, only the distal end side is bent. In addition to the effect, the insulating plate is less likely to break.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a circuit breaker showing one embodiment of the present invention.

FIG. 2 is an exploded perspective view of FIG.

FIG. 3 is a plan view of the circuit breaker of FIG. 1;

FIG. 4 is a bottom view of that of FIG.

FIG. 5 is an explanatory view showing a state where the electric wire of FIG. 3 is obliquely connected to the upper terminal plate from the lower terminal plate side.

FIG. 6 is a bottom view of that of FIG.

FIG. 7 is an explanatory view showing a state in which the insulating plate of FIG. 3 is locked in a concave portion.

FIG. 8 is a bottom view of that of FIG.

FIG. 9 is a plan view showing a conventional example.

[Explanation of symbols]

 2 First cover (left isolation wall) 3 Second cover (right isolation wall) 10 Upper terminal seat 20 Lower terminal seat 30 Upper terminal plate 40 Lower terminal plate 31, 41 Terminal screw 50 Insulation plate 51 Side piece 52 Cover piece

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model 63-63974 (JP, U) Japanese Utility Model 50-151375 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) H01R 9/22 H01H 71/08 H01H 73/20 H01R 4/38

Claims (7)

(57) [Claims] And 1. A lateral partition wall, and upper and lower terminal seat formed so as to be stepped with a wire insertion direction front side and lower as well as the wire insertion direction rear side and upper in the lateral isolation walls, in the terminal device of a circuit breaker having a upper and lower terminal plates disposed respectively, to upper and lower terminal seat having a connection screw for connecting the electric wire, the spacing of the left and right isolation walls, upper and lower Out of the terminal seat
And the upper and lower terminals longer than one width of
The width is shorter than the width of two seats in a row.
And the upper and lower terminal seats are
Are disposed at positions shifted from each other in the center from the direction, the base end is located on the inner side surface in the left-right direction of the lower terminal board, and the tip extends parallel to the isolation wall, and is connected to the upper terminal board. A side piece for isolating the electric wire and the lower terminal board, and a cover piece for connecting the base end to the upper terminal board side of the side piece and extending the tip to the lower terminal board side to isolate the upper terminal board and the lower terminal board, A terminal device for a circuit breaker, comprising an insulating plate having: 2. The method according to claim 1, wherein the insulating plate is formed of an elastic material, and a base end of the side piece is fixed, and a distal end of the side piece and a cover piece connected to the distal end are used as free ends. The terminal device for a circuit breaker according to claim 1, wherein: 3. The side end of the side plate of the insulating plate is bent in the direction of the lower terminal plate so that the end of the cover comes into contact with the isolation wall, and the end of the side plate is substantially inside the front surface of the upper terminal plate in the wire insertion direction. The terminal device for a circuit breaker according to claim 2, wherein the terminal device is located at an end. 4. In a state in which the side piece of the insulating plate is bent at a substantially right angle in the direction of the lower terminal board, at least one of the distal end of the side piece and the base end of the cover piece is at least one of the partition wall and the lower terminal seat. 4. The terminal device for a circuit breaker according to claim 2, wherein the terminal device is elastically locked. 5. At least one of a separating wall adjacent to the lower terminal seat and a lower terminal seat at least one of a distal end of the side plate and a base end of the cover in a state where the side piece of the insulating plate is bent at a substantially right angle. 4. The terminal device for a circuit breaker according to claim 2, wherein a concave portion for locking one side is formed. Wherein said upper terminal plate circuit breaker according to any one of claims 1 to 5, characterized in that disposed from the wire insertion direction of the upper terminals seat a predetermined distance far side
Vessel of terminal equipment. 7. A lead portion extending from the front surface of the upper terminal plate in the wire insertion direction to the front surface of the lower terminal seat in the wire insertion direction is provided on the upper terminal seat, and the insulating member is provided between the lead portion and the lower terminal plate. The terminal device for a circuit breaker according to any one of claims 1 to 6 , wherein a side piece of the plate is located.