Mutual inductor mechanism and circuit breaker

Abstract

The utility model relates to a mutual inductor mechanism and a circuit breaker, and the mechanism comprises a support which is provided with an installation groove at one end in a first direction; the current transformer is mounted in the mounting groove; the first circuit board comprises a circuit board main body, the circuit board main body is arranged at one end, deviating from the mounting groove, of the bracket in the first direction, and the current transformer is electrically connected with the control module through the circuit board main body; the two ends of the support in the second direction are each provided with an inserting groove, and the inserting grooves extend in the first direction. The first circuit board further comprises two first terminals which are connected to the two ends of the circuit board body respectively in the second direction, and the two first terminals extend away from the circuit board body in the first direction and are inserted into the two inserting grooves respectively. Wherein the first direction intersects with the second direction.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a mutual inductor mechanism and a circuit breaker. Background Art

[0002] A circuit breaker is a switch device that can close, carry and disconnect current under normal circuit conditions and can close, carry and disconnect current under abnormal circuit conditions within a specified time. A current transformer is often installed in a circuit breaker. The current transformer converts the large current on the primary side into a small current on the secondary side for measurement based on the principle of electromagnetic induction.

[0003] In traditional circuit breakers, current transformers are often directly electrically connected to control modules through wires to transmit data to the control modules. This is not only time-consuming to install, but also cluttered due to the limited space in the circuit breaker when the wires are filled. Some manufacturers also use circuit boards to achieve electrical connection between current transformers and control modules, but the various structures are assembled in a scattered manner and take up a large space. Utility Model Content

[0004] Based on this, it is necessary to provide a current transformer mechanism and a circuit breaker to address the above problems. The current transformer mechanism realizes the electrical connection between the current transformer and the control module through a circuit board. Each structure is compactly assembled and occupies a small space. The circuit breaker using the current transformer mechanism also occupies a small space.

[0005] A mutual inductor mechanism, comprising:

[0006] A bracket, with a mounting groove formed at one end in the first direction;

[0007] A current transformer is installed in the installation slot;

[0008] A first circuit board, comprising a circuit board body, the circuit board body being mounted on an end of the bracket away from the mounting slot in the first direction, the current transformer being electrically connected to the control module through the circuit board body;

[0009] Both ends of the bracket in the second direction have plugging slots, and the plugging slots extend along the first direction; the first circuit board also includes two first terminals respectively connected to the two ends of the circuit board body in the second direction, and the two first terminals extend away from the circuit board body along the first direction and are respectively plugged into the two plugging slots;

[0010] The first direction intersects with the second direction.

[0011] In one embodiment, one of the two first terminals is used to transmit a power signal, and the other is used to transmit a data signal.

[0012] In one embodiment, the mutual inductor mechanism further includes a second circuit board, which is arranged at one end of the bracket having the mounting groove in the first direction, and the second circuit board has two second terminals spaced apart in the second direction on a side facing the first circuit board;

[0013] The two first terminals are electrically connected to the two second terminals in a one-to-one correspondence.

[0014] In one embodiment, the bracket has at least two mounting grooves, and the mounting grooves are arranged along the second direction;

[0015] The number of the current transformers is at least two, and they are installed in the installation slots in a one-to-one correspondence; and / or

[0016] The current transformer includes a metering current transformer and a protective current transformer.

[0017] In one embodiment, the transformer mechanism further includes a wiring member, the wiring member extends along a third direction and is inserted into the current transformer; the first direction, the second direction and the third direction intersect each other;

[0018] The support has a transformer isolation plate, and the transformer isolation plate abuts against a surface of the wiring member facing the circuit board body to isolate the electric arc.

[0019] In one embodiment, the bracket includes a bracket body and two plug-in parts, the two plug-in parts are arranged at intervals along the second direction, one end of each plug-in part is connected to the bracket body, and the other end extends away from the bracket body along the third direction; the first direction, the second direction and the third direction intersect each other;

[0020] The mounting groove is arranged on the bracket body, each plug-in part is provided with a plug-in groove, the first circuit board is adapted to the shape of the bracket so that the circuit board body is attached to the bracket body, and the first terminal is plugged into the plug-in groove of the plug-in part.

[0021] In one embodiment, the circuit board body has two third terminals spaced apart on one side away from the bracket in the first direction, and the two third terminals are used to be electrically connected to the control module;

[0022] One of the two third terminals is used for transmitting a power signal, and the other is used for transmitting a data signal.

[0023] In one embodiment, the circuit board body includes a first sub-board and a second sub-board which are separately arranged, the first sub-board is attached to the bracket, the two first terminals are respectively connected to the two ends of the first sub-board along the second direction, and the second sub-board is arranged on a side of the first sub-board away from the bracket;

[0024] The two third terminals are both arranged on a side of the second sub-board facing away from the first sub-board.

[0025] In one embodiment, two fourth terminals and a fifth terminal are respectively provided on the sides of the first sub-board and the second sub-board facing each other, and the fourth terminals and the fifth terminals are electrically connected one by one; one of the corresponding fourth terminals and the fifth terminals is used to transmit power signals, and the other corresponding fourth terminal and the fifth terminal is used to transmit data signals.

[0026] In one embodiment, a limiting column is protruded on the bracket along the first direction, and the limiting column passes through the first sub-board and the second sub-board;

[0027] The mutual inductor mechanism further comprises a fixing part, wherein the fixing part is passed through the bracket to fix the first sub-board to the bracket, and the fixing part is passed through the limiting column to fix the second sub-board to the limiting column.

[0028] A circuit breaker comprises the above-mentioned mutual inductor mechanism.

[0029] In the above-mentioned transformer mechanism and circuit breaker, the current transformer is electrically connected to the control module through the first circuit board, avoiding the direct electrical connection between the current transformer and the control module through the wire, and the structural installation is time-saving and labor-saving, and the interior of the circuit breaker is regular due to the reduction of the setting of the wires in the circuit breaker. At the same time, during installation, it is only necessary to install the current transformer in the installation slot of the bracket, install the first circuit board to the side of the bracket away from the installation slot in the first direction, and plug the first terminal into the plug-in slot. The installation is convenient, and the current transformer and the first circuit board are all installed on the bracket in a centralized manner, occupying a small space, thereby reducing the volume of the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A structural diagram of a mutual inductor mechanism provided in an embodiment of the present application;

[0031] Figure 2 for Figure 1 A structural diagram of a bracket of a mutual inductor mechanism shown in ;

[0032] Figure 3 for Figure 1 An exploded view of the mutual inductor mechanism shown in ;

[0033] Figure 4 A structural diagram of a mutual inductor mechanism provided in another embodiment of the present application ( Figure 4 The first circuit board of the transformer mechanism is electrically connected to the control module);

[0034] Figure 5 for Figure 4 A structural diagram of another perspective of the mutual inductor mechanism shown in ;

[0035] Figure 6 for Figure 1 Another exploded view of the transformer mechanism shown in .

[0036] Description of reference numerals:

[0037] 100. Transformer mechanism; 10. Bracket; 11. Mounting slot; 12. Plug-in slot; 13. Bracket body; 14. Plug-in part; 15. Transformer isolation plate; 20. Current transformer; 21. Current transformer for measurement; 22. Current transformer for protection; 30. First circuit board; 31. Circuit board body; 32. First terminal; 33. Third terminal; 34. First sub-board; 35. Second sub-board; 36. Fourth terminal; 37. Fifth terminal; 40. Second circuit board; 41. Second terminal; 42. Conductive hole; 50. Temperature sensor; 60. Wiring member; 70. Limiting column; 200. Control module. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0043] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0044] See also Figure 1 An embodiment of the present application provides a circuit breaker, which includes a transformer mechanism 100. The transformer mechanism 100 includes a bracket 10, a current transformer 20 and a first circuit board 30.

[0045] See also Figure 1 and Figure 2 The bracket 10 has a mounting groove 11 formed at one end in the first direction, and the current transformer 20 is mounted in the mounting groove 11. Figure 3The first circuit board 30 includes a circuit board body 31, which is mounted on the end of the bracket 10 away from the mounting groove 11 in the first direction. Specifically, the circuit board body 31 is in contact with the end surface of the bracket 10 in the first direction where the mounting groove 11 is not provided. The bracket 10 has plug-in grooves 12 at both ends in the second direction, and the two plug-in grooves 12 extend along the first direction. The first circuit board 30 also includes two first terminals 32 respectively connected to the two ends of the circuit board body 31 in the second direction, and the two first terminals 32 extend away from the circuit board body 31 in the first direction and are respectively plugged into the two plug-in grooves 12.

[0046] The first direction intersects with the second direction. Specifically, the first direction is perpendicular to the second direction. Figure 1 The Z direction is the first direction, and the Y direction is the second direction. In some specific implementations, the circuit breaker is a rectangular parallelepiped structure or a quasi-rectangular parallelepiped structure, the first direction is the height direction of the circuit breaker, and the second direction is the width direction of the circuit breaker. It can be understood that in some other embodiments, the specific shape of the circuit breaker is not limited, and the first direction and the second direction are not limited.

[0047] For further information, see Figure 4 The circuit breaker also includes a control module 200, and the current transformer 20 is electrically connected to the control module 200 through the circuit board body 31. Among them, one of the two first terminals 32 is used to transmit a power signal, and the other is used to transmit a data signal. Since the first circuit board 30 is electrically connected to the control module 200 through the circuit board body 31, one of the first terminals 32 can transmit the power signal to the control module 200 through the circuit board body 31, so that the control module 200 is powered, and the other first terminal 32 can transmit the external data signal to the control module 200 through the circuit board body 31, and the control module 200 controls the data signal. Since the current transformer 20 is electrically connected to the control module 200 through the circuit board body 31, the data signal of the current transformer is also transmitted to the control module 200 through the circuit board body 31. Optionally, the data signal includes a temperature signal, a current signal, etc.

[0048] It should be noted that in some other embodiments, the type of the signal transmitted by the first terminal 32 is not limited.

[0049] In the transformer mechanism 100 of the present application, the current transformer 20 is electrically connected to the control module 200 through the first circuit board 30, avoiding the direct electrical connection between the current transformer 20 and the control module 200 through the wire, and the structural installation is time-saving and labor-saving, and the internal structure of the circuit breaker is regular due to the reduction of the setting of the wires in the circuit breaker. At the same time, when installing the transformer mechanism 100 of the present application, it is only necessary to install the current transformer 20 in the installation slot 11 of the bracket 10, install the first circuit board 30 to the side of the bracket 10 away from the installation slot 11 in the first direction, and plug the first terminal 32 into the plug-in slot 12. The installation is convenient, and the current transformer 20 and the first circuit board 30 are all centrally installed on the bracket 10, that is, the bracket 10 integrates large current collection and transmission together, occupies a small space, and thus reduces the volume of the circuit breaker.

[0050] Optionally, continue to Figure 2 The bracket 10 includes a bracket body 13 and two plug-in parts 14. The two plug-in parts 14 are arranged at intervals along the second direction, one end of each plug-in part 14 is connected to the bracket body 13, and the other end extends away from the bracket body 13 along the third direction. The first direction, the second direction and the third direction intersect each other. Specifically, the first direction, the second direction and the third direction are perpendicular to each other. Figure 1 , Figure 1 The X direction is the third direction. When the circuit breaker is a rectangular parallelepiped structure, the third direction is the length direction of the circuit breaker. The mounting slot 11 is provided on the bracket body 13, and each plug-in portion 14 is provided with a plug-in slot 12. The first circuit board 30 is adapted to the shape of the bracket 10, so that the circuit board body 31 fits the bracket body 13, and the first terminal 32 is plugged into the plug-in slot 12 of the plug-in portion 14.

[0051] Since one end of the plug-in portion 14 is connected to the bracket body 13 and the other end extends away from the bracket body 13 along the third direction, and the first circuit board 30 is conformally adapted to the bracket 10, after the first terminal 32 is inserted into the plug-in slot 12, the first terminal 32 and the current transformer 20 are offset in the first direction, so that the first terminal 32 can be connected to other structures (such as the second circuit board 40 (described below)).

[0052] It is understandable that in other embodiments, the bracket 10 may be arranged in other ways, as long as the arrangement method for installing the current transformer 20 and the first circuit board 30 can be achieved.

[0053] In some embodiments, see Figure 4 and Figure 5The mutual inductor mechanism 100 further includes a second circuit board 40, which is arranged at one end of the bracket 10 having the mounting groove 11 in the first direction, and the second circuit board 40 has two second terminals 41 on the side facing the first circuit board 30. The two second terminals 41 are spaced apart in the second direction, and the two second terminals 41 are plugged in and matched with the two first terminals 32 in a one-to-one correspondence to achieve electrical connection. In this way, the two second terminals 41 can respectively transmit the power signal and the data signal to the two first terminals 32, and the two first terminals 32 then transmit the power signal and the data signal to the control module 200 through the circuit board body 31.

[0054] Optionally, continue to Figure 4 , a conductive hole 42 is provided on the second circuit board 40, and a conductive column is inserted into the conductive hole 42. The conductive column can be electrically connected to the static contact of the circuit breaker to draw power from the static contact. When the second circuit board 40 draws power, one of the second terminals 41 can transmit the power signal to the first terminal 32. Furthermore, a temperature sensor 50 is also provided on the second circuit board 40, and the temperature sensor 50 is used to detect the temperature of the static contact and the moving contact. After the temperature sensor 50 detects the temperature of the contact, the other second terminal 41 can transmit the temperature signal to the other first terminal 32. Since the second circuit board 40 can draw power through the conductive column and detect the temperature through the temperature sensor 50, it can be seen that the second circuit board 40 integrates the temperature detection and power drawing functions.

[0055] In some embodiments, see Figure 2 The bracket body 13 has at least two mounting slots 11, and the mounting slots 11 are arranged in sequence along the second direction. The number of current transformers 20 is at least two, and they are installed in the mounting slots 11 one by one. In this way, multiple current transformers 20 cooperate with each other to detect the current in the circuit breaker, and each current transformer 20 is installed in the corresponding mounting slot 11 without affecting each other.

[0056] Continue reading Figure 5 Each current transformer 20 includes a metering current transformer 21 and a protective current transformer 22. The metering current transformer 21 provides the control module 200 with the current information of the power grid within the normal working current range; the protective current transformer 22 provides the control module 200 with the power grid fault current information of the power grid under the power grid fault state.

[0057] The metering current transformer 21 and the protective current transformer 22 can be connected to the circuit board body 31 through leads. In some specific embodiments, the metering current transformer 21 and the protective current transformer 22 can be electrically connected to the circuit board body 31 through a flexible wire or directly contacted with the circuit board body 31.

[0058] Furthermore, the transformer mechanism 100 further includes a wiring member 60, which extends along the third direction and is inserted into the current transformer 20. The bracket body 13 has a transformer isolation plate 15, and the transformer isolation plate 15 abuts against the surface of the wiring member 60 facing the circuit board body 31 to isolate the arc. By providing the wiring member 60, the circuit breaker can be connected to the external power supply; at the same time, the wiring member 60 can cooperate with the transformer isolation plate 15 to isolate the arc in the circuit breaker.

[0059] In some embodiments, see Figure 6 , the circuit board body 31 has two third terminals 33 spaced apart on one side away from the bracket 10 in the first direction, and the two third terminals 33 are used to be plugged into the control module 200 to achieve electrical connection. Among them, one of the two third terminals 33 is used to transmit power signals, and the other is used to transmit data signals. In this way, after the first circuit board 30 is powered, the power signal is transmitted to the control module 200 through a second terminal 41, a first terminal 32, the circuit board body 31 and a third terminal 33, so that the control module 200 is powered; the data signal is transmitted to the control module 200 through another second terminal 41, another first terminal 32, the circuit board body 31 and another third terminal 33, so that the control module 200 obtains the data signal.

[0060] Continue reading Figure 6 The circuit board body 31 includes a first sub-board 34 and a second sub-board 35 which are separately arranged. The first sub-board 34 is fitted with the bracket 10, and the two first terminals 32 are respectively connected to the two ends of the first sub-board 34 in the second direction, and the second sub-board 35 is arranged on the side of the first sub-board 34 away from the bracket 10. Specifically, the first sub-board 34 and the two first terminals 32 are integrally formed. Two fourth terminals 36 are arranged on the side of the first sub-board 34 facing the second sub-board 35, and two fifth terminals 37 are arranged on the side of the second sub-board 35 facing the first sub-board 34. The fourth terminals 36 and the fifth terminals 37 are plugged in one by one to achieve electrical connection. One of the corresponding fourth terminals 36 and the fifth terminals 37 is used to transmit power signals, and the other corresponding fourth terminals 36 and the fifth terminals 37 is used to transmit data signals. Two third terminals 33 are arranged on the side of the second sub-board 35 facing away from the first sub-board 34.

[0061] The above arrangement facilitates the processing and manufacturing of the first circuit board 30 ; at the same time, the circuit board body 31 is divided into a first sub-board 34 and a second sub-board 35 , and a storage module can also be provided on the second sub-board 35 to store the data of the circuit breaker.

[0062] Of course, in some other embodiments, the first circuit board 30 may also be an integrated structure, which is not limited here.

[0063] Optionally, continue to Figure 1The bracket body 13 is provided with a limiting column 70 protruding along the first direction, and the limiting column 70 is penetrated through the first sub-board 34 and the second sub-board 35. The mutual inductor mechanism 100 also includes a fixing member, which is penetrated through the bracket 10 to fix the first sub-board 34 with the bracket body 13, and the fixing member is penetrated through the limiting column 70 to fix the second sub-board 35 with the limiting column 70. In this way, the first circuit board 30 is fixed on the bracket body 13 to prevent the first circuit board 30 from shifting. Optionally, the fixing member is a fixing screw.

[0064] Furthermore, the bracket body 13 is provided with a plurality of limiting posts 70, specifically four, the four limiting posts 70 are arranged to form a rectangle, and all the limiting posts 70 are arranged through the first sub-plate 34 and the second sub-plate 35, so as to ensure the limiting effect on the first sub-plate 34 and the second sub-plate 35. It can be understood that in some other embodiments, the number of limiting posts 70 is not limited, such as the limiting posts 70 can also be one, two, three or more than four.

[0065] Another embodiment of the present application further provides a mutual inductor mechanism 100 included in the above-mentioned circuit breaker. Since the above-mentioned circuit breaker has beneficial effects, the mutual inductor mechanism 100 belonging to the circuit breaker has the same beneficial effects, which will not be described in detail here.

[0066] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A mutual inductor mechanism, characterized in that: include: A bracket (10) having a mounting groove (11) formed at one end in a first direction; A current transformer (20) is installed in the installation groove (11); A first circuit board (30), comprising a circuit board body (31), the circuit board body (31) being mounted on an end of the bracket (10) away from the mounting groove (11) in the first direction, and the current transformer (20) being electrically connected to the control module (200) via the circuit board body (31); The bracket (10) has plug-in slots (12) at both ends in the second direction, and the plug-in slots (12) extend along the first direction; the first circuit board (30) also includes two first terminals (32) respectively connected to both ends of the circuit board body (31) in the second direction, and the two first terminals (32) extend away from the circuit board body (31) in the first direction and are respectively plugged into the two plug-in slots (12); The first direction intersects with the second direction.

2. The mutual inductor mechanism according to claim 1, characterized in that: One of the two first terminals (32) is used to transmit a power signal, and the other is used to transmit a data signal.

3. The mutual inductor mechanism according to claim 1, characterized in that: The mutual inductor mechanism further comprises a second circuit board (40), the second circuit board (40) being arranged at one end of the bracket (10) having the mounting groove (11) in the first direction, and the second circuit board (40) having two second terminals (41) spaced apart in the second direction on a side facing the first circuit board (30); The two first terminals (32) are electrically connected to the two second terminals (41) in a one-to-one correspondence.

4. The mutual inductor mechanism according to claim 1, characterized in that: The bracket (10) has at least two mounting grooves (11), and the mounting grooves (11) are arranged along the second direction; The number of the current transformers (20) is at least two, and they are installed in the installation slots (11) in a one-to-one correspondence; and / or The current transformer (20) comprises a metering current transformer (21) and a protective current transformer (22).

5. The mutual inductor mechanism according to claim 1, characterized in that: The transformer mechanism further comprises a wiring member (60), wherein the wiring member (60) extends along a third direction and is inserted into the current transformer (20); the first direction, the second direction and the third direction intersect each other; The support (10) has a transformer isolation plate (15), and the transformer isolation plate (15) abuts against a surface of the wiring member (60) facing the circuit board body (31) to isolate an electric arc.

6. The mutual inductor mechanism according to claim 1, characterized in that: The bracket (10) comprises a bracket body (13) and two plug-in parts (14), wherein the two plug-in parts (14) are arranged at intervals along the second direction, one end of each plug-in part (14) is connected to the bracket body (13), and the other end extends away from the bracket body (13) along a third direction; the first direction, the second direction and the third direction intersect each other; The mounting groove (11) is arranged on the bracket body (13), each of the plug-in parts (14) is provided with a plug-in groove (12), the first circuit board (30) is adapted to the shape of the bracket (10), so that the circuit board body (31) and the bracket body (13) are attached to each other, and the first terminal (32) is plugged into the plug-in groove (12) of the plug-in part (14).

7. The mutual inductor mechanism according to claim 1, characterized in that: The circuit board body (31) has two third terminals (33) arranged at intervals on a side facing away from the bracket (10) in the first direction, and the two third terminals (33) are used to be electrically connected to the control module (200); One of the two third terminals (33) is used to transmit a power signal, and the other is used to transmit a data signal.

8. The mutual inductor mechanism according to claim 7, characterized in that: The circuit board body (31) comprises a first sub-board (34) and a second sub-board (35) which are separately arranged, the first sub-board (34) being attached to the bracket (10), the two first terminals (32) being respectively connected to the two ends of the first sub-board (34) along the second direction, and the second sub-board (35) being arranged on a side of the first sub-board (34) away from the bracket (10); The two third terminals (33) are both arranged on a side of the second sub-board (35) facing away from the first sub-board (34).

9. The mutual inductor mechanism according to claim 8, characterized in that: The first sub-board (34) and the second sub-board (35) are respectively provided with two fourth terminals (36) and a fifth terminal (37) on the sides facing each other, and the fourth terminals (36) and the fifth terminals (37) are electrically connected in a one-to-one correspondence; one of the correspondingly arranged fourth terminals (36) and the fifth terminals (37) is used to transmit power signals, and the other correspondingly arranged fourth terminals (36) and the fifth terminals (37) are used to transmit data signals.

10. The mutual inductor mechanism according to claim 8, characterized in that: A limiting column (70) is protruded from the bracket (10) along the first direction, and the limiting column (70) is passed through the first sub-plate (34) and the second sub-plate (35); The mutual inductor mechanism also includes a fixing member, which is inserted through the bracket (10) to fix the first sub-board (34) to the bracket (10), and the fixing member is inserted through the limiting column (70) to fix the second sub-board (35) to the limiting column (70).

11. A circuit breaker, characterized in that: The invention comprises a mutual inductor mechanism as claimed in any one of claims 1 to 10.

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