CN219811454U - Drawer seat and circuit breaker - Google Patents

Abstract

The application provides a drawer seat and a circuit breaker, and belongs to the technical field of electrical equipment. The circuit breaker comprises a plurality of pairs of first fixed contacts and first movable contacts. The drawer base includes: the first base, the first conductive component, the second conductive component, the first adjusting piece and the second adjusting piece are all installed on the first base. One first conductive component is electrically connected with one or more first fixed contacts, and one second conductive component is electrically connected with one or more first movable contacts. A first adjusting piece is connected between two adjacent first conductive assemblies, and a second adjusting piece is connected between two adjacent second conductive assemblies. The first adjusting piece is used for insulating or conducting two adjacent first conductive assemblies, and the second adjusting piece is used for insulating or conducting two adjacent second conductive assemblies. The application can make the first base correspond to one phase of the circuit breaker and also can make the first base correspond to multiple phases of the circuit breaker, thereby improving the universality of the drawer base comprising the first base.

Description

Drawer seat and circuit breaker

Technical Field

The application relates to the technical field of electrical equipment, in particular to a drawer seat and a circuit breaker.

Background

A circuit breaker refers to a switching device capable of closing, carrying and opening a current under normal circuit conditions and closing, carrying and opening a current under abnormal circuit conditions within a prescribed time. The circuit breaker is mainly divided into a fixed circuit breaker, a drawer type circuit breaker and the like according to the installation mode, wherein the drawer type circuit breaker is favored by people in the technical field of power supply because the drawer type circuit breaker has the advantages of easy maintenance, high safety, high reliability and high economy.

The drawer type circuit breaker comprises a circuit breaker body and a drawer seat. The drawer seat is generally directly fixed in the switch cabinet and is connected with an external power supply through a busbar. The breaker body can be connected and disconnected with an external power supply by operating the drawer seat to swing in and out.

However, the structural design of the drawer seat in the related art has an unreasonable portion, so that the versatility of the drawer seat is not high.

Disclosure of Invention

In view of the above problems, embodiments of the present utility model provide a drawer seat and a circuit breaker, which can improve the versatility of the drawer seat.

In a first aspect of an embodiment of the present utility model, a drawer base is provided, and the drawer base is applied to a circuit breaker, where the circuit breaker includes a plurality of pairs of first fixed contacts and first moving contacts. The drawer base includes: the first base, the first conductive component, the second conductive component, the first adjusting piece and the second adjusting piece are all installed on the first base. One second barrier 252 first conductive element is electrically connected to one or more first stationary contacts, and one second barrier 252 second conductive element is electrically connected to one or more first movable contacts. A first adjusting piece is connected between two adjacent first conductive assemblies, a second adjusting piece is connected between two adjacent second conductive assemblies, the first adjusting piece is used for insulating or conducting the two adjacent first conductive assemblies, and the second adjusting piece is used for insulating or conducting the two adjacent second conductive assemblies.

In this embodiment, the connection relationship between two adjacent first conductive components can be adjusted to be in insulation connection or conduction connection by the first adjusting member, and the connection relationship between two adjacent second conductive components can be adjusted to be in insulation connection or conduction connection by the second adjusting member. The phase number of the circuit breaker corresponding to the first base is convenient to adjust, so that the first base can correspond to one phase of the circuit breaker and also can correspond to multiple phases of the circuit breaker, and the universality of the drawer base comprising the first base is improved.

In some embodiments, the first and second conditioning elements are each made of an electrically conductive material; alternatively, the first adjusting member and the second adjusting member are both made of an insulating material.

Through the scheme, when the first adjusting piece and the second adjusting piece are made of conductive materials, all the first conductive components in the first base are conducted, and all the second conductive components are conducted, so that the first base can correspond to one phase of the circuit breaker. When the first adjusting piece and the second adjusting piece are made of insulating materials, all the first conductive components in the first base are connected in an insulating mode, and all the second conductive components are connected in an insulating mode, so that the second base can correspond to two phases, three phases or four phases of the circuit breaker.

In some embodiments, when the number of the first adjusting members and the second adjusting members is plural, some of the first adjusting members of the plurality of first adjusting members are made of an insulating material, and the remaining first adjusting members are made of a conductive material. Some of the second regulating members are made of insulating material, and the rest of the second regulating members are made of conductive material. Wherein, the first insulating adjusting piece and the second insulating adjusting piece are the same in number and opposite in position.

In this embodiment, by setting a part of the first adjusting members and the second adjusting member opposite to the part of the first adjusting members to be made of insulating materials, and setting the remaining first adjusting members and the second adjusting members to be made of conductive materials, the first base can correspond to two phases, three phases or four phases of the circuit breaker, and versatility of the drawer base including the first base is improved.

In some embodiments, a first spacer is disposed in the first base of the second spacer 252, one side of the first adjusting member of the second spacer 252 is fixed on the first spacer of the second spacer 252, and the other side of the first adjusting member of the second spacer 252 is connected to the first conductive components of two adjacent second spacers 252. And/or, a second baffle is arranged in the first base of the second baffle 252, one side of a second adjusting piece of the second baffle 252 is fixed on the second baffle of the second baffle 252, and the other side of the second adjusting piece of the second baffle 252 is connected with the second conductive components of two adjacent second baffles 252.

By the aid of the scheme, the first adjusting piece and the second adjusting piece can be mounted in the first base.

In some embodiments, when the first base of the second spacer 252 is provided with the first spacer of the second spacer 252, the first adjusting member is integrally formed with the first spacer, and a side of the first adjusting member facing the first conductive component is provided with the first processing mark. And/or, when the second spacer 252 is arranged in the first base of the second spacer 252, the second adjusting piece and the second spacer are integrally formed, and a second processing mark is arranged on one side of the second adjusting piece, which faces the second conductive component.

In some embodiments, the circuit breaker includes a second stationary contact and a second movable contact, and the drawer base further includes: the second base, the third conductive component and the fourth conductive component are detachably connected with the first base, and the third conductive component and the fourth conductive component are mounted on the second base. The third conductive component is electrically connected with the second static contact, and the fourth conductive component is electrically connected with the second moving contact.

Through the scheme, the second base is detachably connected with the first base on the basis that the drawer base comprises the first base. When the third conductive component positioned in the second base is electrically connected with the second static contact and the fourth conductive component is electrically connected with the second moving contact, the number of phases of the circuit breaker comprising the drawer base can be conveniently expanded, the breaking capacity of the circuit breaker is improved, and the application range of the circuit breaker is enlarged.

In some embodiments, the number of second stationary contacts and second movable contacts is M pairs, M being an integer greater than or equal to 3. And the third conductive component and the fourth conductive component connect the M pairs of second fixed contacts and the second movable contacts in parallel.

Through the scheme, at least 3 contact systems corresponding to the same phase of the circuit breaker can be connected in parallel, and compared with the prior art, the number of the contact systems which can be connected in parallel in one phase is increased, so that the current carrying capacity of the circuit breaker comprising the drawer base can be improved, and the current application range of the circuit breaker is enlarged.

In some embodiments, the first and second conductive assemblies are multiple in number, and the drawer housing includes first and second intermediate conductive members. A first middle conductive member is electrically connected between two adjacent first conductive components, and a second middle conductive component is electrically connected between two adjacent second conductive components.

In some embodiments, the circuit breaker further comprises a third stationary contact and a third moving contact, and the drawer base further comprises: the third base, the fifth conductive component and the sixth conductive component are detachably connected with the first base, the third base and the second base are located on two opposite sides of the first base, and the fifth conductive component and the sixth conductive component are mounted on the third base. The fifth conductive component is electrically connected with the third static contact, and the sixth conductive component is electrically connected with the third moving contact.

Through the scheme, the third base is detachably connected with the first base on the basis that the drawer base comprises the first base and the second base. When the fifth conductive component positioned in the third base is electrically connected with the third static contact and the sixth conductive component is electrically connected with the third moving contact, the number of phases of the circuit breaker comprising the drawer base can be further expanded, the breaking capacity of the circuit breaker is improved, and the application range of the circuit breaker is enlarged.

In a second aspect of embodiments of the present application, a circuit breaker is provided that includes the drawer mount of the first aspect.

The foregoing description is only an overview of the technical solutions of the embodiments of the present application, and may be implemented according to the content of the specification, so that the technical means of the embodiments of the present application can be more clearly understood, and the following specific embodiments of the present application are given for clarity and understanding.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is an exploded view of a circuit breaker according to an embodiment of the present application.

Fig. 2 is an exploded view of a small unit in a drawer base corresponding to a phase of a circuit breaker according to an embodiment of the present application.

Fig. 3 is an exploded view of a small unit in a drawer base according to an embodiment of the present application when the small unit corresponds to two phases of a circuit breaker.

Fig. 4 is a schematic view of a combined structure of the second base, the first adjusting member and the second adjusting member.

Fig. 5 is a schematic view of another combined structure of the second base, the first adjusting member, and the second adjusting member.

Fig. 6 is a schematic structural view of the first base.

Fig. 7 is a schematic structural view of the first base when the insulating first adjusting member and the third spacer are integrally formed and the insulating second adjusting member and the fourth spacer are integrally formed.

Fig. 8 is a schematic view of the structure of the first base after the insulating first adjusting member and the insulating second adjusting member are removed.

Fig. 9 is a schematic structural view of the insulating first regulating member.

Fig. 10 is an exploded view of another small unit in a drawer base according to an embodiment of the present application.

Fig. 11 is an exploded view of yet another small unit in a drawer base according to an embodiment of the present application.

Fig. 12 is a schematic structural view of a drawer seat according to an embodiment of the present application.

Reference numerals illustrate:

A. a circuit breaker; 1. a circuit breaker body; 11. a first stationary contact; 12. a first moving contact; 13. a second stationary contact; 14. a second moving contact; 15. a third stationary contact; 16. a third moving contact; 2. a drawer seat; 21. a first conductive component; 211. a first bus bar; 212. a first bundle clamp; 22. a second conductive component; 221. a second bus bar; 222. a second bundle chuck; 23. a first adjustment member; 24. a second adjusting member; 25. a first base; 251. a first barrier; 252. a second barrier; 26. a second base; 27. a third conductive component; 28. a fourth conductive component; 261. a third barrier; 262. a fourth barrier; 29. a first intermediate conductive member; 30. a second intermediate conductive member; x1, a first processing mark; x2, a second processing mark; c1, a first labyrinth groove; c2, a second labyrinth groove; 31. a third base; 32. a fifth conductive component; 33. and a sixth conductive component.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the applications herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the application and in the description of the drawings are intended to cover a non-exclusive inclusion.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of the phrase "an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The directional terms appearing in the following description are all directions shown in the drawings, and do not limit the specific structures of the drawer base and the circuit breaker of the present application. For example, in the description of the present application, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate an azimuth or a positional relationship based on that shown in the drawings, and are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present application.

Furthermore, expressions of directions of indication such as the arrangement directions of the first regulating member and the second regulating member for explaining the operations and the construction of the respective members of the drawer base and the circuit breaker of the present embodiment are not absolute but relative, and although these indications are appropriate when the respective members of the drawer base and the circuit breaker are in the positions shown in the drawings, these directions should be interpreted differently when these positions are changed to correspond to the changes.

Furthermore, the terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not for describing a particular sequential order, and may be used to improve one or more of these features either explicitly or implicitly.

In the description of the present application, unless otherwise indicated, the meaning of "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two).

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, e.g., as a "connected" or "coupled" of a mechanical structure may refer to a physical connection, e.g., as a fixed connection, e.g., via a fastener, such as a screw, bolt, or other fastener; the physical connection may also be a detachable connection, such as a snap-fit or snap-fit connection; the physical connection may also be an integral connection, such as a welded, glued or integrally formed connection. "connected" or "connected" of circuit structures may refer to physical connection, electrical connection or signal connection, for example, direct connection, i.e. physical connection, or indirect connection through at least one element in the middle, so long as circuit communication is achieved, or internal communication between two elements; signal connection may refer to signal connection through a medium such as radio waves, in addition to signal connection through a circuit. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

The drawer type circuit breaker (hereinafter referred to as a circuit breaker) includes a circuit breaker body and a drawer base, and the circuit breaker body is installed in the drawer base and can be moved into or out of the drawer base. The drawer seat is generally connected with an external power supply through a busbar, and when the circuit breaker body moves into the drawer seat, the circuit breaker body can be connected with the external power supply through the drawer seat; when the breaker body is removed from the drawer base, the breaker body may be disconnected from the external power source.

Common circuit breakers include single pole circuit breakers, two pole circuit breakers, three pole circuit breakers, and four pole circuit breakers. The three-pole circuit breaker comprises three phases of A phase, B phase (also called intermediate phase) and C phase, and the four-pole circuit breaker comprises four phases of N phase (also called neutral phase), A phase, B phase and C phase.

In the related art, the base in the drawer seat is of an integrated structure, and the insulation or conduction relation between the conductive components in the base is not adjustable, so that the base can only fixedly correspond to one or more phases of the circuit breaker. When the circuit breaker body with the number of phases adjusted needs to be installed, the proper drawer seat needs to be replaced again. Therefore, the universality of the drawer seat is low, and various types of drawer seats are manufactured by adopting various dies so as to meet the requirements of the circuit breaker body on different types of drawer seats.

In view of the above, the embodiment of the application provides a drawer seat, wherein the connection relationship between two adjacent first conductive components can be adjusted to be in insulation connection or conduction connection by the first adjusting member, and the connection relationship between two adjacent second conductive components can be adjusted to be in insulation connection or conduction connection by the second adjusting member.

In order to make the person skilled in the art better understand the solution of the present application, the technical solution of the embodiment of the present application will be clearly and completely described below with reference to the accompanying drawings.

Fig. 1 is an exploded view of a circuit breaker a according to an embodiment of the present application, the circuit breaker a includes a circuit breaker body 1 and a drawer base 2. The breaker body 1 is mounted to the drawer base 2 and is movable relative to the drawer base 2.

The structure of the breaker body 1 may refer to the related art, and will not be described herein. In addition, the structure of the drawer housing 2 will be described in detail in the following embodiments.

As shown in fig. 1, the circuit breaker a includes a plurality of pairs of first stationary contacts 11 and first moving contacts 12. In fig. 1, the labeling position of the first fixed contact 11 corresponds to the connection terminal of the first fixed contact 11, and the labeling position of the first moving contact 12 corresponds to the connection terminal of the first moving contact 12. Fig. 2 is an exploded view of one small unit in the drawer base 2 corresponding to one phase of the circuit breaker a according to the embodiment of the present application, and fig. 3 is an exploded view of one small unit in the drawer base 2 corresponding to two phases of the circuit breaker a according to the embodiment of the present application, as shown in fig. 2 and 3, the drawer base 2 corresponding to the small unit includes a first base 25, a first conductive component 21, a second conductive component 22, a first adjusting member 23 and a second adjusting member 24. The first conductive member 21, the second conductive member 22, the first regulating member 23, and the second regulating member 24 are mounted to the first base 25.

Referring to fig. 1 to 3, a first conductive member 21 is electrically connected to one or more first stationary contacts 11, and a second conductive member 22 is electrically connected to one or more first movable contacts 12. A first adjusting member 23 is connected between two adjacent first conductive components 21, a second adjusting member 24 is connected between two adjacent second conductive components 22, the first adjusting member 23 is used for insulating or conducting two adjacent first conductive components 21, and the second adjusting member 24 is used for insulating or conducting two adjacent second conductive components 22.

A pair of first stationary contacts 11 and first moving contacts 12 corresponds to one first contact system in one phase of the circuit breaker a. Each first contact system controls one conductive loop individually. Wherein a first contact system includes a first input and a first output. The first input end may be the end of the first fixed contact 11, and the first output end may be the end of the first moving contact 12. Alternatively, the first input end may be the end where the first moving contact 12 is located, and the first output end may be the end where the first static contact 11 is located, which is not limited in the embodiment of the present application.

For simplicity of description, the technical solution of the present application will be explained in detail only by taking the first input end being the end of the first fixed contact 11 and the first output end being the end of the first moving contact 12 as an example, but this is not limited to the technical solution of the present application.

Accordingly, assuming that the first input terminal is the terminal of the first stationary contact 11, the first conductive component 21 is used for connection with the input terminal of the external power source. The first conductive member 21 is electrically connected to the plurality of first stationary contacts 11, and corresponds to a first input terminal of the plurality of first contact systems, and is connected to an input terminal of an external power source through the first conductive member 21.

Similarly, assuming that the first output terminal is the terminal of the first moving contact 12, the second conductive element 22 is used for connecting with the output terminal of the external power source. The second conductive element 22 is electrically connected to the plurality of first movable contacts 12, and corresponds to a first output terminal of the plurality of first contact systems, and is connected to an output terminal of an external power source through the second conductive element 22.

In the case where one first conductive member 21 is electrically connected to one or more first stationary contacts 11, the first conductive members 21 to which each first stationary contact 11 is electrically connected may be different from each other, for example; alternatively, part of the first stationary contacts 11 may be electrically connected to the same first conductive member 21, and the remaining part of the first stationary contacts 11 may be electrically connected to different first conductive members 21, which is not limited in the embodiment of the present application.

As shown in fig. 2 and 3, the first conductive assembly 21 may include a first bus bar 211 having conductive capability and a first bundle clamp 212. The number of first bus bars 211 corresponds to the number of first conductive members 21. The number of groups of first bundle grippers 212 always corresponds to the number of first stationary contacts 11, regardless of the number of first conductive assemblies 21. Wherein a set of first bundle grippers 212 comprises one or more first bundle grippers 212.

In assembly, one end of the first bundle-shaped chuck 212 can be plugged with the first busbar 211 opposite to the first bundle-shaped chuck 212, and the other end of the first bundle-shaped chuck 212 can be plugged with the connecting terminal of the corresponding first fixed contact 11, so that the plurality of first fixed contacts 11 can be conducted with the plurality of first conductive assemblies 21.

Similarly, in the case where one second conductive member 22 is electrically connected to one or more first movable contacts 12, the second conductive members 22 to which each first movable contact 12 is electrically connected may be different from each other, for example. Alternatively, a part of the first moving contact 12 may be electrically connected to the same second conductive member 22, and the remaining part of the first moving contact 12 may be electrically connected to different second conductive members 22, which is not limited in the embodiment of the present application.

With continued reference to fig. 2 and 3, similar to the first conductive assembly 21, the second conductive assembly 22 may include a second bus bar 221 and a second beam clamp 222 having conductive capabilities. The number of the second bus bars 221 corresponds to the number of the second conductive members 22. The number of sets of second beam chucks 222 is consistent with the number of first moving contacts 12 regardless of the number of second conductive members 22.

The assembly manner of the plurality of first moving contacts 12 and the second conductive element 22 may refer to the related description of the first conductive element 21, and will not be repeated herein.

It should be noted that, the first conductive component 21 and the second conductive component 22 are independent structural members, and the number of the first conductive component 21 and the second conductive component 22 may be the same or different, which is not limited in the embodiment of the present application. For example, when the number of the first conductive members 21 is 2, the number of the second conductive members 22 may be 2, 3, or the like.

A first adjusting member 23 is connected between two adjacent first conductive members 21, and in fact, a first adjusting member 23 is connected between two adjacent first bus bars 211. Similarly, a second adjusting member 24 is connected between two adjacent second conductive assemblies 22, and actually, a second adjusting member 24 is connected between two adjacent second bus bars 221.

When the first adjusting members 23 are made of conductive materials, the adjacent two first bus bars 211 and the first adjusting members 23 can be fastened and connected by fasteners such as bolts, and can be connected by clamping, welding or the like, so that the first adjusting members 23 are electrically connected with the adjacent two first conductive assemblies 21. In this way, the first regulating member 23 can conduct the adjacent two first conductive members 21.

When the first adjusting members 23 are made of insulating materials, the adjacent two first bus bars 211 and the first adjusting members 23 can be connected by means of bolting or clamping, so that the insulating connection between the first adjusting members 23 and the adjacent two first conductive assemblies 21 is realized. In this way, the first regulating member 23 can insulate adjacent two first conductive members 21.

Similarly, when the second adjusting members 24 are made of conductive materials, the adjacent two second bus bars 221 and the second adjusting members 24 may be fastened by fastening members such as bolts, and may be connected by clamping, welding, or the like, so as to electrically connect the second adjusting members 24 and the adjacent two second conductive assemblies 22. In this way, the second regulating member 24 can conduct the adjacent two second conductive members 22.

When the second adjusting members 24 are made of insulating materials, the adjacent two second bus bars 221 and the second adjusting members 24 can be connected by means of bolting or clamping, so that the insulating connection between the second adjusting members 24 and the adjacent two second conductive assemblies 22 is realized. In this manner, the second regulating member 24 can insulate adjacent two of the second conductive members 22.

In the present embodiment, the connection relationship between the adjacent two first conductive members 21 can be adjusted to be in insulating connection or conductive connection by the first adjusting member 23, and the connection relationship between the adjacent two second conductive members 22 can be adjusted to be in insulating connection or conductive connection by the second adjusting member 24. When all the first conductive members 21 in the first base 25 are conducted by the first regulating member 23 and all the second conductive members 22 in the first base 25 are conducted by the second regulating member 24, the first base 25 may correspond to one phase of the circuit breaker a. When part or all of the first conductive members 21 in the first base 25 are insulated by the first adjusting member 23 and part or all of the second conductive members 22 in the first base 25 are insulated by the second adjusting member 24, and the insulated first conductive members 21 are positioned opposite to the insulated second conductive members 22, the first base 25 may correspond to the phases of the circuit breaker a. It can be seen that the first base 25 of the present application may correspond to one phase of the circuit breaker a, or may correspond to multiple phases of the circuit breaker a, thereby improving the versatility of the drawer base 2 including the first base 25.

In some embodiments, regardless of the number of first conductive elements 21 and first adjustment members 23 within first base 25, first adjustment members 23 may be made of conductive material, as shown in fig. 2 and 4. In this way, all the first conductive members 21 in the first base 25 are conductive.

Similarly, regardless of the number of second conductive elements 22 and second adjustment members 24 in the first base 25, the second adjustment members 24 may be made of conductive material as shown in fig. 2. In this way, all the second conductive elements 22 in the first base 25 are conductive.

In the case where all the first conductive members 21 are turned on and all the second conductive members 22 are turned on within the first base 25, the first base 25 may correspond to one phase of the circuit breaker a.

In some embodiments, since one first adjustment member 23 is connected between two adjacent first conductive members 21, the number of first adjustment members 23 is 1 less than the number of first conductive members 21. Based on this, when the number of the first conductive members 21 in the first base 25 is less than or equal to 4, the number of the first regulating members 23 is less than or equal to 3, and in this case, all the first regulating members 23 may be made of an insulating material.

Similarly, when the number of the second conductive elements 22 in the first base 25 is less than or equal to 4, the number of the second adjusting members 24 is less than or equal to 3, and in this case, all the second adjusting members 24 may be made of an insulating material.

In the case where all the first conductive members 21 in the first base 25 are connected in an insulating manner, and all the second conductive members 22 in the first base 25 are connected in an insulating manner, the second base 26 may correspond to two phases, three phases or four phases of the circuit breaker a.

In some embodiments, when the number of the first and second adjustment members 23 and 24 is plural, as shown in fig. 3 and 5, part of the first adjustment members 23 among the plurality of first adjustment members 23 may be made of an insulating material, and the remaining first adjustment members 23 may be made of a conductive material. Some of the second adjustment members 24 of the plurality of second adjustment members 24 may be made of an insulating material and the remaining second adjustment members 24 may be made of a conductive material. Wherein the number of the insulating first adjusting members 23 and the insulating second adjusting members 24 are the same and are opposite to each other.

For example, when the number of the first regulating members 23 and the second regulating members 24 is two, as shown in fig. 3 and 5, one of the first regulating members 23 and the opposite one of the second regulating members 24 may be made of an insulating material, and the other of the first regulating members 23 and the other of the second regulating members 24 may be made of a conductive material. In this case, the first base 25 may correspond to two phases of the circuit breaker a.

When the number of the first regulating members 23 and the second regulating members 24 is three, one of the first regulating members 23 and the opposite one of the second regulating members 24 may be made of an insulating material, and the remaining two first regulating members 23 and the remaining two second regulating members 24 may be made of a conductive material. In this case, the first base 25 may correspond to two phases of the circuit breaker a.

Alternatively, two of the first regulating members 23 and the corresponding two first regulating members 23 may be made of an insulating material, and the remaining one first regulating member 23 and the remaining one second regulating member 24 may be made of a conductive material. In this case, the first base 25 may correspond to three phases of the circuit breaker a.

The possibility of the first base 25 corresponding to the four phases of the circuit breaker a in the present embodiment is not enumerated here, but the adjustment of the first and second adjusting members 23 and 24 makes the four-phase implementation of the first base 25 corresponding to the circuit breaker a fall within the protection scope of the present application.

In this embodiment, by setting part of the first adjusting member 23 and the second adjusting member 24 opposite to the part of the first adjusting member 23 to be made of an insulating material and setting the remaining first adjusting member 23 and the second adjusting member 24 to be made of a conductive material, the first base 25 can correspond to two phases, three phases or four phases of the circuit breaker a, and versatility of the drawer base 2 including the first base 25 is improved.

It is worth noting that when the first base 25 corresponds to two phases of the circuit breaker a, the two phases are adjacent two phases in the circuit breaker a. Similarly, when the first base 25 corresponds to three phases of the circuit breaker a, the three phases are adjacent three phases in the circuit breaker a.

For example, when the first base 25 corresponds to two phases of the circuit breaker a, the first base 25 may correspond to N-phase and a-phase of the circuit breaker a. Alternatively, the first base 25 may correspond to the a-phase and the B-phase of the circuit breaker a. Alternatively, the first base 25 may correspond to the B and C phases of the circuit breaker a.

When the first base 25 corresponds to three phases of the circuit breaker a, the first base 25 may correspond to N, a, and B phases of the circuit breaker a. Alternatively, the first base 25 may correspond to the a, B, and C phases of the circuit breaker a.

Fig. 6 is a schematic structural view of the first base 25, and when the first adjusting member 23 is installed, as shown in fig. 6, a first spacer 251 may be disposed in the first base 25. One side of the first adjusting member 23 is fixed to the first spacer 251, and the other side of the first adjusting member 23 is connected to two adjacent first conductive members 21.

The first spacer 251 may be integrally formed with the first base 25, and the first spacer 251 may also be detachably connected with the first base 25 by a clamping connection, a screw connection, or the like, which is not limited in the embodiment of the present application.

The first barrier 251 may be a column provided in the first base 25. The first barrier 251 partitions the inner space of the first base 25, forming a plurality of first mounting cavities. The first mounting cavity is used to mount first bus bar 211 and first bundle clamp 212. When the number of first conductive elements 21 is equal to the number of first stationary contacts 11, each first mounting cavity may be used to mount a set of first bundle grippers 212 and one first busbar 211.

The number of the first spacers 251 is the same as the number of the first regulating members 23, and the positions of the first spacers 251 are opposite to the positions of the first regulating members 23 one by one. Each first adjusting member 23 may be fixedly mounted on the corresponding first spacer 251 by means of a snap fit, a screw connection, or the like.

In effecting the installation of the second adjustment member 24, as shown in fig. 6, a second spacer 252 may be provided in the first base 25. One side of the second adjusting member 24 is fixed to the second barrier 252, and the other side of the second adjusting member 24 is connected to the adjacent two second conductive members 22.

The structure of the second spacer 252, the manner in which the second adjusting member 24 is fixed to the second spacer 252, etc. are described with reference to the related description of the first spacer 251, and will not be described again.

It should be noted that, the first base 25 may be provided with only the first spacer 251, only the second spacer 252, and both the first spacer 251 and the second spacer 252.

When the first spacer 251 is disposed in the first base 25, the first adjusting member 23 may be fixedly mounted on the corresponding first spacer 251 by the above-mentioned fastening, screw connection, or the like, and in some embodiments, the first adjusting member 23 may be integrally formed with the first spacer 251, as shown in fig. 7, and a side of the first adjusting member 23 facing the first conductive component 21 may be provided with the first processing mark X1.

The first processing mark X1 may be a groove provided on a side of the first adjusting member 23 facing the first conductive member 21, or may be a protrusion provided on a side of the first adjusting member 23 facing the first conductive member 21, and the specific form of the first processing mark X1 is not limited in the embodiment of the present application.

Similarly, when the second spacer 252 is disposed in the first base 25, the second adjusting member 24 may be fixedly mounted on the corresponding second spacer 252 by the above-mentioned fastening, screw connection, etc., and in some embodiments, the second adjusting member 24 may be integrally formed with the second spacer 252, as shown in fig. 7, and a side of the second adjusting member 24 facing the second conductive component 22 may be provided with the second processing mark X2.

The description of the second processing mark X2 may refer to the description of the first processing mark X1, and will not be repeated here.

When the first adjusting member 23 integrally formed with the first spacer 251 is made of a conductive material, if two adjacent first conductive members 21 need to be conducted through the first adjusting member 23, the step of mounting the first adjusting member 23 on the first spacer 251 may be omitted; assuming that two adjacent first conductive members 21 need to be insulated by the first regulating member 23, the first regulating member 23 may be cut along the first processing mark X1 to expose the first barrier 251, so that the first regulating member 23 made of an insulating material is mounted on the first barrier 251. In practice, the first adjusting member 23 formed integrally with the first spacer 251 may also be made of an insulating material, and specific processing will not be described here.

Similarly, when the second adjusting member 24 integrally formed with the second spacer 252 is made of a conductive material, if two adjacent second conductive components 22 need to be conducted by the second adjusting member 24, the step of mounting the second adjusting member 24 on the second spacer 252 may be omitted; assuming that two adjacent second conductive members 22 are required to be insulated by the second regulating members 24, the second regulating members 24 may be cut along the second processing mark X2 to expose the second barrier 252, so that the second regulating members 24 made of an insulating material are mounted on the first barrier 251. In practice, the second adjusting member 24 integrally formed with the second barrier 252 may also be made of an insulating material, and specific processing will not be described herein.

After the first regulating member 23 made of an insulating material and the second regulating member 24 made of an insulating material are detached, the first base 25 is structured as shown in fig. 8.

In some embodiments, as shown in fig. 5, a first labyrinth groove C1 may be provided at a side of the first barrier 251 facing the first regulating member 23. Fig. 9 is a schematic structural view of the insulating first regulating member 23, and as shown in fig. 9, a side of the first regulating member 23 facing the first barrier 251 may be provided with a second labyrinth groove C2. When the insulating first regulating member 23 is mounted to the first spacer 251, the first and second labyrinth grooves C1 and C2 may be nested with each other, so that the possibility of electrical connection between the two phases on both sides of the insulating first regulating member 23 may be effectively reduced.

Similarly, the side of the second spacer 252 facing the second regulator 24 and the side of the second regulator 24 facing the second spacer 252 may also be provided with a labyrinth groove to reduce the possibility of electrical connection between the two phases on either side of the insulated second regulator 24 when the insulated second regulator 24 is mounted on the second spacer 252.

The above embodiment describes the structure of the drawer base 2 when the drawer base 2 includes one base, and in practical use, the drawer base 2 may include not only one base but also two or three bases. The structure of the drawer base 2 including a plurality of bases will be described in detail with reference to fig. 1, 10 to 12 based on the previous embodiments.

In some embodiments, as shown in fig. 1, the circuit breaker a may further include a second stationary contact 13 and a second movable contact 14. Fig. 10 is an exploded view of another small unit in the drawer seat 2 according to the embodiment of the present application, and as shown in fig. 10, the drawer seat 2 corresponding to the small unit may further include a second base 26, a third conductive component 27, and a fourth conductive component 28. The second base 26 is detachably connected to the first base 25, and the third conductive member 27 and the fourth conductive member 28 are mounted on the second base 26. The third conductive component 27 is electrically connected with the second fixed contact 13, and the fourth conductive component 28 is electrically connected with the second movable contact 14.

Similar to the first stationary contact 11 and the first movable contact 12, the second stationary contact 13 and the second movable contact 14 are also used in pairs. The second stationary contact 13 and the second movable contact 14 correspond to the other phases of the circuit breaker a, and are different from the first stationary contact 11 and the first movable contact 12. The number of the second fixed contacts 13 and the second movable contacts 14 may be one pair, two pairs, or three pairs, which is not limited in the embodiment of the present application.

The number of the third conductive members 27 may be one or more. The structure of the third conductive element 27, and the implementation form of the electrical connection between the third conductive element 27 and the second stationary contact 13, may refer to the description related to the first conductive element 21, which will not be described herein.

Similarly, the number of the fourth conductive elements 28 may be one or more. The structure of the fourth conductive element 28, and the implementation of the fourth conductive element 28 in electrical connection with the second movable contact 14, are all described with reference to the second conductive element 22, and will not be further described herein.

The second base 26 is used for supporting the third conductive component 27, the fourth conductive component 28 and the like. The second base 26 and the first base 25 may be detachably connected by means of a buckle, a screw connection, or the like.

The second base 26 is different from the first base 25 in that the conduction and insulation between the third conductive members 27 in the second base 26 are not adjustable, and the conduction and insulation between the fourth conductive members 28 are not adjustable. The second base 26 corresponds to one phase of the circuit breaker.

In this embodiment, the second base 26 is detachably connected to the first base 25 on the basis that the drawer base 2 includes the first base 25. When the third conductive component 27 located in the second base 26 is electrically connected with the second fixed contact 13 and the fourth conductive component 28 is electrically connected with the second moving contact 14, the number of phases of the circuit breaker a including the drawer base 2 can be conveniently expanded, the breaking capacity of the circuit breaker a is improved, and the application range of the circuit breaker a is enlarged.

In some embodiments, the number of the second fixed contacts 13 and the second movable contacts 14 is M pairs, M being an integer greater than or equal to 3. The third conductive assembly 27 and the fourth conductive assembly 28 connect M pairs of the second stationary contact 13 and the second movable contact 14 in parallel.

When the number of the third conductive members 27 and the fourth conductive members 28 is one, all the second fixed contacts 13 may be electrically connected to the one third conductive member 27, and all the second movable contacts 14 may be electrically connected to the one fourth conductive member 28, so that M pairs of the second fixed contacts 13 and the second movable contacts 14 are connected in parallel through the one third conductive member 27 and the one fourth conductive member 28.

When the number of the third and fourth conductive members 27 and 28 is plural, in some embodiments, as shown in fig. 10, the drawer housing 2 may include first and second intermediate conductive members 29 and 30. A first intermediate conductive member 29 is electrically connected between two adjacent third conductive members 27, and a second intermediate conductive member is electrically connected between two adjacent fourth conductive members 28.

The third conductive member 27 and the first intermediate conductive member 29 may be fastened by a fastener such as a bolt, or may be electrically connected by a snap fit, welding, or the like.

The fourth conductive element 28 and the second intermediate conductive element 30 may be electrically connected by bolting, clamping, welding, or the like.

In accomplishing the installation of the first and second intermediate conductive members 29 and 30, in some embodiments, as shown in fig. 10, third and fourth baffles 261 and 262 may be disposed within the second base 26.

The third spacers 261 are in one-to-one correspondence with the first intermediate conductive members 29, and each first intermediate conductive member 29 is fixed to the corresponding third spacer 261. The fourth spacers 262 are in one-to-one correspondence with the second intermediate conductive members 30, and each second intermediate conductive member 30 is fixed to the corresponding fourth spacer 262.

The structure of the third barrier 261 and the structure of the fourth barrier 262, the installation of the third barrier 261 and the fourth barrier 262 in the second base 26, respectively, may be referred to the related description of the first barrier 251 and the second barrier 252, and will not be described again here.

The M pairs of second fixed contacts 13 and second movable contacts 14 corresponding to the same phase of the circuit breaker a are connected in parallel by the third conductive assembly 27 and the fourth conductive assembly 28, which corresponds to connecting M second contact systems in parallel. In this embodiment, at least 3 second contact systems can be connected in parallel in one phase of the drawer base 2, and compared with the prior art, the number of contact systems that can be connected in parallel in one phase is increased, so that the current carrying capacity of the circuit breaker a including the drawer base 2 can be improved, and the current application range of the circuit breaker a is increased.

Further, on the basis of the previous embodiment, when the first base 25 corresponds to two phases of the circuit breaker a and the number of the first stationary contact 11 and the first movable contact 12 is at least three, the insulating first adjusting member 23 and the insulating second adjusting member 24 may be disposed away from the second base 26.

By the above-described arrangement, when the second base 26 is connected to one side of the first base 25, the number of the first contact systems corresponding to the side of the first base 25 close to the second base 26 can be made relatively large, while the number of the first contact systems corresponding to the side of the first base 25 remote from the second base 26 can be made relatively small.

One side of the first base 25 close to the second base 26 corresponds to the middle phase of the circuit breaker a, and one side of the first base 25 remote from the second base 26 corresponds to the phase at the opposite edge in the circuit breaker a, and the heat generated from the middle phase of the circuit breaker a is difficult to dissipate relative to the phase at the outer side due to the heat generated from the middle phase of the circuit breaker a. The scheme can be used for conveniently reducing the temperature rise generated by the intermediate phase and reducing the possibility of heat aggregation generated by the intermediate phase.

In some embodiments, when the first base 25 corresponds to one or two phases of the circuit breaker a and the second base 26 corresponds to one phase of the circuit breaker a, as shown in fig. 1, the circuit breaker a may further include a third stationary contact 15 and a third moving contact 16. Fig. 11 is an exploded view of yet another small unit in a drawer base 2 according to an embodiment of the present application, and as shown in fig. 11, the drawer base 2 may further include a third base 31, a fifth conductive component 32, and a sixth conductive component 33. The third base 31 is detachably connected with the first base 25, and the third base 31 and the second base 26 are located at two opposite sides of the first base 25, and the fifth conductive component 32 and the sixth conductive component 33 are mounted on the third base 31. The fifth conductive component 32 is electrically connected to the third stationary contact 15, and the sixth conductive component 33 is electrically connected to the third movable contact 16.

Like the first stationary contact 11 and the first movable contact 12, and like the second stationary contact 13 and the second movable contact 14, the third stationary contact 15 and the third movable contact 16 are also used in pairs. The third stationary contact 15 and the third movable contact 16 are different from each other, corresponding to the other phases of the circuit breaker a, to the first stationary contact 11 and the first movable contact 12, and to the second stationary contact 13 and the second movable contact 14. The number of the third fixed contacts 15 and the third movable contacts 16 may be one pair, two pairs, or three pairs, which is not limited in the embodiment of the present application.

The number of the fifth conductive members 32 may be one or more. The structure of the fifth conductive element 32, and the implementation form of the electrical connection between the fifth conductive element 32 and the third stationary contact 15, may refer to the description related to the first conductive element 21, which will not be described herein.

Similarly, the number of the sixth conductive elements 33 may be one or more. The structure of the sixth conductive element 33, and the implementation of the electrical connection of the sixth conductive element 33 to the third movable contact 16, are all described with reference to the second conductive element 22, and will not be described further herein.

The third base 31 is used for supporting structural members such as a fifth conductive member 32 and a sixth conductive member 33. The third base 31 and the first base 25 may be detachably connected by means of a buckle, a screw connection, or the like.

Since the second base 26 always corresponds to one phase of the circuit breaker a, and the circuit breaker a may include three phases and four phases, the third base 31 may correspond to one phase or two phases of the circuit breaker a when the first base 25 corresponds to one phase of the circuit breaker a; when the first base 25 corresponds to two phases of the circuit breaker a, the third base 31 may correspond to one phase of the circuit breaker a.

Illustratively, the first base 25 may correspond to the a-phase of circuit breaker a, the second base 26 may correspond to the B-phase of circuit breaker a, and the third base 31 may correspond to the C-phase of circuit breaker a. Alternatively, the third base 31 may correspond to the a phase of the circuit breaker a, the second base 26 may correspond to the B phase of the circuit breaker a, and the first base 25 may correspond to the C phase of the circuit breaker a.

When the first base 25 and the second base 26 correspond to one phase of the circuit breaker a, respectively, and the third base 31 corresponds to two phases of the circuit breaker a, the third base 31 may correspond to N-phase and a-phase of the circuit breaker a, the second base 26 may correspond to B-phase of the circuit breaker a, and the first base 25 may correspond to C-phase of the circuit breaker a. Alternatively, the third base 31 may correspond to the N-phase and the a-phase of the circuit breaker a, the first base 25 may correspond to the B-phase of the circuit breaker a, and the second base 26 may correspond to the C-phase of the circuit breaker a.

When the second base 26 and the third base 31 correspond to one phase of the circuit breaker a, respectively, and the first base 25 corresponds to two phases of the circuit breaker a, the first base 25 may correspond to N-phase and a-phase of the circuit breaker a, the second base 26 may correspond to B-phase of the circuit breaker a, and the third base 31 may correspond to C-phase of the circuit breaker a. Alternatively, the third base 31 may correspond to the N phase of the circuit breaker a, the second base 26 may correspond to the a phase of the circuit breaker a, and the first base 25 may correspond to the B and C phases of the circuit breaker a.

The above is only a possibility of listing the correspondence relationship between the first base 25, the second base 26, and the third base 31 and each phase of the circuit breaker a, and the present application is not limited thereto.

In the present embodiment, the third base 31 is detachably connected to the first base 25 on the basis that the drawer base 2 includes the first base 25 and the second base 26. When the fifth conductive component 32 located in the third base 31 is electrically connected with the third fixed contact 15 and the sixth conductive component 33 is electrically connected with the third moving contact 16, the number of phases of the circuit breaker a including the drawer base 2 can be further expanded, the breaking capacity of the circuit breaker a can be improved, and the application range of the circuit breaker a can be enlarged.

Fig. 12 is a schematic structural view of a drawer base 2 according to an embodiment of the present application, and according to some embodiments of the present application, in combination with fig. 1 to 12, the circuit breaker a includes three split-type bases and eight contact systems.

For the first base 25, the first base 25 corresponds to three first contact systems. Among the three first conductive members 21, a first adjusting member 23 made of a conductive material is connected between two adjacent first conductive members 21 adjacent to the second base 26, and a first adjusting member 23 made of an insulating material is connected between two adjacent first conductive members 21 distant from the second base 26, so that only two first conductive members 21 adjacent to the second base 26 are conducted.

Similarly, among the three second conductive components 22, a second adjusting member 24 made of conductive material is connected between two adjacent second conductive components 22 near the second base 26, and a second adjusting member 24 made of insulating material is connected between two adjacent second conductive components 22 far from the second base 26, so that only two second conductive components 22 near the second base 26 are conducted.

The three first conductive assemblies 21 and the three second conductive assemblies 22 are connected in parallel, only two first contact systems of the three first contact systems close to the second base 26 are connected in parallel, and the part of the first base 25 close to the second base 26 corresponds to the phase a of the circuit breaker a, and the part of the first base 25 far from the second base 26 corresponds to the phase N of the circuit breaker a.

For the second base 26, the second base 256 corresponds to three second contact systems. A first intermediate conductive member 29 is electrically connected between two adjacent third conductive members 27 of the three third conductive members 27, so that the three third conductive members 27 are electrically connected.

Similarly, a second intermediate conductive member 30 is electrically connected between two adjacent fourth conductive members 28 of the three fourth conductive members 28, so that the three fourth conductive members 28 are electrically connected.

Three third conductive assemblies 27 and three fourth conductive assemblies 28 connect the three second contact systems in parallel, and the second base 26 corresponds to the B phase of circuit breaker a.

For the third base 31, the third base 31 corresponds to two third contact systems. A third intermediate conductive member is electrically connected between adjacent two fifth conductive members 32 such that the two fifth conductive members 32 are connected in series.

Similarly, a fourth intermediate conductive member is electrically connected between two adjacent sixth conductive elements 33, so that the two sixth conductive elements 33 are connected in series.

Among them, the structures of the third intermediate conductive member and the fourth intermediate conductive member are similar to those of the first intermediate conductive member 29 and the second intermediate conductive member 30, and the explanation of the third intermediate conductive member and the fourth intermediate conductive member will not be expanded in detail herein.

Two fifth conductive assemblies 32 and two sixth conductive assemblies 33 connect the two third contact systems in parallel, and the third base 31 corresponds to the C-phase of the circuit breaker a.

The distribution of the eight contact systems based on the circuit breaker a of the present embodiment allows the circuit breaker a to be used to break three-phase currents, or to three-phase plus N-phase currents. In the first base 25, two contact systems are connected in parallel, so that the first base 25 can correspond to two phases of the circuit breaker a, and the universality of the drawer base 2 including the first base 25 is improved. In the second base 26, the three contact systems are connected in parallel, so that the current carrying capacity of the circuit breaker a can be improved, and the current application range of the circuit breaker a is increased. And the second base 26 corresponds to the phase B of the breaker A, so that the temperature rise generated by the intermediate phase can be reduced, and the possibility of heat accumulation generated by the intermediate phase is reduced.

The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. A drawer housing for a circuit breaker, the circuit breaker comprising a plurality of pairs of first stationary contacts and first moving contacts, the drawer housing comprising: the first conductive component, the second conductive component, the first adjusting piece and the second adjusting piece are all installed on the first base;

one of the first conductive components is electrically connected with one or more first fixed contacts, and one of the second conductive components is electrically connected with one or more first movable contacts;

one first adjusting piece is connected between two adjacent first conductive assemblies, one second adjusting piece is connected between two adjacent second conductive assemblies, the first adjusting piece is used for insulating or conducting two adjacent first conductive assemblies, and the second adjusting piece is used for insulating or conducting two adjacent second conductive assemblies.

2. The drawer base of claim 1, wherein the first and second adjustment members are each made of an electrically conductive material; alternatively, the first adjusting member and the second adjusting member are made of insulating materials.

3. The drawer base of claim 1, wherein when the number of the first and second adjustment members is plural, some of the first adjustment members are made of an insulating material, and the remaining first adjustment members are made of a conductive material;

some of the second adjusting members are made of insulating materials, and the rest of the second adjusting members are made of conductive materials;

wherein the number of the first insulating adjusting pieces and the number of the second insulating adjusting pieces are the same, and the positions of the first insulating adjusting pieces and the second insulating adjusting pieces are opposite.

4. A drawer base according to any one of claims 1 to 3, wherein a first baffle is provided in the first base, one side of the first adjusting member is fixed on the first baffle, and the other side of the first adjusting member is connected with two adjacent first conductive assemblies; and/or the number of the groups of groups,

the first base is internally provided with a second baffle, one side of the second adjusting piece is fixed on the second baffle, and the other side of the second adjusting piece is connected with two adjacent second conductive assemblies.

5. The drawer base of claim 4, wherein when the first spacer is disposed in the first base, the first adjusting member is integrally formed with the first spacer, and a first processing mark is disposed on a side of the first adjusting member facing the first conductive component; and/or the number of the groups of groups,

when the second baffle is arranged in the first base, the second adjusting piece and the second baffle are integrally formed, and a second processing mark is arranged on one side, facing the second conductive component, of the second adjusting piece.

6. The drawer mount of claim 1, wherein the circuit breaker includes a second stationary contact and a second movable contact, the drawer mount further comprising: the second base is detachably connected with the first base, and the third conductive component and the fourth conductive component are both arranged on the second base;

the third conductive component is electrically connected with the second static contact, and the fourth conductive component is electrically connected with the second moving contact.

7. The drawer base of claim 6, wherein the number of the second stationary contacts and the second movable contacts is M pairs, M being an integer greater than or equal to 3;

And the third conductive component and the fourth conductive component connect M pairs of the second fixed contact and the second movable contact in parallel.

8. The drawer mount of claim 7, wherein the first and second conductive assemblies are a plurality of numbers, the drawer mount comprising first and second intermediate conductive members;

one first middle conductive piece is electrically connected between two adjacent first conductive components, and one second middle conductive component is electrically connected between two adjacent second conductive components.

9. The drawer housing of claim 6, wherein the circuit breaker further comprises a third stationary contact and a third movable contact, the drawer housing further comprising: the third base is detachably connected with the first base, the third base and the second base are positioned on two opposite sides of the first base, and the fifth conductive component and the sixth conductive component are both arranged on the third base;

the fifth conductive component is electrically connected with the third static contact, and the sixth conductive component is electrically connected with the third moving contact.

10. A circuit breaker comprising a drawer base according to any one of claims 1 to 9.