CN220138216U - Circuit breaker - Google Patents

Abstract

The utility model discloses a circuit breaker, which comprises: the base comprises a bottom plate and a plurality of side plates connected with the bottom plate at preset angles, and the bottom plate extends along a first horizontal plane; the fixed plate is connected with the bottom plate in an intersecting mode at a preset angle, an installation space is formed by enclosing the bottom plate, the side plates and the fixed plate, the fixed plate is provided with fixed holes, the fixed holes extend along a first direction, and the first direction is perpendicular to a first horizontal plane; the electrode module is arranged in the installation space and is provided with a clamping part which is arranged in a protruding mode, and the clamping part is arranged opposite to the fixing hole; the fixing piece is provided with a pressing joint and a rod part, the pressing joint is fixedly clamped with the clamping part, and the rod part is connected with the fixing hole in a coupling mode. The circuit breaker can ensure that the electrode module of the circuit breaker can be stably arranged on the base in the debugging stage, and can ensure the overall stability of the circuit breaker after the circuit breaker is arranged.

Description

Circuit breaker

Technical Field

The utility model belongs to the technical field of electrical equipment, and particularly relates to a circuit breaker.

Background

In the current high voltage circuit breaker structure, the circuit breaker generally includes a housing and an electrode module, and after the circuit breaker is assembled, the electrode module is fixedly installed inside the housing, and the circuit breaker is integrally installed in a circuit system to control the whole system.

In the process of assembling the electrode module and the shell of the circuit breaker, the electrode module is only placed in the base of the shell, the middle cover and the surface cover of the shell are connected through bolts, and the integral structure formed by the middle cover and the surface cover is buckled on the base of the shell so as to clamp the electrode module inside the shell. However, the fixing mode makes the electrode module unable to be fixed on the base in the debugging process of the circuit breaker, so that the electrode module has a risk of loosening or falling in the debugging process.

Disclosure of Invention

The utility model provides a circuit breaker, which can ensure that an electrode module of the circuit breaker can be stably arranged on a base in a debugging stage, and can ensure the overall stability of the circuit breaker after the circuit breaker is arranged.

The utility model provides a circuit breaker, wherein the circuit breaker comprises: the base comprises a bottom plate and a plurality of side plates connected with the bottom plate at preset angles, and the bottom plate extends along a first horizontal plane; the fixed plate is connected with the bottom plate in an intersecting mode at a preset angle, an installation space is formed by enclosing the bottom plate, the side plates and the fixed plate, the fixed plate is provided with fixed holes, the fixed holes extend along a first direction, and the first direction is perpendicular to a first horizontal plane; the electrode module is arranged in the installation space and is provided with a clamping part which is arranged in a protruding mode, and the clamping part is arranged opposite to the fixing hole; the fixing piece is provided with a pressing joint and a rod part, the pressing joint is fixedly clamped with the clamping part, and the rod part is connected with the fixing hole in a coupling mode.

The circuit breaker as above, wherein the fixed plate has a plurality of fixed orifices of a plurality of along the interval setting of second direction, and the electrode module has a plurality of blocks of establishing the portion of a plurality of along the interval setting of second direction, and a plurality of fixed orifices and a plurality of blocks establish the setting of portion one-to-one, and each fixed orifice is connected through the mounting with the card of corresponding establishes the portion.

The circuit breaker as above, wherein the electrode module has a clamping groove concavely arranged, and the clamping part protrudes out of the surface of the clamping groove.

The circuit breaker is characterized in that the fixing plate is provided with a clamping protrusion protruding, the shape of the clamping protrusion is matched with that of the clamping groove, the clamping protrusion and the clamping groove are arranged oppositely, and the fixing hole and the clamping protrusion are arranged in the same position along the second direction.

The circuit breaker as above, wherein the electrode module has a plurality of mounting slot assemblies, the circuit breaker further comprising: the middle cover is provided with a plurality of first mounting screw holes, the first mounting screw holes are in one-to-one correspondence with the mounting groove components and are oppositely arranged, and each first mounting screw hole is connected with the corresponding mounting groove component through a mounting screw.

The circuit breaker as above, wherein the circuit breaker further comprises: the surface cover is provided with a plurality of second mounting screw holes, the second mounting screw holes are in one-to-one correspondence with the first mounting screw holes and are opposite in position, the electrode module is mounted in the mounting space in the assembled state of the circuit breaker, the base, the middle cover and the surface cover are sequentially arranged along the first direction, and each second mounting screw hole is connected with the corresponding first mounting screw hole and the corresponding mounting groove component through mounting screws.

The circuit breaker as above, wherein the electrode module further has a plurality of installation portions protruding and arranged, the installation portions and the installation groove components are arranged in a one-to-one correspondence, and along the first direction, each installation groove component is arranged at the top of the corresponding installation portion.

The circuit breaker as above, wherein the mounting groove assembly comprises a first mounting groove, a second mounting groove and a mounting nut, wherein the first mounting groove extends along a first direction, the second mounting groove extends along a second direction and is intersected with the first mounting groove, and the mounting nut is clamped in the second mounting groove.

The circuit breaker comprises an electrode module, a first fastening space and a second fastening space, wherein the electrode module is provided with a moving contact arc striking piece which is of a bending structure; the circuit breaker further comprises: the first fastener penetrates through the side plates arranged at intervals along the third direction and penetrates through the first fastening space in the electrode module, and the first fastener is used for improving the strength of the electrode module at the arc striking piece of the moving contact.

The circuit breaker comprises an electrode module, a first fastening space and a second fastening space, wherein the electrode module is provided with a fixed contact which is of a bending structure; the circuit breaker further comprises: the second fastening piece penetrates through the side plates arranged at intervals along the third direction and penetrates through the second fastening space in the electrode module, and the second fastening piece is used for improving the strength of the electrode module at the fixed contact.

The circuit breaker comprises a base, a fixed plate, an electrode module and a fixed piece, wherein the base comprises a bottom plate and a plurality of side plates connected with the bottom plate at preset angles, the bottom plate extends along a first horizontal plane, the fixed plate is connected with the bottom plate at preset angles in an intersecting way, the bottom plate, the side plates and the fixed plate form an installation space in a surrounding way, and the installation space is used for installing the electrode module; the fixed orifices have been seted up to the fixed plate, the fixed orifices extends along first direction setting, first direction perpendicular to first horizontal plane, electrode module then has the card of protrusion setting and establishes the portion, the card establishes the portion and the setting that fixed orifices position is relative, because the mounting has crimping head and pole portion, after electrode module installs and gets into the installation space, the pole portion of mounting inserts along first direction and establishes the fixed orifices and be connected with the fixed orifices coupling, so that the setting of mounting and fixed plate looks fixed, the crimping head joint of mounting is in the surface of card establishing the portion, so that electrode module is whole to be fixed in between crimping head and the bottom plate, thereby make in the debugging stage of circuit breaker, electrode module homoenergetic is stably installed in the installation space of base, simultaneously after the circuit breaker installation is accomplished, electrode module also can not drop by the installation space, the overall stability of circuit breaker has been guaranteed.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present utility model, the drawings that are needed to be used in the embodiments of the present utility model will be briefly described, and it is possible for a person skilled in the art to obtain other drawings according to these drawings without inventive effort.

Fig. 1 is a schematic view of an electrode module of a circuit breaker according to an embodiment of the present utility model installed in an installation space;

fig. 2 is an exploded view of a circuit breaker according to an embodiment of the present utility model;

fig. 3 is a cross-sectional view of an electrode module of a circuit breaker according to an embodiment of the present utility model;

fig. 4 is a schematic structural view of a single electrode module of a circuit breaker according to an embodiment of the present utility model;

fig. 5 is a top view showing that all electrode modules of the circuit breaker according to the embodiment of the present utility model are installed in the installation space;

fig. 6 is an isometric view of a circuit breaker in which all electrode modules of the circuit breaker are installed in an installation space according to an embodiment of the present utility model.

Reference numerals illustrate:

10. a base; 11. a bottom plate; 12. a side plate; 13. an installation space; 20. a fixing plate; 21. a fixing hole; 22. the clamping bulge; 30. an electrode module; 31. a clamping part; 32. a clamping groove; 33. a mounting groove assembly; 331. a first mounting groove; 332. a second mounting groove; 333. installing a nut; 34. a mounting part; 35. arc striking sheets of the moving contact; 351. a first fastening space; 36. a stationary contact; 361. a second fastening space; 40. a fixing member; 41. pressing the joint; 42. a stem portion; 50. a middle cover; 51. the first installation screw hole; 52. installing a screw; 60. a face cover; 61. the second installation screw hole; 70. a first fastener; 80. a second fastener;

x, a first direction; y, second direction; z, third direction.

Detailed Description

Features and exemplary embodiments of various aspects of the present utility model will be described in detail below, and in order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in further detail below with reference to the accompanying drawings and the detailed embodiments. It should be understood that the particular embodiments described herein are meant to be illustrative of the utility model only and not limiting. It will be apparent to one skilled in the art that the present utility model may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the utility model by showing examples of the utility model.

As shown in fig. 1 to 6, an embodiment of the present utility model provides a circuit breaker, wherein the circuit breaker includes: the base 10, the base 10 includes a bottom plate 11 and a plurality of side plates 12 connected with the bottom plate 11 at a preset angle, the bottom plate 11 extends along a first horizontal plane; the fixing plate 20 is connected to the bottom plate 11 in a crossing mode at a preset angle, the bottom plate 11, the side plates 12 and the fixing plate 20 are enclosed to form an installation space 13, the fixing plate 20 is provided with fixing holes 21, the fixing holes 21 are arranged in an extending mode along a first direction X, and the first direction X is perpendicular to a first horizontal plane; the electrode module 30 is arranged in the installation space 13, the electrode module 30 is provided with a clamping part 31 which is arranged in a protruding mode, and the clamping part 31 is arranged opposite to the fixing hole 21; the fixing member 40 has a press-fit joint 41 and a rod portion 42, the press-fit joint 41 is engaged with the engagement portion 31, and the rod portion 42 is coupled to the fixing hole 21. The first direction X is the up-down direction in fig. 1.

In particular, after the electrode module 30 is installed into the installation space 13, the rod portion 42 of the fixing member 40 is inserted into the fixing hole 21 along the first direction X and is coupled to the fixing hole 21, so that the fixing member 40 is fixedly disposed with the fixing plate 20, the press-connection head 41 of the fixing member 40 is clamped on the surface of the clamping portion 31, so that the electrode module 30 is integrally fixed between the press-connection head 41 and the bottom plate 11, and therefore the electrode module 30 can be stably installed in the installation space 13 of the base 10 in the debugging stage of the circuit breaker, and meanwhile, after the circuit breaker is installed, the electrode module 30 cannot fall off from the installation space 13, and the overall stability of the circuit breaker is ensured.

In the debugging stage of the circuit breaker, the circuit breaker is not completely assembled, and only the electrode module 30 is required to be disposed in the installation space 13 formed by the base 10 and the fixing plate 20, and the electrode module 30 is fixed by the fixing member 40, so that the circuit breaker can be debugged when the electrode module 30 is fixed because the electrode module 30 is a functional component of the circuit breaker.

Specifically, the fixing member 40 is a bolt, the fixing hole 21 is a screw hole, the press joint 41 is a bolt head, the rod portion 42 is a screw rod, and the rod portion 42 of the fixing member 40 is screwed into the fixing hole 21 along the first direction X and is in threaded connection with the fixing hole 21, so that the fixing between the fixing member 40 and the fixing plate 20 is realized.

As shown in fig. 1, in the circuit breaker according to the embodiment of the present utility model, the fixing plate 20 has a plurality of fixing holes 21 spaced apart along the second direction Y, the electrode module 30 has a plurality of clamping portions 31 spaced apart along the second direction Y, the plurality of fixing holes 21 are disposed in one-to-one correspondence with the plurality of clamping portions 31, and each fixing hole 21 is connected to the corresponding clamping portion 31 through a fixing member 40. Wherein the first direction X is perpendicular to the second direction Y.

In specific implementation, the electrode modules 30 can be fixed at multiple positions in the second direction Y through the arrangement of the multiple fixing holes 21 and the multiple clamping portions 31, so that the unstable installation of one end of the electrode modules 30 in the second direction Y is avoided, the risk that the electrode modules 30 fall off from the installation space 13 is avoided due to the fixation at multiple positions, and the installation stability of the electrode modules 30 is improved.

As shown in fig. 1, in the circuit breaker according to the embodiment of the utility model, the electrode module 30 has a clamping groove 32 concavely disposed, and the clamping portion 31 protrudes from the surface of the clamping groove 32.

In particular, the clamping groove 32 can be recessed in the surface of the electrode module 30, and when the clamping portion 31 protrudes from the surface of the clamping groove 32, the surface of the clamping portion 31 can be in the same plane with the surface of the electrode module 30, or recessed in the surface of the electrode module 30, so that the rod portion 42 of the fixing member 40 cannot interfere with the clamping portion 31 during the installation process, and therefore the installation of the fixing member 40 cannot be affected. Further, since the fixing member 40 is a bolt, and the diameter of the crimp head 41 is larger than the diameter of the rod portion 42, the crimp head 41 can be engaged with the engagement portion 31 after the rod portion 42 enters the fixing hole 21.

As shown in fig. 1, in the circuit breaker according to the embodiment of the present utility model, the fixing plate 20 has a protruding clamping protrusion 22, the clamping protrusion 22 is matched with the shape of the clamping groove 32, the clamping protrusion 22 and the clamping groove 32 are disposed opposite to each other, and along the second direction Y, the fixing hole 21 and the clamping protrusion 22 are disposed at the same position.

In particular, the shape of the clamping protrusion 22 is adapted to the shape of the clamping groove 32 and the position of the clamping protrusion 22 is opposite to the second direction Y, so that the clamping groove 32 and the clamping protrusion 22 can be aligned according to the position of the clamping protrusion 22 when the electrode module 30 is mounted, thereby achieving the positioning and mounting effects.

Specifically, the clamping protrusion 22 and the clamping groove 32 are all arranged along the first direction X in an extending manner, after the clamping groove 32 is aligned with the clamping protrusion 22, the clamping groove 32 can slide along the extending direction of the clamping protrusion 22, so that the electrode module 30 can be more easily assembled in the mounting space 13, and the clamping protrusion 22 plays a guiding role of a sliding rail in the assembling process.

As shown in fig. 2, the circuit breaker according to the embodiment of the present utility model, wherein the electrode module 30 has a plurality of mounting groove assemblies 33, further comprises: the middle cover 50, the middle cover 50 has a plurality of first mounting screw holes 51, the plurality of first mounting screw holes 51 are arranged in a one-to-one correspondence with the plurality of mounting groove assemblies 33 and are opposite to each other in position, and each first mounting screw hole 51 is connected with the corresponding mounting groove assembly 33 through a mounting screw 52.

In specific implementation, the middle cover 50 of the circuit breaker is covered on the base 10 and the electrode module 30, the middle cover 50 is fixedly connected with the electrode module 30 through the mounting screw 52, and the electrode module 30 can be stably mounted in the mounting space 13, so that the middle cover 50 can be stably covered on the base 10 and the electrode module 30 after being mounted, and the stability of the whole structure of the circuit breaker is ensured.

Optionally, the middle cover 50 of the circuit breaker may be engaged with the side plate 12 of the base 10, during assembling the circuit breaker, the middle cover 50 may be first engaged with the side plate 12 to perform positioning and temporary fixing of the middle cover 50, so that the first mounting screw hole 51 of the middle cover 50 can be aligned with the corresponding mounting groove assembly 33, and the middle cover 50 will not move during assembling, and after the middle cover 50 is engaged, fixing between the middle cover 50 and the electrode module 30 is performed.

As shown in fig. 2, the circuit breaker according to the embodiment of the present utility model further includes: the surface cover 60, the surface cover 60 has a plurality of second mounting screw holes 61, the plurality of second mounting screw holes 61 and the plurality of first mounting screw holes 51 are arranged in a one-to-one correspondence and opposite positions, the electrode module 30 is mounted in the mounting space 13 in the assembled state of the circuit breaker, the base 10, the middle cover 50 and the surface cover 60 are sequentially arranged along the first direction X, and each second mounting screw hole 61 is connected with the corresponding first mounting screw hole 51 and the corresponding mounting groove assembly 33 through the mounting screw 52.

In particular, in the assembled state of the circuit breaker, the middle cover 50 is arranged on the base 10 along the first direction X, and is fixedly connected with the base 10 through the electrode module 30, the surface cover 60 is arranged on the middle cover 50, and the correspondingly arranged second mounting screw holes 61, first mounting screw holes 51 and mounting groove assemblies 33 are connected through the mounting screws 52, so that the surface cover 60, the middle cover 50 and the base 10 are fixedly mounted, each part of the circuit breaker can be stably mounted in the assembled state of the circuit breaker, the surface cover 60 cannot be blown off by gas generated by breaking action in the breaking process of the circuit breaker, and the electrode module 30 can be stably arranged in the mounting space 13.

As shown in fig. 1, the circuit breaker according to the embodiment of the present utility model further includes a plurality of mounting portions 34 protruding from the electrode module 30, where the plurality of mounting portions 34 are disposed in one-to-one correspondence with the plurality of mounting groove assemblies 33, and each mounting groove assembly 33 is disposed on top of the corresponding mounting portion 34 along the first direction X.

In specific implementation, the mounting portion 34 protrudes from the main functional component of the electrode module 30, the mounting groove assembly 33 is disposed at the top of the corresponding mounting portion 34, the position of the mounting portion 34 and the mounting groove assembly 33 does not affect the main function of the circuit breaker implemented by the electrode module 30, and the electrode module 30 can be connected with the face cover 60 and the middle cover 50 through the mounting screw 52, so that the connection function is achieved.

As shown in fig. 1 and 2, the mounting groove assembly 33 includes a first mounting groove 331, a second mounting groove 332 and a mounting nut 333, the first mounting groove 331 extends along a first direction X, the second mounting groove 332 extends along a second direction Y and intersects the first mounting groove 331, and the mounting nut 333 is clamped in the second mounting groove 332.

In particular, when the mounting nut 333 is engaged in the second mounting groove 332 extending in the second direction Y, the mounting screw 52 can extend into the first mounting groove 331 and be mounted downward in the first direction X until the mounting nut 333 in the second mounting groove 332 is screwed, thereby achieving the fixed mounting of the face cover 60, the middle cover 50 and the electrode module 30. The first mounting groove 331, the second mounting groove 332 and the mounting nut 333 are arranged, so that the inner surface of the first mounting groove 331 is not required to be set into an internal thread structure when the mounting groove assembly 33 is manufactured, the manufacturing process is simplified, the mounting nut 333 is only required to be clamped in the second mounting groove 332 when the assembly is performed, the internal structure of the electrode module 30 is not damaged like the process of arranging the thread structure, and the integrity of the electrode module 30 is ensured.

As shown in fig. 3 and fig. 4, in the circuit breaker according to the embodiment of the present utility model, the electrode module 30 has a moving contact arc striking plate 35, the moving contact arc striking plate 35 has a bending structure, and the bending structure of the moving contact arc striking plate 35 encloses to form a first fastening space 351; the circuit breaker further comprises: the first fastening member 70, the first fastening member 70 is disposed through the two spaced side plates 12 along the third direction Z and passes through the first fastening space 351 in the electrode module 30, and the first fastening member 70 is used for improving the strength of the electrode module 30 at the moving contact striking plate 35. The first fastening space 351 provides a penetrating space for the first fastening member 70, so that interference with the moving contact arc striking plate 35, which affects normal operation of the moving contact arc striking plate 35, can be avoided when the first fastening member 70 penetrates the electrode module 30.

As shown in fig. 3 and 4, in the circuit breaker according to the embodiment of the utility model, the electrode module 30 has a fixed contact 36, the fixed contact 36 has a bent structure, and the bent structure of the fixed contact 36 encloses to form a second fastening space 361; the circuit breaker further comprises: and a second fastening member 80, wherein the second fastening member 80 is inserted through the two spaced side plates 12 in the third direction Z and through the second fastening space 361 in the electrode module 30, and the second fastening member 80 is used for improving the strength of the electrode module 30 at the stationary contact 36. The second fastening space 361 provides a penetrating space for the second fastening member 80, so that interference between the second fastening member 80 and the fixed contact 36 during penetrating of the electrode module 30 can be avoided, and normal operation of the fixed contact 36 is affected.

In specific implementation, when the circuit breaker works, the moving contact arc striking plate 35 and the fixed contact 36 of the electrode module 30 generate electric arcs, gas generating materials at two sides of the moving contact arc striking plate 35 and the fixed contact 36 generate a large amount of gas under the action of the electric arcs, and the shell of the electrode module 30 is damaged by the impact of gas flow, so that the first fastener 70 and the second fastener 80 can respectively stabilize and fasten the structure at the moving contact arc striking plate 35 and the structure at the fixed contact 36, and the situation that the whole circuit breaker fails due to the fact that the gas flow breaks through the shells of the electrode module 30 at the two positions is avoided.

Moreover, the fixing member 40 and the mounting screw 52 fix the parts of the circuit breaker along the first direction X, and the first fastening member 70 and the second fastening member 80 fix the electrode modules 30, the side plates 12 and the fixing plate 20 interposed between the electrode modules 30 in the third direction Z, and since the first fastening member 70 and the second fastening member 80 extend along the third direction Z and penetrate through the electrode modules 30, the side plates 12 and the fixing plate 20, the electrode modules 30 do not move along the first direction X and the second direction Y relative to the side plates 12 and the fixing plate 20, thereby ensuring the overall stability of the circuit breaker.

Specifically, the stationary contact 36 has a U-shaped structure, and the stationary contact 36 having the U-shaped structure can accelerate arc movement.

Specifically, the first and second fasteners 70 and 80 are screw structures or rivet structures, and the case of the electrode module 30 can be fastened by screwing or riveting.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

In the foregoing, only the specific embodiments of the present utility model are described, and it will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the systems, modules and units described above may refer to the corresponding processes in the foregoing method embodiments, which are not repeated herein. It should be understood that the scope of the present utility model is not limited thereto, and any equivalent modifications or substitutions can be easily made by those skilled in the art within the technical scope of the present utility model, and they should be included in the scope of the present utility model.

Claims (10)

1. A circuit breaker, the circuit breaker comprising:

the base (10), the base (10) comprises a bottom plate (11) and a plurality of side plates (12) connected with the bottom plate (11) at preset angles, and the bottom plate (11) extends along a first horizontal plane;

the fixing plate (20) is connected to the bottom plate (11) in a preset angle crossing manner, the bottom plate (11), the side plates (12) and the fixing plate (20) are enclosed to form an installation space (13), the fixing plate (20) is provided with fixing holes (21), the fixing holes (21) are arranged in an extending manner along a first direction (X), and the first direction (X) is perpendicular to the first horizontal plane;

an electrode module (30) arranged in the installation space (13), wherein the electrode module (30) is provided with a clamping part (31) which is arranged in a protruding manner, and the clamping part (31) is arranged opposite to the fixing hole (21);

the fixing piece (40) is provided with a press joint (41) and a rod part (42), the press joint (41) is clamped and fixed with the clamping part (31), and the rod part (42) is coupled and connected with the fixing hole (21).

2. The circuit breaker according to claim 1, wherein the fixing plate (20) has a plurality of fixing holes (21) arranged at intervals along a second direction (Y), the electrode module (30) has a plurality of clamping portions (31) arranged at intervals along the second direction (Y), the fixing holes (21) are arranged in one-to-one correspondence with the clamping portions (31), and each fixing hole (21) is connected with the corresponding clamping portion (31) through the fixing member (40).

3. The circuit breaker according to claim 1, characterized in that the electrode module (30) has a concavely arranged clamping groove (32), the clamping portion (31) being arranged protruding from the surface of the clamping groove (32).

4. A circuit breaker according to claim 3, characterized in that the fixing plate (20) has a protruding clamping projection (22), the clamping projection (22) being adapted to the shape of the clamping groove (32), and the clamping projection (22) being arranged opposite to the clamping groove (32), the fixing hole (21) being identical to the arrangement of the clamping projection (22) in a second direction (Y).

5. The circuit breaker according to claim 1, wherein the electrode module (30) has a plurality of mounting slot assemblies (33), the circuit breaker further comprising:

the middle cover (50), middle cover (50) have a plurality of first installation screw (51), a plurality of first installation screw (51) with a plurality of mounting groove subassembly (33) one-to-one and the relative setting of position, each first installation screw (51) with corresponding mounting groove subassembly (33) are connected through mounting screw (52).

6. The circuit breaker of claim 5, further comprising:

the surface cover (60), the surface cover (60) has a plurality of second installation screw (61), and is a plurality of second installation screw (61) with a plurality of first installation screw (51) one-to-one and the relative setting of position in under the assembled state of circuit breaker electrode module (30) install in installation space (13), base (10) with well lid (50) with surface cover (60) are followed first direction (X) sets gradually, each second installation screw (61) with corresponding first installation screw (51) and corresponding mounting groove subassembly (33) are passed through installation screw (52) are connected.

7. The circuit breaker according to claim 5, wherein the electrode module (30) further has a plurality of mounting portions (34) provided in a protruding manner, the plurality of mounting portions (34) being provided in one-to-one correspondence with the plurality of mounting groove assemblies (33), each of the mounting groove assemblies (33) being provided on top of the corresponding mounting portion (34) along the first direction (X).

8. The circuit breaker of claim 5, wherein the mounting slot assembly (33) includes a first mounting slot (331), a second mounting slot (332), and a mounting nut (333), the first mounting slot (331) extending along the first direction (X), the second mounting slot (332) extending along the second direction (Y) and intersecting the first mounting slot (331), the mounting nut (333) being clamped in the second mounting slot (332).

9. The circuit breaker according to claim 1, characterized in that the electrode module (30) has a moving contact striking plate (35), the moving contact striking plate (35) is of a bent structure, and the bent structure of the moving contact striking plate (35) encloses to form a first fastening space (351); the circuit breaker further comprises:

the first fastening piece (70) penetrates through the side plates (12) arranged at two intervals along the third direction (Z) and penetrates through the first fastening space (351) in the electrode module (30), and the first fastening piece (70) is used for improving the strength of the electrode module (30) at the moving contact arc striking piece (35).

10. The circuit breaker according to claim 1, characterized in that the electrode module (30) has a stationary contact (36), the stationary contact (36) is of a bent structure, and the bent structure of the stationary contact (36) encloses a second fastening space (361); the circuit breaker further comprises:

and a second fastening member (80), wherein the second fastening member (80) is arranged along a third direction (Z) in a penetrating manner on the two side plates (12) arranged at intervals and penetrates through the second fastening space (361) in the electrode module (30), and the second fastening member (80) is used for improving the strength of the electrode module (30) at the fixed contact (36).