Voltage sampling device and circuit breaker

Abstract

A voltage sampling device and a circuit breaker relate to the technical field of low-voltage apparatuses. The utility model provides a voltage sampling device. The voltage sampling device comprises a body and a shell arranged outside the body in a sleeving mode. The body comprises a first sampling plate, the first sampling plate is used for being electrically connected with a wiring copper bar of the circuit breaker, an elastic conductive part is arranged on one side, close to the wiring copper bar, of the first sampling plate, and the first sampling plate is connected with the wiring copper bar through the elastic conductive part; the first sampling board is connected with a main control module of the circuit breaker, and the first sampling board can collect voltage information of the wiring copper bar and transmit the voltage information to the main control module of the circuit breaker. According to the voltage sampling device, the connection process between the wiring copper bar and the first sampling plate is more efficient and convenient, and the connection stability is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, and in particular to a voltage sampling device and a circuit breaker. Background Art

[0002] Whether the operating voltage of the circuit breaker is within the normal threshold range directly affects the safe operation of the power grid. Therefore, sampling the operating voltage of the circuit breaker and analyzing the voltage stability and waveform quality are important contents in the mechanical characteristics detection of the circuit breaker.

[0003] The voltage sampling of the existing circuit breaker is connected by welding wires between the copper busbar and the first sampling plate, and then connected to the detection device signal through the first sampling plate. However, the welding wire connection method has a complicated installation process and is easy to fall off, which reduces the installation efficiency and assembly stability. Utility Model Content

[0004] The purpose of the utility model is to provide a voltage sampling device and a circuit breaker, which eliminates the welding of the wiring copper busbar and the first sampling plate, so that the connection process between the wiring copper busbar and the first sampling plate is more efficient and convenient, and the connection stability is stronger.

[0005] The embodiment of the utility model is achieved as follows:

[0006] In one aspect of the utility model, a voltage sampling device is provided, comprising a main body and a shell sleeved on the outside of the main body; the main body comprises a first sampling plate, the first sampling plate is used to be electrically connected to the wiring copper bus of the circuit breaker, an elastic conductive part is provided on the side of the first sampling plate close to the wiring copper bus, and the first sampling plate is connected to the wiring copper bus through the elastic conductive part; the first sampling plate is connected to the main control module of the circuit breaker, and the first sampling plate can collect voltage information of the wiring copper bus and transmit the voltage information to the main control module of the circuit breaker.

[0007] Optionally, the main body also includes a second sampling board electrically connected to the first sampling board, the second sampling board is connected to the main control module of the circuit breaker, the first sampling board can collect voltage information of the wiring copper busbar, and transmit the voltage information to the main control module of the circuit breaker through the second sampling board.

[0008] Optionally, the elastic conductive member is a spring, which is arranged along the arrangement direction of the first sampling plate and the wiring copper busbar, with one end of the spring abutting against the first sampling plate and the other end abutting against the wiring copper busbar.

[0009] Optionally, the voltage sampling device further comprises a guide column, which is arranged along the arrangement direction of the first sampling plate and the wiring copper bar, the end of the guide column is passed through the first sampling plate, and the spring is sleeved on the outer wall of the guide column.

[0010] Optionally, the elastic conductive member is a spring sheet, one side of the spring sheet abuts against the first sampling plate and the other side abuts against the wiring copper busbar, so that the elastic direction of the spring sheet is arranged along the arrangement direction of the first sampling plate and the wiring copper busbar.

[0011] Optionally, the spring piece includes a first elastic part, a second elastic part and a connecting part, the connecting part is arc-shaped, the first elastic part and the second elastic part are respectively connected to two ends of the connecting part, and there is a gap between the first elastic part and the second elastic part; the second elastic part abuts against the first sampling plate, and the first elastic part abuts against the end of the wiring copper busbar.

[0012] Optionally, a wiring groove is further recessed on the main body, and the wiring groove is arranged on a side of the first sampling plate away from the elastic conductive member, and the wiring groove is used to lay out the wiring harness of the first sampling plate.

[0013] Optionally, a signal interface is provided on the second sampling board, and the signal interface is used to plug in a signal connector, one end of the signal connector is connected to the second sampling board, and the other end is connected to the main control module of the circuit breaker, so that the voltage information is transmitted to the main control module of the circuit breaker.

[0014] Optionally, a card slot is provided on the periphery of the main body, and a buckle is correspondingly provided on the periphery of the shell, the buckle is adapted to the card slot, and the main body and the shell can be snap-connected through the buckle and the card slot.

[0015] Another aspect of the utility model provides a circuit breaker, including a wiring copper bar, a main control module and a voltage sampling device, wherein the end of the wiring copper bar is connected to a first sampling board of the voltage sampling device through an elastic conductive member of the voltage sampling device to collect voltage information of the wiring copper bar; the first sampling board is connected to the main control module to output the voltage information of the wiring copper bar to the main control module.

[0016] Optionally, the circuit breaker further includes a wiring module, and the setting direction of the first sampling plate is adapted to the setting direction of the wiring module.

[0017] The beneficial effects of the utility model include at least one of the following:

[0018] The present application provides a voltage sampling device, including a main body and a shell sleeved on the outside of the main body; the main body includes a first sampling plate, the first sampling plate is used to be electrically connected to the wiring copper bus of the circuit breaker, and an elastic conductive member is provided on the side of the first sampling plate close to the wiring copper bus, and the first sampling plate is connected to the wiring copper bus through the elastic conductive member; the first sampling plate is connected to the main control module of the circuit breaker, and the first sampling plate can collect voltage information of the wiring copper bus, and transmit the voltage information to the main control module of the circuit breaker. The voltage sampling device obtained by the above design cancels the welding between the wiring copper bus and the first sampling plate, so that the connection process between the wiring copper bus and the first sampling plate is more efficient and convenient, and the connection stability is stronger.

[0019] The present application also provides a circuit breaker, including a wiring copper bar, a main control module and a voltage sampling device, wherein the end of the wiring copper bar is connected to the first sampling board of the voltage sampling device through the elastic conductive member of the voltage sampling device to collect the voltage information of the wiring copper bar; the first sampling board is connected to the main control module to output the voltage information of the wiring copper bar to the main control module. The circuit breaker obtained by the above design has a voltage sampling device that cancels the welding between the wiring copper bar and the first sampling board, making the connection process between the wiring copper bar and the first sampling board more efficient and convenient, and the connection stability is stronger. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 One of the structural schematic diagrams of the voltage sampling device provided in the embodiment of the utility model;

[0022] Figure 2 A schematic diagram of the structure of the main body of the voltage sampling device provided by an embodiment of the utility model;

[0023] Figure 3 A schematic diagram of the structure of the housing of the voltage sampling device provided by an embodiment of the utility model;

[0024] Figure 4 This is the second structural diagram of the voltage sampling device according to the embodiment of the utility model;

[0025] Figure 5 It is the structural schematic diagram of A;

[0026] Figure 6 This is a schematic diagram of the structure of the wiring trough of the voltage sampling device according to an embodiment of the utility model.

[0027] Icon: 100-voltage sampling device; 110-main body; 111-first sampling plate; 112-second sampling plate; 1121-signal interface; 113-elastic conductive member; 1131-guide column; 1132-first elastic part; 1133-second elastic part; 1134-connecting part; 114-slot; 115-wiring groove; 120-housing; 121-buckle; 200-wiring busbar; 210-wiring module. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0031] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0032] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Please refer to Figure 1 The present embodiment provides a voltage sampling device 100, comprising a main body 110 and a shell 120 sleeved on the outside of the main body 110; the main body 110 comprises a first sampling plate 111, the first sampling plate 111 is used to be electrically connected to the wiring copper bus 200 of the circuit breaker, and an elastic conductive member 113 is provided on the side of the first sampling plate 111 close to the wiring copper bus 200, and the first sampling plate 111 is connected to the wiring copper bus 200 through the elastic conductive member 113; the first sampling plate 111 is connected to the main control module of the circuit breaker, and the first sampling plate 111 can collect voltage information of the wiring copper bus 200 and transmit the voltage information to the main control module of the circuit breaker.

[0035] Specifically, the present application provides a voltage sampling device 100, which includes a body 110 and a shell 120, wherein the shell 120 is sleeved on the outside of the body 110 and is detachably connected to the body 110, and the shell 120 can provide a certain degree of protection for the body 110.

[0036] like Figure 2 As shown, the body 110 includes a first sampling plate 111, which is used to be electrically connected to the wiring copper bus 200 of the circuit breaker, and the first sampling plate 111 is connected to the main control module of the circuit breaker.

[0037] In the existing voltage sampling device, welding wire is usually used to weld the sampling plate and the wiring copper busbar of the circuit breaker to collect the voltage information of the wiring copper busbar; however, such a connection method is inefficient, easy to fall off, and has poor stability; while the voltage sampling device 100 provided in the present application is provided with an elastic conductive member 113 on the side of the first sampling plate 111 close to the wiring copper busbar 200, one end of the elastic conductive member 113 can be connected to the first sampling plate 111, and the other end can be connected to the end of the wiring copper busbar 200, so that the first sampling plate 111 can be connected to the wiring copper busbar 200 through the elastic conductive member 113, which makes the connection process more efficient and convenient, and also more stable and reliable.

[0038] After the first sampling plate 111 is connected to the copper busbar 200 through the elastic conductive member 113 , the first sampling plate 111 can collect voltage information of the copper busbar 200 and transmit the voltage information to the main control module of the circuit breaker to achieve communication with other functional modules.

[0039] It should be noted that, in the embodiment of the present application, the body 110 also includes a second sampling board 112 electrically connected to the first sampling board 111, the second sampling board 112 is connected to the main control module of the circuit breaker, and the first sampling board 111 can collect the voltage information of the wiring copper bar 200, and transmit the voltage information to the main control module of the circuit breaker through the second sampling board 112. Through such a setting, communication with other functional modules can also be achieved. Through the setting of the second sampling board 112, it is convenient to achieve multiple data sampling, so that the functionality of the voltage sampling device 100 is stronger and the wiring is more orderly.

[0040] The present application provides a voltage sampling device 100, including a body 110 and a shell 120 sleeved on the outside of the body 110; the body 110 includes a first sampling plate 111 and a second sampling plate 112, the first sampling plate 111 is used to be electrically connected to the wiring copper bar 200 of the circuit breaker, and the first sampling plate 111 is provided with an elastic conductive member 113 on one side close to the wiring copper bar 200, and the first sampling plate 111 is connected to the wiring copper bar 200 through the elastic conductive member 113; the first sampling plate 111 is connected to the main control module of the circuit breaker, and the first sampling plate 111 can collect voltage information of the wiring copper bar 200 and transmit the voltage information to the main control module of the circuit breaker. The voltage sampling device 100 obtained by the above design cancels the welding of the wiring copper bar 200 and the first sampling plate 111, so that the connection process between the wiring copper bar 200 and the first sampling plate 111 is more efficient and convenient, and the connection stability is stronger.

[0041] In a specific embodiment of the present application, the elastic conductive member 113 is a spring, which is arranged along the arrangement direction of the first sampling plate 111 and the wiring copper busbar 200 , with one end of the spring abutting against the first sampling plate 111 and the other end abutting against the wiring copper busbar 200 .

[0042] Specifically, Figure 1 Shown and Figure 2 The elastic conductive member 113 of the present application can be a spring, which is vertically arranged along the setting direction of the first sampling plate 111 and the wiring copper busbar 200, so that one end of the spring abuts against the first sampling plate 111 and the other end abuts against the wiring copper busbar 200 to achieve the connection between the first sampling plate 111 and the wiring copper busbar 200; and the spring has a certain elasticity and is not easy to break, so that the connection process between the wiring copper busbar 200 and the first sampling plate 111 is more efficient and convenient, and the connection stability is stronger.

[0043] Furthermore, the voltage sampling device 100 also includes a guide column 1131 , which is arranged along the arrangement direction of the first sampling plate 111 and the wiring copper bus 200 , the end of the guide column 1131 is inserted into the first sampling plate 111 , and the spring is sleeved on the outer wall of the guide column 1131 .

[0044] Specifically, Figure 2 As shown, the voltage sampling device 100 also includes a guide column 1131, which is arranged along the setting direction of the first sampling plate 111 and the wiring copper bus 200, so as to be the same as the setting direction of the spring; the end of the guide column 1131 is penetrated through the first sampling plate 111 and extends to be arranged vertically with the first sampling plate 111, so that the setting of the guide column 1131 is more stable; the spring can be sleeved on the outer wall of the guide column 1131 to play a certain limiting and fixing role on the spring.

[0045] In another specific embodiment of the present application, the elastic conductive member 113 is a spring, one side of the spring abuts against the first sampling plate 111 and the other side abuts against the wiring copper bus 200, so that the elastic direction of the spring is set along the setting direction of the first sampling plate 111 and the wiring copper bus 200.

[0046] Specifically, Figure 4 As shown, the elastic conductive member 113 of the present application can also be a spring, and the elastic direction of the spring is set along the setting direction of the first sampling plate 111 and the wiring copper bus 200, so as to provide a buffering force along the connection direction of the first sampling plate 111 and the wiring copper bus 200; one side of the spring is abutted against the first sampling plate 111, and the other side is abutted against the wiring copper bus 200, so as to realize the connection between the first sampling plate 111 and the wiring copper bus 200; and the spring has a certain elasticity and is not easy to break, so that the connection process between the wiring copper bus 200 and the first sampling plate 111 is more efficient and convenient, and the connection stability is stronger.

[0047] Furthermore, the spring piece includes a first elastic portion 1132, a second elastic portion 1133 and a connecting portion 1134, the connecting portion 1134 is arc-shaped, the first elastic portion 1132 and the second elastic portion 1133 are respectively connected to the two ends of the connecting portion 1134, and there is a gap between the first elastic portion 1132 and the second elastic portion 1133; the second elastic portion 1133 abuts against the first sampling plate 111, and the first elastic portion 1132 abuts against the end of the wiring copper bus 200.

[0048] Specifically, Figure 5 As shown, the spring piece has an arc-shaped structure, which includes a first elastic portion 1132, a second elastic portion 1133 and a connecting portion 1134; wherein the connecting portion 1134 is arc-shaped, and the first elastic portion 1132 and the second elastic portion 1133 are respectively connected to the two ends of the connecting portion 1134, so that the spring piece is roughly C-shaped, and there is a gap between the first elastic portion 1132 and the second elastic portion 1133 to ensure sufficient buffering force; the second elastic portion 1133 of the spring piece abuts against the first sampling plate 111, and the first elastic portion 1132 abuts against the end of the wiring copper bus 200 to achieve the connection between the first sampling plate 111 and the wiring copper bus 200.

[0049] Preferably, the body 110 is further provided with a wiring groove 115 , which is disposed on a side of the first sampling plate 111 away from the elastic conductive member 113 , and is used for laying out a wiring harness of the first sampling plate 111 .

[0050] Specifically, Figure 6 As shown, the body 110 is further provided with a wiring groove 115, which is arranged on the side of the first sampling plate 111 away from the elastic conductive member 113, and the first sampling plate 111 can be covered on the wiring groove 115; the first sampling plate 111 is a PCB board, and the wiring harness on the PCB board can be arranged in the wiring groove 115. The arrangement of the wiring groove 115 not only makes the circuit of the voltage sampling device 100 more neat, but also makes the wiring harness of the voltage sampling device 100 protected by the wiring groove 115 and not easily damaged.

[0051] In one possible implementation mode of the present application, a signal interface 1121 is provided on the second sampling board 112, and the signal interface 1121 is used to plug in a signal connector, one end of the signal connector is connected to the second sampling board 112, and the other end is connected to the main control module of the circuit breaker, so that the voltage information is transmitted to the main control module of the circuit breaker.

[0052] Specifically, Figure 1 and Figure 2 As shown, the second sampling board 112 is also provided with a signal interface 1121, and the signal interface 1121 is communicatively connected with the second sampling board 112. The setting of the signal interface 1121 makes it easier to insert a signal connector, and the signal connector enables the second sampling board 112 to communicate with the main control module of the circuit breaker, so that the voltage information collected by the first sampling board 111 is input into the main control module of the circuit breaker through the second sampling board 112, so as to realize the communication connection between the second sampling board 112 and other modules, and facilitate the analysis of the voltage information.

[0053] For example, a slot 114 is provided at the periphery of the body 110 , and a buckle 121 is correspondingly provided at the periphery of the shell 120 . The buckle 121 is adapted to the slot 114 , and the body 110 and the shell 120 can be connected by the buckle 121 and the slot 114 .

[0054] Specifically, Figure 2 and Figure 3As shown, the periphery of the body 110 is provided with a slot 114, and correspondingly, the periphery of the shell 120 is provided with a buckle 121, and the buckle 121 is adapted to the slot 114, so that the buckle 121 can be clamped in the slot 114, and then the body 110 and the shell 120 are connected by the buckle 121. It should be noted that the number and position of the buckle 121 and the slot 114 correspond one to one, and the present application does not impose any restrictions on the specific number and position of the buckle 121 and the slot 114, as long as the shell 120 can be stably connected by the buckle 121 with the body 110.

[0055] Another aspect of the utility model provides a circuit breaker, including a wiring copper busbar 200, a main control module and the above-mentioned voltage sampling device 100, wherein the end of the wiring copper busbar 200 is connected to the first sampling board 111 of the voltage sampling device 100 through the elastic conductive member 113 of the voltage sampling device 100 to collect voltage information of the wiring copper busbar 200; the first sampling board 111 is connected to the main control module to output the voltage information of the wiring copper busbar 200 to the main control module.

[0056] Specifically, the present application also provides a circuit breaker, which includes a wiring copper busbar 200, a main control module and a voltage sampling device 100; the first sampling plate 111 of the voltage sampling device 100 is connected to the wiring copper busbar 200 through a connecting piece; the second sampling plate 112 of the voltage sampling device 100 is connected to the main control module; after the first sampling plate 111 and the wiring copper busbar 200 are connected through an elastic conductive piece 113, the first sampling plate 111 can collect voltage information of the wiring copper busbar 200 and transmit the voltage information to the main control module of the circuit breaker to realize communication with other functional modules.

[0057] The circuit breaker designed as above has a voltage sampling device 100 in which welding of the copper busbar 200 and the first sampling plate 111 is eliminated, so that the connection process between the copper busbar 200 and the first sampling plate 111 is more efficient and convenient, and the connection stability is stronger.

[0058] The circuit breaker further includes a wiring module 210 , and the setting direction of the first sampling plate 111 is adapted to the setting direction of the wiring module 210 .

[0059] Specifically, Figure 3As shown, the circuit breaker also includes a wiring module 210, which is plugged into the wiring copper bus 200 to form a good electrical circuit; the setting direction of the first sampling plate 111 is compatible with the setting direction of the wiring module 210. In the actual installation process, the number of first sampling plates 111 can be matched according to the level of the wiring module 210 to ensure that the voltage value of the electrical circuit formed by plugging each wiring module 210 and the wiring copper bus 200 is sampled and detected, making the use of the circuit breaker safer and more reliable. At the same time, such a setting method makes the wiring of the circuit breaker simpler and the assembly more convenient, while improving the space utilization rate.

[0060] The above description is only an optional embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

[0061] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

Claims

1. A voltage sampling device, characterized in that: The invention comprises a body (110) and a shell (120) sleeved on the outside of the body (110); the body (110) comprises a first sampling plate (111), the first sampling plate (111) is used to be electrically connected to a copper busbar (200) of a circuit breaker, a side of the first sampling plate (111) close to the copper busbar (200) is provided with an elastic conductive member (113), the first sampling plate (111) is connected to the copper busbar (200) via the elastic conductive member (113); the first sampling plate (111) is connected to a main control module of the circuit breaker, the first sampling plate (111) can collect voltage information of the copper busbar (200), and transmit the voltage information to the main control module of the circuit breaker.

2. The voltage sampling device according to claim 1, characterized in that: The body (110) further comprises a second sampling board (112) electrically connected to the first sampling board (111); the second sampling board (112) is connected to a main control module of the circuit breaker; the first sampling board (111) is capable of collecting voltage information of the wiring copper busbar (200), and transmitting the voltage information to the main control module of the circuit breaker via the second sampling board (112).

3. The voltage sampling device according to claim 1, characterized in that: The elastic conductive member (113) is a spring, which is arranged along the arrangement direction of the first sampling plate (111) and the wiring copper busbar (200), with one end of the spring abutting against the first sampling plate (111) and the other end abutting against the wiring copper busbar (200).

4. The voltage sampling device according to claim 3, characterized in that: The voltage sampling device (100) further comprises a guide column (1131), wherein the guide column (1131) is arranged along the arrangement direction of the first sampling plate (111) and the wiring copper busbar (200), an end of the guide column (1131) is inserted into the first sampling plate (111), and the spring is sleeved on the outer wall of the guide column (1131).

5. The voltage sampling device according to claim 1, characterized in that: The elastic conductive member (113) is a spring sheet, one side of which abuts against the first sampling plate (111) and the other side of which abuts against the wiring copper busbar (200), so that the elastic direction of the spring sheet is arranged along the arrangement direction of the first sampling plate (111) and the wiring copper busbar (200).

6. The voltage sampling device according to claim 5, characterized in that: The spring sheet comprises a first elastic portion (1132), a second elastic portion (1133) and a connecting portion (1134); the connecting portion (1134) is arc-shaped; the first elastic portion (1132) and the second elastic portion (1133) are respectively connected to two ends of the connecting portion (1134); and a gap exists between the first elastic portion (1132) and the second elastic portion (1133); the second elastic portion (1133) abuts against the first sampling plate (111); and the first elastic portion (1132) abuts against the wiring copper busbar (200).

7. The voltage sampling device according to claim 1, characterized in that: The body (110) is also provided with a wiring groove (115), which is arranged on a side of the first sampling plate (111) away from the elastic conductive member (113), and is used for arranging a wiring harness of the first sampling plate (111).

8. The voltage sampling device according to claim 2, characterized in that: The second sampling board (112) is provided with a signal interface (1121), and the signal interface (1121) is used to insert a signal connector, one end of the signal connector is connected to the second sampling board (112), and the other end is connected to the main control module of the circuit breaker, so that the voltage information is transmitted to the main control module of the circuit breaker.

9. The voltage sampling device according to claim 1, characterized in that: The periphery of the main body (110) is provided with a snap groove (114), and the periphery of the shell (120) is correspondingly provided with a snap buckle (121), the snap buckle (121) is adapted to the snap groove (114), and the main body (110) and the shell (120) can be snap-connected with each other through the snap buckle (121) and the snap groove (114).

10. A circuit breaker, characterized in that: The invention comprises a wiring copper busbar (200), a main control module and a voltage sampling device (100) according to any one of claims 1 to 9, wherein the end of the wiring copper busbar (200) is connected to a first sampling board (111) of the voltage sampling device (100) through an elastic conductive member (113) of the voltage sampling device (100) to collect voltage information of the wiring copper busbar (200); and the first sampling board (111) is connected to the main control module to output the voltage information of the wiring copper busbar (200) to the main control module.

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