CN114496664B

CN114496664B - Circuit breaker device

Info

Publication number: CN114496664B
Application number: CN202111565522.2A
Authority: CN
Inventors: 李基民; 尹龙强; 邱方驰; 黄腾; 吴艺; 郑诚然; 阳浩; 黄倩
Original assignee: Shenzhen Power Supply Co ltd
Current assignee: Shenzhen Power Supply Co ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2024-01-19
Anticipated expiration: 2041-12-20
Also published as: CN114496664A

Abstract

The invention relates to a circuit breaker device comprising: the circuit breaker comprises a circuit breaker main body, a shell, a baffle cover and a floating part. Wherein the shell is sleeved outside the breaker main body; the shield is sleeved outside the shell; opposite ends of the floating part are respectively connected with the inner wall of the baffle cover and the outer wall of the shell. The breaker device isolates the breaker main body from the outside through the shell and the shielding cover; due to the floating part, a buffer space exists between the shell and the blocking cover, so that the breaker main body can resist larger external force impact, the normal operation of the breaker main body is protected, and the service life of the breaker main body is prolonged. The circuit breaker device can isolate the circuit breaker main body from external interference to a certain extent, and can be applied to environments such as high temperature, humidity, inflammability and explosiveness.

Description

Circuit breaker device

Technical Field

The invention relates to the technical field of power electronics, in particular to a circuit breaker device.

Background

With the continuous popularization of power grid systems and the construction of foundation settings, power equipment is becoming an important field of leading-edge scientific research.

In a power grid system, a circuit breaker refers to a switching device capable of switching on, off, and carrying current under normal loop conditions and capable of switching on, off, and carrying current under abnormal loop conditions for a prescribed period of time. The circuit breaker can be used for distributing electric energy, starting the asynchronous motor infrequently, protecting a power line, the motor and the like, and automatically cutting off the circuit when serious overload or short circuit, undervoltage and other faults occur, and the functions of the circuit breaker are equivalent to the combination of a fuse type switch, an over-under-heating relay and the like. And the parts are not required to be changed after breaking the fault current. Currently, a wide range of applications are available.

In the generation, transportation and use of electricity, power distribution is an extremely important link. The distribution system comprises a transformer and various high-low voltage electrical equipment, and the circuit breaker is an electrical appliance with larger use amount and wider use range. However, in the installation process of the circuit breaker, the circuit breaker is generally easy to be impacted by external force such as collision, and the circuit breaker has poor self-protection performance, so that the circuit breaker has high damage rate and the like, thereby influencing the operation of a power system and the supply of electric energy.

Disclosure of Invention

Accordingly, it is necessary to provide a circuit breaker device against the problem that the circuit breaker is easily damaged by collision.

A circuit breaker apparatus comprising:

a breaker main body;

the shell is sleeved outside the breaker main body;

the shielding cover is sleeved outside the shell;

and the opposite ends of the floating part are respectively connected with the inner wall of the baffle cover and the outer wall of the shell.

According to the circuit breaker device, the shell is sleeved outside the circuit breaker main body, the blocking cover is sleeved outside the shell, and the opposite ends of the floating part are respectively connected with the inner wall of the blocking cover and the outer wall of the shell, so that the circuit breaker main body is isolated from the outside through the shell and the blocking cover; due to the floating part, a buffer space exists between the shell and the blocking cover, so that the breaker main body can resist larger external force impact, the normal operation of the breaker main body is protected, and the service life of the breaker main body is prolonged. Further, the breaker device can isolate the breaker main body from external interference to a certain extent, and can be applied to environments such as high temperature, humidity, inflammability and explosiveness.

In one embodiment, the floating part is made of soft materials, and a sealing cavity is arranged inside the floating part.

In one embodiment, the housing is a plastic material.

In one embodiment, the circuit breaker device further comprises a monitoring component, the monitoring component is fixedly connected to the circuit breaker main body, the monitoring component comprises a box body, a control main board, a display screen, a temperature and humidity sensor and a monitoring camera, the display screen, the temperature and humidity sensor and the monitoring camera are electrically connected to the control main board, a cavity is formed in the box body, the control main board is arranged in the cavity, a monitoring hole and a display hole are formed in the side wall of the box body, the monitoring camera extends out of the monitoring hole, and the display screen is arranged in the display hole and is arranged back to the cavity.

In one embodiment, a first inserting part is arranged on the inner wall of the shielding cover, and a first inserting groove is arranged on the outer wall of the shell; and/or the number of the groups of groups,

the inner wall of the shielding cover is provided with a second inserting part, the outer wall of the box body is provided with a second slot, and the second inserting part is inserted into the second slot.

In one embodiment, the outer surface of the housing is provided with heat conducting holes.

In one embodiment, a connection block is arranged in the heat conduction hole, and one side of the connection block is connected with the heat conduction hole.

In one embodiment, a connecting channel is arranged in the connecting block, the connecting channel penetrates through one side, close to the shell, of the connecting block and one side, far away from the shell, of the connecting block, and a dust-proof plate is arranged in the connecting channel.

In one embodiment, the dust-proof plate is provided with a heat dissipation hole, and the heat dissipation hole penetrates through one side of the dust-proof plate, which is close to the shell, and one side of the dust-proof plate, which is far away from the shell.

In one embodiment, a fire extinguishing cavity is further arranged in the dust-proof plate, and a flame retardant substance is arranged in the fire extinguishing cavity; and/or the number of the groups of groups,

the inner wall of the shielding cover is coated with a flame-retardant coating.

Drawings

Fig. 1 is a schematic structural view of a circuit breaker device according to an embodiment;

fig. 2 is a top cross-sectional view of a circuit breaker apparatus of an embodiment;

fig. 3 is a top cross-sectional view of a circuit breaker apparatus of an embodiment;

fig. 4 is a schematic cross-sectional structure of a connection block of a circuit breaker apparatus according to an embodiment.

In the figure:

10. a breaker main body; 11. a housing; 12. a heat conduction hole; 20. a shield; 21. a first insertion portion; 22. a second insertion portion; 23. a connection port; 30. a floating part; 40. a monitoring component; 41. a display screen; 42. monitoring a camera; 50. a connecting block; 51. a connection channel; 52. a dust-proof plate; 53. a fire extinguishing chamber; 54. a flame retardant substance; 55. and the heat dissipation holes.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a circuit breaker device according to an embodiment of the invention. An embodiment of the present invention provides a circuit breaker apparatus including: the circuit breaker includes a circuit breaker main body 10, a case 11, a shield 20, and a floating unit 30.

The circuit breaker is a switching device which can not only switch on and switch off normal load current and overload current, but also switch on and switch off short circuit current. Besides the control function, the circuit breaker has certain protection functions such as overload, short circuit, undervoltage, leakage protection and the like. The circuit breaker may be classified as a frame circuit breaker or a molded case circuit breaker according to a structural form.

Further, in the present embodiment, since the molded case circuit breaker has a feature of being able to automatically cut off the current after the current exceeds the trip setting, the circuit breaker main body 10 is the molded case circuit breaker.

Further, due to the wide application of the internet of things in industrial production, the breaker main body 10 is an internet of things breaker. Because the internet of things circuit breaker has the characteristic that can operate at wireless terminal to control the break-make of circuit breaker, consequently, through using the internet of things circuit breaker, make the circuit breaker device of this embodiment possess intelligent characteristics, simplify the flow of operating circuit breaker main part 10. The working state of the breaker main body 10 is visualized by the wireless terminal, so that the breaker device of the embodiment is more convenient, quick and clear to use.

Further, the casing 11 is sleeved outside the breaker main body 10, and a first slot is formed in the outer wall of the casing 11. Further, the housing 11 is made of plastic material. Because the plastic material has stronger elasticity, a certain protection can be formed on the breaker main body 10 initially, and the breaker main body 10 is prevented from being damaged due to larger impact. And because the plastic material has insulativity, the shell 11 of the plastic material is sleeved outside the breaker main body 10, a certain degree of insulation effect can be achieved, and when the breaker main body 10 is in a short circuit or electric leakage state, the breaker main body 10 is isolated from the outside through the shell 11, so that the safety of the breaker device of the embodiment is improved.

In one embodiment, the shield 20 is sleeved outside the housing 11. The shielding cover 20 is sleeved outside the breaker main body 10, so that the breaker main body 10 is isolated from external interference to a certain extent, and the shielding cover can be applied to environments such as high temperature, humidity, inflammability and explosiveness. Specifically, the shield 20 is made of a transparent material, so that the inside of the shield 20 can be easily observed, and the operating condition of the breaker main body 10 can be known. Further, the shielding cover 20 is made of transparent colloid material, so that the anti-collision effect of the circuit breaker device is further improved.

Further, the inner wall of the shield 20 is provided with a first insertion portion 21, the first insertion portion 21 is inserted into the first slot, and the positions of the first insertion portion 21 and the first slot are correspondingly arranged, so that the breaker main body 10 is fixed in the shield 20. The shield 20 is connected with the housing 11 through the first inserting part 21 and the first slot, so that the operation flow is simplified, and the mounting and the dismounting are convenient. Further, one end of the first insertion portion 21 is fixedly connected to the inner wall of the shield 20. Alternatively, the first insert portion 21 may be integrally formed with the shield 20, or the first insert portion 21 may be fixedly connected by threaded connection, riveting, clamping, bonding, or the like.

Referring to fig. 2, fig. 2 is a top cross-sectional view of the circuit breaker device of the present embodiment, in which the shield 20 is provided with a notch, and the notch is disposed on a side of the shield 20 away from the main panel of the circuit breaker main body 10. Since the breaker body 10 is generally installed in the electricity meter box, one side of the breaker body 10 is generally fixedly connected to the electricity meter box. Therefore, when the circuit breaker device of the embodiment is installed, the notch is installed towards the electric meter box, and the side wall of the electric meter box and the shielding cover 20 can be sealed in the same way, so that the effects of heat insulation, moisture insulation, explosion prevention and the like are achieved.

Referring to fig. 3, fig. 3 is a top cross-sectional view of a circuit breaker device according to another embodiment, wherein the shield 20 is a fully enclosed shield, so that the circuit breaker body 10 can realize protection of the circuit breaker body 10 without being limited by environmental factors.

Further, the shield 20 is also provided with a connection port 23. By opening the connection port 23 in the shield 20, the operator can open the shield 20 and insert his or her hand or tool into the connection port 23 to operate the breaker main body 10. Further, the connection port 23 can also have a certain heat dissipation effect, preventing the breaker main body 10 from malfunctioning due to an overheat problem.

The floating part 30, the opposite ends of the floating part 30 are connected to the inner wall of the shield 20 and the outer wall of the housing 11 respectively, so that a buffer space exists between the housing 11 and the shield 20, the breaker main body 10 can withstand larger external force impact, the normal operation of the breaker main body 10 is protected, and the service life of the breaker main body 10 is prolonged. Further, the floating portion 30 is a soft material, thereby further achieving the shock absorbing effect of the circuit breaker apparatus of the present embodiment. Further, a sealed cavity is provided in the floating portion 30, and gas, liquid, etc. can be filled in the sealed cavity, so as to improve the damping capacity of the floating portion 30.

In the circuit breaker device, the casing 11 is sleeved outside the circuit breaker main body 10, the shielding cover 20 is sleeved outside the casing 11, and the opposite ends of the floating part 30 are respectively connected with the inner wall of the shielding cover 20 and the outer wall of the casing 11, so that the circuit breaker main body 10 is isolated from the outside through the casing 11 and the shielding cover 20; due to the floating part 30, a buffer space exists between the shell 11 and the shielding cover 20, so that the breaker main body 10 can resist larger external force impact, the normal operation of the breaker main body 10 is protected, and the service life of the breaker main body 10 is prolonged. Further, the circuit breaker device can isolate the circuit breaker main body 10 from external interference to a certain extent, and can be applied to environments such as high temperature, humidity, inflammability and explosiveness.

In one embodiment, the circuit breaker device further includes a monitoring assembly 40, the monitoring assembly 40 is fixedly connected to the circuit breaker main body 10, and the monitoring assembly 40 includes a box body, a control main board, a display screen 41, a temperature and humidity sensor, and a monitoring camera 42. The display screen 41, the temperature and humidity sensor and the monitoring camera 42 are electrically connected to the control main board, the cavity is formed in the box body, the control main board is arranged in the cavity, the monitoring hole and the display hole are formed in the side wall of the box body, the monitoring camera 42 extends out of the monitoring hole, and the display screen 41 is arranged in the display hole and is arranged in the cavity in a back mode. The monitoring camera 42 and the temperature and humidity sensor are transmitted to the display screen 41 through the control main board, so that the display screen 41 can show the monitoring picture of the monitoring camera 42 and the actual measurement value of the temperature and humidity sensor. In this embodiment, the monitoring assembly 40 is fixedly connected to the top of the breaker body 10, thereby facilitating the observation of the indication of the display screen 41. In other embodiments, the monitoring assembly 40 may also be adapted to the mounting position of the monitoring assembly 40 relative to the breaker body 10 according to the actual installation environment. Further, in the present embodiment, the case is connected to the housing 11 by bolts, thereby achieving fixation of the monitoring assembly 40 with respect to the breaker main body 10.

Further, the monitoring component 40 may further include an internet of things module, and the internet of things module is electrically connected to the control motherboard. Data measured by the temperature and humidity sensor and images acquired by the monitoring camera 42 are transmitted to the internet of things module through the control main board and are sent to the wireless terminal through the internet of things module, so that an operator can monitor the temperature and humidity of the installation environment and the surrounding environment on the wireless terminal without approaching the circuit breaker device. Further, the information of a plurality of internet of things modules is transmitted to the same wireless terminal, so that fewer operators are used for monitoring more breaker devices, the problem of the breaker devices can be known more quickly, faults can be removed as soon as possible, manpower is saved, and meanwhile, the accuracy and convenience of manual operation are improved.

In one embodiment, the inner wall of the shielding cover 20 is provided with a second inserting portion 22, the outer wall of the box body is provided with a second inserting slot, and the second inserting portion 22 is inserted into the second inserting slot. Thereby further stabilizing the position of the breaker body 10 in the shield 20 and preventing damage and noise caused by shaking of the breaker body 10 in the shield 20 of the present embodiment. The shield 20 is connected with the box body through the second inserting part 22 and the second inserting groove, so that the operation flow is simplified, and the mounting and the dismounting are convenient.

In one embodiment, the outer surface of the housing 11 is provided with heat conducting holes 12. Because the electronic heat of a certain degree can appear in the working process of the breaker main body 10, the heat of the breaker main body 10 can be timely discharged through the heat conducting holes 12 arranged on the outer surface of the shell 11, and the occurrence of dangerous situations such as short circuit or explosion caused by overheat of the temperature of the breaker main body 10 is prevented.

In one embodiment, a connection block 50 is disposed in the heat conduction hole 12, and one side of the connection block 50 is connected to the heat conduction hole 12. Specifically, the connection block 50 is made of metal, and the metal has strong thermal conductivity, so that the heat of the breaker main body 10 is more conveniently discharged. Further, an external thread is provided on the outer side of the connection block 50, an internal thread is provided in the heat conduction hole 12, and the connection block 50 is in threaded connection with the heat conduction hole 12. Alternatively, the other side of the connection block 50 may abut against the inner wall of the shield 20, or the other side of the connection block 50 may be freely disposed in the medium between the shield 20 and the housing 11. Specifically, abutting the other side of the connection block 50 against the inner wall of the shield 20 can transfer the heat of the connection block 50 to the shield 20, so that the heat is transferred to the external environment more quickly. Specifically, the other side of the connecting block 50 is freely arranged in the medium between the shielding cover 20 and the shell 11, so that the circuit breaker device is more convenient and rapid in the assembly process, and the assembly efficiency of the circuit breaker device is improved.

Referring to fig. 4, fig. 4 is a schematic cross-sectional view of a connecting block 50 according to an embodiment of the invention. In one embodiment, a connection channel 51 is provided in the connection block 50, the connection channel 51 penetrates through a side of the connection block 50 close to the housing 11 and a side of the connection block 50 far from the housing 11, and a dust-proof plate 52 is provided in the connection channel 51. Since the structure of the breaker body 10 is fine, there is a possibility that the operation of the breaker body 10 is affected after fine dust, small insects, etc. enter the breaker body 10. Seriously, short circuit, explosion, etc. of the breaker body 10 may be caused, which hinders life electricity, industrial production electricity, etc., affecting people's work and life. By providing the dust-proof plate 52 inside the connection passage 51, it is possible to effectively prevent foreign matters such as dust and insects from entering the housing 11 to interfere with the operation of the breaker main body 10, and to some extent, reduce the occurrence of dangerous situations such as short-circuiting or explosion of the breaker main body 10. In other embodiments, an insulating plate, a metal plate, a moisture absorbing plate, etc. may be disposed in the connecting channel 51, and may be adjusted according to the actual installation environment of the circuit breaker device, so that the circuit breaker device can ensure normal operation in different application scenarios.

In one embodiment, the dust-proof plate 52 is provided with a heat dissipation hole 55, and the heat dissipation hole 55 penetrates through one side of the dust-proof plate 52 close to the housing 11 and one side of the dust-proof plate 52 far from the housing 11. By arranging the heat dissipation holes 55 in the dust-proof plate 52, the dust-proof plate 52 is arranged in the connecting block 50, and the heat dissipation holes 55 are arranged in the dust-proof plate 52, so that heat absorbed by the connecting block 50 can be further discharged through the heat of the breaker main body 10, the safety of the breaker device in the using process is improved, the probability of faults of the breaker device is reduced, and the service life is prolonged.

In one embodiment, a fire extinguishing chamber 53 is also provided in the dust guard 52, and a fire retardant substance 54 is provided in the fire extinguishing chamber 53. When a fire occurs inside the circuit breaker device, the fire-retardant substance 54 in the fire-extinguishing chamber 53 is released, and a fire-retardant effect is achieved. Further, in the present embodiment, the flame retardant substance 54 is sand. In other embodiments, the flame retardant substance 54 may also be a macromolecular flame retardant or the like.

In one embodiment, the inner wall of the shield 20 is coated with a flame retardant coating. Because the general application environment of the breaker main body 10 is in an ammeter box, more wires and electrical appliances are distributed around, once the breaker main body 10 burns due to short circuit and other reasons, surrounding electronic devices can be damaged by fire, and larger loss and damage are caused. In this embodiment, by coating the flame retardant coating on the inside of the shield 20, when the breaker main body 10 burns, the fire is prevented from spreading to surrounding electronic devices, so that the fire is stopped inside the breaker device, and property loss and casualties are greatly reduced. In other embodiments, the inner wall of the shield 20 may be coated with an insulating coating, a waterproof coating, etc., thereby enriching the application scenarios of the circuit breaker device. Further, the inner wall of the shield 20 may be coated with a stacked combination of a flame retardant coating, an insulating coating, a waterproof coating, etc., so that the circuit breaker device is safer, and the shield 20 can further protect the circuit breaker main body 10.

In accordance with the foregoing, the present invention provides a circuit breaker apparatus according to an embodiment, including: the circuit breaker body 10, the housing 11, the shield 20, the float 30, and the monitoring assembly 40 including the internet of things module. The housing 11 and the shield 20 may be directly connected with the first slot through the first insertion portion 21, or the housing 11 and the shield 20 may be connected through the second insertion portion 22 of the shield 20 and the second slot of the monitor assembly 40, and the fixed connection between the monitor assembly 40 and the housing 11. In the circuit breaker device of the embodiment, the casing 11 is sleeved outside the circuit breaker main body 10, the blocking cover 20 is sleeved outside the casing 11, the casing 11 and the blocking cover 20 are connected in a matched manner, and the opposite ends of the floating part 30 are respectively connected with the inner wall of the blocking cover 20 and the outer wall of the casing 11, so that the circuit breaker main body 10 is isolated from the outside through the casing 11 and the blocking cover 20. Due to the floating part 30, a buffer space exists between the shell 11 and the shielding cover 20, so that the breaker main body 10 can resist larger external force impact, the normal operation of the breaker main body 10 is protected, and the service life of the breaker main body 10 is prolonged. Further, the circuit breaker device can isolate the circuit breaker main body 10 from external interference to a certain extent, and can be applied to environments such as high temperature, humidity, inflammability and explosiveness. Further, through setting up the monitoring component 40 including thing networking module, make the handheld wireless terminal of staff can carry out on-line monitoring to the application environment of circuit breaker device, discover the abnormal conditions that circuit breaker device surrounding environment exists as early as possible, can handle the abnormality as early as possible, prevent the spread of trouble or dangerous case, have characteristics intelligent and instantaneity, convenience more.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. A circuit breaker apparatus, the circuit breaker apparatus comprising:

a breaker main body;

the shell is sleeved outside the breaker main body;

the shielding cover is sleeved outside the shell;

the opposite ends of the floating part are respectively connected with the inner wall of the baffle cover and the outer wall of the shell; the floating part is made of soft materials, and a sealing cavity is arranged in the floating part and is used for filling gas or liquid;

the shell is made of plastic materials, the shielding cover is made of transparent colloid materials, a first inserting part is arranged on the inner wall of the shielding cover, a first inserting groove is formed in the outer wall of the shell, the shielding cover is a totally-enclosed shielding cover or is provided with a notch, and the notch is used for being installed and connected with the ammeter box to be sealed, so that a closed cavity is formed in the inner cavity of the shielding cover.

2. The circuit breaker device of claim 1, further comprising a monitor assembly fixedly connected to the circuit breaker body, wherein the monitor assembly comprises a box body, a control main board, a display screen, a temperature and humidity sensor and a monitor camera, wherein the display screen, the temperature and humidity sensor and the monitor camera are electrically connected to the control main board, a cavity is formed in the box body, the control main board is arranged in the cavity, a monitor hole and a display hole are formed in the side wall of the box body, the monitor camera extends out of the monitor hole, and the display screen is arranged in the display hole and is arranged back to the cavity.

3. The circuit breaker device of claim 2, wherein the monitoring assembly further comprises an internet of things module electrically connected to the control motherboard.

4. The circuit breaker device of claim 3, further comprising a wireless terminal, wherein information of a plurality of the internet of things modules is transferred to the same wireless terminal.

5. The circuit breaker device according to claim 2, wherein the inner wall of the shield is provided with a second insertion portion, the outer wall of the case is provided with a second insertion slot, and the second insertion portion is inserted into the second insertion slot.

6. The circuit breaker device of claim 1, wherein an outer surface of the housing is provided with a thermally conductive aperture.

7. The circuit breaker device of claim 6, wherein a connection block is disposed in the heat conduction hole, and one side of the connection block is connected to the heat conduction hole.

8. The circuit breaker device according to claim 7, wherein a connection channel is provided in the connection block, the connection channel penetrates through a side of the connection block, which is close to the housing, and a side of the connection block, which is far away from the housing, and a dust-proof plate is provided in the connection channel.

9. The circuit breaker device of claim 8, wherein the dust guard is provided with a heat dissipation hole penetrating through a side of the dust guard near the housing and a side of the dust guard away from the housing.

10. The circuit breaker device of claim 8, wherein a fire extinguishing chamber is further provided in the dust guard, and a fire retardant substance is provided in the fire extinguishing chamber; and/or the number of the groups of groups,

the inner wall of the shielding cover is coated with a flame-retardant coating.