CN114496664A

CN114496664A - Circuit breaker device

Info

Publication number: CN114496664A
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 Bureau Co Ltd
Current assignee: Shenzhen Power Supply Bureau Co Ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-05-13
Anticipated expiration: 2041-12-20
Also published as: CN114496664B

Abstract

The invention relates to a circuit breaker arrangement comprising: the circuit breaker comprises a circuit breaker main body, a shell, a shield and a floating part. Wherein, the outer casing is sleeved outside the breaker main body; the baffle cover is sleeved outside the shell; the two 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 circuit breaker device isolates the circuit breaker main body from the outside through the shell and the shield; owing to be equipped with the portion that floats, make and have buffer space between shell and the fender cover to make the circuit breaker main part can withstand great external force and strike, protect the normal operating of circuit breaker main part, prolong the life of circuit breaker main part. The circuit breaker device can isolate the circuit breaker main body from external interference to a certain degree, and can be applied to environments such as high temperature, humidity, flammability 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 basic settings, power equipment gradually becomes the key field of advanced scientific and technological research.

In the grid system, a circuit breaker means a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and closing, carrying, and opening/closing a current under an abnormal circuit condition within a prescribed time. The circuit breaker can be used for distributing electric energy, starting an asynchronous motor infrequently, protecting a power supply circuit, the motor and the like, and automatically cutting off a circuit when faults such as serious overload, short circuit, undervoltage and the like occur, and the function of the circuit breaker is equivalent to the combination of a fuse type switch, an over-under-heat relay and the like. Furthermore, no parts need to be changed after breaking the fault current. At present, it has been widely used.

In the generation, transmission and use of electricity, power distribution is an extremely important link. The power distribution system comprises a transformer and various high-voltage and low-voltage electrical equipment, and the circuit breaker is an electrical appliance with large use amount and wide use range. However, in the installation process of the circuit breaker, the circuit breaker is usually easily subjected to external force impact such as collision, the protection performance of the circuit breaker is not good, the damage rate of the circuit breaker is high, and the like, so that the operation and the electric energy supply of the power system are affected.

Disclosure of Invention

In view of this, it is necessary to provide a circuit breaker device that addresses the problem that a circuit breaker is easily damaged by a collision.

A circuit breaker apparatus, comprising:

a circuit breaker main body;

the shell is sleeved outside the breaker main body;

the blocking cover is sleeved outside the shell;

the floating part, the relative both ends of floating part connect respectively in keep off the inner wall of cover with the outer wall of shell.

In the circuit breaker device, the outer shell is sleeved outside the circuit breaker main body, the blocking cover is sleeved outside the outer shell, and the two opposite ends of the floating part are respectively connected to the inner wall of the blocking cover and the outer wall of the outer shell, so that the circuit breaker main body is isolated from the outside through the outer shell and the blocking cover; owing to be equipped with the portion that floats, make and have buffer space between shell and the fender cover to make the circuit breaker main part can withstand great external force and strike, protect the normal operating of circuit breaker main part, prolong the life of circuit breaker main part. Further, the circuit breaker device can isolate the circuit breaker main body from external interference to a certain degree, and can be applied to environments such as high temperature, humidity, flammability and explosiveness.

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

In one embodiment, the housing is made of 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 arranged in the cavity in a back-to-back mode.

In one embodiment, the inner wall of the baffle cover is provided with a first inserting part, and the outer wall of the shell is provided with a first inserting groove; and/or the presence of a gas in the gas,

the inner wall of the blocking cover is provided with a second inserting portion, the outer wall of the box body is provided with a second slot, and the second inserting portion 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 connecting block is arranged in the heat conduction hole, and one side of the connecting block is connected to the heat conduction hole.

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

In one embodiment, the dust guard is provided with heat dissipation holes, and the heat dissipation holes penetrate through one side of the dust guard close to the shell and one side of the dust guard far away from the shell.

In one embodiment, a fire extinguishing cavity is further arranged in the dust guard plate, and a flame retardant substance is arranged in the fire extinguishing cavity; and/or the presence of a gas in the gas,

the inner wall of the shield is coated with a flame retardant coating.

Drawings

Fig. 1 is a schematic structural diagram of a circuit breaker apparatus 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 view illustrating a connection block of a circuit breaker apparatus according to an embodiment.

In the figure:

10. a circuit 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 connecting port; 30. a floating part; 40. a monitoring component; 41. a display screen; 42. a surveillance camera; 50. connecting blocks; 51. a connecting channel; 52. a dust-proof plate; 53. a fire extinguishing chamber; 54. a flame retardant substance; 55. and (4) heat dissipation holes.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

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

The breaker is a switching device which can not only connect and disconnect normal load current and overload current, but also connect and disconnect short-circuit current. The circuit breaker has certain protection functions in the circuit, such as overload, short circuit, undervoltage and leakage protection, besides the function of starting control. The circuit breaker may be classified into 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 characteristic of being capable of automatically cutting off the current after the current exceeds the trip setting, the circuit breaker main body 10 is a molded case circuit breaker.

Further, the breaker main body 10 is an internet of things breaker due to the wide application of the internet of things in industrial production. Because thing networking circuit breaker has and can operate at wireless terminal to the characteristic of the break-make of control circuit breaker, consequently, through using thing networking circuit breaker, make the circuit breaker device of this embodiment possess intelligent characteristics, simplify the flow of operating circuit breaker main part 10. Through the visual operating condition to circuit breaker main part 10 at wireless terminal, make the use of the circuit breaker device of this embodiment convenient and fast more, clear.

Further, the outer shell 11 is sleeved outside the breaker main body 10, and a first slot is formed in an outer wall of the outer shell 11. Further, the housing 11 is made of plastic material. Because the plastic material has stronger elasticity to can tentatively form certain protection to circuit breaker main part 10, prevent that circuit breaker main part 10 from damaging because of receiving great impact. And because the plastic material has insulating nature, locate circuit breaker main part 10's outside with the shell 11 cover of plastic material, can play the insulating effect of certain degree, when circuit breaker main part 10 appears the short circuit or the situation of electric leakage, make circuit breaker main part 10 keep apart with the external world through shell 11, promoted the circuit breaker device's of this embodiment security.

In one embodiment, the shield 20 is disposed outside the housing 11. The outside of the circuit breaker main body 10 is sleeved with the shield 20, so that the circuit breaker main body 10 is isolated from the outside to a certain extent, and the circuit breaker main body can be applied to environments such as high temperature, humidity, flammability and explosiveness. Specifically, the shield 20 is made of a transparent material, so that the inside of the shield 20 can be observed conveniently, and the working condition of the breaker main body 10 can be known. Further, the shield 20 is made of transparent colloid, 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 first insertion portion 21 and the first slot are correspondingly disposed, so that the breaker body 10 is fixed inside the shield 20. The baffle cover 20 is connected with the shell 11 through the first inserting part 21 and the first slot, so that the operation process is simplified, and the installation and the disassembly 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 inserting portion 21 and the shield 20 may be of an integral structure, or the first inserting portion 21 may be fixedly connected by screwing, riveting, clamping, bonding, or the like.

Referring to fig. 2, fig. 2 is a top cross-sectional view of the circuit breaker apparatus 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 circuit breaker main body 10 is generally installed in an electric meter box, and one side of the circuit breaker main body 10 is generally fixedly connected to the electric meter box. Therefore, the circuit breaker device of this embodiment is installed the breach towards the ammeter case when the installation, can form with fender cover 20 through the lateral wall of ammeter case equally and seal, plays thermal-insulated, wet and explosion-proof etc. effect.

Referring to fig. 3, fig. 3 is a top sectional view of a circuit breaker apparatus according to another embodiment, wherein the shield 20 is a fully enclosed shield, so that the circuit breaker main body 10 can be protected from environmental factors.

Further, the shield 20 is provided with a connection port 23. By opening the connection port 23 in the shield cover 20, the worker can insert a hand or a tool into the connection port 23 to operate the breaker main body 10 by opening the shield cover 20. Further, the connection port 23 can also provide a certain heat dissipation effect, thereby preventing the breaker body 10 from malfunctioning due to overheating.

The relative both ends of portion 30 that floats are connected respectively in the inner wall that keeps off cover 20 and the outer wall of shell 11 to the portion 30 that floats to make shell 11 and keep off and have buffer space between the cover 20, make circuit breaker main part 10 can keep out great external force and strike, protect circuit breaker main part 10's normal operating, prolong circuit breaker main part 10's life. Further, the floating portion 30 is made of a soft material, thereby further achieving the shock absorbing effect of the circuit breaker device of the present embodiment. Further, a sealed cavity is formed inside the floating portion 30, and the sealed cavity can be filled with gas, liquid and the like, so that the damping capacity of the floating portion 30 is improved.

In the circuit breaker device, the outer shell 11 is sleeved outside the circuit breaker main body 10, the blocking cover 20 is sleeved outside the outer shell 11, and the two opposite ends of the floating part 30 are respectively connected to the inner wall of the blocking cover 20 and the outer wall of the outer shell 11, so that the circuit breaker main body 10 is isolated from the outside through the outer shell 11 and the blocking cover 20; due to the arrangement of the floating portion 30, a buffer space exists between the outer shell 11 and the shield 20, so that the breaker main body 10 can withstand large external force impact, 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 apparatus 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, flammability and explosiveness.

In one embodiment, the circuit breaker apparatus 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. Display screen 41, temperature and humidity sensor and the equal electric connection of surveillance camera head 42 are in control mainboard, and the inside of box body is equipped with the cavity, and in the cavity was located to the control mainboard, the lateral wall of box body was opened there were monitor hole and display hole, and surveillance camera head 42 stretches out the monitor hole, and display screen 41 sets up in the display hole and sets up in the cavity dorsad. 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 measured value of the temperature and humidity sensor. In the present embodiment, the monitoring assembly 40 is fixedly attached to the top of the circuit breaker body 10 to facilitate viewing the display screen 41. In other embodiments, the monitoring assembly 40 may also adapt the installation position of the monitoring assembly 40 with respect to the circuit breaker main body 10 according to the actual installation environment. Further, in the present embodiment, the case is connected to the case 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 main board. Data that will temperature and humidity sensor record and the image transmission that surveillance camera head 42 acquireed to the thing networking module through the control mainboard to send to wireless terminal through thing networking module, make operating personnel need not to be close to the circuit breaker device and can realize monitoring the humiture and the surrounding environment of installation environment on wireless terminal. Further, the information of a plurality of thing networking modules all transmits to same wireless terminal to use operating personnel still less to monitor more circuit breaker device, can be faster learn circuit breaker device's problem, the manpower has been saved to trouble-shooting early, has promoted manual operation's accuracy and convenience simultaneously.

In one embodiment, the inner wall of the shield 20 is provided with a second insertion portion 22, the outer wall of the box body is provided with a second slot, and the second insertion portion 22 is inserted into the second slot. Therefore, the position of the breaker main body 10 in the shield 20 is further stabilized, and damage and noise caused by shaking of the breaker main body 10 in the shield 20 are prevented. The baffle cover 20 is connected with the box body through the second inserting part 22 and the second inserting groove, so that the operation process is simplified, and the installation and the disassembly are convenient.

In one embodiment, the outer surface of the housing 11 is provided with heat conduction holes 12. Because the electronic heat of certain degree can appear in the in-process of circuit breaker main part 10 work, through set up heat conduction hole 12 at the surface of shell 11, make the heat of circuit breaker main part 10 in time discharge, prevent that circuit breaker main part 10 from causing the emergence of dangerous condition such as short circuit or arouse the explosion owing to the temperature is overheated.

In one embodiment, a connection block 50 is disposed in the heat-transfer hole 12, and one side of the connection block 50 is connected to the heat-transfer hole 12. Specifically, the connection block 50 is made of metal, and has a relatively high thermal conductivity, so that the circuit breaker main body 10 can discharge heat more conveniently. Further, the outer side of the connecting block 50 is provided with external threads, the heat conduction hole 12 is internally provided with internal threads, and the connecting 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 is freely disposed in the medium between the shield 20 and the housing 11. Specifically, the other side of the connecting block 50 abuts against the inner wall of the shield 20, so that the heat of the connecting block 50 is transferred to the shield 20, and 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 shield 20 and the housing 11, so that the circuit breaker device is more convenient and faster in the assembling process, and the assembling efficiency of the circuit breaker device is improved.

Referring to fig. 4, fig. 4 is a schematic cross-sectional view illustrating a connecting block 50 according to an embodiment of the invention. In one embodiment, a connecting channel 51 is provided inside the connecting block 50, the connecting channel 51 penetrates through a side of the connecting block 50 close to the housing 11 and a side of the connecting block 50 far from the housing 11, and a dust-proof plate 52 is provided inside the connecting channel 51. Since the breaker main body 10 has a fine structure, fine dust, small insects, and the like may enter the breaker main body 10, and then the operation of the breaker main body 10 may be affected. Seriously, short circuit, explosion, etc. of the breaker main body 10 may be caused, which may hinder electricity for life, electricity for industrial production, etc., and affect work and life of people. By arranging the dust guard 52 in the connecting passage 51, foreign matters such as dust and bugs can be effectively prevented from entering the housing 11 to interfere with the operation of the breaker main body 10, thereby reducing the occurrence of short circuit or explosion of the breaker main body 10 to a certain extent. In other embodiments, the inside of the connection channel 51 may also be provided with an insulating plate, a metal plate, a moisture absorption plate, etc., which may be adjusted according to the actual installation environment of the circuit breaker device, so that the circuit breaker device can be ensured to operate normally in different application scenarios.

In one embodiment, the dust-proof plate 52 has heat dissipation holes 55, and the heat dissipation holes 55 penetrate through the side of the dust-proof plate 52 close to the housing 11 and the side of the dust-proof plate 52 far from the housing 11. Through opening the heat dissipation hole 55 in the dust guard 52, because the dust guard 52 is arranged in the connecting block 50, and the heat dissipation hole 55 is arranged in the dust guard 52, the heat absorbed by the connecting block 50 can be discharged through further promoting the heat of the circuit breaker main body 10, the safety of the circuit breaker device in the using process is improved, the probability of the circuit breaker device breaking is reduced, and the service life is prolonged.

In one embodiment, a fire extinguishing chamber 53 is further provided in the dust-proof plate 52, and a fire retardant substance 54 is provided in the fire extinguishing chamber 53. When a fire occurs inside the circuit breaker apparatus, the fire retardant substance 54 in the fire extinguishing chamber 53 is released, thereby achieving a fire retardant effect. Further, in the present embodiment, the flame retardant substance 54 is sand. In other embodiments, the flame retardant material 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 circuit breaker main body 10 is in an electric meter box, a large number of electric wires and electric appliances are distributed around the circuit breaker main body 10, once the circuit breaker main body 10 burns due to short circuit and other reasons, surrounding electronic devices are damaged by fire, and great loss and damage are caused. In this embodiment, the flame retardant coating is coated inside the shield 20, so that when the breaker main body 10 burns, the fire is prevented from spreading to surrounding electronic devices, the fire is stopped inside the breaker device, and property loss and casualties are reduced to a great extent. In other embodiments, the inner wall of the shield 20 may be coated with an insulating coating, a waterproof coating, or the like, thereby enriching the application scenarios of the circuit breaker apparatus. Further, the inner wall of the shield 20 may be coated with a combination of flame retardant coating, insulating coating, waterproof coating, and the like, so that the circuit breaker apparatus has more safety, and the shield 20 can further protect the circuit breaker main body 10.

According to the foregoing, 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, a floating portion 30, and a monitoring assembly 40 including an internet of things module. The shell 11 and the shield 20 can be directly connected in a matching manner through the first inserting portion 21 and the first slot, or the shell 11 and the shield 20 can be connected through the second inserting portion 22 of the shield 20 and the second slot of the monitoring component 40 in a matching manner and the fixed connection between the monitoring component 40 and the shell 11. The circuit breaker device of this embodiment establishes shell 11 through the overcoat at circuit breaker main part 10, establishes fender cover 20 at the outside cover of shell 11, and the cooperation is connected between shell 11 and the fender cover 20 to relative both ends through the portion of floating 30 are connected respectively in the inner wall of fender cover 20 and the outer wall of shell 11, make circuit breaker main part 10 and the external world between carry out completely cut off through shell 11 and fender cover 20. Due to the arrangement of the floating portion 30, a buffer space exists between the outer shell 11 and the shield 20, so that the breaker main body 10 can withstand large external force impact, 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 apparatus 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, flammability and explosiveness. Further, through setting up the monitoring subassembly 40 that includes 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 unusually as early as possible, prevent stretching of trouble or dangerous situation, have the characteristics of intellectuality and real-time, convenience more.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

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

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" 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 as used herein are for illustrative purposes only and do not denote a unique embodiment.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A circuit breaker apparatus, characterized in that the circuit breaker apparatus comprises:

a circuit breaker main body;

the shell is sleeved outside the breaker main body;

the baffle cover is sleeved outside the shell;

2. The circuit breaker apparatus of claim 1, wherein the floating portion is made of a soft material, and a sealed cavity is provided inside the floating portion.

3. The circuit breaker apparatus of claim 1, wherein the housing is a plastic material.

4. The circuit breaker device according to claim 1, further comprising a monitoring component, wherein 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 all electrically connected to the control main board, a cavity is arranged inside the box body, the control main board is arranged in the cavity, a monitoring hole and a display hole are formed in a 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 arranged in the cavity in a back-to-back manner.

5. The circuit breaker apparatus of claim 4 wherein the inner wall of the shield defines a first plug portion and the outer wall of the housing defines a first slot; and/or the presence of a gas in the gas,

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

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

8. The circuit breaker apparatus according to claim 7, wherein a connection channel is provided inside the connection block, the connection channel penetrates through a side of the connection block close to the housing and a side of the connection block away from the housing, and a dust guard is provided inside the connection channel.

9. The circuit breaker apparatus of claim 8, wherein the dust guard is provided with heat dissipation holes, and the heat dissipation holes penetrate through a side of the dust guard close to the housing and a side of the dust guard away from the housing.

10. The circuit breaker apparatus of claim 8, wherein a fire extinguishing chamber is further disposed in the dust guard, and a fire retardant substance is disposed in the fire extinguishing chamber; and/or the presence of a gas in the gas,

the inner wall of the shield is coated with a flame retardant coating.