Circuit breaker with earth leakage protection

Abstract

The utility model relates to the low-voltage electrical field, and discloses a circuit breaker with earth leakage protection, which comprises a circuit breaker bottom shell, a circuit breaker front cover hinged on the front side surface of the circuit breaker bottom shell, an observation window arranged in the middle of the front side surface of the circuit breaker front cover, and an observation cover hinged on the front side surface of the circuit breaker front cover corresponding to the upper part of the observation window, a screw mounting hole is fixedly connected in an inner cavity of the circuit breaker bottom shell, a circuit breaker protector is arranged on the screw mounting hole, a wiring port is formed in the upper side face of the circuit breaker protector, a circuit breaker switch is movably connected to the side, away from the circuit breaker bottom shell, of the circuit breaker protector, and the adaptability and reliability of equipment in the outdoor complex environment are remarkably improved. Due to the design, the operation process of a user is simplified, the safety of equipment is improved, the service life of the equipment is effectively prolonged, and the circuit breaker becomes a preferred product in the field of outdoor electrical protection.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical equipment, specifically a circuit breaker with leakage protection. Background Technology

[0002] In power systems, residual current circuit breakers (RCCBs) are critical safety devices that play a vital role in preventing electrical fires and ensuring personal safety. However, traditional RCCBs are often designed with indoor environments in mind, and their enclosure materials and protection levels are usually insufficient to meet the requirements of complex and variable outdoor climate conditions. When these devices are used in outdoor environments, such as industrial parks, construction sites, or rural power distribution systems, they must directly face the challenges of harsh weather conditions such as wind, rain, direct sunlight, drastic temperature changes, and high humidity.

[0003] Prolonged exposure to such an environment makes the internal circuit components of the residual current circuit breaker susceptible to moisture corrosion, leading to decreased insulation performance and even short circuits. At the same time, strong ultraviolet radiation accelerates the aging of the casing and internal materials, reducing the mechanical strength and electrical performance of the equipment. In addition, frequent temperature changes may also cause thermal expansion and contraction of internal components, leading to poor contact or mechanical failure. To address these issues, we propose a circuit breaker with residual current protection. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a circuit breaker with leakage current protection, which solves the aforementioned problems.

[0006] (II) Technical Solution

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a circuit breaker with leakage protection, comprising a circuit breaker base, a circuit breaker front cover hinged to the front side of the circuit breaker base, an observation window hollow in the middle of the front side of the circuit breaker front cover, an observation cover hinged above the observation window on the front side of the circuit breaker front cover, a screw mounting hole fixedly connected in the inner cavity of the circuit breaker base, a circuit breaker protector provided on the screw mounting hole, a wiring port opened on the upper side of the circuit breaker protector, and a circuit breaker switch movably connected to the side of the circuit breaker protector away from the circuit breaker base.

[0008] Preferably, mounting holes are provided at the four corners of the rear side of the circuit breaker base, and two symmetrically arranged outlet holes are provided on the bottom inner wall of the circuit breaker base. A puncture-proof dust plate is movably engaged in both the outlet holes and the mounting holes.

[0009] Preferably, the front ends of both sides of the circuit breaker bottom shell are arc-shaped and match the rear ends of both sides of the circuit breaker front cover. A rubber sealing strip is fixedly connected to the side of the circuit breaker bottom shell near the circuit breaker front cover, and a slot matching the rubber sealing strip is opened on the rear side of the circuit breaker front cover.

[0010] Preferably, a snap-fit ​​interface is fixedly connected to the front end of the lower side of the circuit breaker bottom shell, and a snap-fit ​​is fixedly connected to the rear end of the lower side of the circuit breaker front cover, wherein the snap-fit ​​and the snap-fit ​​interface are matched.

[0011] Preferably, both ends of the inner wall of the circuit breaker bottom shell are fixedly connected to water baffles, and the end of the water baffle near the front cover of the circuit breaker is arc-shaped and extends into the inner cavity of the front cover of the circuit breaker.

[0012] Preferably, the circuit breaker is fixedly connected to both the upper and lower ends of the side near the bottom shell of the circuit breaker with fixing buckles, and the circuit breaker is snapped into the screw mounting holes by the two fixing buckles.

[0013] Preferably, the observation cover is made of brown acrylic material.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a circuit breaker with leakage current protection, which has the following beneficial effects:

[0016] 1. This type of circuit breaker with leakage protection, through the hinged design of the circuit breaker's bottom shell and front cover, as well as the hollow observation window and transparent operating cover on the front cover, not only facilitates the user's inspection and replacement of internal components, but also allows the user to directly observe the circuit breaker's operating status without opening the front cover, greatly improving the convenience and safety of operation. Furthermore, the multiple sealing designs between the bottom shell and rear cover, including the rubber sealing strip, water baffle, and puncture-resistant dustproof plate, effectively prevent external impurities such as dust and moisture from damaging the internal circuitry, ensuring the stability of the circuit connection and the long-term stable operation of the equipment.

[0017] 2. This type of circuit breaker with leakage protection not only simplifies the installation and disassembly process, but also enhances the stability of the circuit breaker under vibration or impact, ensuring that the circuit breaker can accurately and promptly respond to abnormal conditions such as leakage or overload in the circuit, and quickly cut off the circuit through the circuit breaker switch, thereby effectively protecting the safety of the circuit and equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram showing the connection between the bottom shell and the front cover of the circuit breaker of this utility model;

[0020] Figure 3 This is a schematic diagram of the circuit breaker of this utility model;

[0021] Figure 4 This is a schematic diagram of the bottom shell of the circuit breaker of this utility model.

[0022] In the diagram: 1. Circuit breaker base; 2. Circuit breaker front cover; 3. Observation cover; 4. Clip; 5. Clip interface; 6. Circuit breaker protector; 7. Fixing clip; 8. Wiring port; 9. Circuit breaker switch; 10. Mounting hole; 11. Screw mounting hole; 12. Outlet hole; 13. Water baffle; 14. Rubber sealing strip. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4 A circuit breaker with leakage protection includes a circuit breaker base shell 1, a circuit breaker front cover 2 hinged to the front side of the circuit breaker base shell 1, an observation window in the middle of the front side of the circuit breaker front cover 2, an observation cover 3 hinged to the front side of the circuit breaker front cover 2 above the observation window, a screw mounting hole 11 fixedly connected in the inner cavity of the circuit breaker base shell 1, a circuit breaker protector 6 provided on the screw mounting hole 11, a wiring port 8 opened on the upper side of the circuit breaker protector 6, and a circuit breaker switch 9 movably connected to the side of the circuit breaker protector 6 away from the circuit breaker base shell 1.

[0025] Furthermore, mounting holes 10 are provided at the four corners of the rear side of the circuit breaker base 1, and two symmetrically arranged outlet holes 12 are provided on the bottom inner wall of the circuit breaker base 1. Both the outlet holes 12 and the mounting holes 10 are movably engaged with puncturable dustproof plates. These mounting holes not only facilitate fixing the circuit breaker to the wall or bracket, but also effectively prevent dust and fine particles from the external environment from entering the circuit breaker through the mounting holes, thus maintaining the cleanliness of the internal environment.

[0026] Furthermore, the front ends of both sides of the circuit breaker bottom shell 1 are arc-shaped and match the rear ends of both sides of the circuit breaker front cover 2. A rubber sealing strip 14 is fixedly connected to the side of the circuit breaker bottom shell 1 near the circuit breaker front cover 2. A slot matching the rubber sealing strip 14 is opened on the rear side of the circuit breaker front cover 2. The rubber sealing strip 14 fixedly connected to the side of the circuit breaker bottom shell 1 near the circuit breaker front cover 2 and the slot on the rear side of the circuit breaker front cover 2 form a tight waterproof barrier, effectively preventing water vapor penetration.

[0027] Furthermore, a snap-fit ​​interface 5 is fixedly connected to the front end of the lower side of the circuit breaker base 1, and a snap-fit ​​4 is fixedly connected to the rear end of the lower side of the circuit breaker front cover 2. The snap-fit ​​4 and the snap-fit ​​interface 5 are matched. The snap-fit ​​connection method is not only easy to operate, but also ensures a stable connection between the front cover and the base, and can maintain a tight closure even under vibration or impact.

[0028] Furthermore, water baffles 13 are fixedly connected to both ends of the inner wall of the circuit breaker bottom shell 1. The end of the water baffle 13 near the circuit breaker front cover 2 is arc-shaped and extends into the inner cavity of the circuit breaker front cover 2. Its arc-shaped design not only matches the shape of the inner cavity of the circuit breaker front cover 2, but also effectively blocks rainwater and other liquids that seep in from the gaps, further improving the waterproof performance of the circuit breaker.

[0029] Furthermore, the circuit breaker 6 is fixedly connected to both the upper and lower ends of the side near the bottom shell 1 of the circuit breaker with fixing clips 7, and the circuit breaker 6 is snapped into the screw mounting hole 11 by the two fixing clips 7.

[0030] Furthermore, the observation cover 3 is made of brown acrylic material. This material not only has good light transmittance, allowing users to clearly observe the working status of the circuit breaker, but also has excellent weather resistance, resisting strong outdoor ultraviolet radiation and harsh weather conditions, thereby extending the service life and aesthetic appearance of the circuit breaker.

[0031] Working Principle: This circuit breaker with leakage current protection achieves efficient and safe protection in complex outdoor environments through the carefully designed interlocking of its components. Firstly, the circuit breaker's base shell 1 and front cover 2 are hinged, allowing the front cover 2 to be easily opened and closed, facilitating the inspection and replacement of internal components. Simultaneously, a hollow observation window is provided on the front side of the front cover 2, along with an observation cover 3, allowing users to directly observe the circuit breaker's operating status without opening the front cover 2, greatly improving operational convenience and safety. The circuit breaker protector 6, as the core component of the circuit breaker, is securely fixed to the inner cavity of the circuit breaker's base shell 1 via screw mounting holes 11. A wiring port 8 on it is used to connect the power cord, realizing circuit connection. When abnormal conditions such as leakage or overload occur in the circuit, the circuit breaker 6 will respond quickly and disconnect the circuit in time through the circuit breaker switch 9, thereby effectively protecting the safety of the circuit and equipment. In order to adapt to the complex and ever-changing outdoor environment, mounting holes 10 are provided at the four corners of the rear side of the circuit breaker base 1, and two symmetrically arranged outlet holes 12 are also opened on the inner wall of the bottom side. All these holes are equipped with puncture-proof dust plates, which effectively prevent the intrusion of dust and impurities and keep the internal circuit clean and stable. In addition, the front ends of both sides of the circuit breaker base 1 are arc-shaped, which perfectly matches the rear ends of both sides of the circuit breaker front cover 2. Meanwhile, a rubber sealing strip 14 is fixedly connected to the side of the circuit breaker base 1 near the circuit breaker front cover 2, which fits tightly with the slot opened on the rear side of the circuit breaker front cover 2, further enhancing the sealing performance of the equipment and effectively preventing the intrusion of moisture. Water baffles 13 are also fixedly connected to both ends of the inner wall of the circuit breaker base 1, extending into the inner cavity of the circuit breaker front cover 2, forming an effective waterproof barrier that effectively blocks the entry of rainwater and other liquids. The circuit breaker protector 6 is securely fastened to the screw mounting holes 11 by the snap-fit ​​pieces 7 at both ends. This design not only facilitates the installation and disassembly of the circuit breaker protector 6 but also ensures its stability under vibration or impact. Finally, the observation cover 3 is made of brown acrylic material, which has good light transmittance and weather resistance. It ensures that users can clearly observe the working status of the circuit breaker and effectively resists strong outdoor ultraviolet radiation, thereby extending the service life of the equipment.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A circuit breaker with residual current protection, comprising a circuit breaker base (1), characterized in that: The circuit breaker base (1) is hinged to the front side of the circuit breaker front cover (2). The front side of the circuit breaker front cover (2) is hollow with an observation window. The front side of the circuit breaker front cover (2) is hinged to the observation cover (3) above the observation window. The inner cavity of the circuit breaker base (1) is fixedly connected to a screw mounting hole (11). A circuit breaker protector (6) is provided on the screw mounting hole (11). A wiring port (8) is opened on the upper side of the circuit breaker protector (6). A circuit breaker switch (9) is movably connected to the side of the circuit breaker protector (6) away from the circuit breaker base (1).

2. A circuit breaker with leakage protection according to claim 1, characterized in that: The circuit breaker base (1) has mounting holes (10) at the four corners of its rear side. The circuit breaker base (1) has two symmetrically arranged outlet holes (12) on its bottom inner wall. Both the outlet holes (12) and the mounting holes (10) are movably fitted with puncture-proof dust plates.

3. A circuit breaker with leakage protection according to claim 1, characterized in that: The front ends of the bottom shell (1) of the circuit breaker are arc-shaped and match the rear ends of the front cover (2) of the circuit breaker. A rubber sealing strip (14) is fixedly connected to the side of the bottom shell (1) of the circuit breaker near the front cover (2) of the circuit breaker. A slot matching the rubber sealing strip (14) is opened on the rear side of the front cover (2) of the circuit breaker.

4. A circuit breaker with leakage protection according to claim 3, characterized in that: The lower side front end of the circuit breaker bottom shell (1) is fixedly connected to a snap-fit ​​interface (5), and the lower side rear end of the circuit breaker front cover (2) is fixedly connected to a snap-fit ​​(4). The snap-fit ​​(4) and the snap-fit ​​interface (5) are matched.

5. A circuit breaker with leakage protection according to claim 1, characterized in that: Both ends of the inner wall of the circuit breaker bottom shell (1) are fixedly connected to baffles (13). The baffles (13) are arc-shaped at the end near the circuit breaker front cover (2) and extend into the inner cavity of the circuit breaker front cover (2).

6. A circuit breaker with leakage protection according to claim 1, characterized in that: The circuit breaker (6) has fixed buckles (7) at both the top and bottom ends on the side near the bottom shell (1) of the circuit breaker. The circuit breaker (6) is secured to the screw mounting hole (11) by the two fixed buckles (7).

7. A circuit breaker with leakage protection according to claim 1, characterized in that: The observation cover (3) is made of brown acrylic material.

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