Combined leakage circuit breaker

Abstract

The present invention relates to the technical field of circuit breakers, and in particular discloses a combined leakage circuit breaker, comprising a universal circuit breaker module and a leakage circuit breaker module, wherein the universal circuit breaker module has an inlet terminal and an outlet terminal, and the leakage circuit breaker module comprises a transformer component, a circuit breaker function component and a leakage function component, wherein the circuit breaker function component and the leakage function component are integrated to form an integrated leakage circuit breaker component, and the integrated leakage circuit breaker component has an input terminal and an output terminal, wherein the transformer component is located at the outlet terminal of the universal circuit breaker module, wherein the transformer component comprises a transformer, a current-carrying component and a wiring terminal, wherein the current-carrying component is passed through the transformer, wherein one end of the transformer is electrically connected to the universal circuit breaker module and the circuit breaker function component respectively, and the other end is connected to the wiring terminal, and wherein the transformer component, the universal circuit breaker module and the integrated leakage circuit breaker component are all detachably arranged.

Description

Technical Field

[0001] The invention relates to the technical field of circuit breakers, in particular to a combined leakage circuit breaker. Background Art

[0002] At present, the structure of leakage circuit breakers has two types: modular assembly or integrated assembly. Modular assembly generally includes a general circuit breaker module and a leakage release module. The general circuit breaker module and the leakage release module are connected by a long wire, which has large resistance and high temperature rise. The assembly volume is large and occupies a lot of space after installation in the distribution box, which limits the expansion of the line. Especially in multi-pole leakage protection products, the wiring is complicated and difficult to disassemble and assemble. The integrated assembly leakage circuit breaker on the market, although the leakage function volume is slightly reduced compared with the modular assembly, has a complex manufacturing process and difficult assembly, resulting in a generally long production and assembly time for a single circuit breaker, and the technical requirements for the assembler are too high. And because the general circuit breaker module and the leakage circuit breaker module are integrated in the same housing, no matter which module has a functional failure, the entire product will fail or be scrapped. Such products are also too complex in structure, not conducive to maintenance, and the production and manufacturing costs are relatively high. Summary of the invention

[0003] In order to overcome the shortcomings of the prior art, the present invention provides a modular assembly method with independent functions, which achieves a reliable connection structure and narrow width. At the same time, its functional modules are independent, and the assembly and maintenance are convenient and easy to realize batch automated production of a combined leakage circuit breaker.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a combined leakage circuit breaker, including a universal circuit breaker module and a leakage circuit breaker module, the universal circuit breaker module has an input end and an output end, the leakage circuit breaker module includes a transformer assembly, a circuit breaker function assembly and a leakage function assembly, the circuit breaker function assembly and the leakage function assembly are integrated to form an integrated leakage circuit breaker assembly, the integrated leakage circuit breaker assembly has an input end and an output end, the transformer assembly is located at the output end of the universal circuit breaker module, the transformer assembly includes a transformer, a current-carrying component and a terminal, the current-carrying component is penetrated on the transformer, one end of which is electrically connected to the universal circuit breaker module and the circuit breaker function assembly respectively, and the other end is connected to the terminal, the transformer assembly, the universal circuit breaker module and the integrated leakage circuit breaker assembly are all detachably arranged.

[0005] In the above technical scheme, there are generally multiple universal circuit breaker modules. In the prior art, the transformer assembly and the integrated leakage circuit breaker assembly are integrated and located on the side of the universal circuit breaker module. When connecting, long wires are required to connect each universal circuit breaker module with the transformer, which makes the wiring complicated, the wiring difficult, and the disassembly and maintenance inconvenient. The present design divides the leakage circuit breaker module into two parts, which reduces the volume of the leakage circuit breaker module, and the transformer assembly is located at the outlet end of the universal circuit breaker module, which reduces the connection difficulty, achieves a narrower overall width, saves costs, and improves assembly efficiency.

[0006] As a further configuration of the present invention, the transformer assembly includes a shell, in which the transformer, current-carrying components and wiring terminals are installed, and the shell is respectively connected to the universal circuit breaker module and the leakage circuit breaker integrated assembly.

[0007] In the above technical solution, the universal circuit breaker modules are detachably connected to each other, the universal circuit breaker module and the integrated leakage circuit breaker assembly are detachably connected to each other, and the transformer assembly, the universal circuit breaker module and the integrated leakage circuit breaker assembly are also detachably connected. The combination of various components constitutes a complete circuit breaker with a small size and easy assembly.

[0008] As a further configuration of the present invention, the shell includes a base and a cover, the cover includes a cover body and an L-shaped side cover, a right-angled side of the side cover is arranged on the outlet terminal or the output terminal, and the other right-angled side is located on the side of the outlet terminal or the output terminal, and a gap for installing the side cover is formed between the cover body and the universal circuit breaker module or the integrated leakage circuit breaker assembly, and the side cover is fixedly connected to the universal circuit breaker module and the integrated leakage circuit breaker assembly through an axle pin.

[0009] In the above technical solution, the setting of the L-shaped side cover helps to connect the universal circuit breaker module and the transformer assembly or the leakage circuit breaker integrated assembly and the transformer assembly together, and the setting of the axle pin helps to fix the side cover on the universal circuit breaker module and the leakage circuit breaker integrated assembly. The axle pin passes through the side cover, each universal circuit breaker module and the leakage circuit breaker integrated assembly in turn, which is very convenient for disassembly and installation.

[0010] As a further configuration of the present invention, there are two L-shaped side covers, namely a first side cover and a second side cover. The connection between the first side cover and the cover body and the universal circuit breaker module respectively has a first connection structure and a second connection structure to combine the transformer assembly and the universal circuit breaker module into one. The connection between the second side cover and the cover body and the integrated leakage circuit breaker assembly respectively has a third connection structure and a fourth connection structure to combine the transformer assembly and the integrated leakage circuit breaker assembly into one. The second side cover is integrally arranged with the side panel of the integrated leakage circuit breaker assembly.

[0011] In the above technical solution, the two L-shaped side covers are provided with axle pins for a firm connection. The two side covers are arranged opposite to each other and distributed on both sides. The second side cover is integrally arranged with the side plate of the integrated leakage circuit breaker assembly to improve the stability of the connection.

[0012] As a further configuration of the present invention, the first connecting structure, the second connecting structure, the third connecting structure and the fourth connecting structure all have convex ribs and guide grooves that are guided and clamped to each other, and limiting blocks that limit the convex ribs in the guide grooves are arranged on opposite sides of the two guide grooves on the first connecting structure and the second connecting structure, and limiting blocks that limit the convex ribs in the guide grooves are also arranged on opposite sides of the two guide grooves on the third connecting structure and the fourth connecting structure.

[0013] In the above technical solution, the setting of the limit block can prevent the side cover from being disengaged from the shell or the universal circuit breaker module or the integrated leakage circuit breaker assembly in the combination direction of the universal circuit breaker module and the transformer assembly, so that the side cover has the function of pulling the transformer assembly and the universal circuit breaker module or the transformer assembly and the integrated leakage circuit breaker assembly together, making the connection between the two more firmly and tightly.

[0014] As a further configuration of the present invention, the convex ribs or guide grooves are distributed on the inner side surfaces of the two right-angled sides of the side cover.

[0015] In the above technical solution, part of the rib or guide groove is located on the inner side of a right angle side of the side cover, and part of it is located on the inner side of another right angle side, so that both right angle sides have tensile force, increasing the effective area of ​​the connection and making the connection more stable and firm.

[0016] As a further configuration of the present invention, a connection hole for connecting an additional component is provided between the first side cover and the cover body and / or the base.

[0017] In the above technical solution, the connection holes are provided to facilitate the combination when some additional parts need to be connected during subsequent use.

[0018] As a further configuration of the present invention, a first protrusion and a second protrusion that limit each other are arranged between the base and the universal circuit breaker module and the leakage circuit breaker integrated assembly.

[0019] In the above technical solution, the first protrusion and the second protrusion limit the mutual inductor assembly in the direction perpendicular to the guide rail, so that its positioning is more accurate.

[0020] As a further configuration of the present invention, the electrical connection structure between the circuit breaker functional component and the current-carrying component is consistent with the electrical connection structure between a general circuit breaker module and the current-carrying component.

[0021] In the above technical solution, the function of the circuit breaker functional component is consistent with that of the general circuit breaker module, and it also needs to be connected to the current-carrying component and the connection structure is consistent.

[0022] As a further configuration of the present invention, the current-carrying component includes a plurality of conductive members, and the electrical connection between the universal circuit breaker module or the circuit breaker functional component and the conductive members has two metal wiring boards, which are connected by screws.

[0023] In the above technical solution, the conductive part can be a wire or a metal conductive sheet or a combination of a wire and a metal conductive sheet. Preferably, the electrical connection positions of the mutual inductor assembly and the universal circuit breaker module and the leakage circuit breaker integrated assembly are all provided with metal terminal blocks. The metal terminal blocks will not shake and have a positioning effect. The metal terminal blocks are provided with threaded holes, so that only the corresponding two metal terminal blocks need to be aligned and then fixed with screws. No welding is required, which simplifies the assembly steps, eliminates the need to consider wiring, and improves efficiency.

[0024] As a further configuration of the present invention, the current-carrying component further includes an N wire, one end of which is connected to a corresponding terminal, and the other end of which passes through a transformer and is connected to a terminal at an input end of a leakage functional component.

[0025] In the above technical solution, the N line needs to pass through the output end of the integrated leakage circuit breaker component and then be connected to the wiring terminal of the input end, so a guide channel for the N line to pass through is provided in the integrated leakage circuit breaker component, so that the N line can be reasonably laid out to avoid the wires running around.

[0026] As a further configuration of the present invention, one of the two metal terminal blocks is located at the output end of the universal circuit breaker module or the output end of the integrated leakage circuit breaker component, and the corresponding two sides of the metal terminal block are provided with a first limit block and a second limit block that form a limit fit with the metal terminal block, and the side of the metal terminal block is also provided with a partition that separates the two adjacent metal terminal blocks.

[0027] In the above technical solution, the first limit block and the second limit block are provided to fix the position of the metal terminal block, prevent the metal terminal block from shifting, and improve the connection efficiency. The partition can increase the creepage distance of adjacent metal terminal blocks and improve the insulation.

[0028] As a further configuration of the present invention, the adjacent universal circuit breaker modules and the universal circuit breaker module and the integrated leakage circuit breaker assembly are linked by a connecting rod, and positioning protrusions and positioning grooves are provided between the adjacent universal circuit breaker modules and the integrated leakage circuit breaker assembly, and each universal circuit breaker module and the integrated leakage circuit breaker assembly is provided with an axle pin.

[0029] In the above technical solution, the positioning protrusions and positioning grooves are provided to facilitate the splicing between two adjacent modules. The connecting rod is provided to enable the actuators in each universal circuit breaker module and the circuit breaker functional component to be linked. The shaft pin is provided to fix each universal circuit breaker module and the integrated leakage circuit breaker component together, with a tight connection, simple structure and small size.

[0030] The present invention will be further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Attached Figure 1 It is a schematic diagram of the structure of a specific embodiment of the present invention;

[0032] Attached Figure 2 It is an exploded view of the structure of a specific embodiment of the present invention;

[0033] Attached Figure 3 It is a structural exploded view of a mutual inductor assembly according to a specific embodiment of the present invention;

[0034] Attached Figure 4 It is a structural exploded view of an integrated component of a leakage circuit breaker according to a specific embodiment of the present invention;

[0035] Attached Figure 5 It is a structural exploded view of a universal circuit breaker module according to a specific embodiment of the present invention;

[0036] Attached Figure 6 It is a structural exploded view of a universal circuit breaker module according to a specific embodiment of the present invention;

[0037] Attached Figure 7 It is a structural exploded view of a side cover according to a specific embodiment of the present invention;

[0038] Attached Figure 8 It is a structural diagram of the first bump and the second bump in a specific embodiment of the present invention when they cooperate. DETAILED DESCRIPTION

[0039] The specific implementation example of the present invention is Figure 1-8As shown, a combined leakage circuit breaker includes a universal circuit breaker module 1 and a leakage circuit breaker module, wherein the universal circuit breaker module 1 has an input terminal and an output terminal 11, and the leakage circuit breaker module includes a transformer component 3, a circuit breaker function component and a leakage function component, wherein the circuit breaker function component and the leakage function component are integrated to form an integrated leakage circuit breaker component 2, and the integrated leakage circuit breaker component 2 has an input terminal and an output terminal 21, and the transformer component 3 is located at the output terminal 11 of the universal circuit breaker module 1, and the transformer component 3 includes a transformer 31, a current-carrying component 32 and a terminal 33, wherein the current-carrying component 32 is penetrated on the transformer 31, and one end thereof is electrically connected to the universal circuit breaker module 1 and the circuit breaker function component respectively, and the other end is connected to the terminal 33, and the transformer component 3, the universal circuit breaker module 1 and the integrated leakage circuit breaker component 2 are all detachably arranged. There are generally multiple universal circuit breaker modules 1. In the prior art, the transformer 31, the transformer assembly 3 and the leakage circuit breaker integrated assembly 2 are integrated and located on the side of the universal circuit breaker module 1. When connecting, long wires are required to connect each universal circuit breaker module 1 with the transformer 31, which makes the wiring complicated, the wiring difficult, and the disassembly and maintenance inconvenient. The present design divides the leakage circuit breaker module into two parts, reducing the volume of the leakage circuit breaker module, and the transformer 31, the transformer assembly 3 is located at the outlet terminal 11 of the universal circuit breaker module 1, which reduces the connection difficulty, achieves a narrower overall width, saves costs, and improves assembly efficiency.

[0040] The above-mentioned transformer assembly 3 includes a housing 34, in which the transformer 31, the current-carrying component 32 and the terminal 33 are all installed. The housing 34 is respectively connected with the universal circuit breaker module 1 and the leakage circuit breaker integrated assembly 2. The universal circuit breaker modules 1 are detachably connected to each other, the universal circuit breaker module 1 and the leakage circuit breaker integrated assembly 2 are detachably connected to each other, and the terminal 33 of the transformer 31 of the transformer assembly 3 is also detachably connected to the universal circuit breaker module 1 and the leakage circuit breaker integrated assembly. A complete circuit breaker is formed by the combination of various components, which is small in size and easy to combine.

[0041] The shell 34 includes a base 341 and a cover 342, and the cover 342 includes a cover body 3421 and an L-shaped side cover, a right-angled side of the side cover is provided on the outlet terminal 11 or the output terminal 21, and the other right-angled side is located on the side of the outlet terminal 11 or the output terminal 21, and a gap for installing the side cover is formed between the cover body 3421 and the universal circuit breaker module 1 or the leakage circuit breaker integrated component 2, and the side cover is fixedly connected to the universal circuit breaker module 1 and the leakage circuit breaker integrated component through an axle pin 35a. The setting of the L-shaped side cover helps to connect the universal circuit breaker module 1 and the transformer assembly 3 or the leakage circuit breaker integrated assembly 2 and the transformer assembly 3 together. The setting of the axle pin 35a helps to fix the side cover on the universal circuit breaker module 1 and the leakage circuit breaker integrated assembly 2. The axle pin 35a passes through the side cover, each universal circuit breaker module 1 and the leakage circuit breaker integrated assembly 2 in turn. The universal circuit breaker module 1 transformer 31 transformer assembly 3 universal circuit breaker module 1 transformer 31 transformer assembly 3 universal circuit breaker module 1 transformer 31 transformer assembly 3 are easy to disassemble and install.

[0042] The L-shaped side covers are two and are respectively the first side cover 3422 and the second side cover 3423. The first side cover 3422 has a first connection structure and a second connection structure at the connection with the cover body 3421 and the universal circuit breaker module 1, respectively, to combine the transformer assembly 3 and the universal circuit breaker module 1 into one. The second side cover 3423 has a third connection structure and a fourth connection structure at the connection with the cover body 3421 and the leakage circuit breaker integrated assembly 2, respectively, to combine the transformer assembly 3 and the leakage circuit breaker integrated assembly 2 into one. The second side cover 3423 is integrally arranged with the side plate of the leakage circuit breaker integrated assembly 2. The two L-shaped side covers are provided with axle pins 35b, which are firmly connected. The two side covers are arranged oppositely and distributed on both sides. The second side cover 3423 is integrally arranged with the side plate of the leakage circuit breaker integrated assembly 2 to improve the stability of the connection.

[0043] The above-mentioned first connecting structure, second connecting structure, third connecting structure and fourth connecting structure all have convex ribs 3424 and guide grooves 3425 that are guided and clamped to each other. On the opposite sides of the two guide grooves 3425 on the first connecting structure and the second connecting structure, there are provided limit blocks 3426 that limit the convex rib 3424 in the guide grooves 3425. On the opposite sides of the two guide grooves 3425 on the third connecting structure and the fourth connecting structure, there are also provided limit blocks 3426 that limit the convex rib 3424 in the guide grooves 3425. The first side cover 3422 and the second side cover 3423 are symmetrically arranged, and the setting of the limit block 3426 can prevent the side cover from being disengaged from the shell 34 or the universal circuit breaker module 1 or the leakage circuit breaker integrated component 2 in the combination direction of the universal circuit breaker module 1 and the transformer component 3, so that the side cover has the function of pulling the transformer component 3 and the universal circuit breaker module 1 or the transformer component 3 and the leakage circuit breaker integrated component 2 together, making the connection between the two more firmly and tightly.

[0044] The ribs 3424 or guide grooves 3425 are distributed on the inner side surfaces of the two right-angled sides of the side cover. A portion of the ribs 3424 or guide grooves 3425 is located on the inner side surface of one right-angled side of the side cover, and a portion is located on the inner side surface of the other right-angled side, so that both right-angled sides have tension, increasing the effective area of ​​the connection and making the connection more stable and firm.

[0045] A connection hole 343 for connecting an additional component is provided between the first side cover 3422 and the cover body 3421 or / and the base 341. The connection hole 343 is provided for the convenience of connecting some additional components in the subsequent use process.

[0046] The base 341 and the universal circuit breaker module 1 and the leakage circuit breaker integrated assembly 2 are provided with mutually limiting first protrusions 344 and second protrusions 13, 22. The first protrusions 344 and second protrusions 13, 22 limit the mutual inductor assembly 3 in the direction perpendicular to the guide rail, so that its positioning is more accurate.

[0047] The electrical connection structure between the output terminal 21 of the circuit breaker functional component and the current-carrying component 32 is consistent with the electrical connection structure between the general circuit breaker module 1 and the current-carrying component 32. The function of the circuit breaker functional component is consistent with that of the general circuit breaker module 1, and it also needs to be connected to the current-carrying component 32 and the connection structure is consistent with the output terminal 21 of the general circuit breaker module 1 and the general circuit breaker module 1.

[0048] The current-carrying component 32 includes a plurality of conductive members 321. The electrical connection between the universal circuit breaker module 1 or the circuit breaker functional component and the conductive member 321 has two metal terminal blocks 3211, 23, 12, and the two metal terminal blocks 3211, 23, 12 are connected by screws 4. The conductive member 321 can be a wire or a metal conductive sheet or a combination of a wire and a metal conductive sheet. The preferred electrical connection positions of the mutual inductor component 3 and the universal circuit breaker module 1 and the leakage circuit breaker integrated component 2 all have metal terminal blocks 3211, 23, 12. The metal terminal blocks 3211, 23, 12 will not shake and have a positioning effect. The metal terminal blocks 3211, 23, 12 are all provided with threaded holes, so that only the corresponding two metal terminal blocks 3211, 23, 12 need to be aligned and then fixedly connected by screws 4, without welding, simplifying the assembly steps, and without considering wiring, thereby improving efficiency.

[0049] The current-carrying component 32 further includes an N wire 322, one end of which is connected to the corresponding terminal 33, and the other end of which passes through the transformer 31 and the terminal 33 at the input end of the leakage function component to connect to the conductive member 321. The N wire 322 needs to pass through the output end 21 of the leakage circuit breaker integrated component 2 and then be connected to the terminal 33 at the input end, so a guide channel for the N wire 322 to pass through is provided in the leakage circuit breaker integrated component 2, so that the N wire 322 can be reasonably laid out to avoid the wires running around.

[0050] One of the two metal terminal blocks 3211, 23, 12 is located at the outlet terminal 11 of the universal circuit breaker module 1 or the output terminal 21 of the leakage circuit breaker integrated assembly 2. The corresponding two sides of the metal terminal blocks 23, 12 are provided with a first limit block 111, 211 and a second limit block 112, 212 that form a limit fit with the metal terminal blocks 23, 12. The side of the metal terminal blocks 23, 12 is also provided with a partition 113 that separates the two adjacent metal terminal blocks 23, 12. The first limit block 111, 211 and the second limit block 112, 212 are provided to fix the position of the metal terminal blocks, prevent the metal terminal blocks from shifting, and improve the connection efficiency. The provision of the partition 113 can increase the creepage distance of adjacent metal terminal blocks and improve the insulation.

[0051] The adjacent universal circuit breaker modules 1 and the universal circuit breaker modules 1 and the leakage circuit breaker integrated component 2 are linked by connecting rods, and positioning protrusions 61 and positioning grooves 62 are provided between the adjacent universal circuit breaker modules 1 and the universal circuit breaker modules 1 and the leakage circuit breaker integrated component 2, and shaft pins 5 are pierced through each universal circuit breaker module 1 and the leakage circuit breaker integrated component 2. The positioning protrusions 61 and the positioning grooves 62 are provided to facilitate the splicing between the two adjacent modules, the setting of the connecting rod enables the actuators in each universal circuit breaker module 1 and the circuit breaker functional component to be linked, and the setting of the shaft pins 5 is to fix each universal circuit breaker module 1 and the leakage circuit breaker integrated component 2 together, with tight connection, simple structure and small volume.

[0052] The present invention is not limited to the above-mentioned specific implementation modes. A person skilled in the art may adopt other various specific implementation modes to implement the present invention based on the contents disclosed in the present invention, or any simple changes or modifications made to the design structure and concept of the present invention shall fall within the protection scope of the present invention.

Claims

1. A combined leakage circuit breaker, comprising a general circuit breaker module and a leakage circuit breaker module, wherein the general circuit breaker module has an inlet terminal and an outlet terminal, and is characterized in that: The leakage circuit breaker module includes a transformer component, a circuit breaker functional component and a leakage functional component. The circuit breaker functional component and the leakage functional component are integrated to form an integrated leakage circuit breaker component. The integrated leakage circuit breaker component has an input end and an output end. The transformer component is located at the outlet end of the universal circuit breaker module. The transformer component includes a transformer, a current-carrying component and a terminal. The current-carrying component is passed through the transformer, one end of which is electrically connected to the universal circuit breaker module and the circuit breaker functional component respectively, and the other end is connected to the terminal. The transformer component, the universal circuit breaker module and the integrated leakage circuit breaker component are all detachably arranged; the transformer component includes a shell, the transformer, the current-carrying component and the terminal are all installed in the shell, and the shell is respectively clamped with the universal circuit breaker module and the integrated leakage circuit breaker component; the shell includes a base and a cover, and the cover includes a The invention comprises a cover body and an L-shaped side cover, a right-angled side of the side cover is provided on the outlet or output end, and the other right-angled side is provided on the side of the outlet or output end, a gap for installing the side cover is formed between the cover body and the universal circuit breaker module or the integrated leakage circuit breaker assembly, and the side cover is fixedly connected to the universal circuit breaker module and the integrated leakage circuit breaker assembly through an axle pin; the L-shaped side cover is two and is respectively a first side cover and a second side cover, the connection between the first side cover and the cover body and the universal circuit breaker module respectively has a first connection structure and a second connection structure to combine the transformer assembly and the universal circuit breaker module into one, the connection between the second side cover and the cover body and the integrated leakage circuit breaker assembly respectively has a third connection structure and a fourth connection structure to combine the transformer assembly and the integrated leakage circuit breaker assembly into one, and the second side cover is integrally arranged with the side plate of the integrated leakage circuit breaker assembly.

2. The combined leakage circuit breaker according to claim 1, characterized in that: The first connecting structure, the second connecting structure, the third connecting structure and the fourth connecting structure all have convex ribs and guide grooves that are guided and clamped to each other. On the opposite sides of the two guide grooves on the first connecting structure and the second connecting structure, there are provided limit blocks that limit the convex ribs in the guide grooves. On the opposite sides of the two guide grooves on the third connecting structure and the fourth connecting structure, there are also limit blocks that limit the convex ribs in the guide grooves.

3. The combined leakage circuit breaker according to claim 2, characterized in that: The convex ribs or guide grooves are distributed on the inner side surfaces of the two right-angled sides of the side cover.

4. The combined leakage circuit breaker according to claim 1, 2 or 3, characterized in that: A connecting hole for connecting an additional component is provided between the first side cover and the cover body or / and the base.

5. The combined leakage circuit breaker according to claim 1, 2 or 3, characterized in that: A first protrusion and a second protrusion that limit each other are arranged between the base and the universal circuit breaker module and the leakage circuit breaker integrated assembly.

6. The combined leakage circuit breaker according to any one of claims 1 to 3, characterized in that: The electrical connection structure between the circuit breaker functional component and the current-carrying component is consistent with the electrical connection structure between a general circuit breaker module and the current-carrying component.

7. The combined leakage circuit breaker according to claim 6, characterized in that: The current-carrying components include a plurality of conductive members, and the electrical connection between the universal circuit breaker module or the circuit breaker functional component and the conductive members is provided with two metal wiring boards, which are connected by screws.

8. The combined leakage circuit breaker according to claim 7, characterized in that: The current-carrying component also includes an N wire, one end of which is connected to a corresponding wiring terminal, and the other end of which passes through the transformer and is connected to a wiring terminal at the input end of the leakage functional component.

9. The combined leakage circuit breaker according to claim 7 or 8, characterized in that: One of the two metal terminal blocks is located at the output end of the universal circuit breaker module or the output end of the integrated leakage circuit breaker component. The corresponding two sides of the metal terminal block are provided with a first limit block and a second limit block that form a limit fit with the metal terminal block. The side of the metal terminal block is also provided with a partition that separates the two adjacent metal terminal blocks.

10. The combined residual current circuit breaker according to claim 1, 2, 3, 7 or 8, characterized in that: Adjacent universal circuit breaker modules and universal circuit breaker modules and integrated leakage circuit breaker components are linked by connecting rods, and positioning protrusions and positioning grooves are arranged between adjacent universal circuit breaker modules and integrated leakage circuit breaker components. Each universal circuit breaker module and integrated leakage circuit breaker component is provided with an axle pin.

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