CN111105961A - Electronic leakage tripper module and circuit breaker - Google Patents

Abstract

The utility model provides an electronic type electric leakage release module and circuit breaker, electronic type electric leakage release module includes a plurality of current transformer, a zero sequence transformer and runs through in corresponding current transformer's current-carrying conductor and zero sequence transformer's the row that leads to, current-carrying conductor comprises limit looks current-carrying conductor and well looks current-carrying conductor, and the row that leads to comprises limit looks current-carrying conductor and well looks current-carrying conductor, thereby current-carrying conductor and the row that leads to one-to-one connection constitute major loop, characteristics: the plurality of current transformers are sequentially arranged from left to right and are arranged close to the front and the back of the zero sequence transformer, when the end parts of the side phase conducting bar of the conducting bar and the side phase current-carrying conductor of the current-carrying conductor are connected, one of the U-shaped arms of the side phase conducting bar connected with the side phase current-carrying conductor is positioned above the current transformers, and one end of the side phase current-carrying conductor connected with the side phase conducting bar is positioned at the left side and the right side of the zero sequence transformer. Also disclosed is a circuit breaker equipped with the electronic leakage release module. Reasonable layout, compact structure and shortened circuit breaker size.

Description

Electronic leakage tripper module and circuit breaker

Technical Field

The invention belongs to the technical field of low-voltage electrical appliances, and particularly relates to an electronic leakage tripper module and a circuit breaker using the leakage tripper module.

Background

The leakage circuit breaker is used as an overload and short-circuit leakage protection electric appliance of a low-voltage distribution system and a motor protection loop, when the leakage circuit breaker works and a leakage fault occurs in a circuit, a circuit breaker leakage unit detects a signal and sends an action instruction to a leakage release, and the leakage release acts to enable the circuit breaker to trip, so that the purpose of quickly breaking the circuit to protect circuits and equipment is achieved.

The existing electronic leakage circuit breaker is generally divided into two forms, one is a common electronic molded case circuit breaker with an additional leakage mechanism module, for example, an electronic leakage protector recommended by the chinese patent application publication No. CN101728126A, and the circuit breaker with the structure has the disadvantages of large volume and high cost. The other is the whole built-in structure of electronic release and electric leakage mechanism module, for example "take residual current electric protection and liquid crystal display' a circuit breaker that" the china utility model patent was introduced to the grant No. CN201038100Y and the chinese utility model patent grant No. CN204270999U relates "a circuit breaker with electronic protection and electric leakage protection", the circuit breaker of this kind of structure has the parts machining and assembles the difficulty, and the insulating distance is near defect. In addition, the two electronic residual current circuit breakers are not ideal in the aspects of structural compactness, cost, assembly convenience and insulation treatment. Therefore, it is necessary to reasonably improve the structure of the conventional electronic earth leakage breaker.

Disclosure of Invention

The invention aims to provide an electronic leakage tripper module which has reasonable space layout of all parts and compact structure, can effectively shorten the size of a circuit breaker in the length direction and conforms to the development trend of switch miniaturization.

Another task of the present invention is to provide a circuit breaker using the electronic leakage trip unit module, which can reduce the size of the circuit breaker in the prior art and ensure the overall implementation of the technical effects of the electronic leakage trip unit module.

In order to complete the primary task, the technical scheme provided by the invention is as follows: an electronic leakage release module comprises a plurality of current transformers, a zero sequence transformer, current-carrying conductors respectively penetrating through the corresponding current transformers and a current-carrying bar penetrating through the zero sequence transformer, the current-carrying conductor is composed of an edge phase current-carrying conductor and a middle phase current-carrying conductor, the conducting bar is composed of an edge phase conducting bar and a middle phase conducting bar, the current-carrying conductors and the conductive bars are connected in one-to-one correspondence to form a main loop, the plurality of current transformers are sequentially arranged from left to right and are arranged close to the front and the back of the zero sequence transformer, the side phase conductive bars are U-shaped, when the ends of the side phase conductor bar of the conductor bar and the side phase current carrying conductor of the current carrying conductor are connected, one of the arms of the U-shape whose side phase conducting bar is connected with the side phase current-carrying conductor is positioned above the current transformer, and one end of the side phase current-carrying conductor connected with the side phase current-carrying bar is positioned at the left side and the right side of the zero sequence transformer.

In a specific embodiment of the present invention, the zero sequence transformer is elliptical, and has an elliptical through hole in the center, and the conductive bar passes through the elliptical through hole.

In another specific embodiment of the present invention, the side phase conductive rows of the conductive rows are an a phase conductive row and an N phase conductive row, the middle phase conductive row of the conductive rows is a B phase conductive row and a C phase conductive row, the a phase conductive row and the N phase conductive row are arranged in a symmetrical state with each other and penetrate through an upper part of the oval through hole; and the other one of the B-phase conductive bar and the C-phase conductive bar which is lower in the oval through hole passes through the oval through hole.

In another specific embodiment of the present invention, the B-phase conductive bars and the C-phase conductive bars are arranged in a straight row.

In a further specific embodiment of the present invention, the side phase current-carrying conductors of the current-carrying conductors include an a-phase current-carrying conductor and an N-phase current-carrying conductor, the middle phase current-carrying conductors of the current-carrying conductors include a B-phase current-carrying conductor and a C-phase current-carrying conductor, and the a-phase current-carrying conductor, the B-phase current-carrying conductor, the C-phase current-carrying conductor and the N-phase current-carrying conductor all independently penetrate through the current transformer.

In another specific embodiment of the present invention, the a-phase current-carrying conductor and the N-phase current-carrying conductor are both L-shaped, and after passing through the corresponding current transformer, are bent toward the a-phase conducting bar and the N-phase conducting bar respectively and connected to the a-phase conducting bar and the N-phase conducting bar respectively; the B-phase current-carrying conductor and the C-phase current-carrying conductor are arranged in a straight line and are respectively and directly connected with the B-phase conductive bar and the C-phase conductive bar after passing through the corresponding current transformers.

In a further specific embodiment of the present invention, the upward bent end of the phase a current-carrying conductor connected to the phase a conductive bar is located on the left side of the zero sequence transformer; and the upward bending end of the N-phase current-carrying conductor, which is connected with the N-phase current-carrying bar, is positioned on the right side of the zero sequence transformer.

In a more specific embodiment of the present invention, the B-phase current-carrying conductor and the B-phase conducting bar are integrally fabricated and sequentially pass through the current transformer and the zero-sequence transformer, and the C-phase current-carrying conductor and the C-phase conducting bar are integrally fabricated and sequentially pass through the current transformer and the zero-sequence transformer.

In yet another specific embodiment of the present invention, the overcurrent detecting assembly further includes a magnetic release, the magnetic release includes a bracket, an armature, a reaction spring, and a pivot, the bracket is fixedly connected to the current-carrying conductor, the armature is pivotally connected to the bracket through the pivot, and the reaction spring is sleeved on the pivot to reset the armature.

In order to complete another task, the technical scheme provided by the invention is as follows: the utility model provides an electronic type electric leakage circuit breaker, this circuit breaker includes the base and sets up the major loop unit in the base, the major loop unit set gradually inlet wire terminal, the contact arc extinguishing module of being connected with the inlet wire terminal, a plurality of above along the length direction of base electronic type electric leakage release module, the leading-out terminal of being connected with electronic type electric leakage release module, electronic type electric leakage release module be connected with contact arc extinguishing module.

After the structure is adopted, the invention has the beneficial effects that: when the end parts of the side phase conducting bar of the conducting bar and the side phase current-carrying conductor of the current-carrying conductor are connected, one arm of a U shape, which is connected with the side phase current-carrying conductor, of the side phase conducting bar is positioned above the current transformer, and one end of the side phase current-carrying conductor connected with the side phase conducting bar is positioned on the left side and the right side of the zero sequence transformer, so that the connection mode enables the space layout to be more reasonable, saves the space in the length direction of the circuit breaker, ensures the compactness of the whole structure, and especially has great significance for reducing the volume of the small-shell-frame leakage built-in molded case circuit breaker; the elliptical through hole space of the second zero sequence transformer is large, and the distance between the conductive bars in the elliptical through holes is large, so that the insulation distance can be ensured without binding an insulation tape; and the elliptical through hole space of the third zero sequence transformer is large, so that the assembly of the conducting bar is facilitated, and the assembly efficiency is improved.

Drawings

Fig. 1 is an assembly view of the electronic residual current plastic case circuit breaker according to the present invention.

Fig. 2 is a schematic structural diagram of the electronic residual current plastic-shell circuit breaker according to the present invention.

Fig. 3 is a schematic diagram of the blasting of the electronic leakage release module according to the present invention.

Fig. 4 is a side view of the electronic leakage release module of the present invention.

Fig. 5 is another side view of the electronic leakage trip unit module according to the present invention.

Fig. 6 is a side view of the assembly of the overcurrent detecting assembly and the leakage detecting assembly of the electronic leakage trip module according to the present invention.

Fig. 7 is a front view of the assembly of the overcurrent detecting element and the leakage detecting element of the electronic leakage trip module according to the present invention.

Fig. 8 is a sectional view taken along line a-a of fig. 7.

Fig. 9 is a left side view of the assembly of the overcurrent detecting element and the leakage detecting element of the electronic leakage trip module according to the present invention.

Fig. 10 is an assembly diagram of a zero sequence transformer and a connecting bar assembly of the electronic leakage release module according to the present invention.

In the figure: 1.a base; 2, an incoming line terminal; 3. a contact arc extinguishing module; 4. the electronic leakage tripping device comprises an electronic leakage tripping device module, 41, a base, 42, an overcurrent detection assembly, 421, a current transformer, 422, a current-carrying conductor, 4221, an A-phase current-carrying conductor, 4222, a B-phase current-carrying conductor, 4223, a C-phase current-carrying conductor, 4224, an N-phase current-carrying conductor, 423, a magnetic tripping device, 4231, a support, 4232, an armature, 4233, yoke iron, 4234, a pivot, 4235, a counter force spring, 43, a leakage detection assembly, 431, a zero-sequence transformer, 4311, an oval through hole, 432, an electronic circuit board assembly, 433, a conductive bar, 4331, an A-phase conductive bar, 43311, a first conductive bar, 43312, a second conductive bar, 4332, a B-phase conductive bar, 4333, a C-phase conductive bar, 4334, an N-phase conductive bar, 43341, a third conductive bar, 43342, a fourth conductive bar, 44, a first accommodating space and 45, a second accommodating space; 5. and an outlet terminal.

Detailed Description

The following is a detailed description with reference to the drawings by way of example, but the description of the example is not intended to limit the scope of the invention, and any equivalent changes in form and material, which are made in accordance with the spirit of the invention, are to be considered as the scope of the invention.

In the following description, all the concepts related to the directions or orientations of up, down, left, right, front and rear are based on the positions shown in the drawings, and thus should not be construed as particularly limiting the technical solutions provided by the present invention.

As shown in fig. 1 to 10, the present invention relates to an electronic residual current circuit breaker, wherein as shown in fig. 1, the electronic residual current circuit breaker of the embodiment includes an a-phase, a B-phase, a C-phase, and an N-phase from left to right in sequence, and the electronic residual current circuit breaker includes a base 1 and a main circuit unit disposed in the base 1. As shown in fig. 2, the main circuit unit is sequentially provided with an incoming line terminal 2, a contact arc extinguishing module 3 connected with the incoming line terminal 2, an electronic leakage tripping device module 4 connected with the contact arc extinguishing module 3, and an outgoing line terminal 5 connected with the electronic leakage tripping device module 4 from front to back along the length direction of the base 1. Defining: the direction from the incoming terminal 2 to the outgoing terminal 5 of the electronic leakage molded case circuit breaker is the front-back direction, and the direction from the A phase to the N phase of the electronic leakage molded case circuit breaker is the left-right direction. As shown in fig. 3, the electronic leakage trip unit 4 disposed inside the circuit breaker includes a base 41, an overcurrent detection assembly 42 and a leakage detection assembly 43 both disposed on the base 41, where the overcurrent detection assembly 42 includes a plurality of current transformers 421 and current-carrying conductors 422 respectively penetrating through the current transformers 421; the leakage detecting assembly 43 includes a zero sequence transformer 431, an electronic circuit board assembly 432, and a conducting bar 433 penetrating through the zero sequence transformer 431. The plurality of current transformers 421 are sequentially arranged in the phase a, the phase B, the phase C and the phase N of the base 1 from left to right, and are arranged in close proximity to the zero sequence transformer 431. The conducting bar 433 penetrates through the zero sequence transformer 431, one end of the conducting bar 433 is connected with the current-carrying conductors 422 of the overcurrent detection assembly 42 one by one, and the other end of the conducting bar is connected with the outlet terminal 5, namely, the zero sequence transformer 431 is arranged between the current transformer 421 and the outlet terminal 5, and the current-carrying conductors 422 and the conducting bar 433 are correspondingly connected one by one to form a main loop.

As shown in fig. 5 to 8, the conductive bar 433 is composed of two side conductive bars and a middle conductive bar, in this embodiment, the side conductive bars of the conductive bar 433 are an a-phase conductive bar 4331 and an N-phase conductive bar 4334, and the middle conductive bar of the conductive bar 433 is a B-phase conductive bar 4332 and a C-phase conductive bar 4333. The zero sequence transformer 431 is oval, and an oval through hole 4311 is formed in the center. The a-phase conducting bar 4331, the B-phase conducting bar 4332, the C-phase conducting bar 4333 and the N-phase conducting bar 4334 all penetrate through the oval through hole 4311, two ends of the a-phase conducting bar, the C-phase conducting bar and the N-phase conducting bar 4334 are located on the front side and the rear side of the zero sequence transformer 431, one end of the a-phase conducting bar is connected with the outgoing line terminal 5, and the other end of the. The a-phase conductor bar 4331 and the N-phase conductor bar 4334 have the same shape and structure, are symmetrically disposed, and penetrate through the oval through hole 4311, for example, above the oval through hole 4311 in fig. 8. In this embodiment, the a-phase conducting bar 4331 and the N-phase conducting bar 4334 are both U-shaped. When the side phase conducting bars (a phase conducting bar 4331, N phase conducting bar 4334) of the conducting bar 433 are connected to the ends of the side phase current-carrying conductors of the current-carrying conductor 422, one of the arms of the U-shape whose side phase conducting bars (a phase conducting bar 4331, N phase conducting bar 4334) are connected to the side phase current-carrying conductors is located above the current transformer 421, and one end of the side phase current-carrying conductor connected to the side phase conducting bars (a phase conducting bar 4331, N phase conducting bar 4334) is located on the left and right sides of the zero sequence transformer 431. The B-phase conductor bar 4332 and the C-phase conductor bar 4333 have the same shape and structure, and pass through the other side of the oval through hole 4311, and are disposed below the oval through hole 4311, for example, as shown in fig. 8. In this embodiment, the B-phase conducting bar 4332 and the C-phase conducting bar 4333 are arranged in a straight line.

Specifically, one arm of the U-shaped structure of the a-phase conductive bar 4331 after passing through the oval through hole 4311 forms a first receiving space 44 at the left upper side of the current transformer 421, and one arm of the U-shaped structure of the N-phase conductive bar 4334 after passing through the oval through hole 4311 forms a second receiving space 45 at the right upper side of the current transformer 421. Specifically, as shown in fig. 6 and 7, taking the a-phase conductive bar 4331 as an example, two arms of the a-phase conductive bar 4331 are a first conductive bar 43311 and a second conductive bar 43312, respectively, the first conductive bar 43311 is located on one side of the upper left half of the zero-sequence transformer 431, that is, the first conductive bar 43311 is located on the upper left of the current transformer 421, and the second conductive bar 43312 corresponds to the other side of the upper left half of the zero-sequence transformer 431, that is, the second conductive bar 43312 is located on the upper left of the outgoing terminal 5, more specifically, the first conductive bar 43311 and the second conductive bar 43312 are arranged in parallel on the front and rear sides of the upper left corner of the zero-sequence transformer 431 after passing through the oval through hole 4311, and a first accommodating space 44 is formed outside the upper left corner, as shown in a dashed box in fig. 7. Similarly, the two arms of the N-phase conductor bar 4334 are respectively a third conductor bar 43341 and a fourth conductor bar 43342, the third conductor bar 43341 is located on one side of the upper right half of the zero sequence transformer 431, that is, the third conductor bar 43341 is located on the upper right side of the current transformer 421, the fourth conductor bar 43342 corresponds to the other side of the upper right half of the zero sequence transformer 431, that is, the fourth conductor bar 43342 is located on the upper right side of the outlet terminal 5, and the N-phase conductor bar 4334 forms a second accommodating space 45 outside the upper right corner of the zero sequence transformer 431, as shown by the dashed box in fig. 7. More specifically, the first accommodation space 44 and the second accommodation space 45 are the spaces formed by disposing the electronic circuit board assembly 432 above and electrically connecting the current transformer 421 and the zero sequence transformer 431 to the current-carrying conductor 422 and the conductive bar 433.

As shown in fig. 3, 6, and 10, the current-carrying conductors 422 include side-phase current-carrying conductors located on the sides and a middle-phase current-carrying conductor located in the middle, in the present embodiment, the side-phase current-carrying conductors of the current-carrying conductors 422 include an a-phase current-carrying conductor 4221 and an N-phase current-carrying conductor 4224, and the middle-phase current-carrying conductors of the current-carrying conductors 422 include a B-phase current-carrying conductor 4222 and a C-phase current-carrying conductor 4223. The phase a current-carrying conductor 4221, the phase B current-carrying conductor 4222, the phase C current-carrying conductor 4223 and the phase N current-carrying conductor 4224 all independently penetrate through the corresponding current transformer 421. The a-phase current-carrying conductor 4221 and the N-phase current-carrying conductor 4224 are both L-shaped, and after passing through the corresponding current transformer 421, the a-phase current-carrying conductor and the N-phase current-carrying conductor are respectively bent towards the a-phase conducting bar 4331 and the N-phase conducting bar 4334 and are respectively connected with the a-phase conducting bar 4331 and the N-phase conducting bar 4334; and the B-phase current-carrying conductor 4222 and the C-phase current-carrying conductor 4223 are arranged in a straight line and are directly connected with the B-phase conducting bar 4332 and the C-phase conducting bar 4333 respectively after passing through the corresponding current transformer 421. Of course, it is more preferable that the B-phase current-carrying conductor 4222 and the B-phase conducting bar 4332 are integrally manufactured and directly connected to the outlet terminal 5 after sequentially passing through the current transformer 421 and the zero-sequence transformer 431, and the C-phase current-carrying conductor 4223 and the C-phase conducting bar 4333 are integrally manufactured and directly connected to the outlet terminal 5 after sequentially passing through the current transformer 421 and the zero-sequence transformer 431. Specifically, taking the position state shown in fig. 4 as an example, and taking the a-phase current-carrying conductor 4221 as an example, after the a-phase current-carrying conductor 4221 passes through the current transformer 421, the a-phase current-carrying conductor 4221 is bent upward to be connected to the a-phase conductor bar 4331, when the end of the a-phase conductor bar 4331 is connected to the end of the a-phase current-carrying conductor 4221, the first conductor bar 43311 of the a-phase conductor bar is located at the upper left of the current transformer 421, and the upward bent end of the a-phase current-carrying conductor 4221 connected to the first conductor bar 43311 of the a-phase conductor bar is located at the left of the zero sequence transformer. Likewise, when the end of the N-phase conductive row 4334 is connected with the end of the N-phase current carrying conductor 4224, the third conductive row 43341 of the N-phase conductive row 4334 is located at the upper right of the current transformer 421, and the upwardly turned end of the N-phase current carrying conductor 4224 connected with the third conductive row 43341 of the N-phase conductive row 4334 is located at the right side of the zero sequence transformer 431. Because the current transformer 421 and the zero sequence transformer 431 are arranged close to each other in the front-rear direction, the side phase conducting bar is located above the current transformer 421, the side phase current-carrying conductors are located on the left side and the right side of the zero sequence transformer 431, and when the end parts of the side phase current-carrying conductors are connected with the end parts of the side phase conducting bar, the connection parts are located at the upper left corner and the upper right corner of the zero sequence transformer 431. In the preferred embodiment, that is, one end of the side phase current-carrying conductor connected to the side phase conductor bar is disposed on the left and right sides of the zero sequence transformer 431, and one arm of the U-shaped side phase conductor bar connected to the side phase current-carrying conductor is wound in front of the side phase current-carrying conductor in fig. 10, so that the thickness of the side phase conductor bar does not occupy the length of the electronic leakage release module when the side phase conductor bar is connected to the side phase current-carrying conductor, and this connection way saves the space of the breaker in the length direction and ensures the compactness of the whole structure.

As shown in fig. 4, the overcurrent detecting assembly 42 further includes at least two magnetic trips 423, in this embodiment, the two magnetic trips 423 are respectively installed in the phase a and the phase C, and specifically include a support 4231, an armature 4232, a yoke 4233, a pivot 4234, and a reaction spring 4235, the support 4231 is fixedly connected with the current-carrying conductor 422, the armature 4232 is pivotally connected to the support 4231 through the pivot 4234, and the reaction spring 4235 is sleeved on the pivot 4234 and is used for resetting the armature 4232.

The technical scheme of the invention has the advantages that as shown in fig. 7 to 9, the current transformer 421 and the zero sequence transformer 431 are compactly arranged in front and at the back, and the thickness of the conductive bar does not occupy the length dimension of the electronic leakage release module when the conductive bar is connected with the current-carrying conductor, so that the structure minimization in the length direction of the circuit breaker is realized. The elliptical through hole 4311 of the elliptical zero sequence transformer 431 has a large space, the B-phase current-carrying conductor 4222 and the C-phase current-carrying conductor 4223 can be directly inserted into the elliptical through hole 4311 of the zero sequence transformer 431, so that the assembly is convenient, the distances between the a-phase conductive bar 4331 and the N-phase conductive bar 4334 and the B-phase conductive bar 4332 and the C-phase conductive bar 4333 are far, the insulation distance can be ensured without wrapping an insulation tape, and only the middle close parts of the a-phase conductive bar 4331 and the N-phase conductive bar 4334 need to be wrapped by the insulation tape.

Claims (10)

1. The utility model provides an electronic type electric leakage release module, includes a plurality of current transformer (421), a zero sequence transformer (431) and runs through in current-carrying conductor (422) of corresponding current transformer (421) and run through in electrically conductive row (433) of zero sequence transformer (431) respectively, current-carrying conductor (422) constitute by limit looks current-carrying conductor and well looks current-carrying conductor, electrically conductive row (433) constitute by limit looks electrically conductive row and well looks electrically conductive row, thereby current-carrying conductor (422) and electrically conductive row (433) one-to-one connect and constituted main circuit, its characterized in that: the current transformers (421) are sequentially arranged from left to right and are arranged in a front-back abutting mode with the zero sequence transformer (431), the side phase conducting bar is U-shaped, when the end portions of the side phase conducting bar of the conducting bar (433) and the side phase current-carrying conductor of the current-carrying conductor (422) are connected, one arm of the U-shaped connecting arm of the side phase conducting bar and the side phase current-carrying conductor is located above the current transformers (421), and one end of the side phase current-carrying conductor connected with the side phase conducting bar is located on the left side and the right side of the zero sequence transformer (431).

2. An electronic residual current device release module according to claim 1, characterized in that the zero sequence transformer (431) is oval-shaped with an oval through hole (4311) in the center, and the conducting bar (433) passes through the oval through hole (4311).

3. The electronic leakage release module according to claim 2, wherein the side phase conductive bars of the conductive bars (433) are a phase a conductive bar (4331) and a phase N conductive bar (4334), the middle phase conductive bar of the conductive bars (433) is a phase B conductive bar (4332) and a phase C conductive bar (4333), the phase a conductive bar (4331) and the phase N conductive bar (4334) are arranged symmetrically to each other and penetrate through an upper one of the oval through holes (4311); the other side of the B-phase conductive bar (4332) and the C-phase conductive bar (4333) which is inclined downwards in the oval through hole (4311) passes through.

4. An electronic leakage release module according to claim 3, characterized in that the conductive bars of phase B (4332) and phase C (4333) are arranged in a straight row.

5. An electronic leakage release module according to claim 1, characterized in that the side phase current-carrying conductors of the current-carrying conductors (422) comprise a phase current-carrying conductor (4221) and an N phase current-carrying conductor (4224), the middle phase current-carrying conductors of the current-carrying conductors (422) comprise a phase B current-carrying conductor (4222) and a phase C current-carrying conductor (4223), and the phase a current-carrying conductor (4221), the phase B current-carrying conductor (4222), the phase C current-carrying conductor (4223) and the N phase current-carrying conductor (4224) are all independently penetrated through the current transformer (421).

6. The electronic leakage release module according to claim 5, wherein the a-phase current-carrying conductor (4221) and the N-phase current-carrying conductor (4224) are both L-shaped, and after passing through the corresponding current transformer (421), are bent towards the a-phase conductive bar (4331) and the N-phase conductive bar (4334) respectively and connected with the a-phase conductive bar (4331) and the N-phase conductive bar (4334) respectively; the B-phase current-carrying conductor (4222) and the C-phase current-carrying conductor (4223) are arranged in a straight line and are directly connected with the B-phase conducting bar (4332) and the C-phase conducting bar (4333) respectively after penetrating through the corresponding current transformer (421).

7. The electronic leakage release module according to claim 6, wherein the upward bent end of the a-phase current-carrying conductor (4221) connected to the a-phase conductive bar (4331) is located at the left side of the zero sequence transformer (431); and the upward bending end of the N-phase current-carrying conductor, which is connected with the N-phase conducting bar (4334), is positioned on the right side of the zero sequence transformer (431).

8. The electronic leakage release module according to claim 6, wherein the B-phase current-carrying conductor (4222) and the B-phase conducting bar (4332) are integrally formed and sequentially pass through the current transformer (421) and the zero-sequence transformer (431), and the C-phase current-carrying conductor (4223) and the C-phase conducting bar (4333) are integrally formed and sequentially pass through the current transformer (421) and the zero-sequence transformer (431).

9. The electronic leakage release module according to claim 1, wherein the overcurrent detecting assembly (42) further comprises a magnetic release (423), the magnetic release (423) comprises a support (4231), an armature (4232), a reaction spring (4235) and a pivot (4234), the support (4231) is fixedly connected with the current-carrying conductor (422), the armature (4232) is pivotally connected to the support (4231) through the pivot (4234) in a rotating manner, and the reaction spring (4235) is sleeved on the pivot (4234) and used for resetting the armature (4232).

10. The utility model provides an electronic type residual current circuit breaker, includes base (1) and the main circuit unit of setting in base (1), its characterized in that: the main loop unit is sequentially provided with a wire inlet terminal (2), a contact arc extinguishing module (3) connected with the wire inlet terminal (2), a plurality of electronic leakage release modules (4) as claimed in any one of claims (1) to (9), and a wire outlet terminal (5) connected with the electronic leakage release modules (4) along the length direction of the base (11), wherein the electronic leakage release modules (4) are connected with the contact arc extinguishing module (3).

Images