CN216624148U - Residual current operated circuit breaker - Google Patents

Abstract

A residual current operated circuit breaker comprises a multi-pole conductive system and a mutual inductor which are arranged in a base, wherein each pole conductive system comprises a piercing connecting piece which penetrates through a mutual inductor through hole of the mutual inductor, and also comprises a first insulating piece and a second insulating piece which are in plug-in fit, the first insulating piece comprises a first vertical plate and a first transverse plate and a second transverse plate which are respectively arranged at the middle parts of the two sides of the first transverse plate, the lower side of the first vertical plate is connected with an inner arc-shaped lower baffle, the upper side of the first vertical plate is connected with an inner arc-shaped upper baffle, the first insulating piece is inserted into the mutual inductor through hole from one side of the mutual inductor to separate the piercing connecting pieces of each conductive system, the second insulating piece is of a plate-shaped structure and is arranged above the other side of the mutual inductor to be in plug-in fit with the first insulating piece, the assembly of an insulating protective cover shell can be conveniently realized under the condition that the piercing connecting pieces of each pole conductive system are firstly installed, the operation is simple, and the time consumption of the process is short.

Description

Residual current operated circuit breaker

Technical Field

The utility model belongs to the field of low-voltage electric appliances, and relates to a residual current operated circuit breaker.

Background

At present, each phase of conducting systems of a tripolar or quadrupole (with N phase) residual current operated circuit breaker prevent interphase short circuit by winding an insulating tape (or sleeving a heat-shrinkable tube); however, the phenomenon of insulation damage or falling off is inevitable in the production, assembly and transportation processes of winding the insulating tape (or sleeving the heat-shrinkable tube), so that interphase short circuit can occur under the influence of environmental factors in the use process of the product, the internal part of the product is burnt, and the personal or property safety is threatened. Although some products also consider adding the partition boards, the existing partition boards are complicated in structure and high in cost, or are difficult to assemble, or are not assembled into a module with the through connecting pieces.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a residual current operated circuit breaker which is simple in structure, low in cost and simple to assemble.

In order to realize the purpose, the utility model adopts the following technical scheme:

a residual current operated circuit breaker comprises a base, a multi-pole conductive system and a mutual inductor which are arranged in the base, wherein the mutual inductor is arranged in the base, each pole of conductive system comprises a piercing connecting piece which penetrates through a mutual inductor through hole of the mutual inductor, and also comprises a first insulating piece and a second insulating piece which are in splicing fit, the first insulating piece comprises a first vertical plate and a first transverse plate and a second transverse plate which are respectively arranged at the middle parts of the two sides of the first transverse plate, the first transverse plate and the second transverse plate are vertically connected with the first vertical plate, the lower side of the first vertical plate is connected with an inner side arc-shaped lower baffle, the upper side of the first vertical plate is connected with an inner side arc-shaped upper baffle, the first insulating piece is inserted into the mutual inductor through hole from one side to separate the piercing connecting pieces of each conductive system, the inner side arc-shaped lower baffle corresponds to the lower part of the inner side wall of the mutual inductor through hole, the inner side arc-shaped upper baffle corresponds to the upper part of the inner side wall of the mutual inductor through hole, the second insulating part is of a plate-shaped structure and is arranged from the upper part of the other side of the transformer to be in plug-in fit with the first insulating part.

Preferably, the joints of the first vertical plate and the first and second transverse plates are located at different heights in the vertical direction.

Preferably, the baffle under the inboard arc includes baffle under first inboard arc and the inboard arc of second, and baffle is located the one side that the first riser is equipped with first diaphragm under the first inboard arc, and baffle is located the one side that the first riser is equipped with the second diaphragm under the inboard arc of second.

Preferably, the inner side arc-shaped upper baffle plate only comprises a first inner side arc-shaped upper baffle plate, and the first inner side arc-shaped upper baffle plate is positioned on one side of the first vertical plate, which is provided with the first transverse plate.

Preferably, the lower side edge of the second insulating part is provided with a first avoidance groove, and a first slot used for being in plug-in fit with the first vertical plate is further arranged in the first avoidance groove.

Preferably, the system comprises a quadrupole conductive system, namely an A pole conductive system connected with the A of the power supply, a B pole conductive system connected with the B of the power supply, a C pole conductive system connected with the C of the power supply and an N pole conductive system connected with the N of the power supply, wherein the piercing connectors of the A pole conductive system, the B pole conductive system, the C pole conductive system and the N pole conductive system are respectively a first connector A, a second connector B, a third connector C and a fourth connector N; the first vertical plate, the first transverse plate and the first inner side arc-shaped upper baffle form a first insulation space for separating the first connecting piece A; the first vertical plate, the first transverse plate and the first inner side arc-shaped lower baffle form a second insulation space for separating the second connecting piece B; the first vertical plate, the second transverse plate and the second inner side arc-shaped lower baffle form a third insulation space for separating a third connecting piece C; the first vertical plate and the second horizontal plate form a fourth insulation space separating the fourth connecting member N.

Preferably, the first insulating part further comprises a first insulating block, and three sides of the first insulating block are respectively and vertically connected with one end sides of the first vertical plate, the first transverse plate and the first inner side arc-shaped upper baffle plate.

Preferably, the first insulating part further comprises a second insulating block, and two sides of the second insulating block are respectively and vertically connected with one end sides of the first vertical plate and the second transverse plate.

Preferably, the piercing connecting piece comprises a piercing section penetrating through the through hole of the mutual inductor, and a first connecting section and a second connecting section which are respectively connected with two ends of the piercing section, the first connecting section and the second connecting section are respectively used for being electrically connected with the first wiring end and the contact system, and the first connecting section and the second connecting section are perpendicularly connected with the piercing section in a bending manner; after the penetrating connecting piece connected with the first wiring end penetrates through a transformer through hole of the transformer, the first insulating piece is inserted into the transformer through hole from one side of the transformer to separate the penetrating connecting piece, the first insulating piece extends to the other side of the transformer, and the second insulating piece is downwards loaded from the upper side of the other side of the transformer and is spliced with the first insulating piece to form a transformer penetrating module.

Preferably, each pole conductive system comprises a contact system and a first wiring end and a second wiring end which are respectively arranged at two ends of the base, a plurality of parallel phase partition plates are arranged in the base to divide the base into a plurality of pole mounting grooves for mounting each pole conductive system, the contact system comprises a moving contact and a fixed contact which are respectively connected with the first wiring end and the second wiring end, a first wiring groove and a second wiring groove which are used for mounting the first wiring end and the second wiring end are formed at two ends of each pole mounting groove, a mutual inductor assembling groove for accommodating the mutual inductor piercing module is arranged in the base, the mutual inductor assembling groove is vertical to and penetrates through the plurality of pole mounting grooves, one side of the mutual inductor assembling groove is communicated with the first wiring groove, and the mutual inductor and the first wiring end of the mutual inductor piercing module are integrally arranged in the mutual inductor assembling groove and the first wiring groove.

The residual current operated circuit breaker is provided with the insulating pieces, the penetrating connecting pieces are used for separating the penetrating connecting pieces penetrating through all pole conductive systems of the mutual inductor, the creepage distance of the conductive systems can be effectively guaranteed, the reliability of the conductive systems is improved, the first insulating pieces are inserted into the through holes of the mutual inductor, the second insulating pieces are of plate structures, the second insulating pieces are installed from the upper side of the other side of the mutual inductor and are in inserting fit with the first insulating pieces, the assembly of the insulating protective housing can be conveniently realized under the condition that the penetrating connecting pieces of all pole conductive systems are installed firstly, the operation is simple, and the time consumption of working procedures is short.

In addition, the junction of first riser and first diaphragm and second diaphragm is located the not co-altitude of vertical direction for install the piercing connection spare at first diaphragm and second diaphragm department not only through first riser insulation, have certain difference in height moreover, increase creepage distance.

In addition, the first insulating part and the second insulating part have very simple structures, for example, the second insulating part has a simple plate-shaped structure, the material consumption is low, and the cost is low, if the inner arc-shaped upper baffle only comprises the first inner arc-shaped upper baffle, and the fourth insulating space corresponding to the N-pole conductive system is not provided with the arc-shaped upper baffle.

In addition, after the penetrating connecting piece connected with the first wiring end penetrates through a mutual inductor through hole of the mutual inductor, the first insulating piece is inserted into the mutual inductor through hole from one side of the mutual inductor to separate the penetrating connecting piece, the first insulating piece extends to the other side of the mutual inductor, the second insulating piece is downwards loaded from the upper side of the other side of the mutual inductor to be spliced and matched with the first insulating piece to form a mutual inductor penetrating module, the mutual inductor and the first wiring end of the mutual inductor penetrating module are integrally loaded into a mutual inductor assembling groove and a first wiring groove, and the assembly is simple and fast.

Drawings

Fig. 1 is a schematic view of a part of a residual current operated circuit breaker according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an embodiment of a transformer feedthrough module according to an embodiment of the utility model;

fig. 3 is another schematic structural diagram of an embodiment of a transformer feedthrough module according to an embodiment of the utility model;

FIG. 4 is a schematic view of a first insulator according to an embodiment of the present invention;

FIG. 5 is another schematic view of the first insulator according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of a second insulating member according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a feedthrough connection for a conductive system of each pole of an embodiment of the present invention.

Detailed Description

The following embodiments are provided in connection with the accompanying drawings to further illustrate the embodiments of the residual current operated circuit breaker of the present invention. The residual current operated circuit breaker of the present invention is not limited to the description of the following embodiments.

As shown in fig. 1, the residual current operated circuit breaker includes a base 1 and conductive systems arranged in the base 1, each conductive system includes a contact system and a first terminal 6 and a second terminal respectively arranged at two ends of the base 1, the contact system includes a moving contact and a static contact respectively connected with the first terminal 6 and the second terminal, the moving contact is mounted on a contact support rotating shaft, the static contact is fixedly mounted in the base 1, a moving contact on the moving contact is arranged corresponding to a static contact on the static contact, an arc extinguish chamber is arranged on the static contact, and an operating mechanism of the circuit breaker drives the contact support rotating shaft to rotate so as to enable the moving contact of the moving contact to contact with and separate from the static contact of the static contact, thereby realizing switching on and switching off of the circuit breaker. The first wiring terminal 6 is connected with the contact system through a piercing connector 5, a mutual inductor 2 is arranged between the first wiring terminal 6 and the contact system, and the piercing connector 5 of each pole conducting system penetrates through the mutual inductor 2 and then is connected with the contact system of the corresponding pole; when the fault current or the personal electric shock occurs in the circuit connected with the circuit breaker, as long as the fault current reaches the setting action current value, the output signal of the secondary winding of the mutual inductor is triggered, and the residual current operated circuit breaker is operated through the electric leakage release, so that the power supply is cut off to play the roles of fault current and electric shock protection.

As shown in fig. 1-2 and 7, the residual current operated circuit breaker of this embodiment is a four-pole circuit breaker, and includes four-pole conductive systems, which are an a-pole conductive system connected to an a of a power supply, a B-pole conductive system connected to a B of the power supply, a C-pole conductive system connected to a C of the power supply, and an N-pole conductive system connected to an N of the power supply, respectively, a first terminal 6 of each pole conductive system is connected to a contact system through a piercing connector 5, and the piercing connector 5 of each pole conductive system is connected to a moving contact or a fixed contact of the contact system of a corresponding pole after passing through the transformer 2. The piercing connectors 5 of the a-pole, B-pole, C-pole and N-pole conductive systems of this embodiment are the first connector 5A, the second connector 5B, the third connector 5C and the fourth connector 5N, respectively, and the first terminals of each pole conductive system are the a-phase first terminal 6A connected to the a of the power supply, the B-phase first terminal 6B connected to the B, the C-phase first terminal 6C connected to the C and the N-phase first terminal 6N connected to the N, respectively; the a-phase first terminal 6A, B-phase first terminal 6B, C-phase first terminal 6C and the N-phase first terminal 6N are connected to the contact system of the corresponding pole through the first connection piece 5A, the second connection piece 5B, the third connection piece 5C and the fourth connection piece 5N, respectively.

As shown in fig. 7, the feedthrough connector 5 includes a feedthrough section 51 penetrating through the through hole of the transformer, and a first connection section 52 and a second connection section 53 respectively connected to two ends of the feedthrough section 51, the first connection section 52 and the second connection section 53 are respectively used for electrically connecting the first terminal 6 and the contact system, and the first connection section 52 and the second connection section 53 are perpendicularly connected to the feedthrough section 51.

As shown in fig. 2-5, the residual current operated circuit breaker further includes a first insulating member 3 and a second insulating member 4 which are inserted and matched, the first insulating member 3 includes a first vertical plate 33, and a first transverse plate 31 and a second transverse plate 32 which are respectively disposed at the middle portions of both sides of the first transverse plate 32, the first transverse plate 31 and the second transverse plate 32 are vertically connected with the first vertical plate 33 to form a cross-shaped structure, an inner arc-shaped lower baffle 34 is connected to the lower side edge of the first vertical plate 33, an inner arc-shaped upper baffle is connected to the upper side edge of the first vertical plate 33, the first insulating part 3 is inserted into the through hole of the mutual inductor from one side of the mutual inductor to separate the piercing connectors 5 of each conductive system, the inner arc-shaped lower baffle 34 corresponds to the lower part of the inner side wall of the through hole of the mutual inductor, the inner arc-shaped upper baffle corresponds to the upper part of the inner side wall of the through hole of the mutual inductor, the second insulating part 4 is of a plate-shaped structure and is arranged from the upper part of the other side of the mutual inductor 2 to be in plug-in fit with the first insulating part 3.

The residual current operated circuit breaker is provided with the insulating parts, the penetrating connecting parts 5 are used for separating the conducting systems of all poles of the mutual inductor, the creepage distance of the conducting systems can be effectively guaranteed, the reliability of the conducting systems is improved, the first insulating part 3 is inserted into the through hole of the mutual inductor, the second insulating part 4 is of a plate-shaped structure, and is arranged above the other side of the mutual inductor 2 to be in inserting fit with the first insulating part 3, the assembly of an insulating protective housing can be conveniently realized under the condition that the penetrating connecting parts 5 of all the pole conducting systems are installed firstly, the operation is simple, and the time consumption of the working procedure is short.

Preferably, the joints of the first vertical plate 33 and the first and second horizontal plates 31 and 32 on the first insulator 3 are located at different heights in the vertical direction, so that the piercing connectors 5 installed at the first and second horizontal plates 31 and 32 are insulated by the first vertical plate 33 and have a certain height difference, thereby increasing the creepage distance.

Preferably, the inner arc-shaped lower baffle 34 includes a first inner arc-shaped lower baffle 341 and a second inner arc-shaped lower baffle 342, the first inner arc-shaped lower baffle 341 is located on one side of the first vertical plate 33 where the first horizontal plate 31 is located, and the second inner arc-shaped lower baffle 342 is located on one side of the first vertical plate 33 where the second horizontal plate 32 is located. Preferably, the inner arc-shaped upper baffle only comprises a first inner arc-shaped upper baffle 343, the first inner arc-shaped upper baffle 343 is located on one side of the first vertical plate 33 where the first transverse plate 31 is arranged, and no inner arc-shaped upper baffle is arranged above the position corresponding to the fourth connecting piece 5N of the N-pole conductive system, so that the material consumption is low, and the cost is low. The first vertical plate 33, the first transverse plate 31 and the first inner arc-shaped upper baffle 343 form a first insulation space for separating the first connecting piece 5A; the first vertical plate 33, the first transverse plate 31 and the first inner arc-shaped lower baffle 341 form a second insulation space for separating the second connecting piece 5B; the first vertical plate 33, the second transverse plate 32 and the second inner arc-shaped lower baffle 342 form a third insulation space for separating the third connecting piece 5C; the first vertical plate 33 and the second transverse plate 32 form a fourth insulation space for separating the fourth connecting piece 5N, and the fourth insulation space corresponding to the N-pole conductive system is not provided with an arc-shaped upper baffle plate, so that the material consumption is less and the cost is low. Of course, the inner side arc-shaped upper baffle plate may also include a second inner side arc-shaped upper baffle plate located on the side of the first vertical plate 33 where the second transverse plate 32 is located, as required.

Preferably, the first insulating member 3 further includes a first insulating block 351, and three sides of the first insulating block 351 are respectively and vertically connected to one end sides of the first vertical plate 33, the first horizontal plate 31 and the first inner arc-shaped upper baffle 343 to form a first insulating space. The first insulating member 3 further includes a second insulating block 352, and two sides of the second insulating block 352 are respectively and vertically connected with one end sides of the first vertical plate 33 and the second horizontal plate 32 to form a fourth insulating space. The first insulating block 351 and the second insulating block 352 are only arranged in a necessary insulating space, so that the material consumption is reduced, and the effect of limiting and matching with the transformer is also achieved.

Preferably, as shown in fig. 5, the second insulating member 4 is a whole square plate-shaped structure, a first avoiding groove 42 is formed in the lower side edge of the second insulating member 4, the first avoiding groove 42 is used for avoiding the first vertical plate 33, the first horizontal plate 31, the second horizontal plate 32 and the second connecting section 53 of the penetrating connecting member 5, a first slot 41 used for being in plug-in fit with the first vertical plate 33 is further formed in the first avoiding groove 42, the first avoiding groove 42 is in an inverted U shape, and the first slot 41 is arranged on the bottom edge of the U-shaped groove.

Preferably, the penetrating connecting piece 5 of each pole conducting system of the embodiment is connected with the corresponding first wiring terminal 6, after the penetrating connecting piece 5 connected with the first wiring terminal 6 penetrates through a transformer through hole of the transformer 2, the first insulating piece 3 is inserted into the transformer through hole from one side of the transformer 2 to separate the penetrating connecting piece 5, the first insulating piece 3 extends to the other side of the transformer 2, the second insulating piece 4 is downwards assembled from the upper side of the other side of the transformer 2 and is spliced with the first insulating piece 3 to form a transformer penetrating module, and the transformer penetrating module is integrally assembled in the base 1 of the circuit breaker. As shown in fig. 1, a plurality of parallel phase-to-phase partitions are arranged in a base 1 to partition the base 1 into a plurality of pole mounting grooves 12 for mounting each pole conductive system, each contact system includes a moving contact and a fixed contact respectively connected with a first terminal 6 and a second terminal, a first wiring groove 11 and a second wiring groove for mounting the first terminal 6 and the second terminal are formed at two ends of each pole mounting groove 12, a transformer assembling groove 10 for accommodating a transformer feedthrough module is arranged in the base 1, the transformer assembling groove 10 is perpendicular to and penetrates through the plurality of pole mounting grooves 12, one side of the transformer assembling groove 10 is communicated with the first wiring groove 11, and a transformer 2 and the first terminal 6 of the transformer feedthrough module are integrally installed in the transformer assembling groove 10 and the first wiring groove 11.

Specifically, during assembly, after four penetrating connectors 5 connected with a first terminal 6 penetrate through a transformer through hole of a transformer 2, a first insulating part 3 is inserted into the gap between the penetrating connectors 5 and the transformer through hole, the first insulating space, the second insulating space, the third insulating space and the fourth insulating space of the first insulating part 3 respectively separate the penetrating connectors 5 of an A pole conducting system, a B pole conducting system, a C pole conducting system and an N pole conducting system, an inner arc lower baffle 34 is correspondingly supported with the inner side wall of the transformer through hole, an inner arc upper baffle corresponds to the upper part of the inner side wall of the transformer through hole, then a second insulating part 4 is taken to be assembled from the upper part of the other side of the transformer 2, a first vertical plate 33 of the first insulating part 3 is inserted into a first slot 41 of the second insulating part 4 for limiting and fixing to form a transformer penetrating module, then the transformer penetrating module is installed into a transformer assembling groove 10, the first terminal 6 is also inserted into the first terminal groove 11, and the second connecting section 53 of each pole feedthrough connection 5 is connected to the movable contact, typically via a tripping device.

Preferably, the first insulating part 3 and the second insulating part 4 are made of thermoplastic materials with high temperature resistance and good insulating property, and the first insulating part 3 and the second insulating part 4 are respectively integrally injection-molded, so that the insulation tape does not need to be wound on the piercing connector 5, and the problem that in the prior art, the insulation damage or the falling-off problem caused by the fact that the interphase short circuit is easily caused in the production assembly and the transportation process is solved by winding the insulation tape (or sleeving a heat shrinkable tube).

The foregoing is a more detailed description of the utility model in connection with specific preferred embodiments and it is not intended that the utility model be limited to these specific details. For those skilled in the art to which the utility model pertains, several simple deductions or substitutions can be made without departing from the spirit of the utility model, and all shall be considered as belonging to the protection scope of the utility model.

Claims (10)

1. The utility model provides a residual current operated circuit breaker, includes base (1), sets up multipolar conducting system and mutual-inductor (2) in base (1), and mutual-inductor (2) set up in base (1), and every utmost point conducting system is including piercing through connecting piece (5) of the mutual-inductor through-hole that passes mutual-inductor (2), its characterized in that:

the insulating device also comprises a first insulating part (3) and a second insulating part (4) which are matched in an inserting way, wherein the first insulating part (3) comprises a first vertical plate (33), a first transverse plate (31) and a second transverse plate (32) which are respectively arranged at the middle parts of the two sides of the first transverse plate (32), the first transverse plate (31) and the second transverse plate (32) are vertically connected with the first vertical plate (33), an inner arc-shaped lower baffle (34) is connected with the lower side edge of the first vertical plate (33), an inner arc-shaped upper baffle is connected with the upper side edge of the first vertical plate (33), the first insulating part (3) is inserted into the through hole of the mutual inductor from one side of the mutual inductor to separate the piercing connectors (5) of each conducting system, the inner arc-shaped lower baffle (34) corresponds to the lower part of the inner side wall of the through hole of the mutual inductor, the inner arc-shaped upper baffle corresponds to the upper part of the inner side wall of the through hole of the mutual inductor, the second insulating part (4) is of a plate-shaped structure and is arranged above the other side of the mutual inductor (2) to be in plug-in fit with the first insulating part (3).

2. The residual current operated circuit breaker according to claim 1, characterized in that: the connecting positions of the first vertical plate (33) and the first transverse plate (31) and the second transverse plate (32) are located at different heights in the vertical direction.

3. The residual current operated circuit breaker according to claim 1, characterized in that: baffle (34) under inboard arc includes baffle (341) under first inboard arc and baffle (342) under the inboard arc, and baffle (341) are located one side that first riser (33) were equipped with first diaphragm (31) under the first inboard arc, and baffle (342) are located one side that first riser (33) were equipped with second diaphragm (32) under the inboard arc of second.

4. A residual current operated circuit breaker according to claim 3, wherein: the inner side arc-shaped upper baffle plate only comprises a first inner side arc-shaped upper baffle plate (343), and the first inner side arc-shaped upper baffle plate (343) is located on one side, provided with the first transverse plate (31), of the first vertical plate (33).

5. The residual current operated circuit breaker according to claim 1, characterized in that: a first avoidance groove (42) is formed in the lower side edge of the second insulating piece (4), and a first slot (41) which is used for being in plug-in fit with the first vertical plate (33) is further arranged in the first avoidance groove (42).

6. The residual current operated circuit breaker according to claim 4, characterized in that: the four-pole conductive system comprises a four-pole conductive system, namely an A-pole conductive system connected with an A of a power supply, a B-pole conductive system connected with a B of the power supply, a C-pole conductive system connected with a C of the power supply and an N-pole conductive system connected with an N of the power supply, wherein the piercing connectors (5) of the A-pole conductive system, the B-pole conductive system, the C-pole conductive system and the N-pole conductive system are respectively a first connector (5A), a second connector (5B), a third connector (5C) and a fourth connector (5N); the first vertical plate (33), the first transverse plate (31) and the first inner side arc-shaped upper baffle plate (343) form a first insulation space for separating the first connecting piece (5A); the first vertical plate (33), the first transverse plate (31) and the first inner side arc-shaped lower baffle (341) form a second insulation space for separating the second connecting piece (5B); the first vertical plate (33), the second transverse plate (32) and the second inner side arc-shaped lower baffle plate (342) form a third insulation space for separating a third connecting piece (5C); the first vertical plate (33) and the second horizontal plate (32) form a fourth insulation space separating the fourth connecting piece (5N).

7. The residual current operated circuit breaker according to claim 6, characterized in that: the first insulating piece (3) further comprises a first insulating block (351), and three sides of the first insulating block (351) are respectively and vertically connected with one end sides of the first vertical plate (33), the first transverse plate (31) and the first inner side arc-shaped upper baffle plate (343).

8. The residual current operated circuit breaker according to claim 6, characterized in that: the first insulating part (3) further comprises a second insulating block (352), and two sides of the second insulating block (352) are respectively and vertically connected with one end sides of the first vertical plate (33) and the second transverse plate (32).

9. The residual current operated circuit breaker according to claim 1, characterized in that: the feed-through connecting piece (5) comprises a feed-through section (51) penetrating through a through hole of the mutual inductor, and a first connecting section (52) and a second connecting section (53) which are respectively connected with two ends of the feed-through section (51), wherein the first connecting section (52) and the second connecting section (53) are respectively used for being electrically connected with a first wiring terminal (6) and a contact system, and the first connecting section (52) and the second connecting section (53) are perpendicularly connected with the feed-through section (51) in a bending manner; after penetrating the mutual-inductor through-hole that mutual-inductor (2) was passed in through-connecting piece (5) of being connected with first terminal (6), first insulating part (3) are separated through-connecting piece (5) in inserting the mutual-inductor through-hole from mutual-inductor (2) one side, and first insulating part (3) stretches mutual-inductor (2) opposite side, and second insulating part (4) are followed mutual-inductor (2) opposite side top and are down packed into and cooperate into mutual-inductor through-hole module with first insulating part (3) grafting.

10. The residual current operated circuit breaker according to claim 9, characterized in that: each pole of conductive system comprises a contact system and a first wiring end (6) and a second wiring end which are respectively arranged at two ends of a base (1), a plurality of parallel phase partition plates are arranged in the base (1) to divide the base (1) into a plurality of pole mounting grooves (12) for mounting each pole of conductive system, the contact system comprises a moving contact and a fixed contact which are respectively connected with the first wiring end (6) and the second wiring end, a first wiring groove (11) and a second wiring groove which are used for mounting the first wiring end (6) and the second wiring end are formed at two ends of each pole mounting groove (12), a transformer assembling groove (10) for accommodating a transformer piercing module is arranged in the base (1), the transformer assembling groove (10) is vertical to and penetrates through the plurality of pole mounting grooves (12), one side of the transformer assembling groove (10) is communicated with the first wiring groove (11), and a transformer (2) and the first wiring end (6) of the transformer piercing module are integrally arranged in the transformer assembling groove (10) and the first wiring groove (6) In the wire groove (11).

Images