CN214099521U - Residual current circuit breaker device - Google Patents

Abstract

The utility model relates to the field of low-voltage apparatus, in particular to an electric leakage circuit breaker device, which comprises an electric leakage circuit breaker, a function expansion base and a function expansion module which is spliced and matched with the function expansion base; the function expansion base is arranged on one side of the residual current circuit breaker and comprises a module slot 20, and the function expansion module is inserted into the module slot; the utility model discloses residual current circuit breaker device, its function extension module assembly/dismantlement are convenient.

Description

Residual current circuit breaker device

Technical Field

The utility model relates to a low-voltage apparatus field, concretely relates to leakage circuit breaker device.

Background

Low-voltage circuit breakers, also known as automatic air switches or automatic air circuit breakers, can be used for distributing electrical energy, protecting lines and power supply equipment in the event of overload or short-circuit faults, and also for infrequent switching of lines and for infrequent starting of motors. As an important product of a low-voltage circuit breaker, the leakage circuit breaker generally has functions of short-circuit protection, overload protection, leakage protection, overvoltage and undervoltage protection, leakage self-checking and the like, if a user further needs functions of surge protection, shunt tripping, fault alarming, fault display, auxiliary contacts and the like, the traditional realization mode is to re-connect an accessory with the function in a distribution box, wiring is complex, and the occupied space is large.

Disclosure of Invention

An object of the utility model is to overcome prior art's defect, provide a residual current circuit breaker device, its function extension module assembly/dismantlement is convenient.

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

an electric leakage circuit breaker device comprises an electric leakage circuit breaker 1, a function expansion base 2 and a function expansion module 3 which is in plug-in fit with the function expansion base 2; the function extension base 2 is arranged on one side of the residual current circuit breaker 1, the function extension base 2 comprises a module slot 20, and the function extension module 3 is inserted into the module slot 20.

Preferably, the residual current circuit breaker device further comprises a guide structure for guiding and limiting the function expansion module 3 during the insertion of the function expansion module 3 into the module slot 20.

Preferably, the guiding structure comprises a guiding rib and a guiding groove which are matched with each other, wherein one guiding rib is arranged on the function expansion base 2, and the other guiding rib is arranged on the function expansion module 3.

Preferably, the function expansion base 2 includes an elastic clip-type conductive member, and the function expansion module 3 includes a module plug, and the module plug is in plug-in fit with the elastic clip-type conductive member.

Preferably, the function expansion module 3 is inserted into the module slot 20 from a first direction or inserted into the module slot 20 from a second direction, and the first direction and the second direction are perpendicular to each other.

Preferably, the module slot 20 is a u-shaped slot, and the function expansion module 3 is inserted into the module slot 20 from the open end of the u-shaped structure or from the side of the u-shaped structure opposite to the leakage breaker 1.

Preferably, the module slot 20 is a right-angle slot, the first direction is opposite to a side wall of the right-angle slot, and the second direction is opposite to another side wall of the right-angle slot.

Preferably, the function extension module 3 is a surge protection module, a shunt trip module 3a, an automatic reclosing module 3b, an auxiliary contact module 3c or a fault alarm indication module 3 d.

Preferably, the electrical leakage circuit breaker 1 is a two-phase circuit breaker, and includes an L pole circuit and an N pole circuit that are arranged side by side at an interval, the function extension base 2 includes a PE pole circuit, the PE pole circuit and the L pole circuit are respectively located on two sides of the N pole circuit, and the PE pole circuit is matched with the function extension module 3.

Preferably, the residual current circuit breaker 1 comprises a breaker casing 1a, the breaker casing 1a comprises a first partition plate 1c arranged in the middle of the breaker casing 1a, the breaker casing 1a is divided into a first space and a second space by the first partition plate 1c, an L-pole circuit and an N-pole circuit are respectively positioned at two sides of the first partition plate 1c, the L-pole circuit is positioned in the first space, and the N-pole circuit is positioned in the second space; the function extension base 2 comprises a second partition plate 2a matched with the shell 1a of the circuit breaker, the N-pole circuit is positioned between the first partition plate 1c and the second partition plate 2a, and the PE-pole circuit and the N-pole circuit are respectively arranged on two sides of the second partition plate 2 a.

Preferably, the N-pole circuit includes an N-pole moving contact 110d and an N-pole stationary contact 111d, the circuit breaker housing 1a includes an N-pole arc extinguishing chamber, one end of the N-pole moving contact 110d is inserted into the N-pole arc extinguishing chamber from one end of the N-pole arc extinguishing chamber, the N-pole moving contact and the N-pole stationary contact 111d are closed/opened in the N-pole arc extinguishing chamber, the other end of the N-pole arc extinguishing chamber is provided with an arc cutting sidewall 212c, the arc cutting sidewall 212c is provided with a plurality of arc extinguishing holes arranged at intervals, and the circuit breaker housing 1a further includes an exhaust hole 214c relatively matched with the arc cutting sidewall 212 c.

Preferably, a plurality of wiring ribs 10a are provided on a side of the first separator 1c facing the L-pole circuit, and the lead wire of the L-pole circuit is placed on the wiring ribs 10 a.

Preferably, the PE pole circuit includes a base power supply terminal 20b, and the base power supply terminal 20b includes three elastic clip-type conductive members, namely, a grounding conductive member 200b, an L pole conductive member 201b connected to the L pole circuit, and an N pole conductive member 202b connected to the N pole circuit.

Preferably, the electrical leakage circuit breaker 1 further comprises an electrical leakage test circuit, the electrical leakage test circuit comprises a test circuit R and a switch circuit connected in series between the L-pole circuit and the N-pole circuit, the PE-pole circuit further comprises a switch element 23b, and the switch element 23b is connected in parallel with the switch circuit; the function expansion module 3 is a surge protection module or a shunt tripping module 3a, and the function expansion module 3 is in driving fit with the switch piece 23 b.

Preferably, the PE pole circuit further includes a base signal component 25b, and the external control signal is input into the function extension module 3 through the base signal component 25 b; the function expansion module 3 is a shunt tripping module 3a or an automatic reclosing module 3 b.

Preferably, the residual current circuit breaker 1 and the function expansion base 2 are of an integrated structure or a detachable split structure.

The utility model discloses a leakage circuit breaker device, its function extension base and function extension module cooperation of pegging graft, the user can be according to the convenient change function extension module of different use scenes and function demand.

In addition, the module slot can be set to different shapes and the function expansion module can be inserted into the module slot from different directions, so that the function expansion base can be matched with more function expansion modules of different types (structures and function types).

Drawings

Fig. 1 is a schematic perspective view of the electrical leakage breaker of the present invention, at least showing the position relationship between the electrical leakage breaker and the function extension base;

fig. 2 is a schematic structural diagram of the electrical leakage breaker apparatus of the present invention, showing at least the structure of the L-pole circuit;

fig. 3 is a schematic structural diagram of the electrical leakage breaker apparatus of the present invention, at least showing the structures of the N-pole circuit and the electrical leakage test circuit, the electrical leakage breaker being in the open state;

fig. 4 is a schematic structural diagram of the electrical leakage breaker apparatus of the present invention, at least showing the structure of the base power terminal of the N-pole circuit and the function extension base;

fig. 5 is a schematic structural diagram of the electrical leakage breaker apparatus of the present invention, at least showing the structures of the N-pole circuit and the electrical leakage test circuit, the electrical leakage breaker being in a closing state;

fig. 6 is a schematic structural diagram of the leakage test circuit of the present invention;

fig. 7 is a schematic structural diagram of the function expanding base of the present invention, at least showing the base power terminal, the switch member and the base circuit board;

fig. 8 is a schematic structural view of the function expanding base of the present invention, at least showing the base power terminal, the switch member, the base circuit board and the base signal assembly;

fig. 9 is a schematic structural view of a second separator of the present invention;

fig. 10 is a schematic structural diagram of a first mating manner of the function expansion module and the function expansion base according to the present invention;

fig. 11 is a schematic structural diagram of a second manner of matching the function expansion module and the function expansion base according to the present invention;

fig. 12 is a schematic structural diagram of a third mating manner of the function expansion module and the function expansion base according to the present invention;

fig. 13 is a schematic structural diagram of a fourth manner of matching the function expansion module and the function expansion base according to the present invention;

fig. 14 is a schematic structural view of the shunt trip module of the present invention, showing at least the structure of the first module housing;

fig. 15 is a schematic view of the matching structure of the shunt trip module, the base signal assembly and the switch member of the present invention;

fig. 16 is a schematic structural view of the automatic reclosing module of the present invention cooperating with the residual-current circuit breaker;

fig. 17 is a schematic structural diagram of the automatic reclosing module of the present invention;

fig. 18 is a schematic structural view of an auxiliary contact module according to the present invention;

fig. 19 is a schematic structural view of a third handle of the present invention;

fig. 20 is a schematic structural diagram of the malfunction alarm indication module of the present invention;

fig. 21 is a circuit topology diagram of the leakage breaker of the present invention.

Detailed Description

The following description will further describe the embodiment of the electrical leakage breaker apparatus according to the present invention with reference to the embodiments shown in fig. 1 to 21. The electrical leakage breaker of the present invention is not limited to the description of the following embodiments.

As shown in fig. 1 and 10-13, the electrical leakage breaker device of the present invention comprises an electrical leakage breaker 1, a function extension base 2 and a function extension module 3 inserted and matched with the function extension base 2. Further, electric leakage circuit breaker 1 and function extension base 2 cooperation are used, and electric leakage circuit breaker 1 and function extension base 2 formula structure as an organic whole or detachable split type structure as an organic whole.

Preferably, as shown in fig. 1 and 10-13, the function expansion base 2 is arranged on one side of the residual current circuit breaker 1, the function expansion base 2 comprises a module slot 20, and the function expansion module 30 is inserted into the module slot 20. Further, as shown in fig. 1, 10-13, the residual current circuit breaker device further includes a guide structure for guiding and restraining the function expansion module 3 during the insertion of the function expansion module 3 into the module slot 20. Further, as shown in fig. 1 and 10-13, the guiding structure includes a guiding rib and a guiding groove, which are used in cooperation, one of which is disposed on the function expansion base 2, and the other is disposed on the function expansion module 3.

Preferably, as shown in fig. 10-11, the module slot 20 is a u-shaped slot, and the function-expanding module 3 is inserted into the module slot 20 from the open end of the u-shaped structure or from one side of the u-shaped structure.

Preferably, as shown in fig. 12 to 13, the module slot 20 is a right-angled slot, and the function expansion module 3 is inserted into the module slot 20 from a first direction or a second direction, the first direction is opposite to one side wall of the right-angled slot, and the second direction is opposite to the other side wall of the right-angled slot.

The module slot 20 may be provided in different shapes and the function expansion modules 3 may be inserted into the module slot 20 from different directions, so that the function expansion base 2 can be fitted with more different types (structures and function types) of function expansion modules 3.

Preferably, the residual current circuit breaker 1 includes a short-circuit protection mechanism, an overload protection mechanism, a leakage protection mechanism, an overvoltage/undervoltage protection mechanism, and a leakage self-checking mechanism. Of course, the mechanism included in the residual current circuit breaker 1 may be increased or decreased according to actual needs.

Preferably, function extension module 3 is surge protection module, shunt release module 3a, automatic reclosing module 3b, auxiliary contact module 3c or malfunction alerting instruction module 3d, and above-mentioned module all can be pegged graft with module slot 20 and cooperate, and the user can change the function extension module that has different functions as required, makes the utility model discloses the earth leakage circuit breaker device can be applicable to more use scenes.

Preferably, as shown in fig. 2-5, 7 and 9, the residual current circuit breaker 1 comprises an L pole circuit and an N pole circuit which are arranged side by side at intervals, and a breaker casing 1 a; the circuit breaker shell 1a comprises a first partition plate 1c arranged therein, and the L-pole circuit and the N-pole circuit are both arranged in the circuit breaker shell 1a and are respectively positioned at two sides of the first partition plate 1 c; the function expansion base 2 comprises a PE pole circuit and a second partition plate 2a matched with the shell 1a of the circuit breaker, the N pole circuit is positioned between a first partition plate 1c and the second partition plate 2a, and the PE pole circuit and the N pole circuit are respectively arranged on two sides of the second partition plate 2 a; l utmost point circuit, N utmost point circuit and PE utmost point circuit are set up respectively in the space of difference, are favorable to improving the utility model discloses the inside insulating properties of electric leakage circuit breaker device.

Preferably, as shown in fig. 3, 5, and 9, the N-pole circuit includes an N-pole moving contact 110d and an N-pole stationary contact 111d, the electrical leakage circuit breaker 1 includes an N-pole arc extinguishing chamber, one end of the N-pole moving contact 110d is inserted into the N-pole arc extinguishing chamber from one end of the N-pole arc extinguishing chamber, and is closed/opened with the N-pole stationary contact 111d in the N-pole arc extinguishing chamber, the other end of the N-pole arc extinguishing chamber is provided with an arc cutting sidewall 212c, the arc cutting sidewall 212c is provided with a plurality of arc extinguishing holes arranged at intervals, and the electrical leakage circuit breaker further includes an exhaust hole 214c relatively matched with the arc cutting sidewall 212 c; the N-pole arc extinguishing chamber can prevent electric arc from diffusing in the N-pole circuit, is beneficial to improving the insulativity in the N-pole circuit, and is beneficial to improving the arc extinguishing efficiency and the arc extinguishing performance.

As shown in fig. 8, 14, 15 and 21, the present invention is an implementation of the electrical leakage breaker apparatus.

As shown in fig. 14 and 15, the function expansion module 3 is a shunt trip module 3a, and the shunt trip module 3a includes a shunt trip unit 36 a; as shown in fig. 8, the function extension base 2 includes a switch piece 23b in driving cooperation with the shunt release 36; as shown in fig. 21, the residual current circuit breaker 1 includes a residual current testing circuit, the residual current testing circuit includes a testing resistor R, and the switching element 23b and the testing resistor R are connected in series between the phase circuit and the N-pole circuit of the residual current circuit breaker 1; the shunt tripping module 3a receives an external tripping signal to enable the shunt tripping device 36a to act, and the driving switch piece 23a is conducted to enable the residual current circuit breaker 1 to be switched off. The shunt tripping module 3 is simple and convenient to install, and realizes the shunt tripping working mode of the leakage circuit breaker device; and the shunt tripping module can be used after being plugged on the function extension base, so that plug and play are realized, and the working efficiency of a user is improved.

Note that, when the electrical leakage breaker 1 is a two-phase breaker, the phase circuit of the electrical leakage breaker 1 is an L-pole circuit.

Preferably, as shown in fig. 14 and 15, the shunt trip module 3a includes a first power terminal 31a and a first signal terminal 34 a; as shown in fig. 4 and 8, the function expanding base 2 includes a base power terminal 20b and a base signal component 25b, the base signal component 25b includes a base signal terminal 252b, the first power terminal 31a is plugged and matched with the base power terminal 20b, and the first signal terminal 34a is in contact and matched with the base signal terminal 252 b. The first power supply terminal 31a is matched with the base power supply terminal 20b, and the first signal terminal 34a is matched with the base signal terminal 252b, so that the convenience of wiring the shunt tripping module 3a and the function extension base 2 is improved. Further, as shown in fig. 8, the module slot 20 is a u-shaped slot, the base power terminal 20b and the switch element 23b are respectively disposed at the bottom of the u-shaped slot 20, the base signal element 25b is disposed at the sidewall of the u-shaped slot 20, and the first power terminal 31a and the base power terminal 20b can be inserted into each other and the first signal terminal 34a and the base signal terminal 252b can be contacted with each other as the shunt tripping module 3a is inserted into the module socket 20, so as to greatly improve the assembly efficiency of the shunt tripping module 3a and the function expansion base 2.

As shown in fig. 1, 7, 16 and 17, the present invention is another implementation manner of the electrical leakage breaker apparatus.

As shown in fig. 16 and 17, the function expansion module 3 is an automatic reclosing module 3b, the automatic reclosing module 3b includes a second module housing 30b, and a motor 32b, a gear set in driving connection with the motor 32b, a driving link 34b, and a second handle 31b respectively disposed in the second module housing 30b, the second handle 31b is pivotally disposed on the second module housing 30b, and the gear set is in driving fit with the second handle 31b through the driving link 34 b; the residual current circuit breaker 1 comprises a first handle 11b, and a second handle 31b is connected with the first handle 11b in a driving mode and acts synchronously. The automatic reclosing module 3b is in plug-in fit with the function extension base 2, is simple and convenient to assemble, and realizes remote automatic reclosing operation of the residual current circuit breaker 1. Further, as shown in fig. 16, the second handle 31b includes a second rotating portion 311b pivotally disposed on the second module housing 30b and a second toggle portion 310b disposed on the periphery of the second rotating portion 311b, wherein one end of the second toggle portion 310b is connected to the second rotating portion 311b, and the other end is detachably and drivingly connected to the first handle 11 b. Further, as shown in fig. 16, a second slot is disposed at one end of the handle shifting portion 310b, and the first handle 11b is clamped in the second slot. The second handle 31b and the first handle 11b are convenient to assemble/disassemble, and the assembly efficiency of the automatic reclosing module 3b and the function expansion base 2 is further improved.

Preferably, as shown in fig. 17, the second handle 31b further includes a second passive portion 312b disposed on the periphery of the second rotating portion 311b of the second handle 31 b; the gear set of the automatic reclosing module 3b includes a driving gear 35b pivotally disposed on the second module housing 30b, and one end of the driving link 34b is drivingly connected to the driving gear 35b, and the other end is drivingly engaged with the second driven portion 312 b. As shown in fig. 2, the residual current circuit breaker 1 further includes an operating mechanism 12b, the operating mechanism 12b includes a latch member 122b and a trip member 123b which are in latch fit, and the trip member 122b is in driving fit with the driving gear 35 b; the driving gear 35b rotates in a first direction, and the residual current circuit breaker 1 is switched on by sequentially driving the driving connecting rod 34b, the second handle 31b and the first handle 11b which are matched; the driving gear 35b rotates in the second direction to drive the trip catch 123b to rotate and release the locking and buckling cooperation with the locking and buckling piece 122b, so that the residual current circuit breaker 1 is opened. The automatic reclosing module 3b can realize automatic closing of the residual current circuit breaker 1 and automatic opening of the residual current circuit breaker 1.

As shown in fig. 1, 7 and 20, the present invention is another implementation manner of the electrical leakage breaker apparatus.

As shown in fig. 20, the function extension module 3 is a failure alarm indication module 3d, and the failure alarm indication module 3d includes a fourth module housing 30d, an alarm circuit board 34d, an alarm element, and a fourth power terminal 36d, which are respectively disposed in the fourth module housing 30 d; the alarm element is arranged on an alarm circuit board 34d, and the fourth power supply terminal 36d is connected with the alarm circuit board 34d and is in plug-in fit with the function expansion base 2. The fault alarm indication module 3d and the function expansion base 2 are fast and convenient to assemble, and can send an alarm signal to remind a user of timely removing faults when faults occur, so that normal operation of power equipment is guaranteed. Further, the alarm element comprises an audible alarm element 37d, and/or the alarm element comprises a luminous alarm element 32 d.

As shown in fig. 1, 7, 18 and 19, the present invention is another implementation manner of the electrical leakage breaker apparatus.

As shown in fig. 18, the function expansion module 3 is an auxiliary contact module 3c, the auxiliary contact module 3c includes a third module housing 30c, a third handle 31c and at least one contact group disposed in the third module housing 30c, the third handle 31c is pivotally disposed on the third module housing 30c, each auxiliary contact group includes an auxiliary moving contact 320c and an auxiliary stationary contact 321c, and the auxiliary moving contact 320c is drivingly connected to the third handle 31 c; the residual current circuit breaker 1 comprises a first handle 11b which is connected with a third handle 31c in a driving way and synchronously acts. The third handle 31c is connected with the first handle 11b in a driving way and acts synchronously, so that the auxiliary contact module 3c and the residual current circuit breaker 1 act synchronously. The auxiliary contact module 3c and the function expansion base 2 are simple and convenient to assemble, synchronous action of the auxiliary moving contact and the moving contact of the leakage circuit breaker is achieved, and convenience is brought to function expansion of the leakage circuit breaker device.

As shown in fig. 3-6 and 21, it is another implementation manner of the electrical leakage breaker apparatus of the present invention.

The residual current circuit breaker 1 comprises a circuit breaker shell 1a, and at least one phase pole circuit, an N pole circuit, a residual current test circuit and a test button 13g which are respectively arranged in the circuit breaker shell 1 a; the phase circuit comprises a first handle 11b and an operating mechanism 12b which are connected in a driving mode, and the phase circuit and the N-pole circuit are synchronously closed/disconnected; the leakage test circuit comprises a test resistor R and a switch circuit which are connected in series, the switch circuit comprises a first switch S1 and a second switch S2 which are connected in series, and the first switch S1 and the second switch S2 are both normally open switches and are respectively in driving fit with the operating mechanism 12b and the test button 13 g; when the first handle 11b is toggled to drive the operating mechanism 12b to act so as to close the residual current circuit breaker 1, the operating mechanism 12b drives the first switch S1 to be closed; pressing the test button 13g actuates the second switch S2 to close. The utility model discloses residual current circuit breaker device, its electric leakage test circuit only after residual current circuit breaker 1 combined floodgate, just can switch on when pressing test button 13g again, avoids the mistake to touch test button 13g, causes the condition emergence that residual current circuit breaker device damaged.

Preferably, as shown in fig. 3-6 and 21, the switching circuit includes a first conductive member 10g, a second conductive member 11g and a third conductive member 12g, the second conductive member 11g is in driving fit with the test button 13g, the second conductive member 11g and the first conductive member 10 form a second switch S2, the third conductive member 12g is in driving fit with the operating mechanism 12b, and the third conductive member 12g and the first conductive member 10g form a first switch S1. Further, as shown in fig. 3, 5, and 6, the second conductive member 11g and the third conductive member 12g are both torsion springs, one end of the second conductive member 11g and one end of the third conductive member 12g are respectively fixed, and the other end of the second conductive member 11g and the other end of the third conductive member 12g are respectively in driving fit with the test button 13g and the operating mechanism 12 b. The switching circuit is composed of a first conductive piece 10g, a second conductive piece 11g and a third conductive piece 12g, and is simple in structure, small in occupied space and low in cost. It should be noted that the switching circuit is not limited to the above implementation, and the first switch S1 and the second switch S2 may be implemented by micro switches, but the space occupied is relatively large and the cost is relatively high.

The electrical leakage breaker apparatus of the present invention will be further described with reference to the drawings and the specific embodiments.

As shown in fig. 1 to 13, the leakage breaker apparatus of the present invention is a first embodiment.

As shown in fig. 1 and 10-13, the electrical leakage breaker apparatus of the present invention comprises an electrical leakage breaker 1 and a function expansion base 2 of an integrated structure, and a function expansion module 3 inserted and matched with the function expansion base 2; the function extension base 2 is arranged on one side of the residual current circuit breaker 1, the function extension base 2 comprises a module slot 20, and the function extension module 3 is inserted into the module slot 20. Of course, the residual current circuit breaker 1 and the function extension base 2 may be detachably spliced together.

It should be noted that, the leakage circuit breaker 1 generally has a short-circuit protection mechanism (short-circuit protection function), an overload protection mechanism (overload protection function), a leakage protection mechanism (leakage protection function), a overvoltage/undervoltage protection mechanism (overvoltage/undervoltage protection function) and a leakage self-checking mechanism (leakage self-checking function) as a common electrical switch device, and the above listed mechanisms (functions) have the increase and decrease conditions according to the difference of the product types of the leakage circuit breaker 1.

Preferably, the function extension module 3 is a surge protection module, a shunt trip module 3a, an automatic reclosing module 3b, an auxiliary contact module 3c or a fault alarm indication module 3 d. Function extension module 3 can be above-mentioned arbitrary one kind module, but is not limited to above-mentioned module scope only, can also expand according to user's actual need, thereby makes the utility model discloses the application under the electric leakage circuit breaker device has satisfied different scenes and different demands.

Preferably, the function expansion base 2 includes an elastic clip-type conductive member, and the function expansion module 3 includes a module plug, and the module plug is in plug-in fit with the elastic clip-type conductive member.

Preferably, as shown in fig. 1, 10-13, the residual current circuit breaker device further comprises a guide structure for guiding and restraining the function expansion module 3 during the insertion of the function expansion module 3 into the module slot 20. Further, as shown in fig. 1 and 10-13, the guiding structure includes a guiding rib and a guiding groove, which are used in cooperation, one of which is disposed on the function expansion base 2, and the other is disposed on the function expansion module 3. Specifically, as shown in fig. 1 and 10-13, the function extension base 2 includes a guide groove disposed on a side wall of the module slot 20, and the function extension module 3 includes a guide rib, the guide groove and the guide rib cooperate to guide and limit a path of the function extension module 3 inserted into the function extension base 2, so that the function extension module 3 is inserted into the module slot 20 more smoothly, and the function extension module 3 is connected with the function extension base 2 more accurately (for example, it is easier and more accurate to align a power terminal of the function extension module 3 with a power terminal on the function extension base 2).

Preferably, as shown in fig. 10 to 13, the function expansion module 3 is inserted into the module slot 20 from a first direction or inserted into the module slot 20 from a second direction, the first direction and the second direction being perpendicular to each other.

Preferably, as shown in fig. 10-11, the module slot 20 is a u-shaped slot, and the function-expanding module 3 is inserted into the module slot 20 from the open end of the u-shaped structure or from the side of the u-shaped structure opposite to the earth-leakage breaker 1. Specifically, as shown in fig. 10 and 11, the module slot 20 is a u-shaped slot with an open end facing upward, into which the function expansion module 3 is inserted from above the module slot 20, or into which the function expansion module 3 is inserted from the right side of the module slot 20.

Preferably, as shown in fig. 12-13, the module slot 20 is a right-angle slot, and the first direction is opposite to one side wall of the right-angle slot, and the second direction is opposite to the other side wall of the right-angle slot. Specifically, as shown in fig. 12 and 13, the module slot 20 is a right-angle slot, the first direction is opposite to the left side wall of the module slot 20, and the second direction is opposite to the bottom wall of the module slot 20, that is, the function expansion module 3 is horizontally inserted into the module slot 20 from the right side, or vertically inserted into the module slot 20 from the top.

Preferably, the residual current circuit breaker comprises at least one phase circuit and an N-pole circuit, and the phase circuit and the N-pole circuit are synchronously closed/opened.

As shown in fig. 2-5 and 7-9, the electrical leakage breaker 1 is preferably a two-phase breaker, and includes an L-pole circuit and an N-pole circuit that are arranged side by side at an interval, where the L-pole circuit is a phase-pole circuit; the function expansion base 2 comprises a PE pole circuit, an L pole circuit is respectively positioned at two sides of the N pole circuit, and the PE pole circuit is matched with the function expansion module 3. The PE pole circuit is arranged on one side of the N pole circuit, and is favorable for electric connection of the PE pole circuit with the electric leakage test circuit and the electric leakage breaker.

Preferably, as shown in fig. 2-3 and 7-9, the electrical leakage breaker 1 includes a breaker casing 1a, the breaker casing 1a includes a first partition plate 1c disposed at the middle thereof, the first partition plate 1c divides the breaker casing 1a into a first space and a second space, an L-pole circuit and an N-pole circuit are both disposed in the breaker casing 1a and respectively located at two sides of the first partition plate 1c, the L-pole circuit is located in the first space, and the N-pole circuit is located in the second space; the function extension base 2 comprises a second partition plate 2a matched with the shell 1a of the circuit breaker, the N-pole circuit is positioned between the first partition plate 1c and the second partition plate 2a, and the PE-pole circuit and the N-pole circuit are respectively arranged on two sides of the second partition plate 2 a.

Preferably, as shown in fig. 3 and 5, the N-pole circuit includes an N-pole moving contact 110d and an N-pole stationary contact 111d which are used in cooperation; as shown in fig. 3, 5, and 9, the circuit breaker housing 1a includes an N-pole arc-extinguishing chamber, one end of the N-pole moving contact 110d is inserted into the N-pole arc-extinguishing chamber from one end thereof, and is closed/opened with the N-pole stationary contact 111d in the N-pole arc-extinguishing chamber, the other end of the N-pole arc-extinguishing chamber is provided with an arc-cutting sidewall 212c, the arc-cutting sidewall 212c is provided with a plurality of arc-extinguishing holes arranged at intervals, and the circuit breaker housing 1a further includes an exhaust hole 214c relatively matched with the arc-cutting sidewall 212 c. Further, as shown in fig. 3, the first separator 1c includes a first upper rib 213c and a first side rib 211 c; as shown in fig. 9, the second partition board 2a includes a second upper blocking rib 23a and a second side blocking rib 21a, the second upper blocking rib 23a cooperates with the first upper blocking rib 213c to form an upper side wall of an arc extinguishing chamber of the N-pole arc extinguishing chamber, one end of the N-pole moving contact 110d penetrates the upper side wall of the arc extinguishing chamber, so that the arc gas in the N-pole arc extinguishing chamber can be prevented from being ejected out toward a side of a portion of the N-pole moving contact 110d exposing the N-pole arc extinguishing chamber, the second side blocking rib 21a cooperates with the first side blocking rib 211c to form a side wall of the N-pole arc extinguishing chamber, the side wall of the circuit breaker housing 1a forms another side wall of the N-pole arc extinguishing chamber, and the arc cutting side wall 212c forms a bottom wall of the N-pole arc extinguishing chamber.

Preferably, as shown in fig. 2, a plurality of lap convex ribs 10a arranged side by side at intervals are arranged on one side of the first partition plate 1c facing the L-pole circuit, and the lead of the L-pole circuit is overlapped on the lap convex ribs 10a, so that the lead of the L-pole circuit is closer to the side wall of the earth leakage circuit breaker 1, and the heat dissipation of the earth leakage circuit breaker 1 is facilitated.

Preferably, as shown in fig. 4, 7 and 8, the PE pole circuit includes a base power supply terminal 20b, and the base power supply terminal 20b includes a grounding conductive member 200b, an L pole conductive member 201b connected to the L pole circuit, and an N pole conductive member 202b connected to the N pole circuit. Further, the grounding conductive member 200b, the L-pole conductive member 201b, and the N-pole conductive member 202b are all elastic clip-type conductive members.

Preferably, as shown in fig. 4, 7 and 8, the PE pole circuit further includes a switching element 23 b; the electric leakage circuit breaker 1 further comprises an electric leakage test circuit, the electric leakage test circuit comprises a test resistor R and a switch circuit, the test resistor R is connected between the L pole circuit and the N pole circuit in series, and the switch piece 23b is connected with the switch circuit in parallel. Further, the test circuit R and the switch circuit are connected in series to the line outlet end of the L-pole circuit and the line inlet end of the N-pole circuit (or the test resistor R and the switch circuit are connected in series to the line inlet end of the L-pole circuit and the line outlet end of the N-pole circuit); the switch member 23b is a microswitch.

Preferably, as shown in fig. 7-8, the PE pole circuit further includes a base circuit board 24b, and the switch element 23b is connected to the base circuit board 24 b. Further, as shown in fig. 7 to 8, the switch piece 23b and the base wiring board 24b are stacked on the bottom of the module slot 20.

Preferably, when the function expansion module 3 is a surge protection module or a shunt tripping module 3a, the function expansion module is in driving fit with the switch piece 23 b. Further, function extension module 3 is surge protection module, and when surge current appears in the return circuit, surge module mechanism can move (general surge protection module adopts low temperature soldering tin gas discharge tube and piezo-resistor, and low temperature soldering tin department can be blown when overcurrent appears, drives corresponding mechanism action after blowing out), promotes switch 23b switch-on through surge module mechanism, makes earth leakage circuit breaker 1 trip to through the extremely ground connection of PE electrically conductive piece 200b with surge current connected to ground.

Preferably, as shown in fig. 8, the PE pole circuit further includes a base signal component 25b, the function extension module 3 is a shunt trip module 3a or an automatic reclosing module 3b, and is matched with the base signal component 25b, and an external control signal is input to the function extension module 3 through the base signal component 25 b.

Preferably, as shown in fig. 1 and 10-11, when the module slot 20 is a u-shaped slot, the base power terminal 20b, the switch element 23b and the base circuit board 24b are disposed at the bottom of the module slot 20, and the base signal element 25b is disposed at the side wall of the module slot 20.

Preferably, as shown in fig. 12-13, when the module slot 20 is a right-angle slot, the base power terminals 20b, the switch elements 23b and the base circuit board 24b are disposed at one side wall of the module slot 20, and the base signal components 25b are disposed at the other side wall of the module slot 20.

It should be noted that the layout of the PE pole circuit in the function expansion base 2 is not limited to the two types, and can be adjusted according to actual needs, for example, when the module slot 20 is a u-shaped slot, the base power terminal 20b, the switch element 23b, the base circuit board 24b and the base signal terminal 25b are all disposed at the bottom of the module slot 20; for example, when the module slot 20 is a right-angle slot, the base power terminals 20b, the switch element 23b, the base circuit board 24b and the base signal terminals 25b are all disposed at one side wall of the module slot 20, which is not illustrated.

As shown in fig. 2, an embodiment of the L pole circuit is shown: the L pole circuit comprises a first handle 11b, an operating mechanism 12b, a moving contact 130b and a fixed contact 131b, wherein the moving contact 130b and the fixed contact 131b are used in cooperation, the first handle 11b is pivotally arranged on the first partition board 1c and is in driving connection with the operating handle 12b, and the operating handle 12b is in driving connection with the moving contact 130 b. Further, the operating mechanism 12b includes a first connecting rod 120b, a rotating plate 121b, a locking member 122b, and a trip member 123b, the first handle 11b is drivingly connected to the locking member 122b through the first connecting rod 120b, the rotating plate 121b is pivotally disposed on the first partition board 1c, the locking member 122b and the trip member 123b are pivotally disposed on the rotating plate 121b and are in locking engagement, and the rotating plate 121b is drivingly connected to the movable contact 130 b.

Preferably, the L pole circuit further comprises a short circuit protection mechanism 14b, an overload protection mechanism 15b and an arc extinguishing chamber 16 b.

It should be noted that when the residual current circuit breaker 1 includes a plurality of phase circuits, each phase circuit may include an independent operating mechanism, or all phase circuits may share a set of operating mechanisms.

As shown in fig. 3, an embodiment of the N pole circuit is: the N-pole circuit comprises an N-pole moving contact 110d, an N-pole fixed contact 111d and a driving rod 10d which are matched; the N-pole moving contact 110d is rotatably disposed on the first partition board 1c, the rotating board 121b of the operating mechanism 12b is drivingly connected to one end of the driving rod 110d, and the other end of the driving rod 110d is drivingly connected to the N-pole moving contact 110 d.

Preferably, as shown in fig. 3, the circuit breaker further includes a residual current detection coil 10e and a residual current release 11e, both of which are located on the same side of the first partition plate 1c as the N-pole circuit, the residual current release 11e is in driving fit with the rotating plate 121b of the operating mechanism 12b through a driving lever pivotally disposed on the first partition plate 1c, and drives the rotating plate 121b to rotate and release the locking fit with the locking piece 120b, so that the residual current circuit breaker 1 is opened.

Preferably, as shown in fig. 8 and 15, is one embodiment of the base signal assembly 25 b: the base signal assembly 25b includes a base signal circuit board 250b, a communication port 251b and a base signal terminal 252b, wherein the communication port 251b and the base signal terminal 252b are respectively located at two sides of the base signal circuit board 250 b. Further, as shown in fig. 8 and 15, the base signal terminal 252b is a spring plate having a V-shaped structure.

As shown in fig. 1, 4, 7-8, 10-11, 14-15, which is a second embodiment of the residual current circuit breaker device of the present invention.

In the residual current circuit breaker device of the embodiment, the function extension module 3 is a shunt tripping module 3a, and the shunt tripping module 3a includes a shunt release 36 a; the function expanding base 2 comprises a switch piece 23b which is in driving fit with the shunt release 36 a; the leakage circuit breaker 1 comprises a leakage test circuit, the leakage test circuit comprises a test resistor R, the switch piece 23b and the test resistor R are connected in series between a phase circuit and an N-pole circuit of the leakage circuit breaker 1, and the shunt tripping module 3a receives an external tripping signal to enable the shunt tripping device 36a to act, drive the switch piece 23b to be conducted, and enable the leakage circuit breaker 1 to be switched off. The shunt release 36a may be an electromagnetic release.

Preferably, the electrical leakage breaker 1 is a two-phase breaker, and includes an L-pole circuit and an N-pole circuit, and the L-pole circuit is a phase-pole circuit.

Preferably, as shown in fig. 14 to 15, the shunt trip module 3a includes a first power terminal 31a and a first signal terminal 34 a; as shown in fig. 4, 7-8 and 15, the function expanding base 2 comprises a base power terminal 20b and a base signal component 25b, the base signal component 25b comprises a base signal terminal 252b, the first power terminal 31a is plugged and matched with the base power terminal 20b, and the first signal terminal 34a is in contact and matched with the base signal terminal 252 b.

Preferably, as shown in fig. 14-15, the first power terminal 31a is a plug-type terminal, and as shown in fig. 7-8, the base power terminal 20b is a resilient clip-type conductive member; as shown in fig. 8 and 15, the base signal terminal 252b is a spring-loaded terminal, and as shown in fig. 15, the first signal terminal 34a is a contact-plate-type terminal, and is elastically contact-fitted with the base signal terminal 252 b. Further, as shown in fig. 14 to 15, the first power terminal 31a includes a first L-pole plug, a first N-pole plug and a first grounding plug, and as shown in fig. 7 to 8, the base power terminal 20b includes a grounding conductive member 200b, an L-pole conductive member 201b and an N-pole conductive member 202b, which are respectively mated with the first grounding plug, the first L-pole plug and the first N-pole plug.

Preferably, as shown in fig. 4 and 7-8, the switch member 23b is a normally open microswitch.

Preferably, as shown in fig. 14 and 15, the shunt release 3a further includes a first module housing 30a, a first module mounting plate 37a and a first module circuit board 38a, the first module mounting plate 37a is fixedly disposed in the first module housing 30a, the first module circuit board 38a and the shunt release 36a are respectively disposed on the first module mounting plate 37a, and the first power terminal 31a, the first signal terminal 34a and the shunt release 36a are respectively connected to the first module circuit board 38 a. Further, as shown in fig. 14 and 15, the first power supply terminal 31a protrudes at one end on the lower side of the shunt release 3a, and the first signal terminal 34a is located at the left side wall of the first module case 30 a.

Preferably, as shown in fig. 1 and 10-11, the module slot 20 has a u-shaped slot, the base power terminal 20b and the switch element 23b are respectively disposed at the bottom of the u-shaped slot 20, and the base signal terminal 25b is disposed at the sidewall of the u-shaped slot 20.

Preferably, as shown in fig. 14, the first module housing 30a includes first guide ribs 300 a; as shown in fig. 1 and 10-11, the side wall of the module slot 20 is provided with a guide groove.

As shown in fig. 1, 4, 7-8, 10-11, 16-17, which is a third embodiment of the electrical leakage breaker apparatus of the present invention.

In the electric leakage circuit breaker device of the embodiment, the function extension module is a 3-position automatic reclosing module 3b, the automatic reclosing module 3b comprises a second module shell 30b, a motor 32b, a gear set, a driving connecting rod 34b and a second handle 31b, the motor 32b, the gear set, the driving connecting rod 34b and the second handle 31b are respectively arranged in the second module shell 30b, the second handle 31b is pivotally arranged on the second module shell 30b, and the gear set is in driving fit with the second handle 31b through the driving connecting rod 34 b; the residual current circuit breaker 1 comprises a first handle 11b, and a second handle 31b is connected with the first handle 11b in a driving mode and acts synchronously.

Preferably, the automatic reclosing module 3b includes a second signal terminal, and the second signal terminal is in contact fit with the base signal terminal 252b of the function extension base 2, and the external opening/closing signal is input to the automatic reclosing 3b through the base signal terminal 252b and the second signal terminal.

Preferably, as shown in fig. 16 and 17, the second handle 31b includes a second rotating portion 311b pivotally disposed on the second module housing 30b and a second toggle portion 310b disposed on the peripheral side of the second rotating portion 311b, one end of the second toggle portion 310b is connected to the second rotating portion 311b, and the other end is detachably and drivingly connected to and synchronously operated with the first handle 11 b. Further, as shown in fig. 16 and 17, the second handle 31b further includes a second driven portion 312b disposed on the peripheral side of the second rotating portion 311 b; the gear set of the automatic reclosing module 3b includes a driving gear 35b pivotally disposed on the second module housing 30b, and one end of the driving link 34b is drivingly connected to the driving gear 35b, and the other end is drivingly engaged with the second driven portion 312 b.

Preferably, one end of the second toggle portion 310b is connected to the second rotating portion 311b, and the other end is provided with a second slot, and the first handle 11b is clamped in the second slot.

Preferably, the automatic reclosing module 3b further includes a guide limiting groove 300b disposed on the second module housing 30b, one end of the driving link 34b is drivingly connected to the driving gear 35b, and the other end thereof is movably inserted into the guide limiting groove 300b to be drivingly engaged with the second driven portion 312 b. Further, the guide limiting groove 300b is an arc-shaped groove.

Preferably, the trip catch 123b of the operating mechanism 12b is in driving fit with the driving gear 35 b; the driving gear 35b rotates in a third direction, and the residual current circuit breaker 1 is switched on by sequentially driving the driving connecting rod 34b, the second handle 31b and the first handle 11b which are matched; the driving gear 35b rotates in the fourth direction to drive the tripping part 123b to rotate and release the locking fit with the locking part 122b, so that the residual current circuit breaker 1 is switched off; the third direction and the fourth direction are opposite (i.e., opposite to each other). Further, the jump buckle 123b comprises a jump buckle driven column, the jump buckle driven column is in driving fit with the driving gear 35b, and the driving gear 35b rotates and drives the jump buckle to rotate through the jump buckle driven column. As shown in fig. 16, a corresponding transmission member is disposed below the driving gear 35b, a corresponding transmission hole is disposed on the second module housing 30b, and the driving gear 35b can drive the snap-fastener 123b through the transmission member.

Preferably, as shown in fig. 16, the gear set comprises a worm 33b, a first intermediate gear 37b, a second intermediate gear 36b and a driving gear 35b which are meshed in sequence, and the worm 33b is in driving connection with the motor 32 b.

Preferably, the driving link 34b is a U-shaped link.

It should be noted that, the structure and principle of the recloser module 3b, the motor 32b and the gear set thereof driving the second handle 31b to rotate, and the structure and principle of the driving gear 35 driving the trip 123b to rotate and release the latch fitting with the latch 122b are the prior art in the field, and detailed description thereof is omitted; one of the main improvement points of the electrical leakage breaker device of the present embodiment is: the connection mode of the second handle 31b and the first handle 11b, and the matching mode of the automatic reclosing module 3b and the function expanding base 2.

Preferably, as shown in fig. 16 and 17, the automatic reclosing module 3b further includes a second power terminal 38b, which is plugged into and matched with the base power terminal 20b of the function expanding base 2. Further, the residual current circuit breaker 1 is preferably a two-phase circuit breaker; the second power terminal 38b includes a second L-pole plug and a second N-pole plug, which are respectively mated with the L-pole conductive element 201b and the N-pole conductive element 202b of the base power terminal 20 b.

Preferably, as shown in fig. 17, the second module case 30b includes second guide ribs; as shown in fig. 1 and 10-11, the side wall of the module slot 20 is provided with a guide groove, and the second guide rib is used in cooperation with the guide groove.

Preferably, as shown in fig. 1 and 10-11, the module slot 20 is a u-shaped slot, and the base power terminal 20b is disposed at the bottom of the u-shaped structure of the module slot 20; as shown in fig. 17, one end of the second power supply terminal 38b protrudes below the recloser module 3 b.

As shown in fig. 1, 4, 7-8, 10-11 and 20, is a fourth embodiment of the electrical leakage breaker apparatus of the present invention.

In the residual current circuit breaker device of the embodiment, the function extension module 3 is a fault alarm indication module 3d, and the fault alarm indication module 3d includes a fourth module housing 30d, an alarm circuit board 34d, an audible alarm element 37d, a luminous alarm element 32d and a fourth power terminal 36d, which are respectively arranged in the fourth module housing 30 d; the sound alarm element 37d and the light-emitting alarm element 32d are respectively arranged on the alarm circuit board 34d, and the fourth power terminal 36d is connected with the alarm circuit board 34d and is in plug-in fit with the function expansion base 2. Further, the malfunction alarm indication module 3d further includes a fourth mounting plate 38d provided in the fourth module case 30d, and the alarm circuit board 34d and the fourth power supply terminal 36d are respectively provided on the fourth mounting plate 38 d.

Preferably, as shown in fig. 20, the fourth modular housing 30d includes a light-transmissive structure 33d in opposed engagement with the light-emitting alarm element 32 d. Further, the light-transmitting structure 33d is a transparent portion of the fourth module housing 30 d.

Preferably, the sound alarm device 37d is a buzzer, and the light alarm device 32d is a light emitting diode.

Preferably, the residual current circuit breaker is a two-phase circuit breaker; as shown in fig. 20, the fourth power supply terminal 36d includes a fourth L-pole plug 361d, a fourth N-pole plug 362d and a fourth grounding plug 360d, which are respectively mated with the L-pole conductive piece 201b, the N-pole conductive piece 202b and the grounding conductive piece 200b of the base power supply terminal 20 b.

Preferably, as shown in fig. 20, the fourth module housing 30d includes a fourth guiding rib, as shown in fig. 1 and 10-11, a guiding groove is formed on a side wall of the module slot 20, and the fourth guiding rib is used in cooperation with the guiding groove.

Preferably, as shown in fig. 1 and 10-11, the module slot 20 is a u-shaped slot, and the base power terminal 20b is disposed at the bottom of the u-shaped structure of the module slot 20; as shown in fig. 20, one end of the fourth power terminal 36d protrudes below the malfunction alarm indication module 3 d.

As shown in fig. 1, 4, 7-8, 10-11, 18-19, is a fifth embodiment of the electrical leakage breaker apparatus of the present invention.

In the electrical leakage breaker apparatus of this embodiment, the function extension module 3 is an auxiliary contact module 3c, the auxiliary contact module 3c includes a third module housing 30c, a third handle 31c and at least one auxiliary contact group disposed in the third module housing 30c, the third handle 31c is pivotally disposed on the third module housing 30c, each auxiliary contact group includes an auxiliary moving contact 320c and an auxiliary stationary contact 321c, and the auxiliary moving contact 320c is drivingly connected to the third handle 31 c; the residual current circuit breaker 1 comprises a first handle 11b which is connected with a third handle 31c in a driving way and synchronously acts.

Preferably, as shown in fig. 18, each of the auxiliary contact groups includes an auxiliary moving contact 320c and two auxiliary stationary contacts 321c respectively disposed at two sides of the auxiliary moving contact 320c, and one of the two auxiliary stationary contacts 321c is a normally closed stationary contact and the other is a normally open stationary contact. Further, the auxiliary contact module 3c further includes an auxiliary terminal group used in one-to-one cooperation with the auxiliary contact group, and each auxiliary terminal group includes two connection terminals electrically connected to the two auxiliary stationary contacts 321c of one auxiliary contact group.

Preferably, as shown in fig. 18 and 19, the third handle 31c includes a third rotating portion 311c pivotally disposed on the third module housing 30c, a third toggle portion 310c drivingly connected to the first handle 11b, and a third mounting portion 312c drivingly connected to the movable contact 320 c; the third toggle portion 310c and the third mounting portion 312c are respectively disposed on the peripheral side of the third rotating portion 311 c. Further, as shown in fig. 19, one end of the third toggle portion 310c is connected to the third rotating portion 311c, the other end is provided with a third engaging groove 3100c, and the first handle 11b is engaged in the third engaging groove 3100 c.

Preferably, as shown in fig. 18, the auxiliary moving contact 320c includes an auxiliary moving contact bridge and an auxiliary moving contact, the auxiliary moving contact bridge includes an auxiliary moving contact bridge first portion and an auxiliary moving contact bridge second portion, one end of the auxiliary moving contact bridge second portion is connected with the auxiliary moving contact bridge first portion in a bending manner, and the other end is provided with the auxiliary moving contact; the third mounting portion 312c includes a contact clamping groove 3120c, a portion of the third mounting portion 312c located on one side of the contact clamping groove 3120c forms a contact bridge limiting table, the auxiliary moving contact second portion is clamped in the contact clamping groove 3120c, and the auxiliary moving contact first portion and the auxiliary moving contact second portion are respectively located on two sides of the contact bridge limiting table. Further, the joint of the first part of the auxiliary moving contact and the second part of the auxiliary moving contact bridge is in limit fit with the third rotating part 311 c. Preferably, the auxiliary moving contact 320c is integrally formed by bending a sheet-shaped elastic metal sheet into a V-shaped structure, two side walls of the V-shaped structure are respectively a first portion of the auxiliary moving contact bridge and a second portion of the auxiliary moving contact bridge, and the first portion of the auxiliary moving contact bridge is shorter than the second portion of the auxiliary moving contact bridge.

Preferably, as shown in fig. 18, the third module housing 30c includes a third guiding rib, as shown in fig. 1 and 10-11, a guiding groove is provided on a side wall of the module slot 20, and the third guiding rib is used in cooperation with the guiding groove.

Preferably, as shown in fig. 1 and 10-11, the module slot 20 is a u-shaped slot.

As shown in fig. 3 to 6 and 21, the sixth embodiment of the electrical leakage breaker device of the present invention is shown.

In the electrical leakage breaker device of the present embodiment, the electrical leakage breaker 1 further includes a test button 13g, a switch circuit of the electrical leakage test circuit includes a first switch S1 and a second switch S2, and both the first switch S1 and the second switch S2 are normally open switches respectively in driving cooperation with the operating mechanism 12b and the test button 13 g; when the first handle 11b is fluctuated to drive the operating mechanism 12b to act so as to close the residual current circuit breaker 1, the operating mechanism 12b drives the first switch S1 to be closed; pressing the test button 13g actuates the second switch S2 to close.

Preferably, as shown in fig. 3 to 6, the switching circuit includes a first conductive member 10g, a second conductive member 11g and a third conductive member 12g, the second conductive member 11g is in driving fit with the test button 13g, the second conductive member 11g and the first conductive member 10g constitute a second switch S2, the third conductive member 12g is in driving fit with the operating mechanism 12b, and the third conductive member 12g and the first conductive member 10g constitute a first switch S1. Further, as shown in fig. 3 to 6, the second conductive member 11g and the third conductive member 12g are both torsion springs, one end of the second conductive member 11g and one end of the third conductive member 12g are respectively fixed, and the other end of the second conductive member 11g and the other end of the third conductive member 12g are respectively in driving fit with the test button 13g and the operating mechanism 12 b. Further, the second conductive member 11g and the third conductive member 12g are respectively sleeved on the spring fixing shaft of the first partition plate 1c, and the first conductive member 10g is fixed on the first partition plate 1 c.

Preferably, as shown in fig. 3-6 and 21, one end of the third conductive member 12g is electrically connected to the incoming line end of the N-pole circuit, and the other end is in driving fit with the operating mechanism 12 b; the residual current circuit breaker 1 further comprises a circuit breaker circuit board 12e, one end of the second conductive piece 11g is connected with the circuit breaker circuit board 12e, and the other end of the second conductive piece is in driving fit with the test button 13 g. Further, the circuit breaker circuit board 12e and the N-pole circuit are located on the same side of the first partition board 1c of the circuit breaker housing 1 a.

Preferably, as shown in fig. 3 and 5, the operating mechanism 12b is in driving fit with the third conductive member 12g through the driving link 10d of the N-pole circuit. Further, as shown in fig. 3, the third conductive element 12g is disposed on one side of the driving link 10d, and the driven arm 123g of the V-shaped third conductive element of the third conductive element 12g is in driving fit with the driving link 10 d.

Preferably, as shown in fig. 6, the first conductive member 10g is a conductive plate having an L-shaped structure, and includes a first conductive member vertical portion 100g and a first conductive member horizontal portion 101g which are matched with the third conductive member 12 g; as shown in fig. 6, the second conductive member 11g is a torsion spring, and includes a second conductive member main body 110g, and a second conductive member horizontal arm 111g and a second conductive member vertical arm 112g respectively connected to the second conductive member main body 110g, the second conductive member horizontal arm 111g is matched with the first conductive member horizontal portion 101g, the second conductive member vertical arm 112g is an L-shaped structure, and includes a vertical arm vertical portion 1120g and a vertical arm horizontal portion 1121g, two ends of the vertical arm vertical portion 1120g are respectively connected to the second conductive member main body 110g and the vertical arm horizontal portion 1121g, and a free end of the vertical arm horizontal portion 1121g is connected to the circuit breaker 12 e; as shown in fig. 6, the third conductive device 12g includes a third conductive device main body 120b, and a third conductive device connecting arm 121g and a third conductive device driven arm 123g respectively connected to the third conductive device main body 120g, a free end of the third conductive device connecting arm 121g is connected to a line inlet end of the N-pole circuit, the third conductive device driven arm 123g has a V-shaped structure, one end of the third conductive device connecting arm is connected to the third conductive device main body 120g, the other end of the third conductive device connecting arm is matched with the first conductive device vertical portion 100g, and a bent portion of the V-shaped structure of the third conductive device driven arm 123g is matched with the driving link 10d in a driving manner. Further, as shown in fig. 6, the third conductive driven arm 123g includes a first driven arm part 1231g, a second driven arm part 1232g, and a third driven arm part 1233g, which are sequentially connected, one end of the first driven arm part 1231g is connected to the third conductive member main body 120g, the first driven arm part 1231g and the second driven arm part 1232g are bent and connected to form a V-shaped structure, and the third driven arm part 1233g is parallel to the vertical first conductive member part 100g when contacting the vertical first conductive member part 100 g.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims (16)

1. An electric leakage circuit breaker device is characterized by comprising an electric leakage circuit breaker (1), a function expansion base (2) and a function expansion module (3) which is in plug-in fit with the function expansion base (2); the function extension base (2) is arranged on one side of the residual current circuit breaker (1), the function extension base (2) comprises a module slot (20), and the function extension module (3) is inserted into the module slot (20).

2. An earth leakage breaker device according to claim 1, characterized in that: the residual current circuit breaker device further comprises a guide structure for guiding and limiting the function expansion module (3) in the process that the function expansion module (3) is inserted into the module slot (20).

3. An earth leakage breaker device according to claim 2, characterized in that: the guide structure comprises guide ribs and guide grooves which are matched with each other, wherein one guide rib is arranged on the function expansion base (2), and the other guide rib is arranged on the function expansion module (3).

4. An earth leakage breaker device according to claim 1, characterized in that: the function expansion base (2) comprises an elastic clamp type conductive piece, the function expansion module (3) comprises a module plug, and the module plug is matched with the elastic clamp type conductive piece in a splicing mode.

5. An earth leakage breaker device according to any of the claims 1-4, characterized in that: the function expansion module (3) is inserted into the module slot (20) from a first direction or inserted into the module slot (20) from a second direction, and the first direction and the second direction are perpendicular to each other.

6. An earth leakage breaker device according to claim 5, characterized in that the device: the module slot (20) is a U-shaped slot, and the function expansion module (3) is inserted into the module slot (20) from the open end of the U-shaped structure or from the side of the U-shaped structure opposite to the electric leakage circuit breaker (1).

7. An earth leakage breaker apparatus as claimed in claim 5, characterized in that: the module slot (20) is a right-angle slot, the first direction is opposite to one side wall of the right-angle slot, and the second direction is opposite to the other side wall of the right-angle slot.

8. An earth leakage breaker device according to claim 1, characterized in that: the function expansion module (3) is a surge protection module, a shunt tripping module (3a), an automatic reclosing module (3b), an auxiliary contact module (3c) or a fault alarm indication module (3 d).

9. An earth leakage breaker device according to claim 1, characterized in that: the electric leakage circuit breaker (1) is a two-phase circuit breaker and comprises an L pole circuit and an N pole circuit which are arranged side by side at intervals, the function extension base (2) comprises a PE pole circuit, the PE pole circuit and the L pole circuit are respectively positioned on two sides of the N pole circuit, and the PE pole circuit is matched with the function extension module (3).

10. An earth leakage breaker device according to claim 9, characterized in that: the electric leakage circuit breaker (1) comprises a circuit breaker shell (1a), the circuit breaker shell (1a) comprises a first partition plate (1c) arranged in the middle of the circuit breaker shell, the first partition plate (1c) divides the circuit breaker shell (1a) into a first space and a second space, an L-pole circuit and an N-pole circuit are respectively positioned on two sides of the first partition plate (1c), the L-pole circuit is positioned in the first space, and the N-pole circuit is positioned in the second space; the function extension base (2) comprises a second partition plate (2a) matched with the shell (1a) of the circuit breaker, the N-pole circuit is located between the first partition plate (1c) and the second partition plate (2a), and the PE-pole circuit and the N-pole circuit are respectively arranged on two sides of the second partition plate (2 a).

11. An earth leakage breaker apparatus as claimed in claim 10, characterized in that: the N-pole circuit comprises an N-pole moving contact (110d) and an N-pole static contact (111d) which are matched with each other, a circuit breaker shell (1a) comprises an N-pole arc extinguishing cavity, one end of the N-pole moving contact (110d) is inserted into the N-pole arc extinguishing cavity from one end of the N-pole arc extinguishing cavity, the N-pole arc extinguishing cavity and the N-pole static contact (111d) are closed/disconnected, an arc cutting side wall (212c) is arranged at the other end of the N-pole arc extinguishing cavity, a plurality of arc extinguishing holes which are arranged at intervals are formed in the arc cutting side wall (212c), and the circuit breaker shell (1a) further comprises an exhaust hole (214c) which is matched with the arc cutting side wall (212c) relatively.

12. An earth leakage breaker apparatus as claimed in claim 10, characterized in that: the side, facing the L pole circuit, of the first partition plate (1c) is provided with a plurality of lapping convex ribs (10a) which are arranged side by side at intervals, and a lead of the L pole circuit is lapped on the lapping convex ribs (10 a).

13. An earth leakage breaker device according to claim 9, characterized in that: the PE pole circuit comprises a base power supply terminal (20b), wherein the base power supply terminal (20b) comprises three elastic clamp-type conductive pieces, namely a grounding conductive piece (200b), an L pole conductive piece (201b) connected with the L pole circuit and an N pole conductive piece (202b) connected with the N pole circuit.

14. An earth leakage breaker device according to claim 13, characterized in that: the electric leakage circuit breaker (1) further comprises an electric leakage test circuit, the electric leakage test circuit comprises a test circuit R and a switch circuit, the test circuit R and the switch circuit are connected between the L pole circuit and the N pole circuit in series, the PE pole circuit further comprises a switch piece (23b), and the switch piece (23b) is connected with the switch circuit in parallel; the function expansion module (3) is a surge protection module or a shunt tripping module (3a), and the function expansion module (3) is in driving fit with the switch piece (23 b).

15. An earth leakage breaker device according to claim 13, characterized in that: the PE pole circuit further comprises a base signal component (25b), and an external control signal is input into the function extension module (3) through the base signal component (25 b); the function expansion module (3) is a shunt tripping module (3a) or an automatic reclosing module (3 b).

16. An earth leakage breaker device according to claim 1, characterized in that: the residual current circuit breaker (1) and the function expansion base (2) are of an integrated structure or a detachable split structure.

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