Leakage circuit breaker device

Abstract

The application relates to the field of low-voltage electrical apparatus, in particular to a residual current circuit breaker device which comprises a residual current circuit breaker, a function expansion base and a function expansion module in plug-in cooperation with the function expansion base; the function expansion base is arranged at one side of the residual current circuit breaker, the function expansion base comprises a module slot 20, and the function expansion module is arranged in the module slot; the residual current circuit breaker device is convenient in assembly and disassembly of the function expansion module.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of low-voltage electrical apparatus, in particular to a residual current circuit breaker device. BACKGROUND

[0002] Low-voltage circuit breaker, also known as automatic air switch or automatic air circuit breaker, can be used to distribute electric energy, protect lines and power supply equipment in case of overload or short-circuit fault, and can also be used for infrequent switching of lines and infrequent starting of motors. As an important product of low-voltage circuit breaker, residual current circuit breaker generally has functions of short-circuit protection, overload protection, residual current protection, over / under voltage protection, residual current self-checking, etc. If the user also needs functions such as surge protection, split-tripping, fault alarm, fault display, and auxiliary contact, the traditional implementation way is to re-connect an accessory with the functions in the distribution box, which has complex wiring and occupies a large space. SUMMARY

[0003] The present application aims to overcome the defects of the prior art and provide a residual current circuit breaker device with a function expansion module that is easy to assemble / dismount.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0005] A residual current circuit breaker device includes a residual current circuit breaker 1, a function expansion base 2, and a function expansion module 3 that is plugged into the function expansion base 2; the function expansion base 2 is arranged on one side of the residual current circuit breaker 1, and the function expansion base 2 includes a module slot 20, and the function expansion module 3 is inserted into the module slot 20.

[0006] Preferably, the residual current circuit breaker device further includes a guide structure for guiding and limiting the function expansion module 3 during the process of inserting the function expansion module 3 into the module slot 20.

[0007] Preferably, the guide structure includes a guide rib and a guide groove that are used in cooperation, one of which is arranged on the function expansion base 2, and the other is arranged on the function expansion module 3.

[0008] Preferably, the function expansion base 2 includes an elastic clip type conductive part, and the function expansion module 3 includes a module plug that is plugged into the elastic clip type conductive part.

[0009] Preferably, the function expansion module 3 is inserted into the module slot 20 from a first direction or from a second direction, and the first direction and the second direction are perpendicular to each other.

[0010] 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 opening end of the U-shaped structure or from the side of the U-shaped structure opposite to the residual current circuit breaker 1.

[0011] Preferably, 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 another side wall of the right-angle slot.

[0012] Preferably, the function expansion module 3 is a surge protection module, a split-trip module 3a, an automatic reclosing module 3b, an auxiliary contact module 3c, or a fault alarm indication module 3d.

[0013] Preferably, the residual current circuit breaker 1 is a two-phase circuit breaker, including an L-phase circuit and an N-phase circuit arranged side by side and spaced apart, and the function expansion base 2 includes a PE-phase circuit, the PE-phase circuit and the L-phase circuit are respectively located on two sides of the N-phase circuit, and the PE-phase circuit cooperates with the function expansion module 3.

[0014] Preferably, the residual current circuit breaker 1 includes a circuit breaker housing 1a, the circuit breaker housing 1a includes a first partition plate 1c arranged at a middle portion thereof, the first partition plate 1c divides the circuit breaker housing 1a into a first space and a second space, the L-phase circuit and the N-phase circuit are respectively located on two sides of the first partition plate 1c, the L-phase circuit is located in the first space, and the N-phase circuit is located in the second space; the function expansion base 2 includes a second partition plate 2a cooperating with the circuit breaker housing 1a, the N-phase circuit is located between the first partition plate 1c and the second partition plate 2a, and the PE-phase circuit and the N-phase circuit are respectively arranged on two sides of the second partition plate 2a.

[0015] Preferably, the N-phase circuit includes an N-phase movable contact 110d and an N-phase static contact 111d which are used cooperatively, the circuit breaker housing 1a includes an N-phase arc-extinguishing chamber, one end of the N-phase movable contact 110d is inserted into the N-phase arc-extinguishing chamber from one end of the N-phase arc-extinguishing chamber, and the N-phase movable contact 110d is closed / broken with the N-phase static contact 111d in the N-phase arc-extinguishing chamber, the other end of the N-phase arc-extinguishing chamber is provided with an arc-cutting side wall 212c, the arc-cutting side wall 212c is provided with a plurality of arc-extinguishing holes arranged side by side and spaced apart, and the circuit breaker housing 1a further includes an exhaust hole 214c cooperating with the arc-cutting side wall 212c.

[0016] Preferably, one side of the first partition plate 1c facing the L-phase circuit is provided with a plurality of wire-lapping protrusions 10a arranged side by side and spaced apart, and the wires of the L-phase circuit are arranged on the wire-lapping protrusions 10a.

[0017] Preferably, the PE-phase circuit includes a base power terminal 20b, the base power terminal 20b includes three elastic clamping conductive members, which are a grounding conductive member 200b, an L-phase conductive member 201b connected with the L-phase circuit, and an N-phase conductive member 202b connected with the N-phase circuit.

[0018] Preferably, the leakage circuit breaker 1 further comprises a leakage test circuit, the leakage test circuit comprising a test resistor R and a switch circuit connected in series between the L-pole circuit and the N-pole circuit, the PE-pole circuit further comprising a switch piece 23b connected in parallel with the switch circuit; the function expansion module 3 is a surge protection module or a split excitation tripping module 3a, the function expansion module 3 being driven in cooperation with the switch piece 23b.

[0019] Preferably, the PE-pole circuit further comprises a base signal assembly 25b, an external control signal being input to the function expansion module 3 through the base signal assembly 25b; the function expansion module 3 is a split excitation tripping module 3a or an automatic reclosing module 3b.

[0020] Preferably, the leakage circuit breaker 1 and the function expansion base 2 are of an integrated structure or a detachable split structure.

[0021] The leakage circuit breaker device of the present application has the function expansion base and the function expansion module plugged in cooperation, and the user can conveniently replace the function expansion module according to different use scenarios and function requirements.

[0022] In addition, the module slot can be provided in 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 different types (structure and function type) of function expansion modules. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a perspective structural schematic view of the leakage circuit breaker of the present application, at least showing the positional relationship between the leakage circuit breaker and the function expansion base;

[0024] Figure 2 is a structural schematic view of the leakage circuit breaker device of the present application, at least showing the structure of the L-pole circuit;

[0025] Figure 3 is a structural schematic view of the leakage circuit breaker device of the present application, at least showing the structure of the N-pole circuit and the leakage test circuit, the leakage circuit breaker being in the open state;

[0026] Figure 4 is a structural schematic view of the leakage circuit breaker device of the present application, at least showing the structure of the N-pole circuit and the base power terminal of the function expansion base;

[0027] Figure 5 is a structural schematic view of the leakage circuit breaker device of the present application, at least showing the structure of the N-pole circuit and the leakage test circuit, the leakage circuit breaker being in the closed state;

[0028] Figure 6 is a structural schematic view of the leakage test circuit of the present application;

[0029] Figure 7 is a structural schematic diagram of the function expansion base of the present application, which shows at least the base power supply terminal, the switch piece and the base circuit board;

[0030] Figure 8 is a structural schematic diagram of the function expansion base of the present application, which shows at least the base power supply terminal, the switch piece, the base circuit board and the base signal assembly;

[0031] Figure 9 is a structural schematic diagram of the second partition plate of the present application;

[0032] Figure 10 is a structural schematic diagram of the first matching mode of the function expansion module and the function expansion base of the present application;

[0033] Figure 11 is a structural schematic diagram of the second matching mode of the function expansion module and the function expansion base of the present application;

[0034] Figure 12 is a structural schematic diagram of the third matching mode of the function expansion module and the function expansion base of the present application;

[0035] Figure 13 is a structural schematic diagram of the fourth matching mode of the function expansion module and the function expansion base of the present application;

[0036] Figure 14 is a structural schematic diagram of the function expansion module and the function expansion base of the present application, which shows at least the structure of the first module cover;

[0037] Figure 15 is a structural schematic diagram of the function expansion module and the function expansion base of the present application, which shows at least the structure of the first module cover;

[0038] Figure 16 is a structural schematic diagram of the function expansion module and the function expansion base of the present application, which shows at least the structure of the first module cover;

[0039] Figure 17 is a structural schematic diagram of the function expansion module and the function expansion base of the present application, which shows at least the structure of the first module cover;

[0040] Figure 18 is a structural schematic diagram of the function expansion module and the function expansion base of the present application, which shows at least the structure of the first module cover;

[0041] Figure 19 is a structural schematic diagram of the function expansion module and the function expansion base of the present application, which shows at least the structure of the first module cover;

[0042] Figure 20 is a structural schematic diagram of the function expansion module and the function expansion base of the present application, which shows at least the structure of the first module cover;

[0043] Figure 21 is a structural schematic diagram of the function expansion module and the function expansion base of the present application, which shows at least the structure of the first module cover; DETAILED DESCRIPTION

[0044] The following is in conjunction with the appendix Figure 1 The embodiments given in section 21 further illustrate specific implementations of the residual current circuit breaker device of the present invention. The residual current circuit breaker of the present invention is not limited to the descriptions of the following embodiments.

[0045] like Figure 1 , 10 As shown in Figure 13, the residual current circuit breaker device of the present invention includes a residual current circuit breaker 1, a function expansion base 2, and a function expansion module 3 that is plugged into and cooperates with the function expansion base 2. Furthermore, the residual current circuit breaker 1 and the function expansion base 2 are used together, and the residual current circuit breaker 1 and the function expansion base 2 are either an integral structure or a detachable separate structure.

[0046] Preferred, such as Figure 1 , 10 As shown in Figure 13, the functional expansion base 2 is disposed on one side of the residual current circuit breaker 1. The functional expansion base 2 includes a module slot 20, and the functional expansion module 30 is inserted into the module slot 20. Further, as... Figure 1 , 10 As shown in Figure 13, the residual current circuit breaker device also includes a guide structure for guiding and limiting the function expansion module 3 during its insertion into the module slot 20. Further, as... Figure 1 , 10 As shown in Figure 13, the guide structure includes a guide rib and a guide groove used in conjunction, one of which is disposed on the functional expansion base 2 and the other is disposed on the functional expansion module 3.

[0047] Preferred, such as Figure 10 As shown in Figure 11, the module slot 20 is a U-shaped slot, and the functional expansion 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.

[0048] Preferred, such as Figure 12 As shown in Figure 13, the module slot 20 is a right-angled slot. The functional 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.

[0049] The module slot 20 can be configured with different shapes and the functional expansion module 3 can be inserted into the module slot 20 from different directions, so that the functional expansion base 2 can cooperate with more functional expansion modules 3 of different types (structure and function types).

[0050] Preferably, the residual current circuit breaker 1 includes a short-circuit protection mechanism, an overload protection mechanism, a residual current protection mechanism, an over / under voltage protection mechanism, and a residual current self-test mechanism. Of course, the mechanisms included in the residual current circuit breaker 1 can be added or removed according to actual needs.

[0051] Preferably, the function expansion module 3 is a surge protection module, a split excitation tripping module 3a, an automatic reclosing module 3b, an auxiliary contact module 3c, or a fault alarm indication module 3d, which can be plugged into the module slot 20. Users can replace the function expansion module with different functions as needed, so that the leakage circuit breaker device of the application can be applied to more use scenarios.

[0052] Preferably, as shown in Figure 2 -5, 7, 9, the leakage circuit breaker 1 includes L-pole circuit and N-pole circuit arranged side by side and spaced apart, and a circuit breaker housing 1a; the circuit breaker housing 1a includes a first partition plate 1c arranged therein, and the L-pole circuit and the N-pole circuit are arranged in the circuit breaker housing 1a and located on both sides of the first partition plate 1c respectively; the function expansion base 2 includes a PE-pole circuit and a second partition plate 2a cooperating with the circuit breaker housing 1a, 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 arranged on both sides of the second partition plate 2a respectively; the L-pole circuit, the N-pole circuit and the PE-pole circuit are arranged in different spaces respectively, which is conducive to improving the insulation performance of the leakage circuit breaker device of the application.

[0053] Preferably, as shown in Figure 3 , 5 , 9, the N-pole circuit includes an N-pole moving contact 110d and an N-pole static contact 111d used in cooperation, the leakage circuit breaker 1 includes an N-pole arc-extinguishing chamber, one end of the N-pole moving contact 110d is inserted into one end of the N-pole arc-extinguishing chamber, and the N-pole moving contact 110d is closed / broken with the N-pole static 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 side wall 212c, the arc cutting side wall 212c is provided with a plurality of arc-extinguishing holes arranged at intervals, and the leakage circuit breaker further includes an exhaust hole 214c cooperating with the arc cutting side wall 212c; the N-pole arc-extinguishing chamber, on the one hand, avoids the diffusion of electric arc in the N-pole circuit, which is conducive to improving the insulation of the N-pole circuit, and on the other hand, is conducive to improving the arc-extinguishing efficiency and arc-extinguishing performance.

[0054] As shown in Figure 8 , 14 , 15, 21, it is an implementation manner of the leakage circuit breaker device of the application.

[0055] As shown in Figure 14 and 15 , the function expansion module 3 is a split excitation tripping module 3a, and the split excitation tripping module 3a includes a split excitation tripping device 36a; as shown in Figure 8 , the function expansion base 2 includes a switch member 23b cooperating with the split excitation tripping device 36 for driving; as shown in Figure 21As shown in the figure, the leakage circuit breaker 1 comprises a leakage test circuit, which comprises a test resistor R, and the switch piece 23b and the test resistor R are connected in series between the phase circuit and the N-pole circuit of the leakage circuit breaker 1; the split excitation tripping module 3a receives an external tripping signal to drive the split excitation tripping device 36a to act, and drive the switch piece 23a to conduct, so as to trip the leakage circuit breaker 1. The split excitation tripping module 3 is easy to install, and realizes the split excitation tripping mode of the leakage circuit breaker device of the application; and the split excitation tripping module is inserted on the function expansion base to be used, realizes plug and play, and thus improves the work efficiency of the user.

[0056] It should be pointed out that the leakage circuit breaker 1 is a two-phase circuit breaker, and the phase circuit of the leakage circuit breaker 1 is the L-pole circuit.

[0057] Preferably, as shown in the figures, Figure 14 and 15 As shown in the figures, the split excitation tripping module 3a comprises a first power terminal 31a and a first signal terminal 34a; as shown in the figures, Figure 4 and 8 As shown in the figures, the function expansion base 2 comprises a base power terminal 20b and a base signal assembly 25b, the base signal assembly 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 contact matched with the base signal terminal 252b. The matching of the first power terminal 31a and the base power terminal 20b and the matching of the first signal terminal 34a and the base signal terminal 252b improve the convenience of wiring of the split excitation tripping module 3a and the function expansion base 2. Further, as shown in the figures, Figure 8 The module slot 20 is a U-shaped slot, the base power terminal 20b and the switch piece 23b are arranged at the bottom of the U-shaped structure of the module slot 20 respectively, and the base signal assembly 25b is arranged at the side wall of the U-shaped structure of the module slot 20, so that the plug matching of the first power terminal 31a and the base power terminal 20b and the contact matching of the first signal terminal 34a and the base signal terminal 252b can be completed as the split excitation tripping module 3a is inserted into the module socket 20, and the assembly efficiency of the split excitation tripping module 3a and the function expansion base 2 is greatly improved.

[0058] As shown in the figures, Figure 1 , 7 , 16, 17, which is another implementation mode of the leakage circuit breaker device of the application.

[0059] As shown in the figures, Figure 16 and 17As shown in the figure, the function expansion module 3 is an automatic reclosing module 3b, which comprises a second module shell 30b, a motor 32b arranged in the second module shell 30b, a gear set drivingly connected with the motor 32b, a driving link 34b, and a second handle 31b pivotally arranged on the second module shell 30b and drivingly matched with the gear set through the driving link 34b. The leakage circuit breaker 1 comprises a first handle 11b, and the second handle 31b is drivingly connected with the first handle 11b and synchronously actuated. The automatic reclosing module 3b is plug-in matched with the function expansion base 2, which is convenient to assemble and realizes remote automatic reclosing operation of the leakage circuit breaker 1. Further, as shown in the figure, Figure 16 As shown in the figure, the second handle 31b comprises a second rotating part 311b pivotally arranged on the second module shell 30b and a second actuating part 310b arranged on the periphery of the second rotating part 311b, one end of the second actuating part 310b is connected with the second rotating part 311b, and the other end is detachably drivingly connected with the first handle 11b. Further, as shown in the figure, Figure 16 As shown in the figure, one end of the handle actuating part 310b is provided with a second clamping groove, and the first handle 11b is clamped in the second clamping groove. The second handle 31b and the first handle 11b are convenient to assemble / dismount, which further improves the assembly efficiency of the automatic reclosing module 3b and the function expansion base 2.

[0060] Preferably, as shown in the figure, Figure 17 As shown in the figure, the second handle 31b further comprises a second driven part 312b arranged on the periphery of the second rotating part 311b of the second handle 31b; the gear set of the automatic reclosing module 3b comprises a driving gear 35b pivotally arranged on the second module shell 30b, one end of the driving link 34b is drivingly connected with the driving gear 35b, and the other end is drivingly matched with the second driven part 312b. As shown in the figure, Figure 2 As shown in the figure, the leakage circuit breaker 1 further comprises an operating mechanism 12b, which comprises a locking piece 122b and a jumping piece 123b in locking cooperation, and the jumping piece 122b is drivingly matched with the driving gear 35b; the driving gear 35b rotates in a first direction, and through the driving link 34b, the second handle 31b, and the first handle 11b in driving cooperation in sequence, the leakage circuit breaker 1 is closed; the driving gear 35b rotates in a second direction, the driving gear 35b drives the jumping piece 123b to rotate and releases the locking cooperation with the locking piece 122b, so that the leakage circuit breaker 1 is opened. The automatic reclosing module 3b can realize automatic closing and automatic opening of the leakage circuit breaker 1.

[0061] As shown in the figure, Figure 1 , 7 , 20 shows another implementation mode of the leakage circuit breaker device of the present application.

[0062] As Figure 20 shown in the figure, the function expansion module 3 is a fault alarm indication module 3d, the fault alarm indication module 3d includes a fourth module shell 30d, an alarm circuit board 34d and an alarm element arranged in the fourth module shell 30d respectively, and a fourth power terminal 36d; the alarm element is arranged on the alarm circuit board 34d, and the fourth power terminal 36d is connected with the alarm circuit board 34d and is plugged with the function expansion base 2. The fault alarm indication module 3d is quickly and simply assembled with the function expansion base 2, and when a fault occurs, an alarm signal is sent to remind the user to timely eliminate the fault and ensure the normal operation of the power equipment. Further, the alarm element includes a sound alarm element 37d, and / or the alarm element includes a light-emitting alarm element 32d.

[0063] As Figure 1 , 7 , 18, 19 shown is another implementation of the leakage circuit breaker device of the present application.

[0064] As Figure 18 shown, the function expansion module 3 is an auxiliary contact module 3c, the auxiliary contact module 3c includes a third module shell 30c, a third handle 31c and at least one group of contact groups arranged in the third module shell 30c, the third handle 31c is pivotally arranged on the third module shell 30c, each group of auxiliary contact groups includes an auxiliary moving contact 320c and an auxiliary static contact 321c used in cooperation, and the auxiliary moving contact 320c is drivingly connected with the third handle 31c; the leakage circuit breaker 1 includes a first handle 11b, which is drivingly connected with the third handle 31c and acts synchronously. The third handle 31c is drivingly connected with the first handle 11b and acts synchronously, realizing the synchronous action of the auxiliary contact module 3c and the leakage circuit breaker 1. The auxiliary contact module 3c is simply assembled with the function expansion base 2, realizing the synchronous action of the auxiliary moving contact and the moving contact of the leakage circuit breaker, and providing convenience for the function expansion of the leakage circuit breaker device.

[0065] As Figure 3 -6, 21 shown is another implementation of the leakage circuit breaker device of the present application.

[0066] The leakage circuit breaker 1 comprises a circuit breaker shell 1a and at least one phase pole circuit, N pole circuit, leakage test circuit and test button 13g arranged in the circuit breaker shell 1a respectively; the phase pole circuit comprises a first handle 11b and operating mechanism 12b connected by driving, and the phase pole circuit and N pole circuit are synchronously closed / broken; the leakage test circuit comprises a test resistance R and switch circuit connected in series, the switch circuit comprises first switch S1 and second switch S2 connected in series, the first switch S1 and second switch S2 are both normally open switches, and are respectively driven in cooperation with the operating mechanism 12b and test button 13g; when the first handle 11b is pulled to drive the operating mechanism 12b to act to close the leakage circuit breaker 1, the operating mechanism 12b drives the first switch S1 to close; and the second switch S2 is driven to close by pressing the test button 13g. The leakage circuit breaker device of the present application, the leakage test circuit of which is only conducted when the test button 13g is pressed after the leakage circuit breaker 1 is closed, avoids the situation that the leakage circuit breaker device is damaged due to the misoperation of the test button 13g.

[0067] Preferably, as shown in Figure 3 -6, 21, the switch circuit comprises first conductive part 10g, second conductive part 11g and third conductive part 12g, the second conductive part 11g is driven in cooperation with the test button 13g, the second conductive part 11g and the first conductive part 10g constitute the second switch S2, the third conductive part 12g is driven in cooperation with the operating mechanism 12b, and the third conductive part 12g and the first conductive part 10g constitute the first switch S1. Further, as shown in Figure 3 , 5 , 6, the second conductive part 11g and the third conductive part 12g are both torsion springs, one end of each of the second conductive part 11g and the third conductive part 12g is fixedly arranged, and the other end of each of the second conductive part 11g and the third conductive part 12g is driven in cooperation with the test button 13g and the operating mechanism 12b respectively. The switch circuit is composed of the first conductive part 10g, the second conductive part 11g and the third conductive part 12g, which has simple structure, small space occupation and low cost. It should be pointed out that the switch circuit is not limited to the above-mentioned implementation, and the first switch S1 and the second switch S2 can also be realized by micro switches, but the space occupation is relatively large and the cost is also relatively high.

[0068] The leakage circuit breaker device of the present application will be further described below in combination with the drawings of the specification and specific embodiments.

[0069] As shown in Figure 1 -13, it is the first embodiment of the leakage circuit breaker device of the present application.

[0070] As shown in Figure 1 , 10The leakage circuit breaker device of the present application comprises a leakage circuit breaker 1 and a function expansion base 2 in an integrated structure, and a function expansion module 3 which is plugged into the function expansion base 2; the function expansion base 2 is arranged on one side of the leakage circuit breaker 1, and the function expansion base 2 comprises a module slot 20 in which the function expansion module 3 is inserted. Of course, the leakage circuit breaker 1 and the function expansion base 2 can also be detachably spliced together.

[0071] It should be pointed out that the leakage circuit breaker 1, as a commonly used electrical switching device, 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), an over / under voltage protection mechanism (over / under voltage protection function), and a leakage self-checking mechanism (leakage self-checking function). Of course, depending on the type of the leakage circuit breaker 1 product, the above-listed mechanisms (functions) can be increased or decreased.

[0072] Preferably, the function expansion module 3 is a surge protection module, a split excitation tripping module 3a, an automatic reclosing module 3b, an auxiliary contact module 3c, or a fault alarm indication module 3d. The function expansion module 3 can be any of the above modules, but is not limited to the above modules, and can be expanded according to actual user needs, so that the leakage circuit breaker device of the present application meets the application in different scenarios and under different needs.

[0073] Preferably, the function expansion base 2 comprises a spring clip type conductive part, and the function expansion module 3 comprises a module plug which is plugged into the spring clip type conductive part.

[0074] Preferably, as shown in Figure 1 、 10 As shown in FIG. 13, the leakage circuit breaker device further comprises a guide structure for guiding and limiting the function expansion module 3 during the process of inserting the function expansion module 3 into the module slot 20. Further, as shown in Figure 1 、 10 As shown in FIG. 13, the guide structure comprises a guide rib and a guide groove which are used in cooperation, one of which is arranged on the function expansion base 2, and the other of which is arranged on the function expansion module 3. Specifically, as shown in Figure 1 、 10 As shown in FIG. 13, the function expansion base 2 comprises a guide groove arranged on the side wall of the module slot 20, and the function expansion module 3 comprises a guide rib, the guide groove and the guide rib cooperate to guide and limit the path of inserting the function expansion module 3 into the function expansion base 2, so that the function expansion module 3 is more smoothly inserted into the module slot 20, and the function expansion module 3 is more accurately connected with the function expansion base 2 (for example, the power terminals of the function expansion module 3 are more easily and accurately aligned with the power terminals on the function expansion base 2).

[0075] Preferably, as shown in Figure 10 The functional expansion module 3 is inserted into the module slot 20 from a first direction or a second direction, the first direction and the second direction being perpendicular to each other.

[0076] Preferably, as shown in Figure 10 The module slot 20 is a U-shaped slot, and the functional expansion module 3 is inserted into the module slot 20 from the opening end of the U-shaped slot or from the side opposite to the residual current circuit breaker 1. Specifically, as shown in the directions of Figure 10 and 11 The module slot 20 is a U-shaped slot with the opening end facing upward, and the functional expansion module 3 is inserted into the module slot 20 from above or from the right side.

[0077] Preferably, as shown in Figure 12 The module slot 20 is a right-angled slot, the first direction is opposite to one side wall of the right-angled slot, and the second direction is opposite to another side wall of the right-angled slot. Specifically, as shown in the directions of Figure 12 and 13 The module slot 20 is a right-angled 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, i.e. the functional expansion module 3 is inserted into the module slot 20 horizontally from the right side or vertically from above.

[0078] Preferably, the residual current circuit breaker comprises at least one phase pole circuit and an N pole circuit, and the phase pole circuit and the N pole circuit are synchronously closed / broken.

[0079] As shown in Figure 2 The residual current circuit breaker 1 is preferably a two-phase circuit breaker, comprising an L pole circuit and an N pole circuit arranged side by side and spaced apart, the L pole circuit being a phase pole circuit; the functional expansion base 2 comprises a PE pole circuit, and the L pole circuit is located on the two sides of the N pole circuit, and the PE pole circuit cooperates with the functional expansion module 3. The PE pole circuit is arranged on one side of the N pole circuit, which is conducive to the electrical connection of the PE pole circuit with the residual current test circuit and the residual current circuit breaker.

[0080] Preferably, as shown in Figure 2-3、7-9, the residual current circuit breaker 1 comprises a circuit breaker housing 1a, the circuit breaker housing 1a comprises a first partition plate 1c arranged at the middle part thereof, the first partition plate 1c separates the circuit breaker housing 1a into a first space and a second space, the L-pole circuit and the N-pole circuit are arranged in the circuit breaker housing 1a and are 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 expansion base 2 comprises a second partition plate 2a matched with the circuit breaker housing 1a, 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 at two sides of the second partition plate 2a.

[0081] Preferably, as shown in Figure 3 and 5 , the N-pole circuit comprises an N-pole moving contact 110d and an N-pole static contact 111d which are used in cooperation; as shown in Figure 3 , 5 , 9, the circuit breaker housing 1a comprises an N-pole arc-extinguishing chamber, one end of the N-pole moving contact 110d is inserted into one end of the N-pole arc-extinguishing chamber, and the N-pole moving contact 110d is closed / broken with the N-pole static contact 111d in the N-pole arc-extinguishing chamber, and the other end of the N-pole arc-extinguishing chamber is provided with an arc cutting side wall 212c, the arc cutting side wall 212c is provided with a plurality of arc-extinguishing holes arranged at intervals, and the circuit breaker housing 1a further comprises an exhaust hole 214c matched with the arc cutting side wall 212c. Further, as shown in Figure 3 , the first partition plate 1c comprises a first upper blocking rib 213c and a first side blocking rib 211c; as shown in Figure 9 , the second partition plate 2a comprises a second upper blocking rib 23a and a second side blocking rib 21a, the second upper blocking rib 23a and the first upper blocking rib 213c cooperate to form an upper side wall of the arc-extinguishing chamber of the N-pole arc-extinguishing chamber, one end of the N-pole moving contact 110d passes through the upper side wall of the arc-extinguishing chamber, so that the arc gas in the N-pole arc-extinguishing chamber cannot be sprayed to the side where the N-pole moving contact 110d is exposed from the N-pole arc-extinguishing chamber, and the second side blocking rib 21a and the first side blocking rib 211c cooperate 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.

[0082] Preferably, as shown in Figure 2 , a plurality of line-lapping protruding ribs 10a are arranged at intervals side by side on the side of the first partition plate 1c facing the L-pole circuit, and the wires of the L-pole circuit are arranged on the line-lapping protruding ribs 10a, so that the wires of the L-pole circuit are closer to the side wall of the residual current circuit breaker 1, which is beneficial to heat dissipation of the residual current circuit breaker 1.

[0083] Preferably, as shown in Figure 4 , 7As shown in Figure 8, the PE electrode circuit includes a base power terminal 20b, which includes a grounding conductive element 200b, an L-electrode conductive element 201b connected to the L-electrode circuit, and an N-electrode conductive element 202b connected to the N-electrode circuit. Furthermore, the grounding conductive element 200b, the L-electrode conductive element 201b, and the N-electrode conductive element 202b are all elastic clip-type conductive elements.

[0084] Preferred, such as Figure 4 , 7 As shown in Figure 8, the PE electrode circuit further includes a switching element 23b; the leakage current circuit breaker 1 further includes a leakage current testing circuit, which includes a test resistor R connected in series between the L electrode circuit and the N electrode circuit and a switching circuit, with the switching element 23b connected in parallel with the switching circuit. Further, the test resistor R and the switching circuit are connected in series between the output terminal of the L electrode circuit and the input terminal of the N electrode circuit (or, the test resistor R and the switching circuit are connected in series between the input terminal of the L electrode circuit and the output terminal of the N electrode circuit); the switching element 23b is a micro switch.

[0085] Preferred, such as Figure 7 As shown in Figure 8, the PE electrode circuit also includes a base circuit board 24b, and the switching element 23b is connected to the base circuit board 24b. Further, as... Figure 7 As shown in Figure 8, the switch 23b and the base circuit board 24b are stacked at the bottom of the module slot 20.

[0086] Preferably, when the functional expansion module 3 is a surge protection module or a shunt trip module 3a, it works in conjunction with the switch 23b. Further, when the functional expansion module 3 is a surge protection module, the surge module mechanism will activate when a surge current occurs in the circuit (a typical surge protection module uses a low-temperature solder gas discharge tube and a varistor; when an overcurrent occurs, the low-temperature solder joint will burn out, causing the corresponding mechanism to activate). This surge module mechanism will then push the switch 23b to connect, causing the residual current circuit breaker 1 to trip, and the surge current will be connected to the ground through the grounding conductive element 200b of the PE electrode.

[0087] Preferred, such as Figure 8 As shown, the PE electrode circuit also includes a base signal component 25b, and the function expansion module 3 is a shunt trip module 3a or an automatic reclosing module 3b, which works in conjunction with the base signal component 25b. External control signals are input to the function expansion module 3 through the base signal component 25b.

[0088] Preferred, such as Figure 1 , 10As shown in Fig. 11, when the module slot 20 is a U-shaped slot, the base power terminal 20b, the switch piece 23b and the base circuit board 24b are arranged at the bottom of the module slot 20, and the base signal assembly 25b is arranged at the side wall of the module slot 20.

[0089] Preferably, as shown in Fig. 12, the module slot 20 is a right-angled slot, the base power terminal 20b, the switch piece 23b and the base circuit board 24b are arranged at one side wall of the module slot 20, and the base signal assembly 25b is arranged at the other side wall of the module slot 20. Figure 12

[0090] It should be noted that the layout of the PE pole circuit in the function expansion base 2 is not limited to the above two, 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 piece 23b, the base circuit board 24b and the base signal terminal 25b are arranged at the bottom of the module slot 20; for example, when the module slot 20 is a right-angled slot, the base power terminal 20b, the switch piece 23b, the base circuit board 24b and the base signal terminal 25b are arranged at one side wall of the module slot 20, and the base signal assembly 25b is arranged at the other side wall of the module slot 20, which will not be listed one by one here.

[0091] As shown in Fig. 13, it is an embodiment of the L pole circuit: the L pole circuit includes a first handle 11b, an operating mechanism 12b, a movable contact 130b and a static contact 131b used in cooperation, the first handle 11b is pivotally arranged on the first partition plate 1c and is drivingly connected with the operating handle 12b, and the operating handle 12b is drivingly connected with the movable contact 130b. Further, the operating mechanism 12b includes a first connecting rod 120b, a rotating plate 121b, a lock piece 122b and a jump piece 123b, the first handle 11b is drivingly connected with the lock piece 122b through the first connecting rod 120b, the rotating plate 121b is pivotally arranged on the first partition plate 1c, the lock piece 122b and the jump piece 123b are respectively pivotally arranged on the rotating plate 121b and are locked in cooperation, and the rotating plate 121b is drivingly connected with the movable contact 130b. Figure 2 Preferably, the L pole circuit further includes a short-circuit protection mechanism 14b, an overload protection mechanism 15b and an arc-extinguishing chamber 16b.

[0092] It should be noted that when the residual current circuit breaker 1 includes a plurality of phase pole circuits, each phase pole circuit can include an independent operating mechanism, or all phase pole circuits can share a set of operating mechanisms.

[0093] As shown in Fig. 14, it is an embodiment of the L pole circuit: the L pole circuit includes a first handle 11b, an operating mechanism 12b, a movable contact 130b and a static contact 131b used in cooperation, the first handle 11b is pivotally arranged on the first partition plate 1c and is drivingly connected with the operating handle 12b, and the operating handle 12b is drivingly connected with the movable contact 130b. Further, the operating mechanism 12b includes a first connecting rod 120b, a rotating plate 121b, a lock piece 122b and a jump piece 123b, the first handle 11b is drivingly connected with the lock piece 122b through the first connecting rod 120b, the rotating plate 121b is pivotally arranged on the first partition plate 1c, the lock piece 122b and the jump piece 123b are respectively pivotally arranged on the rotating plate 121b and are locked in cooperation, and the rotating plate 121b is drivingly connected with the movable contact 130b.

[0094] Figure 3 ​​As shown in the figure, the N-pole circuit includes an N-pole movable contact 110d and an N-pole fixed contact 111d, and a driving rod 10d. The N-pole movable contact 110d is rotatably arranged on the first partition plate 1c. The driving rod 110d is connected to one end of the rotating plate 121b of the operating mechanism 12b, and the other end of the driving rod 110d is connected to the N-pole movable contact 110d.

[0095] As shown in the figure, the N-pole circuit includes an N-pole movable contact 110d and an N-pole fixed contact 111d, and a driving rod 10d. The N-pole movable contact 110d is rotatably arranged on the first partition plate 1c. The driving rod 110d is connected to one end of the rotating plate 121b of the operating mechanism 12b, and the other end of the driving rod 110d is connected to the N-pole movable contact 110d. Figure 3 As shown in the figure, the N-pole circuit includes an N-pole movable contact 110d and an N-pole fixed contact 111d, and a driving rod 10d. The N-pole movable contact 110d is rotatably arranged on the first partition plate 1c. The driving rod 110d is connected to one end of the rotating plate 121b of the operating mechanism 12b, and the other end of the driving rod 110d is connected to the N-pole movable contact 110d.

[0096] As shown in the figure, the N-pole circuit includes an N-pole movable contact 110d and an N-pole fixed contact 111d, and a driving rod 10d. The N-pole movable contact 110d is rotatably arranged on the first partition plate 1c. The driving rod 110d is connected to one end of the rotating plate 121b of the operating mechanism 12b, and the other end of the driving rod 110d is connected to the N-pole movable contact 110d. Figure 8 As shown in the figure, the N-pole circuit includes an N-pole movable contact 110d and an N-pole fixed contact 111d, and a driving rod 10d. The N-pole movable contact 110d is rotatably arranged on the first partition plate 1c. The driving rod 110d is connected to one end of the rotating plate 121b of the operating mechanism 12b, and the other end of the driving rod 110d is connected to the N-pole movable contact 110d. 15 As shown in the figure, the N-pole circuit includes an N-pole movable contact 110d and an N-pole fixed contact 111d, and a driving rod 10d. The N-pole movable contact 110d is rotatably arranged on the first partition plate 1c. The driving rod 110d is connected to one end of the rotating plate 121b of the operating mechanism 12b, and the other end of the driving rod 110d is connected to the N-pole movable contact 110d. Figure 8 As shown in the figure, the N-pole circuit includes an N-pole movable contact 110d and an N-pole fixed contact 111d, and a driving rod 10d. The N-pole movable contact 110d is rotatably arranged on the first partition plate 1c. The driving rod 110d is connected to one end of the rotating plate 121b of the operating mechanism 12b, and the other end of the driving rod 110d is connected to the N-pole movable contact 110d. 15 As shown in the figure, the N-pole circuit includes an N-pole movable contact 110d and an N-pole fixed contact 111d, and a driving rod 10d. The N-pole movable contact 110d is rotatably arranged on the first partition plate 1c. The driving rod 110d is connected to one end of the rotating plate 121b of the operating mechanism 12b, and the other end of the driving rod 110d is connected to the N-pole movable contact 110d.

[0097] As shown in the figure, the N-pole circuit includes an N-pole movable contact 110d and an N-pole fixed contact 111d, and a driving rod 10d. The N-pole movable contact 110d is rotatably arranged on the first partition plate 1c. The driving rod 110d is connected to one end of the rotating plate 121b of the operating mechanism 12b, and the other end of the driving rod 110d is connected to the N-pole movable contact 110d. Figure 1 As shown in the figure, the N-pole circuit includes an N-pole movable contact 110d and an N-pole fixed contact 111d, and a driving rod 10d. The N-pole movable contact 110d is rotatably arranged on the first partition plate 1c. The driving rod 110d is connected to one end of the rotating plate 121b of the operating mechanism 12b, and the other end of the driving rod 110d is connected to the N-pole movable contact 110d. 4 As shown in the figure, the N-pole circuit includes an N-pole movable contact 110d and an N-pole fixed contact 111d, and a driving rod 10d. The N-pole movable contact 110d is rotatably arranged on the first partition plate 1c. The driving rod 110d is connected to one end of the rotating plate 121b of the operating mechanism 12b, and the other end of the driving rod 110d is connected to the N-pole movable contact 110d.

[0098] As shown in the figure, the N-pole circuit includes an N-pole movable contact 110d and an N-pole fixed contact 111d, and a driving rod 10d. The N-pole movable contact 110d is rotatably arranged on the first partition plate 1c. The driving rod 110d is connected to one end of the rotating plate 121b of the operating mechanism 12b, and the other end of the driving rod 110d is connected to the N-pole movable contact 110d.

[0099] As shown in the figure, the N-pole circuit includes an N-pole movable contact 110d and an N-pole fixed contact 111d, and a driving rod 10d. The N-pole movable contact 110d is rotatably arranged on the first partition plate 1c. The driving rod 110d is connected to one end of the rotating plate 121b of the operating mechanism 12b, and the other end of the driving rod 110d is connected to the N-pole movable contact 110d.

[0100] As shown in the figure, the N-pole circuit includes an N-pole movable contact 110d and an N-pole fixed contact 111d, and a driving rod 10d. The N-pole movable contact 110d is rotatably arranged on the first partition plate 1c. The driving rod 110d is connected to one end of the rotating plate 121b of the operating mechanism 12b, and the other end of the driving rod 110d is connected to the N-pole movable contact 110d. Figure 14As shown in Figure 15, the shunt trip module 3a includes a first power supply terminal 31a and a first signal terminal 34a; as Figure 4 , 7 As shown in Figures 8 and 15, the functional expansion 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 into the base power terminal 20b, and the first signal terminal 34a is in contact with the base signal terminal 252b.

[0101] Preferred, such as Figure 14 As shown in Figure 15, the first power terminal 31a is a plug-type terminal, as... Figure 7 As shown in Figure 8, the base power terminal 20b is a flexible clip-type conductive element; as Figure 8 and 15 As shown, the base signal terminal 252b is a spring-loaded terminal, such as... Figure 15 As shown, the first signal terminal 34a is a contact plate type terminal, which elastically contacts and engages with the base signal terminal 252b. Further, as... Figure 14 As shown in Figure 15, the first power terminal 31a includes a first L-pole plug, a first N-pole plug, and a first ground plug, as follows: Figure 7 As shown in Figure 8, the base power terminal 20b includes a grounding conductive element 200b, an L-pole conductive element 201b, and an N-pole conductive element 202b, which are respectively connected to the first grounding plug, the first L-pole plug, and the first N-pole plug.

[0102] Preferred, such as Figure 4 , 7 As shown in Figure 8, the switching element 23b is a normally open micro switch.

[0103] Preferred, such as Figure 14 and 15 As shown, the shunt trip unit 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 inside the first module housing 30a. The first module circuit board 38a and the shunt trip unit 36a are respectively disposed on the first module mounting plate 37a. The first power terminal 31a, the first signal terminal 34a, and the shunt trip unit 36a are respectively connected to the first module circuit board 38a. Further, as... Figure 14 and 15 As shown, one end of the first power terminal 31a protrudes from the lower side of the shunt trip unit 3a, and the first signal terminal 34a is located on the left side wall of the first module housing 30a.

[0104] Preferred, such as Figure 1 , 10The module slot 20 is a U-shaped slot, and the base power terminal 20b and the switch 23b are arranged at the bottom of the U-shaped slot, and the base signal terminal 25b is arranged at the side wall of the U-shaped slot.

[0105] Preferably, as shown in Figure 14 The first module cover 30a comprises a first guide rib 300a; as shown in Figure 1 、 10 The side wall of the module slot 20 is provided with a guide groove.

[0106] As shown in Figure 1 、 4 , 7-8, 10-11, 16-17, it is a third embodiment of the leakage circuit breaker device of the application.

[0107] In the leakage circuit breaker device of the embodiment, the function expansion module 3 is an automatic reclosing module 3b, which comprises a second module shell 30b, a motor 32b arranged in the second module shell 30b, a gear set drivingly connected with the motor 32b, a driving link 34b, and a second handle 31b pivotally arranged on the second module shell 30b and drivingly connected with the gear set through the driving link 34b; the leakage circuit breaker 1 comprises a first handle 11b, and the second handle 31b is drivingly connected with the first handle 11b and synchronously acts.

[0108] Preferably, the automatic reclosing module 3b comprises a second signal terminal in contact with the base signal terminal 252b of the function expansion base 2, and an external opening / closing signal is input into the automatic reclosing module 3b through the base signal terminal 252b and the second signal terminal.

[0109] Preferably, as shown in Figure 16 and 17 The second handle 31b comprises a second rotating part 311b pivotally arranged on the second module shell 30b and a second actuating part 310b arranged at the periphery of the second rotating part 311b, one end of the second actuating part 310b is connected with the second rotating part 311b, and the other end is detachably drivingly connected with the first handle 11b and synchronously acts. Further, as shown in Figure 16 and 17 The second handle 31b further comprises a second driven part 312b arranged at the periphery of the second rotating part 311b; the gear set of the automatic reclosing module 3b comprises a driving gear 35b pivotally arranged on the second module shell 30b, one end of the driving link 34b is drivingly connected with the driving gear 35b, and the other end is drivingly connected with the second driven part 312b.

[0110] Preferably, one end of the second toggle part 310b is connected with the second rotating part 311b, and the other end is provided with a second clamping groove, and the first handle 11b is clamped in the second clamping groove.

[0111] Preferably, the automatic reclosing module 3b further comprises a guide limiting groove 300b arranged on the second module shell 30b, one end of the driving connecting rod 34b is connected with the driving gear 35b, and the other end is movably inserted into the guide limiting groove 300b and is drivingly matched with the second driven part 312b. Further, the guide limiting groove 300b is an arc-shaped groove.

[0112] Preferably, the jump buckle part 123b of the operating mechanism 12b is drivingly matched with the driving gear 35b; when the driving gear 35b rotates in a third direction, the driving connecting rod 34b, the second handle 31b and the first handle 11b are sequentially driven to close the residual current circuit breaker 1; when the driving gear 35b rotates in a fourth direction, the jump buckle part 123b is driven to rotate and is disengaged from the locking buckle part 122b, so that the residual current circuit breaker 1 is opened; the third direction and the fourth direction are opposite (i.e. are opposite directions). Further, the jump buckle part 123b comprises a jump buckle part driven column, the jump buckle part driven column is drivingly matched with the driving gear 35b, and the driving gear 35b is driven to rotate and drives the jump buckle part to rotate through the jump buckle part driven column. As shown in Figure 16 , the driving gear 35b is provided with a corresponding transmission part below, and the second module shell 30b is provided with a corresponding transmission hole, so that the driving gear 35b can drive the jump buckle part 123b through the transmission part.

[0113] Preferably, as shown in Figure 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 sequentially meshed, and the worm 33b is drivingly connected with the motor 32b.

[0114] Preferably, the driving connecting rod 34b is a U-shaped connecting rod.

[0115] It should be pointed out that the automatic reclosing module 3b, the structure and principle of the motor 32b and the gear set driving the second handle 31b to rotate, and the structure and principle of the driving gear 35 driving the jump buckle part 123b to rotate and disengage from the locking buckle part 122b, are all prior art in the field, and will not be described in detail here; one of the main improvements of the residual current circuit breaker device in the 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 expansion base 2.

[0116] Preferably, as shown in Figure 16 and 17As shown in the figure, the automatic reclosing module 3b further comprises a second power terminal 38b which is plugged with the base power terminal 20b of the function expansion base 2. Further, the residual current circuit breaker 1 is preferably a two-phase circuit breaker; the second power terminal 38b comprises a second L pole plug and a second N pole plug which are respectively plugged with the L pole conducting part 201b and the N pole conducting part 202b of the base power terminal 20b.

[0117] Preferably, as shown in the figure, Figure 17 As shown in the figure, the second module shell 30b comprises a second guide rib; as shown in the figure, Figure 1 , 10 As shown in the figure, 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.

[0118] Preferably, as shown in the figure, Figure 1 , 10 As shown in the figure, the module slot 20 is a U-shaped structure slot, and the base power terminal 20b is arranged at the bottom of the U-shaped structure of the module slot 20; as shown in the figure, one end of the second power terminal 38b protrudes from the lower side of the automatic reclosing module 3b. Figure 17

[0119] As shown in the figure, Figure 1 , 4 , 7-8, 10-11, 20, it is the fourth embodiment of the residual current circuit breaker device of the application.

[0120] In the residual current circuit breaker device of the embodiment, the function expansion module 3 is a fault alarm indication module 3d, and the fault alarm indication module 3d comprises a fourth module shell 30d, an alarm circuit board 34d, a sound alarm element 37d and a light-emitting alarm element 32d which are respectively arranged in the fourth module shell 30d, and a fourth power terminal 36d; 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 plugged with the function expansion base 2. Further, the fault alarm indication module 3d further comprises a fourth mounting plate 38d which is arranged in the fourth module shell 30d, and the alarm circuit board 34d and the fourth power terminal 36d are respectively arranged on the fourth mounting plate 38d.

[0121] Preferably, as shown in the figure, Figure 20 As shown in the figure, the fourth module shell 30d comprises a light-transmitting structure 33d which is matched with the light-emitting alarm element 32d. Further, the light-transmitting structure 33d is a transparent part of the fourth module shell 30d.

[0122] Preferably, the sound alarm element 37d is a buzzer, and the light-emitting alarm element 32d is a light-emitting diode.

[0123] ​Preferably, the residual current circuit breaker is a two-phase circuit breaker; such as Figure 20 As shown, the fourth power terminal 36d includes a fourth L-pole plug 361d, a fourth N-pole plug 362d, and a fourth grounding plug 360d, which are respectively connected to the L-pole conductive element 201b, the N-pole conductive element 202b, and the grounding conductive element 200b of the base power terminal 20b.

[0124] Preferred, such as Figure 20 As shown, the fourth module housing 30d includes a fourth guide rib, such as... Figure 1 , 10 As shown in Figure 11, a guide groove is provided on the side wall of the module slot 20, and the fourth guide rib is used in conjunction with the guide groove.

[0125] Preferred, such as Figure 1 , 10 As shown in Figure 11, the module slot 20 is a U-shaped slot, and the base power terminal 20b is located at the bottom of the U-shaped structure of the module slot 20; as Figure 20 As shown, one end of the fourth power terminal 36d protrudes from the lower side of the fault alarm indicator module 3d.

[0126] like Figure 1 , 4 Figures 7-8, 10-11, and 18-19 show the fifth embodiment of the residual current circuit breaker device of the present invention.

[0127] In this embodiment of the residual current circuit breaker device, its functional 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 set of auxiliary contact groups disposed within the third module housing 30c. The third handle 31c is pivotally disposed on the third module housing 30c. Each set of auxiliary contact groups includes an auxiliary moving contact 320c and an auxiliary stationary contact 321c used in conjunction. The auxiliary moving contact 320c is driven and connected to the third handle 31c. The residual current circuit breaker 1 includes a first handle 11b, which is driven and connected to the third handle 31c and operates synchronously.

[0128] Preferred, such as Figure 18 As shown, each auxiliary contact group includes an auxiliary moving contact 320c and two auxiliary stationary contacts 321c respectively disposed on both sides of the auxiliary moving contact 320c. Of the two auxiliary stationary contacts 321c, one is a normally closed stationary contact and the other is a normally open stationary contact. Furthermore, the auxiliary contact module 3c also includes auxiliary terminal blocks for one-to-one cooperation with the auxiliary contact group. Each auxiliary terminal block includes two terminals, which are electrically connected to the two auxiliary stationary contacts 321c of one auxiliary contact group respectively.

[0129] Preferred, such as Figure 18 and 19As shown in the figure, the third handle 31c comprises a third rotating part 311c pivotally arranged on the third module housing 30c, a third actuating part 310c connected with the first handle 11b for driving, and a third mounting part 312c connected with the movable contact 320c for driving; the third actuating part 310c and the third mounting part 312c are arranged on the circumferential side of the third rotating part 311c respectively. Further, as shown in the figure, Figure 19 As shown in the figure, one end of the third actuating part 310c is connected with the third rotating part 311c, and the other end is provided with a third clamping groove 3100c, in which the first handle 11b is clamped.

[0130] Preferably, as shown in the figure, Figure 18 As shown in the figure, the auxiliary movable contact 320c comprises an auxiliary movable contact bridge and an auxiliary movable contact point, the auxiliary movable contact bridge comprises an auxiliary movable contact bridge first part and an auxiliary movable contact bridge second part, one end of the auxiliary movable contact bridge second part is connected with the auxiliary movable contact bridge first part by bending, and the other end is provided with the auxiliary movable contact point; the third mounting part 312c comprises a contact clamping groove 3120c, the part of the third mounting part 312c on the side of the contact clamping groove 3120c constitutes a contact bridge limiting platform, the auxiliary movable contact bridge second part is clamped in the contact clamping groove 3120c, and the auxiliary movable contact bridge first part and the auxiliary movable contact bridge second part are respectively located on the two sides of the contact bridge limiting platform. Further, the connecting part of the auxiliary movable contact bridge first part and the auxiliary movable contact bridge second part is limited and matched with the third rotating part 311c. Preferably, the auxiliary movable contact 320c is integrally formed by bending a sheet-shaped elastic metal sheet into a V-shaped structure, the two side walls of the V-shaped structure are the auxiliary movable contact bridge first part and the auxiliary movable contact bridge second part respectively, and the auxiliary movable contact bridge first part is shorter than the auxiliary movable contact bridge second part.

[0131] Preferably, as shown in the figure, Figure 18 As shown in the figure, the third module housing 30c comprises a third guide rib, as shown in the figure, Figure 1 , 10 As shown in the figure, a guide groove is arranged on the side wall of the module slot 20, and the third guide rib is used in cooperation with the guide groove.

[0132] Preferably, as shown in the figure, Figure 1 , 10 As shown in the figure, the module slot 20 is a U-shaped slot.

[0133] As shown in the figure, Figure 3 -6, 21, it is the sixth embodiment of the leakage circuit breaker device of the application.

[0134] The leakage circuit breaker device of the embodiment further comprises a test button 13g, and the switch circuit of the leakage test circuit comprises a first switch S1 and a second switch S2, both of which are normally open switches and are driven by the operating mechanism 12b and the test button 13g respectively. When the operating mechanism 12b is driven to act by the first handle 11b to close the leakage circuit breaker 1, the operating mechanism 12b drives the first switch S1 to close. The second switch S2 is closed by pressing the test button 13g.

[0135] Preferably, as shown in Figure 3 The switch circuit comprises a first conductive part 10g, a second conductive part 11g and a third conductive part 12g, the second conductive part 11g is driven by the test button 13g, the second conductive part 11g and the first conductive part 10g constitute the second switch S2, the third conductive part 12g is driven by the operating mechanism 12b, and the third conductive part 12g and the first conductive part 10g constitute the first switch S1. Further, as shown in Figure 3 The second conductive part 11g and the third conductive part 12g are torsion springs, one end of each of the second conductive part 11g and the third conductive part 12g is fixedly arranged, and the other end of each of the second conductive part 11g and the third conductive part 12g is driven by the test button 13g and the operating mechanism 12b respectively. Further, the second conductive part 11g and the third conductive part 12g are respectively sleeved on the spring fixing shaft of the first partition plate 1c, and the first conductive part 10g is fixed on the first partition plate 1c.

[0136] Preferably, as shown in Figure 3 The third conductive part 12g is electrically connected to the incoming line end of the N-pole circuit at one end and is driven by the operating mechanism 12b at the other end. The leakage circuit breaker 1 further comprises a circuit breaker circuit board 12e, one end of the second conductive part 11g is connected to the circuit breaker circuit board 12e, and the other end is driven by the test button 13g. Further, the circuit breaker circuit board 12e and the N-pole circuit are located on the same side of the first partition plate 1c of the circuit breaker housing 1a.

[0137] Preferably, as shown in Figure 3 And 5 The operating mechanism 12b is driven by the driving link 10d of the N-pole circuit and the third conductive part 12g. Further, as shown in Figure 3 The third conductive part 12g is arranged on one side of the driving link 10d, and the third conductive part of the V-shaped structure of the third conductive part 12g is driven by the driving link 10d.

[0138] Preferably, as shown in Figure 6 The first conductive part 10g is an L-shaped conductive plate, comprising a first conductive part vertical part 100g and a first conductive part horizontal part 101g which are driven by the third conductive part 12g.Figure 6 As shown in the figure, the second conductive member 11g is a torsion spring, comprising a second conductive member body 110g, and a second conductive member horizontal arm 111g and a second conductive member vertical arm 112g connected to the second conductive member body 110g respectively, the second conductive member horizontal arm 111g is matched with the first conductive member horizontal part 101g, the second conductive member vertical arm 112g is in L-shaped structure, comprising a vertical arm vertical part 1120g and a vertical arm horizontal part 1121g, the vertical arm vertical part 1120g is connected to the second conductive member body 110g and the vertical arm horizontal part 1121g respectively, and the free end of the vertical arm horizontal part 1121g is connected to the circuit board 12e of the circuit breaker; as shown in the figure, Figure 6 As shown in the figure, the third conductive member 12g comprises a third conductive member body 120g, and a third conductive member connecting arm 121g and a third conductive member driven arm 123g connected to the third conductive member body 120g respectively, the free end of the third conductive member connecting arm 121g is connected to the incoming line end of the N-pole circuit, the third conductive member driven arm 123g is in V-shaped structure, one end of which is connected to the third conductive member body 120g, and the other end is matched with the first conductive member vertical part 100g, and the bending part of the V-shaped structure of the third conductive member driven arm 123g is matched with the driving connecting rod 10d for driving. Further, as shown in the figure, Figure 6 As shown in the figure, the third conductive member driven arm 123g comprises a driven arm first part 1231g, a driven arm second part 1232g and a driven arm third part 1233g connected in sequence, one end of the driven arm first part 1231g is connected to the third conductive member body 120g, the driven arm first part 1231g and the driven arm second part 1232g are connected in V-shaped structure by bending, and the driven arm third part 1233g is parallel to the first conductive member vertical part 100g when the driven arm third part 1233g is in contact with the first conductive member vertical part 100g.

[0139] The above is a further detailed description of the present application in combination with specific preferred embodiments, and the specific implementation of the present application cannot be limited to these descriptions. For ordinary skilled persons in the technical field to which the present application belongs, some simple deductions or substitutions can be made without departing from the concept of the present application, and all of them shall be regarded as falling within the protection scope of the present application.

Claims

1. A residual current circuit breaker device, characterized in that, It includes a residual current circuit breaker (1), a function expansion base (2), and a function expansion module (3) that is plugged into the function expansion base (2); the function expansion base (2) is located on one side of the residual current circuit breaker (1), and the function expansion base (2) includes a module slot (20), and the function expansion module (3) is inserted into the module slot (20); The leakage circuit breaker (1) is a two-phase circuit breaker, including an L-pole circuit and an N-pole circuit arranged side by side and spaced apart. The functional expansion base (2) includes a PE-pole circuit. The PE-pole circuit and the L-pole circuit are located on both sides of the N-pole circuit. The PE-pole circuit cooperates with the functional expansion module (3). The PE-pole circuit is electrically connected to the L-pole circuit and the N-pole circuit respectively. The PE electrode circuit includes a base power terminal (20b), which includes three elastic clip-type conductive elements: a grounding conductive element (200b), an L electrode conductive element (201b) connected to the L electrode circuit, and an N electrode conductive element (202b) connected to the N electrode circuit. The leakage circuit breaker (1) also includes a leakage test circuit, which includes a test resistor R connected in series between the L electrode circuit and the N electrode circuit and a switching circuit. The PE electrode circuit also includes a switching element (23b), which is connected in parallel with the switching circuit. When the functional expansion module (3) is a surge protection module or a shunt trip module (3a), the functional expansion module (3) and the switching element (23b) drive each other.

2. The residual current circuit breaker device according to claim 1, characterized in that: The residual current circuit breaker device also includes a guide structure for guiding and limiting the functional expansion module (3) during the insertion of the functional expansion module (3) into the module slot (20).

3. The residual current circuit breaker device according to claim 2, characterized in that: The guide structure includes a guide rib and a guide groove used in conjunction, one of which is set on the functional expansion base (2) and the other is set on the functional expansion module (3).

4. The residual current circuit breaker device according to claim 1, characterized in that: The functional expansion base (2) includes an elastic clip conductive element, and the functional expansion module (3) includes a module plug, which is plugged into the elastic clip conductive element.

5. The residual current circuit breaker device according to any one of claims 1-4, characterized in that: The functional expansion module (3) is inserted into the module slot (20) from a first direction or from a second direction, wherein the first direction and the second direction are perpendicular to each other.

6. The residual current circuit breaker device according to claim 5, characterized in that: the module slot (20) is a slot with a U-shaped structure, and the functional 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 residual current circuit breaker (1).

7. The residual current circuit breaker device according to claim 5, characterized in that: The module slot (20) is a right-angle slot, with the first direction opposite to one side wall of the right-angle slot and the second direction opposite to the other side wall of the right-angle slot.

8. The residual current circuit breaker device according to claim 1, characterized in that: The functional expansion 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 (3d).

9. The residual current circuit breaker device according to claim 1, characterized in that: The residual current circuit breaker (1) includes a circuit breaker housing (1a), the circuit breaker housing (1a) includes a first partition (1c) disposed in the middle of the housing, the first partition (1c) divides the circuit breaker housing (1a) into a first space and a second space, the L-pole circuit and the N-pole circuit are respectively located on both sides of the first partition (1c), the L-pole circuit is located in the first space, and the N-pole circuit is located in the second space; The functional expansion base (2) includes a second partition (2a) that cooperates with the circuit breaker housing (1a), an N-pole circuit is located between the first partition (1c) and the second partition (2a), and a PE-pole circuit and an N-pole circuit are respectively disposed on both sides of the second partition (2a).

10. The residual current circuit breaker device according to claim 9, characterized in that: The N-pole circuit includes a working N-pole moving contact (110d) and an N-pole stationary contact (111d). The circuit breaker housing (1a) includes an N-pole arc-extinguishing cavity. One end of the N-pole moving contact (110d) is inserted into the N-pole arc-extinguishing cavity and closes / opens with the N-pole stationary contact (111d) inside the N-pole arc-extinguishing cavity. The other end of the N-pole arc-extinguishing cavity is provided with an arc-cutting sidewall (212c). The arc-cutting sidewall (212c) is provided with a plurality of spaced arc-extinguishing holes. The circuit breaker housing (1a) also includes an exhaust hole (214c) that cooperates with the arc-cutting sidewall (212c).

11. The residual current circuit breaker device according to claim 9, characterized in that: The first partition (1c) has a plurality of parallel and spaced wire-laying ribs (10a) on the side facing the L-polar circuit, and the wires of the L-polar circuit are laid on the wire-laying ribs (10a).

12. The residual current circuit breaker device according to claim 1, characterized in that: The PE circuit also includes a base signal component (25b), through which external control signals are input to the function expansion module (3); the function expansion module (3) is a shunt trip module (3a) or an automatic reclosing module (3b).

13. The residual current circuit breaker device according to claim 1, characterized in that: The residual current circuit breaker (1) and the functional expansion base (2) are either an integrated structure or a detachable split structure.

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