CN210272238U - 2P electric leakage circuit breaker - Google Patents

Abstract

The utility model relates to a 2P electric leakage circuit breaker especially indicates the 2P electric leakage circuit breaker who has positive and negative wiring and electric leakage indication. The utility model adopts the following technical scheme: A2P residual current circuit breaker, its characterized in that: common one of first casing and second casing is served and is provided with first installation cavity, is provided with electric leakage release and current transformer in the first installation cavity, and current transformer is connected with electric leakage release electricity, two sides of the adjacent subsides of first casing and second casing are provided with the second installation cavity between first side and the second side promptly, are provided with electric leakage dropout indicating unit in the second installation cavity, and electric leakage dropout indicating unit is including electric leakage hasp, indicator and torsional spring, through adopting above-mentioned scheme, the utility model overcomes the deficiencies that prior art exists provide a simple structure, move reliably, have positive and negative wiring function and the neotype 2P electric leakage circuit breaker that the electric leakage instructed.

Description

2P electric leakage circuit breaker

Technical Field

The utility model relates to a 2P electric leakage circuit breaker especially indicates the 2P electric leakage circuit breaker who has positive and negative wiring and electric leakage indication.

Background

The existing 2P electric leakage circuit breaker has the functions of electric leakage tripping, overload tripping and short circuit tripping, but the wiring mode cannot be reversely connected, once the test circuit is reversely connected, the test circuit is electrified, the performance of a product is influenced, in addition, the electric leakage indication is not provided, so that the circuit breaker is not known to be disconnected due to any reason after being disconnected, and the trouble is brought to the maintenance.

Disclosure of Invention

The utility model overcomes prior art exists not enough, provides a simple structure, moves reliable, have positive and negative wiring function and electric leakage instruction's neotype 2P electric leakage circuit breaker.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a 2P electric leakage circuit breaker, including first casing, the second casing, be provided with first circuit breaker unit in the first casing, be provided with second circuit breaker unit in the second casing, first circuit breaker unit is including first moving contact, first static contact, first explosion chamber, first handle operating device and first release, second circuit breaker unit is including the second moving contact, the second static contact, the second explosion chamber, second handle operating device and second release, wherein first handle operating device's handle sets up with second handle operating device's handle linkage, first handle operating device's hasp sets up with second handle operating device's hasp linkage, be provided with the electricity device of getting of experimental return circuit and electric leakage circuit board in the first casing, its characterized in that: a first installation cavity is arranged at the common end of the first shell and the second shell, a leakage release and a current transformer are arranged in the first installation cavity, the current transformer is electrically connected with the leakage release, a second installation cavity is arranged between two side edges, namely a first side edge and a second side edge, of the adjacent paste of the first shell and the second shell, a leakage release indication unit is arranged in the second installation cavity and comprises a leakage lock catch, an indication piece and a torsional spring, the leakage lock catch is hinged in the second installation cavity through a first hinge shaft, the indication piece is hinged in the second installation cavity through a second hinge shaft, the torsional spring is sleeved on a second hinge shaft, the extension arm is abutted with the indication piece, the other extension arm is abutted with the leakage lock catch, and the upper end of the leakage lock catch is locked and matched with a locking boss of the indication piece when the circuit breaker is not subjected to leakage release or is subjected to artificial tripping, a through groove is arranged between the first side edge and the second side edge, the through groove penetrates through the first mounting cavity and the second mounting cavity, a leakage ejector rod is arranged in the through groove, the first end of the leakage ejector rod is fixed or integrally arranged with a movable iron core of a leakage release, the second end of the leakage ejector rod is matched with the lower end of the leakage lock catch, the leakage release moves, the leakage ejector rod pushes the leakage lock catch to swing, an indicating piece rotates under the action of a spring or a torsion spring to form leakage indication, a deflector rod is fixedly or integrally arranged on the lower end of the leakage lock catch or the second end of the leakage ejector rod, the deflector rod is matched with a lock catch abutting contact pin of the first handle operating mechanism or the second handle operating mechanism in an abutting mode, the leakage release moves to enable the leakage ejector rod to push the leakage lock catch to swing, meanwhile, the deflector rod also pushes the lock catch to abut against the pin to rotate to realize the, the reset deflector rod can push the indicator to rotate when the circuit breaker is switched on to realize indicator reset indication, the reset deflector rod is abutted on the indicator while the locking boss is abutted against the upper end of the electric leakage lock catch or the locking boss is abutted against the upper end of the electric leakage lock catch, a partition plate is arranged in the first shell and on one side of a moving contact mounting seat located on the first handle operating mechanism, a third mounting cavity is formed between the partition plate and one side wall of the first shell, and a power taking device of a test loop and an electric leakage circuit board is arranged in the third mounting cavity.

By adopting the scheme, the product has a simple structure and reasonable layout, and particularly, the leakage release and the current transformer are arranged by adopting the scheme, so that the volume of the product is not influenced, in addition, the product has a leakage indication function and a positive and negative wiring function, the function of the product is more comprehensive, and the specific expression is that the lower end of the leakage lock catch can be pushed to rotate by the leakage ejector rod when the leakage release of the product acts, at the moment, the leakage ejector rod pushes the lock catch to abut against the contact pin to rotate, and the indicating piece rotates under the action of the spring or the torsional spring to realize the leakage indication; in addition, when the circuit breaker is switched on, the reset deflector rod drives the indicator to rotate, so that the indicator is reset, the structure acts stably, and the electric leakage indicating function can be well realized; when the circuit breaker is in non-electric leakage tripping or artificial tripping, the upper end of the electric leakage lock catch is in interference fit with the locking boss of the indicating piece, so that electric leakage is indicated and electric leakage is not displayed, and an operator can clearly judge whether the electric leakage tripping or other reasons tripping is performed.

The utility model discloses a further setting is: the both sides in the first installation cavity are provided with the binding post that corresponds with first circuit breaker unit and second circuit breaker unit respectively, become the interval setting between two binding post, electric leakage release and current transformer have the part to arrange the interval department between two binding post in, the below of two binding post sets up the electric leakage circuit board.

Through adopting above-mentioned scheme, abundant utilization the space of first installation cavity, make the length of whole circuit breaker not increase like this, the volume is very compact, and the setting that electric leakage release and current transformer are very reasonable is inside the circuit breaker.

The utility model discloses a further setting is: the electricity taking device of the test loop and the leakage circuit board comprises a button, a first conductive ring, a second conductive ring, a first electricity taking torsion spring and a second electricity taking torsion spring, wherein the first conductive ring and the second conductive ring are respectively arranged on a first mounting column and a second mounting column of a first shell, the first electricity taking torsion spring is sleeved on a third mounting column of the first shell, a first extension arm of the first electricity taking torsion spring is abutted against the second conductive ring to realize electric connection, a second extension arm of the first electricity taking torsion spring is arranged below the button and is correspondingly arranged with the first conductive ring, the second extension arm of the first electricity taking torsion spring is abutted against the first conductive ring to realize electric connection by pressing the button, the second electricity taking torsion spring is arranged on a fourth mounting column of the first shell, the first extension arm of the second electricity taking torsion spring is electrically connected with a first moving contact, a deflector rod is arranged on a moving contact mounting seat of the first handle operating mechanism, the driving lever and the second extension arm of the second electricity-taking torsion spring are correspondingly arranged, when the circuit breaker is switched on, the second extension arm of the second electricity-taking torsion spring is in contact with the second conductive ring to realize electric connection, and when the circuit breaker is disconnected, the driving lever drives the second extension arm of the second electricity-taking torsion spring to rotate to form a separation of the second extension arm and the second conductive ring.

Through adopting above-mentioned scheme, the inlet wire end of circuit breaker and the wiring of leading-out terminal can be unrestricted, when the concrete expression is the circuit breaker combined floodgate, the second extension arm of second electricity-taking torsional spring and the electrically conductive circle contact realization electricity of second are connected, press the button like this, just can get from the driven contact and electrically circle first electrically conductive, test the circuit breaker, when the circuit breaker disconnection, the driving lever drives the second extension arm of second electricity-taking torsional spring and rotates and constitute the second extension arm and separate with the electrically conductive circle of second, press the button like this, test circuit does not have the electricity all the time, and is very safe, reliable to whether electrified with the moving contact has nothing to do with, any positive and negative grafting is very safe.

The utility model discloses a last setting is: the indicating piece is characterized in that a limiting boss for limiting the rotation angle of the indicating piece is arranged in the second mounting cavity, a notch is arranged in the second mounting cavity, the inner wall of the notch is matched with the lower end of the electric leakage lock catch to limit the rotation stroke of the electric leakage lock catch, the second end of the electric leakage ejector rod is arranged in a bent mode, the bent portion of the electric leakage ejector rod forms a driving lever, the driving lever is matched with the lock catch abutting foot of the first handle operating mechanism, the lock catch abutting foot of the first handle operating mechanism can be pushed to rotate to achieve disconnection of the circuit breaker, an abutting edge is arranged on the indicating piece, and the reset driving lever of the second handle operating mechanism can push the indicating piece to rotate to achieve that the locking boss on the indicating piece.

Through adopting above-mentioned scheme, simple structure, wherein the driving lever adopts above-mentioned scheme setting can conveniently promote first handle operating device or second handle operating device's hasp to touch the foot and rotate and realize the circuit breaker disconnection, and the conflict limit on the indicator sets up and can realize that the indicator resets, specifically resets the driving lever and promotes the conflict limit and realize that the indicator rotates, and of course we can set up other parts such as lug, protruding muscle, connecting rod and the cooperation of driving lever that resets and realize resetting.

The present invention will be further described with reference to the following specific embodiments.

Drawings

Fig. 1 is a perspective view of an embodiment of the present invention;

fig. 2 is a structural view reflecting a second circuit breaker unit according to an embodiment of the present invention;

fig. 3 is a structural diagram reflecting the first circuit breaker unit according to the embodiment of the present invention;

fig. 4 is a structural diagram of an indicating unit for indicating leakage and tripping after the circuit breaker is switched on;

fig. 5 is a structural diagram of the leakage trip indicating unit after the leakage trip of the embodiment of the present invention;

FIG. 6 is a diagram showing the matching between the reset lever and the abutting edge according to the embodiment of the present invention;

fig. 7 is a perspective view of an indicator according to an embodiment of the present invention;

fig. 8 is a perspective view of a second breaker unit movable contact mounting base in accordance with an embodiment of the present invention;

fig. 9 is a diagram showing the structure of the leakage ejector pin cooperating with the latch contact pin and the leakage latch of the first circuit breaker unit according to the embodiment of the present invention;

fig. 10 is a structural diagram of an embodiment of the present invention reflecting a leakage tripping indicating unit of a circuit breaker after non-leakage tripping;

fig. 11 is a diagram showing the locking of the shift lever and the first circuit breaker unit according to the embodiment of the present invention.

Fig. 12 is a cross-sectional view of an embodiment of the present invention;

fig. 13 is a diagram of an embodiment of the present invention reflecting a first side;

fig. 14 is a diagram of an embodiment of the present invention reflecting a second side;

FIG. 15 is a structural diagram of a power-taking device of an embodiment of the present invention;

FIG. 16 is a perspective view of a partition plate according to an embodiment of the present invention;

FIG. 17 is a diagram showing the fitting of the button and the positioning block according to the embodiment of the present invention;

fig. 18 is a structural diagram of a test loop power-taking device in closing of the circuit breaker according to the embodiment of the present invention;

fig. 19 is a structural diagram of the test circuit electricity-taking device in the opening of the circuit breaker of the embodiment of the present invention;

fig. 20 is a structural view of a movable contact mounting seat of a first handle operating mechanism according to an embodiment of the present invention;

fig. 21 is a front view structural diagram reflecting the wiring terminal, the leakage release and the current transformer of the embodiment of the present invention;

fig. 22 is a side view showing the connection terminals, the leakage release and the current transformer according to the embodiment of the present invention.

Detailed Description

As shown in fig. 1-22, a 2P residual current circuit breaker includes a first housing 11, a second housing 12, a first breaker unit a disposed in the first housing 11, and a second breaker unit B disposed in the second housing 12, the first breaker unit including a first moving contact, a first fixed contact, a first arc-extinguishing chamber, a first handle operating mechanism and a first release, the second breaker unit including a second moving contact, a second fixed contact, a second arc-extinguishing chamber, a second handle operating mechanism and a second release, wherein a handle of the first handle operating mechanism is linked with a handle of the second handle operating mechanism, a latch of the first handle operating mechanism is linked with a latch of the second handle operating mechanism, a test loop power-taking device is disposed in the first housing, and the above technical characteristics are also existed in the prior art, so they are not described in detail in this embodiment, in the embodiment of the present invention, a first mounting cavity 112 is disposed on a common end of the first housing 11 and the second housing 12, a leakage release 1121 and a current transformer 1122 are disposed in the first mounting cavity 112, the current transformer 1122 is electrically connected to the leakage release 1122, a second mounting cavity 123 is disposed between two side edges, i.e., a first side edge 111 and a second side edge 121, of the adjacent first housing 11 and the second housing 12, a leakage release indicating unit 2 is disposed in the second mounting cavity 123, the leakage release indicating unit 2 includes a leakage lock 21, an indicating member 22 and a torsion spring 23, of course, a hole for exposing an indicating surface of the indicating member 22 is disposed on the first housing 11 or the second housing 12, the leakage lock 21 is hinged in the second mounting cavity 123 through a first hinge shaft 211, the indicating member 22 is hinged in the second mounting cavity 123 through a second hinge shaft 221, the torsion spring 23 is sleeved on the second hinge shaft 221 and the extension arm is abutted against the indicating member 22, the other extension arm is abutted against the leakage lock catch 21, the upper end of the leakage lock catch 21 is locked and matched with the locking boss 222 of the indicating piece 22 when the leakage is not tripped or the brake is opened manually, a through groove 13 is arranged between the first side edge 111 and the second side edge 121, the through groove 13 penetrates through the first installation cavity 113 and the second installation cavity 123, a leakage ejector rod 24 is arranged in the through groove 13, the first end of the leakage ejector rod 24 is fixed or integrally arranged with the movable iron core of the leakage release 1122, the second end of the leakage ejector rod 24 is matched with the lower end of the leakage lock catch 21, when the circuit breaker is tripped, the leakage release 1121 moves, the leakage ejector rod 24 pushes the leakage lock catch 21 to swing, the indicating piece 22 rotates under the action of the torsion spring 23 to form leakage indication, a shift lever 241 is fixedly or integrally arranged on the lower end of the leakage lock catch 21 or the second end of the leakage ejector rod 24, and the shift lever, the movement of the electrical leakage release 1121 makes the electrical leakage ejector rod 24 push the electrical leakage lock catch 21 to swing, and at the same time, the shift lever 241 also pushes the lock catch to abut against the pin a2 to rotate so as to realize the disconnection of the 2P electrical leakage breaker, a moving contact mounting seat B1 of the second handle operating mechanism B is fixedly provided with a reset deflector rod B11, when the circuit breaker is switched on, the reset deflector rod B11 can push the indicator 22 to rotate so as to realize the reset indication of the indicator 22, after the circuit breaker is switched on, the reset deflector rod B11 is in interference fit with the indicator 22, at the moment, the upper end of the electric leakage lock catch 21 is in interference fit with the locking lug boss 222 of the indicator 22 or the upper end of the electric leakage lock catch 21 and the locking lug boss 222 of the indicator 22 exceed the interference fit position, a partition plate 5 is arranged in the first shell 11 and at one side of a movable contact mounting seat A1 of the first handle operating mechanism A, a third installation cavity 113 is formed between the partition plate 5 and one side wall of the first shell 11, and a test loop power taking device 3 is arranged in the third installation cavity 113. By adopting the scheme, the product has a simple structure and reasonable layout, and particularly, the leakage tripping device 1121 and the current transformer 1122 are arranged by adopting the scheme, so that the volume of the product is not influenced, in addition, the product has a leakage indicating function and a positive and negative wiring function, so that the function of the product is comprehensive, specifically, when the leakage tripping device 1121 of the product acts, the lower end of the leakage lock catch 21 can be pushed to rotate through the leakage ejector rod 24, at the moment, the leakage ejector rod 24 pushes the lock catch to abut against the contact pin A2 to rotate, the indicating piece 22 rotates under the action of the spring or the torsion spring 23, and meanwhile, the upper end of the leakage lock catch 21 cannot abut against the locking boss 222 of the indicating piece 22, so that leakage indication; in addition, when the circuit breaker is to be switched on, namely in the switching-on process, the reset deflector rod B11 drives the indicator 22 to rotate, so that the indicator 22 is reset; the indicator 22 is reset and is abutted by the reset deflector rod B11, the structure acts stably, and the electric leakage indicating function can be well realized; when the circuit breaker is in non-leakage tripping or artificial tripping, the upper end of the leakage lock catch 21 is in interference fit with the locking boss 222 of the indicating piece 22, so that the leakage indication does not display leakage, an operator can clearly judge whether the leakage tripping or other reasons tripping is performed, the purpose of the arrangement is that the indicating piece is well guaranteed to display when the leakage tripping is performed, and the leakage is not displayed in other situations, so that the working stability is guaranteed.

The embodiment of the utility model provides an in, both sides in first installation cavity 112 are provided with the binding post C that corresponds with first circuit breaker unit A and second circuit breaker unit B respectively, become the interval setting between two binding post C, electric leakage release 1121 and current transformer 1122 have the part to arrange the interval department between two binding post C in, two binding post C's below sets up electric leakage circuit board D. By adopting the above scheme, the space of the first installation cavity 112 is fully utilized, so that the length of the whole circuit breaker is not increased, the size is very compact, and the leakage tripping device 1121 and the current transformer 1122 are reasonably arranged inside the circuit breaker.

In the embodiment of the present invention, the electricity-taking device 3 for the testing loop and the leakage circuit board comprises a button 31, a first conductive ring 32, a second conductive ring 33, a first electricity-taking torsion spring 34 and a second electricity-taking torsion spring 35, wherein the first conductive ring 32 and the second conductive ring 33 are respectively disposed on the first mounting post 114 and the second mounting post 115 of the first housing 11, the first electricity-taking torsion spring 34 is sleeved on the third mounting post 116 of the first housing 11, the first extension arm 341 of the first electricity-taking torsion spring 34 is abutted against the second conductive ring 33 to realize electrical connection, the second extension arm 342 of the first electricity-taking torsion spring 34 is disposed under the button 31 and is disposed corresponding to the first conductive ring 32, the button 31 is pressed to realize the abutting of the second extension arm 342 of the first electricity-taking torsion spring 34 against the first conductive ring 32 to realize electrical connection, the second electricity-taking torsion spring 35 is disposed on the fourth mounting post 117 of the first housing 11, the first extension arm 351 of the second electricity-taking torsion spring 35 is electrically connected with the first moving contact, the moving contact mounting seat a1 of the first handle operating mechanism is provided with a shift lever a11, the shift lever a11 is arranged corresponding to the second extension arm 352 of the second electricity-taking torsion spring 35, when the circuit breaker is switched on, the second extension arm 352 of the second electricity-taking torsion spring 35 is in contact with the second conductive ring 33 to realize electrical connection, and when the circuit breaker is switched off, the shift lever a11 drives the second extension arm 352 of the second electricity-taking torsion spring 35 to rotate to form a second extension arm 352 separated from the second conductive ring 33; adopt above-mentioned scheme, the inlet wire end of circuit breaker and the wiring of outlet terminal can be unrestricted, when the concrete expression is the circuit breaker combined floodgate, the second extension arm 352 of second electricity torsional spring 35 and the contact of second conductive ring 33 realize the electricity to be connected, press button 31 like this, just can get on first conductive ring 32 from the driven contact, test the circuit breaker, when the circuit breaker disconnection, driving lever A11 drives the second extension arm 352 of second electricity torsional spring 35 and rotates and constitute second extension arm 352 and the separation of second conductive ring 33, press button 31 like this, test circuit does not have the electricity all the time, and is very safe, reliable, and whether electrified irrelevance with the moving contact, any positive reversal is all very safe.

The utility model discloses a last setting is: a limiting boss 1231 for limiting the rotation angle of the indicating member is arranged in the second mounting cavity 123, a notch 1232 is arranged in the second mounting cavity 123, the inner wall of the notch 12321 is matched with the lower end of the leakage lock catch 21 to limit the rotation stroke of the leakage lock catch 21, the second end of the leakage ejector rod 24 is bent, the bending part forms a shift lever 241, the shift lever 241 is matched with a lock catch contact pin A1 of the first handle operating mechanism A, the lock catch contact pin A1 of the first handle operating mechanism A can be pushed to rotate to realize the disconnection of the circuit breaker, the indicating piece 22 is provided with an interference edge 223, a reset deflector rod B11 on a moving contact mounting seat B1 of the second handle operating mechanism B can push an abutting edge 223 on the indicator 22 to rotate so as to realize that a locking boss 222 on the indicator 22 abuts against the upper end of the leakage lock catch 21 to realize the reset indication of the indicator 22, and the process from opening to closing of the circuit breaker is also realized; through adopting above-mentioned scheme, simple structure, wherein driving lever 241 adopts above-mentioned scheme to set up and can conveniently promote first handle operating device A hasp and touch foot A1 and rotate and realize the circuit breaker disconnection, conflict limit 223 on the indicator 22 sets up and can realize that the indicator 22 resets, resets specifically that driving lever B11 promotes conflict limit 223 and realizes that the indicator 22 rotates, and certainly we can also set up other parts such as lug, protruding muscle, connecting rod and the cooperation of driving lever B11 that resets and realize resetting.

Claims (5)

1. The utility model provides a 2P electric leakage circuit breaker, including first casing, the second casing, be provided with first circuit breaker unit in the first casing, be provided with second circuit breaker unit in the second casing, first circuit breaker unit is including first moving contact, first static contact, first explosion chamber, first handle operating device and first release, second circuit breaker unit is including the second moving contact, the second static contact, the second explosion chamber, second handle operating device and second release, wherein first handle operating device's handle sets up with second handle operating device's handle linkage, first handle operating device's hasp sets up with second handle operating device's hasp linkage, be provided with the electricity device of getting of experimental return circuit and electric leakage circuit board in the first casing, its characterized in that: a first installation cavity is arranged at the common end of the first shell and the second shell, a leakage release and a current transformer are arranged in the first installation cavity, the current transformer is electrically connected with the leakage release, a second installation cavity is arranged between two side edges, namely a first side edge and a second side edge, of the adjacent paste of the first shell and the second shell, a leakage release indication unit is arranged in the second installation cavity and comprises a leakage lock catch, an indication piece and a torsional spring, the leakage lock catch is hinged in the second installation cavity through a first hinge shaft, the indication piece is hinged in the second installation cavity through a second hinge shaft, the torsional spring is sleeved on a second hinge shaft, the extension arm is abutted with the indication piece, the other extension arm is abutted with the leakage lock catch, and the upper end of the leakage lock catch is locked and matched with a locking boss of the indication piece when the circuit breaker is not subjected to leakage release or is subjected to artificial tripping, a through groove is arranged between the first side edge and the second side edge, the through groove penetrates through the first mounting cavity and the second mounting cavity, a leakage ejector rod is arranged in the through groove, the first end of the leakage ejector rod is fixed or integrally arranged with a movable iron core of a leakage release, the second end of the leakage ejector rod is matched with the lower end of the leakage lock catch, the leakage release moves, the leakage ejector rod pushes the leakage lock catch to swing, an indicating piece rotates under the action of a spring or a torsion spring to form leakage indication, a deflector rod is fixedly or integrally arranged on the lower end of the leakage lock catch or the second end of the leakage ejector rod, the deflector rod is matched with a lock catch abutting contact pin of the first handle operating mechanism or the second handle operating mechanism in an abutting mode, the leakage release moves to enable the leakage ejector rod to push the leakage lock catch to swing, meanwhile, the deflector rod also pushes the lock catch to abut against the pin to rotate to realize the, the reset deflector rod can push the indicator to rotate when the circuit breaker is switched on to realize indicator reset indication, the reset deflector rod is abutted on the indicator while the locking boss is abutted against the upper end of the electric leakage lock catch or the locking boss is abutted against the upper end of the electric leakage lock catch, a partition plate is arranged in the first shell and on one side of a moving contact mounting seat located on the first handle operating mechanism, a third mounting cavity is formed between the partition plate and one side wall of the first shell, and a power taking device of a test loop and an electric leakage circuit board is arranged in the third mounting cavity.

2. 2P residual current circuit breaker according to claim 1, characterized in that: the both sides in the first installation cavity are provided with the binding post that corresponds with first circuit breaker unit and second circuit breaker unit respectively, become the interval setting between two binding post, electric leakage release and current transformer have the part to arrange the interval department between two binding post in, the below of two binding post sets up the electric leakage circuit board.

3. 2P residual current circuit breaker according to claim 1 or 2, characterized in that: the electricity taking device of the test loop and the leakage circuit board comprises a button, a first conductive ring, a second conductive ring, a first electricity taking torsion spring and a second electricity taking torsion spring, wherein the first conductive ring and the second conductive ring are respectively arranged on a first mounting column and a second mounting column of a first shell, the first electricity taking torsion spring is sleeved on a third mounting column of the first shell, a first extension arm of the first electricity taking torsion spring is abutted against the second conductive ring to realize electric connection, a second extension arm of the first electricity taking torsion spring is arranged below the button and is correspondingly arranged with the first conductive ring, the second extension arm of the first electricity taking torsion spring is abutted against the first conductive ring to realize electric connection by pressing the button, the second electricity taking torsion spring is arranged on a fourth mounting column of the first shell, the first extension arm of the second electricity taking torsion spring is electrically connected with a first moving contact, a deflector rod is arranged on a moving contact mounting seat of the first handle operating mechanism, the driving lever and the second extension arm of the second electricity-taking torsion spring are correspondingly arranged, when the circuit breaker is switched on, the second extension arm of the second electricity-taking torsion spring is in contact with the second conductive ring to realize electric connection, and when the circuit breaker is disconnected, the driving lever drives the second extension arm of the second electricity-taking torsion spring to rotate to form a separation of the second extension arm and the second conductive ring.

4. 2P residual current circuit breaker according to claim 1 or 2, characterized in that: the indicating piece is characterized in that a limiting boss for limiting the rotation angle of the indicating piece is arranged in the second mounting cavity, a notch is arranged in the second mounting cavity, the inner wall of the notch is matched with the lower end of the electric leakage lock catch to limit the rotation stroke of the electric leakage lock catch, the second end of the electric leakage ejector rod is arranged in a bent mode, the bent portion of the electric leakage ejector rod forms a driving lever, the driving lever is matched with the lock catch abutting foot of the first handle operating mechanism, the lock catch abutting foot of the first handle operating mechanism can be pushed to rotate to realize the disconnection of the circuit breaker, an abutting edge is arranged on the indicating piece, and the reset driving lever on the moving contact mounting seat of the second handle operating mechanism can push the abutting edge to rotate to realize the abutting of the.

5. A 2P residual current circuit breaker according to claim 3, characterized in that: the indicating piece is characterized in that a limiting boss for limiting the rotation angle of the indicating piece is arranged in the second mounting cavity, a notch is arranged in the second mounting cavity, the inner wall of the notch is matched with the lower end of the electric leakage lock catch to limit the rotation stroke of the electric leakage lock catch, the second end of the electric leakage ejector rod is arranged in a bent mode, the bent portion of the electric leakage ejector rod forms a driving lever, the driving lever is matched with the lock catch abutting foot of the first handle operating mechanism, the lock catch abutting foot of the first handle operating mechanism can be pushed to rotate to realize the disconnection of the circuit breaker, an abutting edge is arranged on the indicating piece, and the reset driving lever on the moving contact mounting seat of the second handle operating mechanism can push the abutting edge to rotate to realize the abutting of the.

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