An electronic molded case circuit breaker

Abstract

The present invention provides an electronic molded case circuit breaker, comprising: a circuit breaker housing, comprising a base, an upper cover and a middle cover arranged above the base; a backup protection device is arranged inside the circuit breaker housing, comprising: a sensing module arranged in the base; a plurality of static iron cores arranged at intervals on the sensing module; a traction rod assembly, comprising a traction rod, and a moving iron core arranged on the traction rod and corresponding to the plurality of static iron cores; an operating mechanism capable of being linked with a release; a transmission rod assembly, one end of which is linked with the traction rod and the other end of which is linked with the operating mechanism. The molded case circuit breaker overcomes the defects of a large number of parts of a backup protection release in the prior art and complicated assembly work.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to an electronic molded case circuit breaker. Background Art

[0002] The backup protection device of the molded case circuit breaker can drive the release to operate in the event of overload, short circuit and other faults to cut off the circuit, thereby protecting electrical equipment and personnel safety.

[0003] In the utility model patent with patent announcement number CN219226180U, an electronic circuit breaker backup protection structure is disclosed, including a base, a traction rod and three-phase partition slots A, B, and C arranged in sequence on the base, and backup protection releasers are respectively installed in the three-phase partition slots A, B, and C. Each backup protection releaser includes a yoke, a movable armature, a U-shaped bracket, a spring structure and a trigger structure. During the assembly of the backup protector releaser, the lower end of the U-shaped bracket is connected to the yoke, and the movable armature is hinged to the upper end of the U-shaped bracket through a pin shaft. The spring structure is sleeved on the pin shaft, and its two ends extend to abut the movable armature and the U-shaped bracket respectively. After the assembly is completed, the yoke is fixed to the conductive plate of the base by screws. The above-mentioned backup protection releaser has a large number of parts and components, and the assembly process is relatively cumbersome. In addition, there are three backup protection releasers, which further increases the production cost. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the backup protection release in the prior art that the number of parts is large and the assembly work is complicated, thereby providing an electronic molded case circuit breaker that is easy to install.

[0005] To this end, the present invention provides an electronic molded case circuit breaker, comprising: a circuit breaker housing, comprising a base, an upper cover and a middle cover arranged above the base; a backup protection device, arranged inside the circuit breaker housing, comprising: an induction module, arranged inside the base;

[0006] A plurality of static iron cores are arranged at intervals on the sensing module; a traction rod assembly includes a traction rod and a moving iron core arranged on the traction rod and corresponding to the plurality of static iron cores; an operating mechanism capable of being linked with a release; and a transmission rod assembly, one end of which is linked with the traction rod and the other end is linked with the operating mechanism.

[0007] Further: the transmission rod assembly includes a traction shaft, the operating mechanism includes an operating rod and an extension rod located on the operating rod, the operating rod is provided with a first extension block that can contact the upper end of the traction shaft, the traction rod is provided with a second extension block that contacts the lower end of the traction shaft, one end of the traction shaft is linked to the first extension block, and the other end is linked to the second extension block, the operating rod is arranged parallel to the traction rod and the traction shaft is arranged vertically therebetween, and the outside of the traction shaft is provided with a protrusion for assisting the vertical movement of the traction shaft.

[0008] Further: the sensing module also includes a sensing shell, the protrusion is arranged on the base or the sensing shell, the protrusion is provided with a slot for the traction shaft to pass through, the traction rod is provided with an abutment plate, the abutment plate can abut against the base, the traction rod has a first position when the moving iron core is in a short-circuit state and a second position when the moving iron core is in a normal state; when the traction rod is in the second position, the abutment plate abuts against the base.

[0009] Further: a controller module is arranged above the sensing shell, the controller module includes a controller cover box, a snap-on structure is arranged between the controller cover box and the sensing shell, the snap-on structure includes a main plug-in and an auxiliary plug-in for assisting the main plug-in to be plugged in.

[0010] Further: the main plug-in includes a guide groove arranged on one side of the sensing shell or the controller cover box, and a guide strip arranged on the other side and capable of being inserted into the guide groove, the guide strip is provided with a snap-on block, the snap-on block abuts against the end face of the guide groove, the auxiliary plug-in includes an auxiliary insert strip and an auxiliary slot, and the controller cover box is also provided with an abutment block abutting against the auxiliary insert strip.

[0011] Further: the controller module also includes a circuit board arranged inside the controller cover box, an adapter board is arranged below the circuit board, the adapter board is located above the induction shell, a transformer socket is arranged on the adapter board, and a wire groove for connecting the transformer socket wires is opened at the controller cover box.

[0012] Furthermore: the induction housing is provided with a wire management groove for inserting the adapter board wires and connecting with the transformer module.

[0013] Further: the induction shell includes a bottom shell and a cover plate buckled with the bottom shell, at least two induction coils are arranged inside the bottom shell, a positioning block for positioning the induction coil is arranged on the bottom shell, a partition is arranged between adjacent induction coils, the partition is arranged on the bottom shell, and a convex rib abutting against the end face of the induction coil is arranged on the cover plate, and a plug-in structure is formed between the convex rib and the partition.

[0014] Further: it also includes an arc extinguishing chamber and a contact mechanism arranged on the side of the arc extinguishing chamber, the controller module is arranged on the side of the contact mechanism, and the entrance of the controller module is provided with at least one pair of plug-in structures for preventing the airflow generated when the contact mechanism is disconnected from entering the controller module.

[0015] Furthermore: a plurality of pairs of first plug-in structures are formed between the middle cover and the controller cover box, and the plurality of pairs of first plug-in structures are extended along the outer shell direction of the controller cover box, and a second plug-in structure for preventing airflow from entering the circuit board is formed between the middle cover and the upper cover.

[0016] The technical solution of the present invention has the following advantages:

[0017] 1. When assembling the electronic molded case circuit breaker provided by the present invention, a plurality of static iron cores are first installed on the induction module in sequence, the static iron core and the induction module are completely installed into the base, and then turned over to fix the operating mechanism, and then the transmission assembly is fixed on the base, and then a plurality of moving iron cores are installed on the same traction rod to form a traction rod assembly. After the traction rod assembly is installed, the installation of the backup protection structure is completed. Compared with the prior art, the number of parts is small, the assembly process is relatively simple, and the production cost is greatly reduced.

[0018] 2. In the electronic molded case circuit breaker provided by the present invention, when the magnetic field between the moving iron core and the stationary iron core is enhanced, the moving iron core will rotate and engage with the stationary iron core, the traction rod will rotate, and the second extension block will push the traction shaft to move upward, and the upper position of the traction shaft will hit the first extension block, thereby driving the operating rod to rotate, driving the operating mechanism to move, and finally causing the releaser to trip.

[0019] 3. The electronic molded case circuit breaker provided by the present invention has a positioning block on the induction housing or the base to assist the movement of the traction shaft, and a slot for the traction shaft to pass through is provided in the positioning block. When the moving iron core switches from the second position to the first position, the traction shaft moves upward, thereby driving the operating mechanism to move and causing the releaser to trip. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the position structure of the backup protection device in a normal state;

[0022] Figure 2 It is the overall structural cross-section diagram of the circuit breaker;

[0023] Figure 3 It is a structural schematic diagram of another implementation mode of the backup protection device;

[0024] Figure 4 It is a schematic diagram of the position structure of the backup protection device in a short-circuit state;

[0025] Figure 5 It is a schematic diagram of the connection structure between the sensing module and the controller cover box;

[0026] Figure 6 It is a schematic diagram of the connection structure between the sensing module and the adapter board;

[0027] Figure 7 is a schematic diagram of the cross-sectional structure of the sensing module;

[0028] Figure 8 for Figure 5 Enlarged view of part A in the middle;

[0029] Fig. 9 This is a cross-sectional diagram of the internal structure of the circuit breaker;

[0030] Fig.10 for Figure 7 Enlarged view of part B in the middle.

[0031] Description of reference numerals:

[0032] 1. Circuit breaker housing; 10. Static iron core; 100. Anti-drop gasket; 11. Base; 12. Upper cover; 13. Middle cover; 2. Induction module; 201. Induction housing; 2011. Bottom shell; 2022. Cover plate; 202. Protrusion; 203. Slot; 221. Drawbar; 222. Moving iron core; 25. Stop pin; 3. Transmission rod assembly; 31. Drawbar shaft; 310. Anti-drop block; 311. Second extension block; 30. Operating mechanism; 301. Extension rod; 32. Operating rod; 321. First extension Extension block; 33, partition extension plate; 4, controller cover box; 41, main plug-in; 411, guide groove; 412, guide strip; 42, auxiliary plug-in; 421, auxiliary plug strip; 422, auxiliary slot; 44, snap-on block; 46, abutment block; 47, adapter plate; 48, transformer female socket; 49, wire trough; 5, wire management trough; 6, induction coil; 61, positioning block; 62, partition; 63, convex rib; 7, arc extinguishing chamber; 71, contact mechanism; 731, abutment plate; 8, first pair of plug-in structures; 9, second pair of plug-in structures. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0037] Example

[0038] The present embodiment provides an electronic molded case circuit breaker, comprising: a circuit breaker housing 1, comprising a base 11, an upper cover 12 and a middle cover 13 arranged above the base 11; a backup protection device, arranged inside the circuit breaker housing 1, comprising: a sensing module 2, arranged in the base 11; a plurality of static iron cores 10, arranged at intervals on the sensing module 2; a traction rod assembly, comprising a traction rod 221, and a moving iron core 222 arranged on the traction rod 221 and corresponding to the plurality of static iron cores 10; an operating mechanism 30, which can be linked with a release; a transmission rod assembly 3, one end of which is linked with the traction rod 221, and the other end of which is linked with the operating mechanism 30.

[0039] The above specific improvements are: Figure 1-Figure 4As shown, compared with the prior art, during assembly, multiple static iron cores are first installed on the sensing module in sequence, the static iron core and the sensing module are completely loaded into the base, and then turned over to fix the operating mechanism, and then the transmission assembly is fixed on the base, and then multiple moving iron cores are installed on the same traction rod to form a traction rod assembly. After the traction rod assembly is installed, the installation of the backup protection structure is completed. Compared with the prior art, the number of parts is small, the assembly process is relatively simple, and the production cost is greatly reduced. The installation scheme can be further optimized. The static iron core 10 is connected to the anti-slip gasket 100, and the anti-slip gasket 100 is clamped between the insert nut and the machine screw to fix the position of the static iron core 10. A partition extension plate 33 for separating the two is arranged between adjacent static iron cores 10. The partition extension plate 33 extends from the sensing shell 201, and the base has extension ribs wrapped on both sides of the partition extension plate 33. The two extension ribs and the partition extension plate 33 form a plug-in structure, which can effectively increase the creepage distance between the two static iron cores 10 and improve the safety of the product.

[0040] On the basis of the above embodiment: the transmission rod assembly 3 includes a traction shaft 31, the operating mechanism 30 includes an operating rod 32 and an extension rod 301 located on the operating rod 32, the operating rod 32 is provided with a first extension block 321 that can contact the upper end of the traction shaft 31, the traction rod 221 is provided with a second extension block 311 that contacts the lower end of the traction shaft 31, one end of the traction shaft 31 is linked to the first extension block 321, and the other end is linked to the second extension block 311, the operating rod 32 is arranged parallel to the traction rod 221 and the traction shaft 31 is vertically arranged therebetween, and the outer sleeve of the traction shaft 31 is provided with a protrusion 202 for assisting the vertical movement of the traction shaft 31.

[0041] The above specific improvements are: Figure 3 and Figure 4 As shown, when the magnetic force between the moving iron core 222 and the static iron core 10 is enhanced, the moving iron core 222 will rotate and be attracted to the static iron core 10, the traction rod 221 will rotate, and the second extension block 311 on the traction rod 221 will slap the traction shaft 31, so that the second extension block 311 will push the traction shaft 31 to move upward, and the upper position of the traction shaft 31 will hit the first extension block 321, thereby driving the operating rod 32 to rotate, and the operating rod 32 will drive the extension rod 301 to rotate, thereby driving the releaser to release (the structure of the releaser is the prior art and is common knowledge known to technicians in the field, and will not be described in detail here). By setting the linkage relationship among the traction rod 221, the traction shaft 31 and the operating rod 32, the action of the operating mechanism 30 can be realized with relatively less space and material, driving the releaser to release, and by setting the protrusion 202, the horizontal movement of the traction shaft 31 can be limited.

[0042] On the basis of the above embodiment: the sensing module 2 also includes a sensing shell 201, the protrusion 202 is arranged on the base 11 or the sensing shell 201, the protrusion 202 is provided with a through slot 203 for the traction shaft 31 to pass through, the traction rod 221 is provided with an abutment plate 731, the abutment plate 731 can abut against the base 11, the traction rod 221 has a first position in which the moving iron core 222 is in a short-circuit state and a second position in which the moving iron core 222 is in a normal state; when the traction rod 221 is in the second position, the abutment plate 731 abuts against the base 11.

[0043] The above specific improvements are:

[0044] Embodiment 1:

[0045] like Figure 1 As shown, the sensing module 2 also includes a sensing shell 201, a protrusion 202 is arranged on the sensing module 2, a through slot 203 is opened on the protrusion 202, the traction shaft 31 passes through the through slot 203 to ensure that the traction shaft 31 can move vertically up and down, the traction rod 221 has a first position in which the moving iron core 222 is in a short-circuit state and a second position in which the moving iron core 222 is in a normal state. When the traction shaft 31 switches back to the normal state from the short-circuit state, the lower end surface of the limit pin 25 will contact the upper end surface of the protrusion 202, thereby preventing the traction shaft 31 from continuing to fall downward, so that the limit pin 25 can always be inserted into the through slot 203. In order to prevent the traction shaft 31 from passing through the through slot 203 when moving upward, an anti-falling block 310 is arranged at the bottom of the traction shaft 31 to prevent the traction shaft 31 from moving out of the through slot 203 when the traction shaft 31 moves upward too much.

[0046] Embodiment 2:

[0047] like Figure 3 As shown, the protrusion 202 is arranged on the base 11, the abutment plate 731 is arranged on the traction rod 221, and a portion abutting against the traction rod 221 is arranged on the base 11, so as to fix the initial position of the moving iron core 222 when it is in a normal state and the traction rod 221 is in the second position. When the traction rod 221 switches from the second position to the first position, the traction rod 221 will rotate counterclockwise, thereby driving the abutment plate 731 to rotate counterclockwise. At this time, the traction shaft 31 will be pushed upward to drive the operating rod 32 to rotate, and the operating rod 32 will drive the extension rod 301 to rotate, thereby driving the releaser to release.

[0048] On the basis of the above embodiment: a controller module is arranged above the sensing shell 201, and the controller module includes a controller cover box 4. A snap-on structure is arranged between the controller cover box 4 and the sensing shell 201, and the snap-on structure includes a main plug-in 41 and an auxiliary plug-in 42 for assisting the main plug-in 41 in plugging.

[0049] The above specific improvements are: Figure 5 and Figure 6 As shown, in order to facilitate the quick and stable connection between the controller cover box 4 and the sensing shell 201, a snap-on structure is set between the two. The snap-on structure includes a main plug-in 41 and an auxiliary plug-in 42 that assists the main plug-in 41 in connecting. During the installation process, the main plug-in 41 needs to be aligned, and the auxiliary plug-in 42 can be naturally aligned, thereby realizing a quick connection between the controller cover box 4 and the sensing shell 201.

[0050] On the basis of the above embodiment: the main plug-in 41 includes a guide groove 411 arranged on one side of the sensing shell 201 or the controller cover box 4, and a guide strip 412 arranged on the other side and capable of being inserted into the guide groove 411, and a snap-on block 44 is arranged on the guide strip 412, and the snap-on block 44 abuts against the end face of the guide groove 411, the auxiliary plug-in 42 includes an auxiliary insert strip 421 and an auxiliary slot, and an abutment block 46 abutting against the auxiliary insert strip 421 is also arranged in the controller cover box 4.

[0051] The above specific improvements are: Figure 5 and Figure 6 As shown, the guide groove 411 is set on the controller cover box 4, and the guide bar 412 and the snap-on block 44 are set on the sensing shell 201. When the controller cover box 4 needs to be installed on the sensing shell 201, the guide groove 411 is aligned with the guide bar 412 and inserted downward until the snap-on block 44 is clamped on the end face of the guide bar 412, and the protrusion on the auxiliary plug-in strip 421 passes through the controller cover box 4 and abuts against the abutment block 46 in the controller cover box 4. When the guide groove 411 is aligned with the guide bar 412 and inserted downward, the auxiliary plug-in strip 421 on the other side will also automatically adapt to the auxiliary slot 422 on the controller cover box 4, thereby completing the quick installation of the controller cover box 4 and the sensing shell 201.

[0052] On the basis of the above embodiment: the controller module also includes a circuit board arranged inside the controller cover box 4, an adapter board 47 is arranged below the circuit board, the adapter board 47 is located above the sensing shell 201, a transformer socket 48 is arranged on the adapter board 47, and a wire groove 49 is opened at the controller cover box 4 for connecting the wires of the transformer socket 48.

[0053] The above specific improvements are: Figure 6As shown, a circuit board is arranged inside the controller module, and the circuit board is arranged above the adapter plate 47. A cavity for accommodating the adapter plate is extended from the top of the induction housing 201. A transformer female socket 48 (i.e., an N-phase plug) is arranged on the adapter plate 47. When a coil needs to be added, it is only necessary to connect the wire from the transformer female socket 48, and then connect the wire from the wire groove 49 to the outside to connect the motor. When the circuit breaker housing 1 is injection molded, it is only necessary to add a part of the housing for accommodating the motor to the original mold, and no additional mold is required, thereby effectively saving the production cost.

[0054] On the basis of the above embodiment: the induction housing 201 is provided with a wire management groove 5 for inserting wires of the adapter plate 47 and connecting with the transformer module.

[0055] On the basis of the above embodiment: the induction shell 201 includes a bottom shell 2011 and a cover plate 2022 buckled with the bottom shell 2011, at least two induction coils 6 are arranged inside the bottom shell 2011, a positioning block 61 for positioning the induction coil 6 is arranged on the bottom shell 2011, a partition 62 is arranged between adjacent induction coils 6, the partition 62 is arranged on the bottom shell 2011, and a convex rib 63 is arranged on the cover plate 2022 to abut against the end face of the induction coil 6, and a plug-in structure is formed between the convex rib 63 and the partition 62.

[0056] The above specific improvements are: Figure 6-Figure 8 As shown, the wires on the adapter plate 47 enter the interior of the induction housing 201 through the wire management groove 5, and then are connected to the induction coil 6. During installation, the induction coil 6 is first installed into the bottom shell 2011, and then the adapter plate 47 is installed to manage the wires. During the wiring process, the wires pass through the wire groove 49 and come out through an exit. Finally, the bottom shell 2011 and the cover plate 2022 are snapped together with multiple buckles. When the cover plate 2022 is closed, the convex rib 63 on the cover plate 2022 will press the induction coil 6 to prevent the induction coil from moving. Finally, the gap between the induction coil and the bottom shell 2011 is filled with glue. The bottom of the induction housing 201 has a nut, and the induction housing 201 and the base 11 are connected with bolts and nuts to prevent the two from slipping.

[0057] On the basis of the above embodiment: it also includes an arc extinguishing chamber 7, a contact mechanism 71 arranged on the side of the arc extinguishing chamber 7, the controller module is arranged on the side of the contact mechanism 71, and at least one pair of plug-in structures are arranged at the entrance of the controller module for preventing the airflow generated when the contact mechanism 71 is disconnected from entering the controller module.

[0058] The above specific improvements are: Fig. 9 and Fig.10As shown, the circuit breaker includes an arc extinguishing chamber 7, contacts and a controller module. When the contact mechanism 71 is disconnected, strong airflow will be applied, and the metal material will produce metal particles under the energy of the arc. Once these metal particles follow the strong airflow into the circuit board, it is easy to cause a short circuit in the circuit board. In addition, when disconnected, the strong airflow can easily blow off the cover 2022 on the control key for adjusting the parameters. In order to effectively prevent this problem from occurring, at least one pair of plug-in structures are provided at the entrance of the controller module to prevent airflow from entering.

[0059] On the basis of the above embodiment: a plurality of pairs of first plug-in structures 8 are formed between the middle cover 13 and the controller cover box, and the plurality of pairs of first plug-in structures 8 are extended along the outer shell direction of the controller cover box, and a second plug-in structure 9 for preventing airflow from entering the circuit board is formed between the middle cover 13 and the upper cover 12.

[0060] The above specific improvements are: Fig.10 As shown, a first plug-in structure 8 is formed between the middle cover 13 and the controller cover box 4. The first plug-in structure 8 is wrapped around the outer side of the controller cover box 4 to prevent strong airflow from entering the controller cover box 4. A second plug-in structure 9 is formed between the middle cover 13 and the upper cover 12 to prevent strong airflow from entering the circuit board. The second plug-in structure 9 has two plug-in ribs, and more can be provided according to actual conditions. Its function is to prevent the strong airflow inside the circuit breaker housing 1 from passing through the gap on the middle cover 13 to reach the control key for adjusting the parameter, thereby blowing off the cover plate 2022 provided above the control key.

[0061] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. An electronic molded case circuit breaker, characterized in that: include: A circuit breaker housing (1) comprises a base (11), an upper cover (12) arranged above the base (11), and a middle cover (13); The backup protection device is arranged inside the circuit breaker housing (1) and comprises: A sensing module (2) is disposed in the base (11); A plurality of static iron cores (10) are arranged at intervals on the induction module (2); A traction rod assembly comprises a traction rod (221) and a moving iron core (222) arranged on the traction rod (221) and corresponding to a plurality of stationary iron cores (10); An operating mechanism (30) capable of being linked with the release; A transmission rod assembly (3) has one end linked to a traction rod (221) and the other end linked to an operating mechanism (30). The transmission rod assembly (3) comprises a traction shaft (31). The operating mechanism (30) comprises an operating rod (32). The operating rod (32) is provided with a first extension block (321) capable of contacting the upper end of the traction shaft (31). The traction rod (221) is provided with a second extension block (311) contacting the lower end of the traction shaft (31). One end of the traction shaft (31) is linked to the first extension block (321), and the other end is linked to the second extension block (311). The operating rod (32) is arranged in parallel with the traction rod (221). The traction shaft (31) is sleeved with a protrusion (202) for assisting the vertical movement of the traction shaft (31).

2. An electronic molded case circuit breaker according to claim 1, characterized in that: The operating mechanism (30) further comprises an extension rod (301) located on the operating rod (32), and the traction shaft (31) is vertically arranged between the operating rod (32) and the traction rod (221).

3. An electronic molded case circuit breaker according to claim 2, characterized in that: The sensing module (2) further comprises a sensing housing (201); the protrusion (202) is arranged on the base (11) or the sensing housing (201); a through slot (203) is provided on the protrusion (202) for the traction shaft (31) to pass through; an abutment plate (731) is provided on the traction rod (221); the abutment plate (731) can abut against the base (11); the traction rod (221) has a first position in which the moving iron core (222) is in a short-circuit state and a second position in which the moving iron core (222) is in a normal state; when the traction rod (221) is in the second position, the abutment plate (731) abuts against the base (11).

4. An electronic molded case circuit breaker according to claim 3, characterized in that: A controller module is arranged above the sensing housing (201), the controller module comprising a controller cover box (4), a buckle connection structure is arranged between the controller cover box (4) and the sensing housing (201), the buckle connection structure comprising a main plug-in (41) and an auxiliary plug-in (42) for assisting the main plug-in (41) in plugging.

5. An electronic molded case circuit breaker according to claim 4, characterized in that: The main plug-in (41) comprises a guide groove (411) arranged on one side of the sensing housing (201) or the controller cover box (4), and a guide bar (412) arranged on the other side and capable of being inserted into the guide groove (411); a buckle block (44) is arranged on the guide bar (412), and the buckle block (44) abuts against the end surface of the guide groove (411); the auxiliary plug-in (42) comprises an auxiliary inserting bar (421) and an auxiliary slot; and an abutting block (46) abutting against the auxiliary inserting bar (421) is also arranged in the controller cover box (4).

6. An electronic molded case circuit breaker according to claim 4 or 5, characterized in that: The controller module also includes a circuit board arranged inside the controller cover box (4), an adapter board (47) is arranged below the circuit board, the adapter board (47) is located above the induction housing (201), a transformer female socket (48) is arranged on the adapter board (47), and a wire groove (49) for connecting wires of the transformer female socket (48) is opened at the controller cover box (4).

7. An electronic molded case circuit breaker according to claim 6, characterized in that: The induction housing (201) is provided with a wire management groove (5) for inserting wires of the adapter plate (47) and connecting to the mutual inductor module.

8. An electronic molded case circuit breaker according to claim 6, characterized in that: The induction housing (201) comprises a bottom shell (2011) and a cover plate (2022) buckled with the bottom shell (2011); at least two induction coils (6) are arranged inside the bottom shell (2011); a positioning block (61) for positioning the induction coils (6) is arranged on the bottom shell (2011); a partition plate (62) is arranged between adjacent induction coils (6); the partition plate (62) is arranged on the bottom shell (2011); a convex rib (63) abutting against an end surface of the induction coil (6) is arranged on the cover plate (2022); a plug-in structure is formed between the convex rib (63) and the partition plate (62).

9. An electronic molded case circuit breaker according to claim 7 or 8, characterized in that: It also comprises an arc extinguishing chamber (7), a contact mechanism (71) arranged on the side of the arc extinguishing chamber (7), the controller module being arranged on the side of the contact mechanism (71), and at least one pair of plug-in structures being arranged at the entrance of the controller module for preventing the airflow generated when the contact mechanism (71) is disconnected from entering the controller module.

10. An electronic molded case circuit breaker according to claim 9, characterized in that: A plurality of pairs of first plug-in structures (8) are formed between the middle cover (13) and the controller cover box, and the plurality of pairs of first plug-in structures (8) are extended along the outer shell direction of the controller cover box. A second plug-in structure (9) for preventing airflow from entering the circuit board is formed between the middle cover (13) and the upper cover (12).

Images