CN215525924U - Current divider and circuit breaker - Google Patents
Current divider and circuit breaker Download PDFInfo
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- CN215525924U CN215525924U CN202120527775.XU CN202120527775U CN215525924U CN 215525924 U CN215525924 U CN 215525924U CN 202120527775 U CN202120527775 U CN 202120527775U CN 215525924 U CN215525924 U CN 215525924U
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Abstract
The utility model provides a shunt and circuit breaker, relates to electric technical field, including resistance portion and set up respectively in the first connecting portion and the second connecting portion of the relative both sides of resistance portion, first connecting portion extend towards the direction of keeping away from resistance portion has first extension, and first extension is used for being connected with the input of circuit breaker, and second connecting portion extend towards the direction of keeping away from resistance portion has the second extension, and the second extension is used for being connected with the thermal release of circuit breaker. The shunt and the circuit breaker can improve the distribution consistency of current in the shunt, thereby improving the precision of the shunt.
Description
Technical Field
The utility model relates to the technical field of electricity, in particular to a current divider and a circuit breaker.
Background
With the continuous acceleration of the urban modernization process, the living standard and the living standard of people are continuously improved, higher requirements on the electricity safety are also provided, and the direct current circuit breaker is more and more widely applied in life. Different from a traditional alternating current circuit breaker, direct current cannot be detected through a traditional transformer, and current detection needs to be carried out by depending on a shunt, a Hall element or other current detection devices.
When the direct current breaker adopts the shunt to detect direct current, the shunt needs to be connected into the breaker, but the consistency of the welding positions of the existing shunt and the wires at two ends is difficult to control, so that the distribution consistency of the current in the shunt is poor, and the precision of the shunt is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a shunt and a circuit breaker, which can improve the uniformity of the distribution of current in the shunt, thereby improving the precision of the shunt.
The embodiment of the utility model is realized by the following steps:
in one aspect of the embodiments of the present invention, a current divider is provided, including a resistor, and a first connecting portion and a second connecting portion respectively disposed on two opposite sides of the resistor, where the first connecting portion extends a first extending portion toward a direction away from the resistor, the first extending portion is used for being connected with an input end of a circuit breaker, the second connecting portion extends a second extending portion toward a direction away from the resistor, and the second extending portion is used for being connected with a thermal trip of the circuit breaker. The shunt can improve the distribution consistency of current in the shunt, thereby improving the precision of the shunt.
Optionally, a first signal end is disposed on one side of the first connecting portion close to the resistance portion, a second signal end is disposed on one side of the second connecting portion close to the resistance portion, and the first signal end and the second signal end are respectively used for being connected to two connection ports on a circuit board of the circuit breaker.
Optionally, the first extension portion and the first signal end are respectively located at opposite sides of the first connection portion, and the second extension portion and the second signal end are respectively located at opposite sides of the second connection portion, or the first extension portion and the first signal end are respectively located at adjacent sides of the first connection portion, and the second extension portion and the second signal end are respectively located at adjacent sides of the second connection portion.
Optionally, the first extension portion and the second extension portion are disposed in an axisymmetric manner with a center line of the resistor portion as a symmetry axis, and the first signal end and the second signal end are disposed in an axisymmetric manner with the center line of the resistor portion as a symmetry axis, or the first extension portion and the second extension portion are disposed in a centrosymmetric manner with a center of the resistor portion as a symmetry center, and the first signal end and the second signal end are disposed in a centrosymmetric manner with the center of the resistor portion as a symmetry center.
Optionally, the resistor portion has a rectangular structure, and the first connection portion and the second connection portion are respectively located at two opposite sides of the resistor portion in the length direction.
Optionally, in a width direction of the resistance portion, a width of the first connection portion and a width of the second connection portion are both smaller than a width of the resistance portion.
Optionally, a cross-sectional area of the first extension portion is smaller than a cross-sectional area of the first connection portion, and a cross-sectional area of the second extension portion is smaller than a cross-sectional area of the second connection portion.
Optionally, the tolerance of the resistance value of the resistance portion is less than 1%.
Optionally, the resistance portion is made of a manganese-copper alloy, and the first connection portion and the second connection portion are made of red copper.
In another aspect of the embodiments of the present invention, a circuit breaker is provided, which includes the shunt described above. The shunt can improve the distribution consistency of current in the shunt, thereby improving the precision of the shunt.
The embodiment of the utility model has the beneficial effects that:
the shunt comprises a resistance part, a first connecting part and a second connecting part, wherein the first connecting part and the second connecting part are respectively arranged on two opposite sides of the resistance part, a first extending part extends towards the direction away from the resistance part, the first extending part is used for being connected with the input end of the circuit breaker, so that the first connecting part is connected with the input end of the circuit breaker through the first extending part, a second extending part extends towards the direction away from the resistance part, the second extending part is used for being connected with a thermal release of the circuit breaker, so that the second connecting part is connected with the thermal release of the circuit breaker through the second extending part, current detection can be carried out on the circuit breaker through the shunt, current in the circuit breaker can be monitored, and the power utilization safety of a power distribution system is further ensured. Compared with the current divider in the prior art, in the current divider provided by the application, the first extension part is located at the position where the first connecting part is far away from the resistance part, the second extension part is located at the position where the second connecting part is far away from the resistance part, namely, the first extension part and the second extension part are relatively far away from the resistance part, therefore, the current divider can be conveniently welded with wires at two ends, so that the consistency of the welding positions of the current divider and the wires at two ends can be improved, the influence of the welding positions of the current divider and the wires at two ends on the current distribution when the current enters the current divider can be reduced, the consistency of the distribution of the current in the current divider can be improved, and the precision of the current divider is further improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of a flow divider according to an embodiment of the present invention;
fig. 2 is a second schematic structural diagram of a shunt according to an embodiment of the present invention;
fig. 3 is a third schematic structural diagram of a shunt according to an embodiment of the present invention;
FIG. 4 is a fourth schematic structural diagram of a flow divider according to an embodiment of the present invention;
fig. 5 is a fifth schematic structural view of a flow divider according to an embodiment of the present invention.
Icon: 100-a flow divider; 10-a resistance portion; 20-a first connection; 21-a first extension; 22-a first signal terminal; 30-a second connection; 31-a second extension; 32-a second signal terminal; 200-an input terminal; 210-thermal trip; 220-a circuit board; 221-connection port.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be internal to both elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 3, the present embodiment provides a current divider 100, including a resistance portion 10, and a first connecting portion 20 and a second connecting portion 30 respectively disposed at two opposite sides of the resistance portion 10, where the first connecting portion 20 extends a first extending portion 21 towards a direction away from the resistance portion 10, the first extending portion 21 is used to connect with an input end 200 of a circuit breaker, the second connecting portion 30 extends a second extending portion 31 towards a direction away from the resistance portion 10, and the second extending portion 31 is used to connect with a thermal trip 210 of the circuit breaker. The shunt 100 can improve the uniformity of the distribution of current within the shunt 100, thereby improving the accuracy of the shunt 100.
It should be noted that the shunt 100 includes a resistor 10, a first connection portion 20 and a second connection portion 30, the first connection portion 20 and the second connection portion 30 are respectively disposed at two opposite sides of the resistor 10, the first connection portion 20 extends a first extension portion 21 in a direction away from the resistor 10, the first extension portion 21 is used for connecting with an input end 200 of the circuit breaker, so that the first connection portion 20 is connected with the input end 200 of the circuit breaker through the first extension portion 21, the second connection portion 30 is extended with the second extension portion 31 towards the direction far away from the resistance portion 10, the second extension portion 31 is used for connecting with the thermal trip 210 of the circuit breaker, so that the second connection portion 30 is connected to the thermal trip 210 of the circuit breaker through the second extension portion 31, thereby enabling current detection of the circuit breaker through the shunt 100, and then can monitor the electric current in the circuit breaker, further guarantee distribution system's power consumption safety.
Since the first connection portion 20 is disposed on one side of the resistor portion 10, that is, one side of the first connection portion 20 and one side of the resistor portion 10 are in contact with each other, the first extension portion 21 extends from the first connection portion 20 in a direction away from the resistor portion 10, and it can be understood that the first extension portion 21 extends from one side of the first connection portion 20, which is not in contact with the resistor portion 10, in a direction away from the resistor portion 10. Similarly, since the second connection portion 30 is disposed on the other side of the resistor portion 10, that is, one side of the second connection portion 30 and the other side of the resistor portion 10 are in contact with each other, the second extension portion 31 extends from the second connection portion 30 in a direction away from the resistor portion 10, and it can be understood that the second extension portion 31 extends from one side of the second connection portion 30, which is not in contact with the resistor portion 10, in a direction away from the resistor portion 10.
Referring to fig. 4 and 5, regarding that the first extending portion 21 is located on a side of the first connecting portion 20 not in contact with the resistor portion 10 (or an orientation of the first extending portion 21 with respect to the first connecting portion 20/the resistor portion 10) and the second extending portion 31 is located on a side of the second connecting portion 30 not in contact with the resistor portion 10 (or an orientation of the second extending portion 31 with respect to the second connecting portion 30/the resistor portion 10), there is no particular limitation, and those skilled in the art should be able to make reasonable selection and design according to actual situations. In addition, the length of the first extending portion 21 (or the distance between the first extending portion 21 and the resistor portion 10) and the length of the second extending portion 31 (or the distance between the second extending portion 31 and the resistor portion 10) are not limited in particular, and those skilled in the art should be able to select and design the length and the distance as appropriate according to the actual situation.
It should be noted that, as the first extension portion 21 and the second extension portion 31 are farther from the resistor portion 10, the shunt 100 can be more easily welded to the wires at both ends, and thus, the accuracy of the shunt 100 can be further improved.
In the shunt in the prior art, the positions of two end parts of the shunt, which are used for being connected with a circuit breaker, are closer to a resistance part, so that the consistency of the welding positions of the shunt and wires at two ends is difficult to control, the distribution consistency of current in the shunt is poor, and the precision of the shunt is poor. In the shunt 100 provided by the present application, the first extension portion 21 is located at a position far from the resistor portion 10 of the first connection portion 20 (which may be determined according to an orientation of the first extension portion 21 with respect to the first connection portion 20/resistor portion 10 and a distance between the first extension portion 21 and the resistor portion 10), the second extension portion 31 is located at a position far from the resistor portion 10 of the second connection portion 30 (which may be determined according to an orientation of the second extension portion 31 with respect to the second connection portion 30/resistor portion 10 and a distance between the second extension portion 31 and the resistor portion 10), that is, both the first extension portion 21 and the second extension portion 31 are located relatively far from the resistor portion 10, so that the shunt 100 can be conveniently welded with wires at both ends, thereby improving consistency of the shunt 100 with the welding positions of the wires at both ends, and reducing an influence of the welding positions of the shunt 100 with the wires at both ends on current distribution when the current enters the shunt 100, further, the uniformity of the distribution of the current in the shunt 100 can be improved, and the accuracy of the shunt 100 can be further improved.
It will be appreciated by those skilled in the art that the first extension 21 is used to connect to the input 200 of the circuit breaker and the second extension 31 is used to connect to the thermal trip 210 of the circuit breaker, wherein the input 200 of the circuit breaker is the reference point of the power supply, i.e., the negative pole of the power supply, which can reduce the interference with the current detection and further improve the accuracy of the shunt 100.
As described above, the shunt 100 includes the resistance portion 10, and the first connection portion 20 and the second connection portion 30 respectively disposed at two opposite sides of the resistance portion 10, the first connection portion 20 extends to the direction away from the resistance portion 10 to form the first extension portion 21, the first extension portion 21 is used for being connected to the input end 200 of the circuit breaker, so that the first connection portion 20 is connected to the input end 200 of the circuit breaker through the first extension portion 21, the second connection portion 30 extends to the direction away from the resistance portion 10 to form the second extension portion 31, the second extension portion 31 is used for being connected to the thermal trip 210 of the circuit breaker, so that the second connection portion 30 is connected to the thermal trip 210 of the circuit breaker through the second extension portion 31, thereby detecting the current of the circuit breaker through the shunt 100, further monitoring the current in the circuit breaker, and further ensuring the electrical safety of the power distribution system. Compared with the shunt in the prior art, in the shunt 100 provided by the present application, the first extension portion 21 is located at a position where the first connection portion 20 is far away from the resistor portion 10, and the second extension portion 31 is located at a position where the second connection portion 30 is far away from the resistor portion 10, that is, the first extension portion 21 and the second extension portion 31 are both relatively far away from the resistor portion 10, so that the shunt 100 can be conveniently welded to the two end wires, the welding position of the shunt 100 and the two end wires can be improved in consistency, the influence of the welding position of the shunt 100 and the two end wires on the current distribution when the current enters the shunt 100 can be reduced, the distribution consistency of the current in the shunt 100 can be improved, and the precision of the shunt 100 can be further improved.
As shown in fig. 1 to 5, in the present embodiment, a first signal terminal 22 is disposed on a side of the first connection portion 20 close to the resistance portion 10, a second signal terminal 32 is disposed on a side of the second connection portion 30 close to the resistance portion 10, and the first signal terminal 22 and the second signal terminal 32 are respectively used for being connected to two connection ports 221 on a circuit board 220 of the circuit breaker to output signals acquired by the shunt 100, so as to monitor a current in the circuit breaker, and further ensure the power utilization safety of the power distribution system.
Since the first connection portion 20 is disposed on one side of the resistor portion 10, that is, one side of the first connection portion 20 and one side of the resistor portion 10 are in contact with each other, the first signal terminal 22 is disposed on one side of the first connection portion 20 close to the resistor portion 10, and it can be understood that the first signal terminal 22 is disposed on one side of the first connection portion 20 close to the resistor portion 10 and not in contact with the resistor portion 10. Similarly, since the second connection portion 30 is disposed at the other side of the resistor portion 10, that is, one side of the second connection portion 30 is in contact with the other side of the resistor portion 10, the second signal terminal 32 is disposed at a side of the second connection portion 30 close to the resistor portion 10, and it can be understood that the second signal terminal 32 is disposed at a side of the second connection portion 30 close to the resistor portion 10, which is not in contact with the resistor portion 10.
As shown in fig. 1 to 5, regarding that the first signal terminal 22 is located at a side of the first connection portion 20 that is not in contact with the resistor portion 10 and is close to the resistor portion 10 (or an orientation of the first signal terminal 22 with respect to the first connection portion 20/the resistor portion 10) and the second signal terminal 32 is located at a side of the second connection portion 30 that is not in contact with the resistor portion 10 and is close to the resistor portion 10 (or an orientation of the second signal terminal 32 with respect to the second connection portion 30/the resistor portion 10), there is no particular limitation here, and those skilled in the art should be able to make reasonable selection and design according to actual circumstances. Besides, regarding the length of the first signal terminal 22 (or the distance between the first signal terminal 22 and the resistor portion 10) and the length of the second signal terminal 32 (or the distance between the second signal terminal 32 and the resistor portion 10), there is no particular limitation, and those skilled in the art should be able to make reasonable selection and design according to the actual situation.
It should be noted that, as the first signal terminal 22 and the second signal terminal 32 are closer to the resistor 10, the influence of the first connection portion 20 and the second connection portion 30 on the signal output is smaller, so that the accuracy of the shunt 100 can be further improved.
In the shunt in the prior art, the two end parts of the shunt, which are used for being connected with a circuit breaker signal, are far away from the position of the resistance part, so that the consistency of the output signal of the shunt is difficult to control, and the accuracy of the shunt is poor. In the shunt 100 provided by the present application, the first signal terminal 22 is located near the resistor portion 10 of the first connection portion 20 (which may be determined by the orientation of the first signal terminal 22 with respect to the first connection portion 20/resistor portion 10 and the distance between the first signal terminal 22 and the resistor portion 10), the second signal terminal 32 is located near the resistor portion 10 of the second connection portion 30 (which may be determined by the orientation of the second signal terminal 32 with respect to the second connection portion 30/resistor portion 10 and the distance between the second signal terminal 32 and the resistor portion 10), i.e. the first signal terminal 22 and the second signal terminal 32 are both located relatively close to the resistive portion 10, therefore, the influence of the first connection portion 20 and the second connection portion 30 on the signal output is relatively small, the output signal of the shunt 100 can be made uniform, and the accuracy of the shunt 100 can be improved.
It should be understood by those skilled in the art that a signal output port extending out of the housing of the circuit breaker may be provided on the circuit board 220 of the circuit breaker, so that the value of the current flowing through the shunt 100 can be calculated by outputting the voltage obtained through the first signal terminal 22 and the second signal terminal 32, and combining the known resistance value of the resistor portion 10.
Illustratively, the first extension portion 21 and the first signal terminal 22 are respectively located at opposite sides of the first connection portion 20 and the second extension portion 31 and the second signal terminal 32 are respectively located at opposite sides of the second connection portion 30, as shown in fig. 1 and 4, or, the first extension portion 21 and the first signal terminal 22 are respectively located at adjacent sides of the first connection portion 20 and the second extension portion 31 and the second signal terminal 32 are respectively located at adjacent sides of the second connection portion 30, as shown in fig. 5.
In order to further improve the accuracy of the shunt 100, for example, as shown in fig. 4, the first extension portion 21 and the second extension portion 31 are disposed in axial symmetry with the central line of the resistor portion 10 as the symmetry axis, and the first signal terminal 22 and the second signal terminal 32 are disposed in axial symmetry with the central line of the resistor portion 10 as the symmetry axis, or as shown in fig. 1 and 5, the first extension portion 21 and the second extension portion 31 are disposed in central symmetry with the center of the resistor portion 10 as the symmetry center, and the first signal terminal 22 and the second signal terminal 32 are disposed in central symmetry with the center of the resistor portion 10 as the symmetry center.
As shown in fig. 1 to 5, in the present embodiment, the resistor portion 10 has a rectangular structure, and the first connection portion 20 and the second connection portion 30 are respectively located at two opposite sides of the resistor portion 10 in the length direction, or the connection direction of the first connection portion 20 and the second connection portion 30 is perpendicular to the length direction of the resistor portion 10. In the present embodiment, the width of the first connection portion 20 and the width of the second connection portion 30 are smaller than the width of the resistor portion 10 along the width direction of the resistor portion 10, so as to reduce the resistance of the resistor portion 10 and increase the heat dissipation surface area of the shunt 100. In the present embodiment, the cross-sectional area of the first extension 21 is smaller than that of the first connection portion 20, and the cross-sectional area of the second extension 31 is smaller than that of the second connection portion 30.
Alternatively, the tolerance of the resistance value of the resistance portion 10 is less than 1%. In this embodiment, the material of the resistor 10 is manganese-copper alloy, and the material of the first connection portion 20 and the second connection portion 30 is red copper. Because the alloy composed of the metal manganese with the negative temperature coefficient and the metal copper with the positive temperature coefficient can enable the temperature coefficient of the resistance part 10 to be close to 0 through adjusting the alloy proportion, the resistance stability of the resistance part 10 can be better, and the change under different temperature environments can be smaller.
The present application further provides a circuit breaker. The circuit breaker provided by the present embodiment includes the shunt 100 described above. Since the structure and advantageous effects of the flow divider 100 have been described in detail in the foregoing embodiments, no further description is provided herein.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a current divider, its characterized in that, include resistance portion and set up respectively in the first connecting portion and the second connecting portion of the relative both sides of resistance portion, first connecting portion orientation is kept away from the direction extension of resistance portion has first extension, first extension is used for being connected with the input of circuit breaker, the second connecting portion orientation is kept away from the direction extension of resistance portion has the second extension, the second extension be used for with the thermal release of circuit breaker is connected.
2. The shunt according to claim 1, wherein a first signal terminal is disposed on a side of the first connecting portion adjacent to the resistance portion, and a second signal terminal is disposed on a side of the second connecting portion adjacent to the resistance portion, and the first signal terminal and the second signal terminal are respectively configured to be connected to two connection ports on a circuit board of the circuit breaker.
3. The shunt of claim 2, wherein the first extension and the first signal end are located on opposite sides of the first connection portion and the second extension and the second signal end are located on opposite sides of the second connection portion, or wherein the first extension and the first signal end are located on adjacent sides of the first connection portion and the second extension and the second signal end are located on adjacent sides of the second connection portion.
4. The shunt of claim 3, wherein the first extension and the second extension are disposed in an axisymmetric manner with respect to a center line of the resistor portion, and the first signal terminal and the second signal terminal are disposed in an axisymmetric manner with respect to a center line of the resistor portion, or wherein the first extension and the second extension are disposed in a centrosymmetric manner with respect to a center of the resistor portion, and the first signal terminal and the second signal terminal are disposed in a centrosymmetric manner with respect to a center of the resistor portion.
5. The shunt according to claim 1, wherein the resistor portion has a rectangular shape, and the first connection portion and the second connection portion are respectively located at opposite sides of the resistor portion in a length direction.
6. The shunt according to claim 5, wherein a width of the first connection portion and a width of the second connection portion are each smaller than a width of the resistance portion in a width direction of the resistance portion.
7. The shunt of claim 1, wherein the cross-sectional area of the first extension is less than the cross-sectional area of the first connection and the cross-sectional area of the second extension is less than the cross-sectional area of the second connection.
8. The shunt of claim 1, wherein a tolerance of a resistance value of the resistive portion is less than 1%.
9. The shunt according to claim 1, wherein the resistance portion is made of manganin alloy, and the first connection portion and the second connection portion are made of red copper.
10. A circuit breaker comprising a shunt according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120527775.XU CN215525924U (en) | 2021-03-11 | 2021-03-11 | Current divider and circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120527775.XU CN215525924U (en) | 2021-03-11 | 2021-03-11 | Current divider and circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215525924U true CN215525924U (en) | 2022-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120527775.XU Active CN215525924U (en) | 2021-03-11 | 2021-03-11 | Current divider and circuit breaker |
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| Country | Link |
|---|---|
| CN (1) | CN215525924U (en) |
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2021
- 2021-03-11 CN CN202120527775.XU patent/CN215525924U/en active Active
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