CN203503578U - Tripping trigger device for small residual-current circuit breaker - Google Patents
Tripping trigger device for small residual-current circuit breaker Download PDFInfo
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- CN203503578U CN203503578U CN201320571614.6U CN201320571614U CN203503578U CN 203503578 U CN203503578 U CN 203503578U CN 201320571614 U CN201320571614 U CN 201320571614U CN 203503578 U CN203503578 U CN 203503578U
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- handle portion
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Abstract
The utility model provides a tripping trigger device for a small residual-current circuit breaker. The tipping trigger device is characterized by comprising a shell, an electric leakage sensing assembly, a transmission part and a triggering part, wherein the electric leakage sensing assembly, the transmission part and the triggering part are arranged in the shell, the triggering part is suitable for triggering the tripping of a tripping mechanism, the electric leakage sensing assembly generates a horizontal impelling force after sensing leakage current with specific quantity, the transmission part rotates under the action of the horizontal impelling force, and the triggering part is driven to trigger the tripping of the tripping mechanism under the action of the rotating of the transmission part.
Description
Technical field
The utility model belongs to low voltage electrical apparatus technology field, is specifically related to a kind of dropout trigger equipment of Minitype electrical leakage breaker.
Background technology
In family expenses electric power system, for user's safety and protection household electrical appliance, conventionally Minitype electrical leakage breaker can be installed, and along with the improving constantly of power industry and electricity consumption level, to the performance of above-mentioned Minitype electrical leakage breaker, quality etc., require more and more higher; As everyone knows, general Minitype electrical leakage breaker is combined by miniature circuit breaker body and disengaging deivce of earth leakage, the parts that use are a lot, such Minitype electrical leakage breaker volume is larger, it is very inconvenient that family is used, thereby the Minitype electrical leakage breaker that a kind of volume is little, breaking capacity is high is developed in people's an urgent demand.
Existing for earth leakage protective Minitype electrical leakage breaker, mainly comprise dropout trigger equipment and the trip gear that can thread off under the effect of dropout trigger equipment, dropout trigger equipment mainly comprises shell, mechanism base, bedplate, is equipped with tripping coil in the enclosure, iron core, test button spring, test button, wiring board, zero-sequence transformer, free-handle, U-shaped connecting rod, tripping, snap close and rotation seat etc., during use, when zero-sequence transformer senses leakage current, above-mentioned secondary can be exported a voltage to wiring board, when voltage reaches certain value, can trigger the controlled silicon conducting being arranged on above-mentioned wiring board, the tripping coil being now connected on controlled silicon conducting circuit can produce electromagnetism motive force, under the effect of electromagnetism motive force, pass through iron core, the multiple action of torsion spring and free-handle could realize final dropout, above-mentioned dropout trigger equipment complex structure, and volume is larger, and mould development input amount is large, and the construction cycle is long, there is no versatility with other Minitype electrical leakage breakers.
Utility model content
Therefore, the technical problem that will solve of the present utility model is to provide the trigger equipment of a kind of simple in structure, reliable in action, Minitype electrical leakage breaker tripping mechanism that volume is little.
For this reason, the utility model provides a kind of dropout trigger equipment of Minitype electrical leakage breaker, comprise shell, be arranged on electric leakage inductive component, the driving member in described shell and be suitable for triggering the triggering part that tripping mechanism is threaded off, described electric leakage inductive component produces horizontal impulse after sensing the leakage current of specific size, described driving member rotates under the effect of described horizontal impulse, and described triggering part is subject to the rotary action of described driving member to drive triggering tripping mechanism to thread off.
Described driving member comprises driving lever, and described driving lever has installing hole, rotating shaft and power transmission shaft, and described driving lever is arranged in described shell by described rotating shaft is rotating; Described electric leakage inductive component has iron core connecting portion that can horizontal movement under the effect of described horizontal impulse, described iron core connecting portion is arranged in described installing hole becomes an interlock integral body with described driving lever, and in short transverse, form buffer gap with described installing hole, make described iron core connecting portion under the effect of described horizontal impulse, can drive described driving lever to rotate around described rotating shaft.
Described triggering part comprises dropout sheet, and described dropout sheet has short handle portion and the long handle portion that becomes special angle to be fixedly connected with described short handle portion, and the free end of described long handle portion is provided with through hole; Described power transmission shaft comprises the first connecting portion and the second connecting portion, during inactive state, the inwall of the length direction along described long handle portion of described the second connecting portion and described through hole contacts, and described the first connecting portion is arranged in described through hole and has certain distance with described through hole upper and lower inwall; When described driving lever rotates around described rotating shaft, the inwall that the second connecting portion of described power transmission shaft promotes described through hole moves described long handle portion along its length, and then drives described short handle portion to trigger described tripping mechanism to thread off.
The described certain degree forming between described short handle portion and described long handle portion becomes to be less than the acute angle of 90 °.
Described electric leakage inductive component comprises and is arranged in described shell and the zero-sequence transformer, wiring board, controlled silicon conducting and the tripping coil that are electrically connected to, described tripping coil produces described horizontal impulse under the effect of leakage current, the iron core that can be pulled by described horizontal impulse is installed in described tripping coil inside, and described iron core drives described driving member to rotate by described iron core connecting portion.
The removal hole that described installing hole has interface channel and is connected with described interface channel.
Described through hole is circular port or square opening.
On described shell, be provided with gathering sill, described gathering sill is used for supporting described long handle portion, and described gathering sill is parallel to the direction of motion of described iron core.
Described long handle portion and described short handle portion are one-body molded.
The dropout trigger equipment of Minitype electrical leakage breaker of the present utility model has the following advantages:
1. the dropout trigger equipment of the utility model Minitype electrical leakage breaker, by electric leakage inductive component, driving member and the mating reaction that triggers part, the iron core horizontal movement being caused by electric leakage is converted into the rotation of driving lever, by rotation, drive the horizontal movement of dropout sheet again, the slope driving couple axle of the short handle portion part of dropout sheet is upwards moving, circuit breaker tripping is disconnected cuts off the electricity supply, use less parts just to realize stable tripping function, and arrive and rotate the conversion of arriving again horizontal movement by horizontal movement, tripping coil and dropout sheet are spatially arranged in parallel, having compressed plane takes up room, and motion reasonably stability, make on the whole Minitype electrical leakage breaker tripping mechanism of the present utility model take up room little, compact conformation, be convenient to installing and using of normal domestic use.
2. the dropout trigger equipment of the utility model Minitype electrical leakage breaker, adopted driving lever as the medium that transmits iron core connecting portion motive force, iron core connecting portion is arranged in the installing hole of described driving lever, and in the short transverse of installing hole, form buffer gap with described installing hole, iron core connecting portion, under the effect of horizontal impulse, drives described driving lever to rotate around described rotating shaft.Because described driving lever is fixed on case for circuit breaker by rotating shaft is rotating, not can with the irrelevant direction of transmission on be offset, thereby transmission is reliable and stable, deviation is very little.By described iron core connecting portion, be converted into the rotation of described driving lever with the horizontal impulse that electric leakage inductive component is produced that coordinates of described installing hole, for triggering the triggering of part, provide advantage, the existence of buffer gap and iron core connecting portion and the conversion that has realized the direction of motion coordinating of installing hole, simple in structure, take up room little.
3. the dropout trigger equipment of the utility model Minitype electrical leakage breaker, described triggering part comprises dropout sheet, described dropout sheet has short handle portion and becomes to be less than the acute angle of 90 ° with described short handle portion and be fixedly connected with or integrated long handle portion, the free end of described long handle portion is provided with through hole, the inclined-plane of described dropout sheet is used for promoting couple axle and moves upward, and circuit breaker tripping is opened and cut off the electricity supply, described power transmission shaft is flat, comprises the first connecting portion and the second connecting portion, and during inactive state, described the second connecting portion contacts with the inwall of the length direction along described long handle portion in described through hole, and auxiliary described dropout trigger equipment keeps stable, when electric leakage inductive component senses leakage current, iron core horizontal movement, drive driving lever rotates around the axis, thereby drive power transmission shaft to rotate around the axis, the second connecting portion of described power transmission shaft promotes the inwall along described long handle portion length direction of described through hole, described long handle portion is moved along its length, and now described the first connecting portion be arranged in described through hole and with described through hole on, below inwall has certain distance, that is: described the first connecting portion and described through hole have cushion space in the short transverse of through hole, when described driving lever rotates around described rotating shaft, owing to there being above-mentioned cushion space, the first connecting portion can not touch the described dropout sheet sheet sheet that causes threading off and occur the displacement of above-below direction in short transverse, but promote in the longitudinal direction described dropout sheet along moving horizontally on the length direction of its long handle portion by the second connecting portion, and then drive described short handle portion to trigger described tripping mechanism to thread off.By the power transmission shaft of platypelloid type on described driving lever and coordinating of through hole on described dropout sheet, the stable rotation of driving lever is had to the horizontal movement that has changed into dropout sheet, the stability of rotating due to driving lever is high, horizontal movement stability by the dropout sheet of its triggering has obtained enhancing, makes the short handle portion of above-mentioned dropout sheet can trigger reliably tripping mechanism and threads off.Therefore, the fit system of this kind of dropout sheet and power transmission shaft has not only been realized the stability of device, also improves the sensitivity triggering.
4. the dropout trigger equipment of the utility model Minitype electrical leakage breaker, the described certain degree forming between described short handle portion and described long handle portion is less than 90, during horizontal movement, the conversion of motion of its length direction is to acutangulate the horizontal movement of the short handle portion of angle direction with length direction, thereby make the tripping mechanism to be triggered can be along the length direction setting of described long handle portion, effectively utilize upper and lower space, shortened the area occupied of length direction, thereby make device space utilization of the present utility model reasonable, compact conformation.
5. the dropout trigger equipment of the utility model Minitype electrical leakage breaker, the long handle portion of above-mentioned dropout sheet is arranged in the gathering sill of shell, when driving lever transmission is during from the motive force of iron core, above-mentioned long handle portion can only move horizontally along the direction of gathering sill, can not produce other skews, further strengthened dropout sheet and made connected short handle portion reliable in action, can have enough shift lengths to promote or clash into couple axle to move upward, the body of circuit breaker has been disconnected and cut off the electricity supply.
6. the dropout trigger equipment of the utility model Minitype electrical leakage breaker be less than 5 millimeters with the length that is positioned at the power transmission shaft on driving lever above-mentioned through hole connection and can realize stable drive effect, save installing space, thereby can further reduce the space hold volume of finished product circuit breaker.
Accompanying drawing explanation
Fig. 1 is the rip cutting planar structure schematic diagram of the dropout trigger equipment of the utility model embodiment 1 residual current circuit breaker.
Fig. 2 is the structural representation of driving lever in Fig. 1.
Fig. 3 is the structural representation of sheet of threading off in Fig. 1.
Fig. 4 is the syndeton schematic diagram of tripping coil in Fig. 1, driving lever and dropout sheet.
Fig. 5 is Fig. 1 housing guide groove structure schematic diagram.
Fig. 6 is the overall schematic of residual current circuit breaker tripping mechanism in embodiment 1.
In figure:
1-shell, 11-gathering sill; 2-dropout sheet, 21-through hole, 22-inclined-plane; 3-driving lever, 31-power transmission shaft, 31a-the first connecting portion, 32b-the second connecting portion, 32-installing hole, 33-rotating shaft, 34-interface channel, 35-removal hole; 4-couple axle; 5-tripping coil; 6-iron core, 61-iron core connecting portion; 7-wiring board.
Embodiment
Below in conjunction with accompanying drawing, the dropout trigger equipment of Minitype electrical leakage breaker of the present utility model is described in further detail.
As shown in Figure 1, the dropout trigger equipment of the Minitype electrical leakage breaker of the present embodiment, comprise shell 1, be arranged in shell 1 and the zero-sequence transformer (not shown), wiring board 7, controlled silicon conducting (not shown) and the tripping coil 5 that are electrically connected to, the power-actuated iron core 6 of electromagnetism that can be produced by tripping coil 5, passes to the side-to-side movement of iron core 6 driving lever 3 and the dropout sheet 2 of dropout sheet 2.
Wherein, above-mentioned zero-sequence transformer has the secondary of transmission voltage, when zero-sequence transformer senses leakage current, above-mentioned secondary can be exported a voltage to wiring board 7, when voltage reaches certain value, can trigger and be arranged on the controlled silicon conducting on above-mentioned wiring board 7, the tripping coil 5 being now connected on controlled silicon conducting circuit can produce electromagnetism motive force.
As shown in Figure 2, driving lever 3 is provided with installing hole 32, rotating shaft 33 and the power transmission shaft 31 that can be connected with above-mentioned iron core connecting portion 61.Above-mentioned driving lever 3 is fixed on shell 1 by rotating shaft 33 is rotating, iron core connecting portion 61 is installed to the integral body that forms an interlock in installing hole 32 with driving lever 3, and form buffer gap with installing hole 32, under the effect of the horizontal impulse of iron core connecting portion 61 to the right, drive driving lever 3 33 rotations of the directions towards tripping coil 5 around the shaft, and then cause that power transmission shaft 31 33 rotates around the shaft.
Above-mentioned triggering part comprises dropout sheet 2, as shown in Figure 3-4, dropout sheet 2 has the short handle portion and the long handle portion that becomes special angle and be fixedly connected with short handle portion with inclined-plane 22 that comprise, the free end of above-mentioned long handle portion is provided with through hole 21, and described long handle portion becomes to be less than the acute angle of 90 ° with the junction of described short handle portion; Power transmission shaft 31 is flat, comprise the first connecting portion 31a and the second connecting portion 31b, during inactive state, the inwall of the length direction along above-mentioned long handle portion of above-mentioned the second connecting portion 31b and above-mentioned through hole 21 contacts, the first connecting portion 31a be arranged on through hole 21 when interior and its height lower than the height of through hole 21 upper and lower inwalls.Driving lever 3 is around the shaft 33 when rotate, and the inwall that the second connecting portion 31b of power transmission shaft 31 promotes through hole 21 moves above-mentioned long handle portion along its length, and then drives the inclined-plane 22 location triggered tripping mechanisms of short handle portion to thread off.Above-mentioned long handle portion and short handle portion also can be one-body molded, to form above-mentioned dropout sheet 2.
The first connecting portion 31a is different with the function of the second connecting portion 31b, and during inactive state, the inwall of the length direction along above-mentioned long handle portion of the second connecting portion 31b and above-mentioned through hole 21 contacts, and auxiliary above-mentioned dropout trigger equipment keeps stable.When electric leakage inductive component senses leakage current, iron core 6 horizontal movements, drive driving lever 3 to rotate, and then drive power transmission shaft 31 to rotate, power transmission shaft 31 promotes through holes 21 and along the inwall of above-mentioned long handle portion length direction, above-mentioned long handle portion is moved along its length, and because above-mentioned the first connecting portion 31a is arranged in through hole 21 and upper with through hole 21, below inwall has certain distance, that is: the first connecting portion 31a and above-mentioned through hole 21 have cushion space in the short transverse of through hole 21, during driving lever 3 33 rotation around the shaft, owing to there being above-mentioned cushion space, the first connecting portion 31a can not touch dropout sheet 2 in the short transverse of above-mentioned through hole 21, but promote in the longitudinal direction described dropout sheet 2 along moving horizontally on the length direction of its long handle portion by the second connecting portion 31b, and then drive short handle portion to trigger tripping mechanism dropout.By the power transmission shaft 31 of platypelloid type on above-mentioned driving lever 3 and coordinating of through hole 21 on described dropout sheet 2, the stable rotation of driving lever 3 has been changed into the horizontal movement of dropout sheet 2, the stability of rotating due to driving lever 3 is high, horizontal movement stability by the dropout sheet 2 of its triggering has obtained enhancing, makes the short handle portion of above-mentioned dropout sheet 2 can trigger reliably tripping mechanism and threads off.Therefore, this kind of driving lever 3 not only realized the stability of installing with the fit system of power transmission shaft 31, also improved the sensitivity triggering.
As shown in Fig. 5-6, above-mentioned long handle portion can be supported through fastened gathering sill 11 inside (as shown in Figure 5) that form by two shells 1, gathering sill 11 is parallel to described iron core 6, when 33 rotation around the shaft of above-mentioned power transmission shaft 31, can promote the inwall of through hole 21, thus drive dropout sheet 2 with and long handle portion in the interior motion of above-mentioned gathering sill 11.Above-mentioned 11 pairs of dropout sheets 2 of gathering sill play an effect of supporting and leading, and guarantee position and the mobile reliability of dropout sheet 2.
In the present embodiment, for the sheet overall structure that makes to thread off compacter, angle between above-mentioned long handle portion and short handle portion is less than 90 °, its effect is when the horizontal movement of long handle portion, the conversion of motion of its length direction is for becoming the motion of the short handle portion of specific acute angle angle with length direction, thereby make the tripping mechanism to be triggered can be along the length direction setting of described long handle portion, effectively utilize upper and lower space, shortened the area occupied of length direction, thereby make device space utilization of the present utility model reasonable, compact conformation.
Further, the length that above-mentioned power transmission shaft 31 is set is less than 5mm.
When above-mentioned dropout sheet 2 moves horizontally, drive its short handle portion to move right to the right, the inclined-plane 22 of its short handle portion promotes couple axle 4 and moves upward, and breaker body is disconnected, thereby cut off the electricity supply, and plays earth leakage protective effect.
Above-mentioned breaker body, as the C65 miniature circuit breaker that Schneider is produced, the dropout trigger equipment of the present embodiment improves and forms for the principle of the electric leakage module tripping mechanism being used in conjunction with C65 miniature circuit breaker just.
As a kind of distortion of the present embodiment, the shape of above-mentioned through hole 21 can be arranged to circular hole or square hole or other can realize the hole shape of identical function.
As a kind of improvement to the present embodiment, as shown in Figure 2, annular protuberance is arranged in the end of iron core connecting portion 61, the removal hole 35 that installing hole 32 has interface channel 34 and is connected with interface channel 34, the internal diameter of removal hole 35 is greater than the internal diameter of installing hole 32 and interface channel 34, as shown in Figure 2, above-mentioned protuberance just can be fit into from removal hole 35, then along interface channel 34, move up, and then enter the inside of installing hole 32, because the internal diameter of installing hole 32 is less than the internal diameter of removal hole 35, above-mentioned protuberance can not be pulled out from installing hole 32 above, thereby can transmit the pulling force of iron core 6, pulling driving lever 3 to rotate around it axle 33 rotates, above-mentioned improvement can make the easier driving lever 3 that is fit into of iron core connecting portion 61, and transmission stability is better, at this, interface channel 34 is straight channel, be more convenient for installing.
Obviously, above-described embodiment is only for example is clearly described, and the not restriction to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all execution modes.And the apparent variation of being extended out thus or change are still among the protection range in the invention.
Claims (9)
1. the dropout trigger equipment of a Minitype electrical leakage breaker, it is characterized in that: comprise shell (1), be arranged on electric leakage inductive component, the driving member in described shell (1) and be suitable for triggering the triggering part that tripping mechanism is threaded off, described electric leakage inductive component produces horizontal impulse after sensing the leakage current of specific size, described driving member rotates under the effect of described horizontal impulse, and described triggering part is subject to the rotary action of described driving member to drive triggering tripping mechanism to thread off.
2. the dropout trigger equipment of Minitype electrical leakage breaker according to claim 1, it is characterized in that: described driving member comprises driving lever (3), described driving lever (3) has installing hole (32), rotating shaft (33) and power transmission shaft (31), and described driving lever (3) is arranged in described shell (1) by described rotating shaft (33) is rotating; Described electric leakage inductive component has iron core connecting portion (61) that can horizontal movement under the effect of described horizontal impulse, described iron core connecting portion (61) is arranged in described installing hole (32) becomes an interlock integral body with described driving lever (3), and in short transverse, form buffer gap with described installing hole (32), make described iron core connecting portion (61) under the effect of described horizontal impulse, can drive described driving lever (3) to rotate around described rotating shaft (33).
3. the dropout trigger equipment of Minitype electrical leakage breaker according to claim 2, it is characterized in that: described triggering part comprises dropout sheet (2), described dropout sheet (2) has short handle portion and the long handle portion that becomes special angle to be fixedly connected with described short handle portion, and the free end of described long handle portion is provided with through hole (21); Described power transmission shaft (31) comprises the first connecting portion (31a) and the second connecting portion (31b), during inactive state, the inwall of the length direction along described long handle portion of described the second connecting portion (31b) and described through hole (21) contacts, and described the first connecting portion (31a) is arranged in described through hole (21) and has certain distance with described through hole (21) upper and lower inwall; When described driving lever (3) rotates around described rotating shaft (33), the inwall that second connecting portion (31b) of described power transmission shaft (31) promotes described through hole (21) moves described long handle portion along its length, and then drives described short handle portion to trigger described tripping mechanism to thread off.
4. the dropout trigger equipment of Minitype electrical leakage breaker according to claim 3, is characterized in that: the described certain degree forming between described short handle portion and described long handle portion becomes to be less than the acute angle of 90 °.
5. the dropout trigger equipment of Minitype electrical leakage breaker according to claim 4, is characterized in that: the removal hole (35) that described installing hole (32) has interface channel (34) and is connected with described interface channel (34).
6. the dropout trigger equipment of Minitype electrical leakage breaker according to claim 5, is characterized in that: described through hole (21) is circular port or square opening.
7. the dropout trigger equipment of Minitype electrical leakage breaker according to claim 6, it is characterized in that: on described shell (1), be provided with gathering sill (11), described gathering sill (11) is for supporting described long handle portion, and described gathering sill (11) is parallel to the direction of motion of described iron core (6).
8. the dropout trigger equipment of Minitype electrical leakage breaker according to claim 7, is characterized in that: described long handle portion and described short handle portion are one-body molded.
9. according to the dropout trigger equipment of the Minitype electrical leakage breaker described in any one in claim 1-8, it is characterized in that: described electric leakage inductive component comprises and is arranged in described shell (1) and the zero-sequence transformer being electrically connected to, wiring board (7), controlled silicon conducting and tripping coil (5), described tripping coil (5) produces described horizontal impulse under the effect of leakage current, the iron core (6) that can be pulled by described horizontal impulse is installed in described tripping coil (5) inside, described iron core (6) drives described driving member to rotate by described iron core connecting portion (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320571614.6U CN203503578U (en) | 2013-09-16 | 2013-09-16 | Tripping trigger device for small residual-current circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320571614.6U CN203503578U (en) | 2013-09-16 | 2013-09-16 | Tripping trigger device for small residual-current circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203503578U true CN203503578U (en) | 2014-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320571614.6U Withdrawn - After Issue CN203503578U (en) | 2013-09-16 | 2013-09-16 | Tripping trigger device for small residual-current circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203503578U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441047A (en) * | 2013-09-16 | 2013-12-11 | 安德利集团有限公司 | Tripping trigger device for small residual-current circuit breaker |
| CN107452565A (en) * | 2017-08-29 | 2017-12-08 | 华通机电股份有限公司 | Small-sized earth leakage protective device |
| CN108493074A (en) * | 2018-05-25 | 2018-09-04 | 温州华嘉电器有限公司 | A kind of earth leakage circuit breaker |
| WO2022135037A1 (en) * | 2020-12-25 | 2022-06-30 | 浙江奥来电器有限公司 | Electrical leakage tripping mechanism of circuit breaker |
-
2013
- 2013-09-16 CN CN201320571614.6U patent/CN203503578U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441047A (en) * | 2013-09-16 | 2013-12-11 | 安德利集团有限公司 | Tripping trigger device for small residual-current circuit breaker |
| CN103441047B (en) * | 2013-09-16 | 2015-05-20 | 安德利集团有限公司 | Tripping trigger device for small residual-current circuit breaker |
| CN107452565A (en) * | 2017-08-29 | 2017-12-08 | 华通机电股份有限公司 | Small-sized earth leakage protective device |
| CN107452565B (en) * | 2017-08-29 | 2019-12-06 | 华通机电股份有限公司 | Small-sized leakage protector |
| CN108493074A (en) * | 2018-05-25 | 2018-09-04 | 温州华嘉电器有限公司 | A kind of earth leakage circuit breaker |
| WO2022135037A1 (en) * | 2020-12-25 | 2022-06-30 | 浙江奥来电器有限公司 | Electrical leakage tripping mechanism of circuit breaker |
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