CN203674118U - Over and under voltage protection device of a miniature circuit breaker - Google Patents
Over and under voltage protection device of a miniature circuit breaker Download PDFInfo
- Publication number
- CN203674118U CN203674118U CN201320781879.9U CN201320781879U CN203674118U CN 203674118 U CN203674118 U CN 203674118U CN 201320781879 U CN201320781879 U CN 201320781879U CN 203674118 U CN203674118 U CN 203674118U
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- Prior art keywords
- circuit breaker
- rotation
- fixed
- overvoltage
- moving contact
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 19
- 230000001681 protective effect Effects 0.000 claims description 39
- 238000001914 filtration Methods 0.000 claims description 10
- 230000009191 jumping Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
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Abstract
The utility model provides an over and under voltage protection device of a miniature circuit breaker which includes an adapting part, a lock catch, a torsional spring, a tension spring, an operational element, a connecting rod, a tripping actuator and an over and under voltage protection circuit plate; the adapting part includes a adapting piece as well as a jumping pin and a moving contact which are fixed on the adapting piece; one end of the tension spring is fixed on and exerts a natural pull to the moving contact; when the circuit voltage is greater than the predetermined upper limit value or is less than the predetermined lower limit value, the over and under voltage protection circuit plate is conductive, and a driving iron core of the tripping actuator drives the rotation of the lock latch to make the breaker move from a conductive state to a disconnected state. The over and under voltage protection device of the miniature circuit breaker and includes an adapting part is provided by the utility model with simple structure as well as high security and responsibility.
Description
Technical field
The utility model relates to field of circuit breakers, is specifically related to a kind of overvoltage/undervoltage protective device of miniature circuit breaker.
Background technology
Circuit breaker is usually used in the places such as industry, business and house, under actual application scenario, needs a kind of overvoltage/undervoltage protective device being used in conjunction with circuit breaker.
Chinese patent application publication No. CN102237228A discloses a kind of overvoltage/undervoltage protective device of miniature circuit breaker, shown in Figure 1, comprise overvoltage-undervoltage protector housing 1, overvoltage/undervoltage dropout driver 2, lever 3 and button 4, in overvoltage/undervoltage dropout driver 2, be provided with iron core 5, button 4 is provided with open slot 6, the lower end of lever 3 is corresponding with iron core 5, the upper end of lever 3 is dihedral, the upper end of lever 3 is corresponding with open slot 6 and can snap in described open slot 6, in open slot 6 on button 4, be provided with locating piece 7, locating piece 7 is positioned on the movement locus of lever 3 upper ends, on the movement locus of the lower end side that locating piece 7 can limit the angle position of lever 3 and ensure lever 3 in iron core 5.When in circuit there is overvoltage or under-voltage signal time; overvoltage/undervoltage dropout driver 2 drives iron core 5 outwards to move, and applies a thrust left to lever 3, and lever 3 is turned clockwise; the upper end of lever 3 is withstood in the bottom of button 4, thereby makes this overvoltage/undervoltage protective device in off-state.
But the overvoltage/undervoltage protective device of this circuit breaker is in the time cutting off circuit breaker; because torsion spring 10 has applied an active force that impels lever 3 to be rotated counterclockwise to lever 3; therefore; in cut-out circuitry processes; the thrust of iron core 5 need to overcome the active force of torsion spring 10, just can guarantee to make circuit breaker power-off in overvoltage/undervoltage situation.Therefore, likely, in some overvoltage/undervoltage situation, iron core 5 does not overcome the active force of torsion spring 10 to lever 3 to the thrust of lever 3, and now circuit can't be in off-state, cannot protective circuit load.
Utility model content
For above-mentioned prior art, the utility model provides a kind of overvoltage/undervoltage protective device of miniature circuit breaker, comprising:
Adaptor, described adaptor comprises connector and is fixed on tripping and the moving contact on described connector, described connector has rotating shaft and the first stiff end and the second stiff end that are positioned at the relative both sides of described rotating shaft, described moving contact is fixed on described the first stiff end, described tripping is fixed on described the second stiff end, and described moving contact has when the primary importance of described circuit breaker in conducting state with when the second place of described circuit breaker in off-state;
Snap close, described snap close has the rotating hole for holding described rotating shaft, and described rotating shaft is located in described rotating hole described snap close is rotated around described rotating shaft;
Torsion spring, described torsion spring set is located on described rotating shaft, described torsion spring has the first rotary terminal and the second rotary terminal, described the first rotary terminal applies an active force around described axial rotary the first direction of rotation rotation to described snap close, described the second rotary terminal applies an active force around described axial rotary the second direction of rotation rotation to described connector, and described the first direction of rotation is contrary with the second direction of rotation;
Extension spring, one end of described extension spring is fixed on described moving contact, and moving contact is applied to a pulling force around the second direction of rotation rotation described in described axial rotary;
Operating parts, described operating parts has when the conduction position of described circuit breaker in conducting state with when the open position of described circuit breaker in off-state;
Gangbar, one end of described gangbar is fixed in described tripping, and the other end of described gangbar is fixed on described operating parts, and described gangbar applies an active force around described axial rotary the first direction of rotation rotation to described tripping;
Wherein, when described moving contact is positioned at described primary importance, and described snap close is applied after an active force around the second direction of rotation rotation described in described axial rotary, described moving contact moves to the described second place from described primary importance, and described operating parts moves to described open position from described conduction position simultaneously; And
In the time described operating parts being applied to an active force and make it move to described conduction position from described open position, described moving contact moves to described primary importance from the described second place.
Preferably, described adaptor also comprises the first rivet and the second rivet, and described moving contact is fixed on described the first stiff end by described the first rivet, and described tripping is fixed on described the second stiff end by described the second rivet.
Preferably, described operating parts comprises operation body and is fixed on the operating grip in described operation body outside, the other end of described gangbar is fixed on described operation body, described operation body has operative axis, described operation body and operating grip are rotated around described operative axis, in the time that described operating grip rotates to described the second direction of rotation around described operative axis with operation body, described operating grip drives described tripping around the first direction of rotation rotation described in described axial rotary by described gangbar, in the time that described operating grip rotates to described the first direction of rotation around described operative axis with operation body, described operating grip drives described tripping around the second direction of rotation rotation described in described axial rotary by described gangbar.
Preferably, the overvoltage/undervoltage protective device of described miniature circuit breaker also comprises the handle set bar being fixed on described operating grip.
Preferably, the overvoltage/undervoltage protective device of described miniature circuit breaker also comprises the set bar being fixed on described snap close.
Preferably, the overvoltage/undervoltage protective device of described miniature circuit breaker also comprises: dropout driver, and described dropout driver comprises driving iron core and drive coil, fixed contact, described fixed contact is electrically connected with described drive coil, and over under-voltage protection circuit plate, described over under-voltage protection circuit plate comprises input cable and output cable, the output cable of described over under-voltage protection circuit plate and the electrical connection of described drive coil, described over under-voltage protection circuit plate is for gathering the magnitude of voltage of the circuit that described circuit breaker protects, when described magnitude of voltage is greater than predetermined higher limit or is less than predetermined lower limit, and when described fixed contact contacts with described moving contact, the conducting of described over under-voltage protection circuit plate, thereby make the charged generation of described drive coil magnetic field control described driving iron core motion, and make described driving iron core apply an active force around described axial rotary the second direction of rotation rotation to described snap close.
Preferably, the overvoltage/undervoltage protective device of described miniature circuit breaker also comprises filtering magnet ring, and described filtering magnet ring is set on the input cable and output cable of described over under-voltage protection circuit plate.
The overvoltage/undervoltage protective device of miniature circuit breaker of the present utility model can be guaranteed, in the time that over voltage situation appears in circuit, to make circuit breaker move to off-state from conducting state, thereby has guaranteed the safety of circuit load.
The overvoltage/undervoltage protective device of miniature circuit breaker of the present utility model can make circuit breaker move to off-state from conducting state according to the overvoltage in circuit or under-voltage signal.
Brief description of the drawings
Referring to accompanying drawing, the utility model embodiment is described further, wherein:
Fig. 1 is the structural representation of the overvoltage/undervoltage protective device of circuit breaker of the prior art.
Fig. 2 is the overvoltage/undervoltage protective device of miniature circuit breaker of the utility model preferred embodiment structural representation under conducting state.
Fig. 3 is that the overvoltage/undervoltage protective device of the miniature circuit breaker shown in Fig. 2 is at the structural representation of removal operating parts.
Fig. 4 is the overvoltage/undervoltage protective device of the miniature circuit breaker shown in Fig. 2 structural representation under off-state.
Fig. 5 is the sectional perspective decomposing schematic representation of the overvoltage/undervoltage protective device of the miniature circuit breaker shown in Fig. 2.
Fig. 6 is the floor map after the snap close shown in Fig. 5 and adaptor assembling.
Fig. 7 is the overvoltage/undervoltage protective device of miniature circuit breaker of the present utility model schematic perspective view under conducting state.
Main device symbol description
1 torsion spring 2 rotary terminals
3 rotary terminal 4 snap closes
5 rotating hole 6 trippings
7 rotating shaft 8 second terminals
9 the first terminal 10 rivets
11 rivet 12 moving contacts
13 extension spring 14 adaptors
15 connector 16 sleeves
17 operating grips 18 operate body
19 gangbar 20 fixed contacts
21 drive iron core 22 to export cable
23 filtering magnet ring 24 over under-voltage protection circuit plates
25 input cable 26 filtering magnet rings
27 housing 28 dropout drivers
29 operating parts 30 handle set bars
31 set bar 32 bar holes
33 operation torsion springs 34 operate axostylus axostyle
35 dead bolt 36 locked grooves
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage are clearer, the utility model are further described by specific embodiment below in conjunction with accompanying drawing.
Fig. 2 and Fig. 4 are respectively the overvoltage/undervoltage protective device of the miniature circuit breaker schematic perspective views under conducting state and off-state, and Fig. 3 is that the overvoltage/undervoltage protective device of the miniature circuit breaker shown in Fig. 2 is at the structural representation of removing operating parts.As in Figure 2-4; the overvoltage/undervoltage protective device of miniature circuit breaker comprises housing 27, dropout driver 28, fixed contact 20, over under-voltage protection circuit plate 24, operating parts 29 and operation torsion spring 33, also comprises that snap close 4, adaptor 14, torsion spring 1 and extension spring 13(are referring to shown in Fig. 5 and Fig. 6).Operating parts 29 comprises operation body 18 and operating grip 17, and operation body 18 is roughly cylindrical shape, and operation body 18 center has operative axis (not shown).On housing 27, be fixed with operation axostylus axostyle 34, operation torsion spring 33 is set on operation axostylus axostyle 34, and operation body 18 is set on operation axostylus axostyle 34, and operation axostylus axostyle 34 and operation body 18 have identical axis.Operation torsion spring 33 and operation body 18 can turn clockwise or be rotated counterclockwise around its operative axis, operating grip 17 is fixed on the lateral wall of operation body 18, and can and operation body 18 together with clockwise or be rotated counterclockwise, operation torsion spring 33 applies an active force turning clockwise to operating body 18.In the present embodiment, operating grip 17 is positioned at outside housing 27, and dropout driver 28, fixed contact 20, over under-voltage protection circuit plate 24, operation body 18, snap close 4, adaptor 14, torsion spring 1 and extension spring 13 are all arranged in housing 27.Dropout driver 28 comprises drive coil (not shown) and drives iron core 21, drive iron core 21 to be roughly cylindrical shape, and can be in the situation that drive coil energising produces magnetic field, move along its axis direction, on dropout driver 28, be fixed with fixed contact 20, fixed contact 20 and drive coil electrical connection.Over under-voltage protection circuit plate 24 comprises input cable 25 and output cable 22, output cable 22 and drive coil electrical connection, and input cable 25 and moving contact 12 are electrically connected.On input cable 25 and output cable 22, be arranged with respectively filtering magnet ring 23 and filtering magnet ring 26, the circuit breaker misoperation that filtering magnet ring 23 and filtering magnet ring 26 can effectively avoid Electric Network Higher Harmonic to cause.Over under-voltage protection circuit plate 24 detects the magnitude of voltage in the circuit that circuit breaker protects; and judge that whether this magnitude of voltage is higher than certain predetermined higher limit (overvoltage) or lower than certain predetermined lower limit (under-voltage); when the magnitude of voltage detecting is higher than predetermined higher limit or lower than predetermined lower limit; and when fixed contact 20 contacts with moving contact 12; 24 conductings of over under-voltage protection circuit plate; drive coil in dropout driver 28 obtains electric, and the drive coil in dropout driver 28 produces magnetic field and makes to drive iron core 21 to move along its axis direction.
Fig. 5 is the sectional perspective decomposing schematic representation of the overvoltage/undervoltage protective device of the miniature circuit breaker shown in Fig. 2.Fig. 6 is the floor map after the snap close shown in Fig. 5 and adaptor assembling.As shown in Figure 5 and Figure 6, adaptor 14 comprises connector 15, tripping 6 and moving contact 12, and connector 15 has rotating shaft 7 and is distributed in the first terminal 9 and second terminal 8 of the relative both sides of rotating shaft 7, and rotating shaft 7 has axis L.Tripping 6 is fixed on the second terminal 8 by rivet 10, and tripping 6 can be rotated with respect to the second terminal 8 taking rivet 10 as axle, on the limit, left side of tripping 6, has dead bolt 35, and dead bolt 35 is near snap close 4.Moving contact 12 is fixed on the first terminal 9 by rivet 11.One end of extension spring 13 is fixed on moving contact 12, and the other end is fixed on housing 27 and to moving contact 12 and applies a pulling force, and this pulling force makes the moving contact 12 can be around rotating shaft 7(or axis L) be rotated counterclockwise.On snap close 4, there is sleeve 16 and be positioned at the locked groove 36 of the upper end of snap close 4, sleeve 16 has rotating hole 5 on axis L, the diameter of rotating hole 5 is greater than the external diameter of rotating shaft 7, rotating shaft 7 is located in rotating hole 5, thereby make the snap close 4 also can be around axis L clockwise or be rotated counterclockwise, snap close 4 is positioned in the direction of motion that drives iron core 21, and the bottom of snap close 4 is near fixed contact 20.When after snap close 4 and adaptor 14 assemblings, as shown in Figure 6, the upper end of snap close 4 and tripping 6 are in contact with one another, and dead bolt 35 is arranged in locked groove 36.In other embodiment, on snap close 4, also can not there is sleeve 16, but directly on snap close 4, there is the hole for holding rotating shaft 7, rotating shaft 7 is located in this hole.Torsion spring 1 has rotary terminal 2 and rotary terminal 3, torsion spring 1 is set on the outside of sleeve 16, and rotary terminal 3 is contacted with snap close 4, make rotary terminal 2 contact with connector 15 simultaneously, under the elastic deformation of torsion spring 1, rotary terminal 3 applies an active force that can turn clockwise around axis L to snap close 4, and rotary terminal 2 applies an active force that can be rotated counterclockwise around axis L to connector 15.One end of gangbar 19 is connected with tripping 6, and the other end of gangbar 19 is connected with the outside of operation body 18.In the time that operating grip 17 turns clockwise with operation body 18, under the effect of gangbar 19, drive tripping 6 to be rotated counterclockwise, or in the time that operating grip 17 is rotated counterclockwise with operation body 18, drive tripping 6 to turn clockwise by gangbar 19.Moving contact 12 in the overvoltage/undervoltage protective device of miniature circuit breaker of the present utility model and fixed contact 20 are in contact with one another and represent that circuit breaker is in conducting state, and now moving contact 12 is in primary importance, and operating grip 17 is in conduction position; Moving contact 12 and fixed contact 20 separately represent that circuit breaker is in off-state, and now moving contact 12 is in the second place, and operating grip 17 is in open position.
In Fig. 2, the rotary terminal 3 of torsion spring 1 applies an active force that snap close 4 is turned clockwise to snap close 4, the rotary terminal 2 of torsion spring 1 applies an active force that connector 15 is rotated counterclockwise to connector 15 simultaneously, extension spring 13 applies an active force that moving contact 12 is rotated counterclockwise to moving contact 12, thereby make tripping 6 apply one by gangbar 19 to operation body 18 and make to operate the active force that body 18 and operating grip 17 are rotated counterclockwise, at the conduction position shown in Fig. 2, housing 27 contacts and limits operating grip 17 with operating grip 17 and is rotated counterclockwise, thereby make operating parts 29 be stabilized in conduction position.When the magnitude of voltage overvoltage in circuit or when under-voltage, now drive iron core 21 to move and back down snap close 4 along its axis direction, make to be rotated counterclockwise together with the rotary terminal 3 of snap close 4 and torsion spring 1, snap close 4 and tripping 6 are separately, and dead bolt 35 and locked groove 36 are separately, now gangbar 19, in free state, under the active force turning clockwise operation body 18 being applied at operation torsion spring 33, causes operating grip 17 to turn clockwise.In the process being rotated counterclockwise at snap close simultaneously, torsion spring 1 is compressed increases the active force that the rotary terminal 2 of torsion spring 1 applies connector 15, under the pulling force of extension spring 13, adaptor 14 is rotated counterclockwise, drive tripping 6 to be rotated counterclockwise, final fixed contact 20 and moving contact 12 separately, make circuit breaker be switched to off-state from conducting state simultaneously, under off-state, dead bolt 35 is arranged in locked groove 36 again.Being switched to from conducting state off-state process, because extension spring 13 applies a pulling force to moving contact 12, make moving contact 12 more easily and fixed contact 20 separates, under overvoltage or undervoltage condition, guarantee that circuit breaker moves to off-state from conducting state.
Fig. 4 is the overvoltage/undervoltage protective device of the miniature circuit breaker schematic perspective view under off-state.Fixed contact 20 and moving contact 12 are separated from each other, operating grip 17 is positioned at the right side of operative axis, be that operating grip 17 is in open position, now tripping 6 applies one by gangbar 19 to operation body 18 and makes to operate the active force that body 18 and operating grip 17 turn clockwise, operate torsion spring 33 simultaneously operation body 18 is applied to an active force turning clockwise around operative axis, housing 27 and operating grip 17 contact and have limited operating grip 17 and turn clockwise.Do not having under External Force Acting, moving contact 12 and fixed contact 20 keep separated position.In reseting procedure, operating grip 17 is applied to a thrust left, the thrust of being rotated counterclockwise to operating grip 17, operation body 18 is rotated counterclockwise around its operative axis, under the effect of gangbar 19, drive tripping 6, moving contact 12, together with the rotary terminal 2 of connector 15 and torsion spring 1, turn clockwise, the active force of the rotary terminal 3 that has increased torsion spring 1 in rotary terminal 2 turns clockwise process to snap close 4, thereby snap close 4 is turned clockwise, final snap close 4 turns clockwise together with adaptor 14, moving contact 12 is contacted with fixed contact 20, come back to the state shown in Fig. 2.
Fig. 7 is the overvoltage/undervoltage protective device of miniature circuit breaker of the present utility model schematic perspective view under conducting state.As shown in Figure 7, on operating grip 17, be fixed with handle set bar 30, operating grip 17 and handle set bar 30 are positioned at the outside of housing 27, wherein the handle (not shown) of handle set bar 30 and circuit breaker is connected, and in disconnection or reseting procedure, together with the handle of handle set bar 30 and circuit breaker, links.On snap close 4, be fixed with set bar 31, in the bar hole 32 of set bar 31 from housing 27, stretch out and be positioned at the outside of housing 27.The snap close (not shown) of set bar 31 and circuit breaker is connected, and in disconnection or reseting procedure, together with the snap close of set bar 31 and circuit breaker, links.The overvoltage/undervoltage protective device of miniature circuit breaker of the present utility model can synchronously be controlled the operating state of circuit breaker.
Although the utility model is described by preferred embodiment, but the utility model is not limited to embodiment as described herein, also comprises various changes and the variation done in the situation that not departing from the utility model scope.
Claims (7)
1. an overvoltage/undervoltage protective device for miniature circuit breaker, is characterized in that, comprising:
Adaptor, described adaptor comprises connector and is fixed on tripping and the moving contact on described connector, described connector has rotating shaft and the first stiff end and the second stiff end that are positioned at the relative both sides of described rotating shaft, described moving contact is fixed on described the first stiff end, described tripping is fixed on described the second stiff end, and described moving contact has when the primary importance of described circuit breaker in conducting state with when the second place of described circuit breaker in off-state;
Snap close, described snap close has the rotating hole for holding described rotating shaft, and described rotating shaft is located in described rotating hole described snap close is rotated around described rotating shaft;
Torsion spring, described torsion spring set is located on described rotating shaft, described torsion spring has the first rotary terminal and the second rotary terminal, described the first rotary terminal applies an active force around described axial rotary the first direction of rotation rotation to described snap close, described the second rotary terminal applies an active force around described axial rotary the second direction of rotation rotation to described connector, and described the first direction of rotation is contrary with the second direction of rotation;
Extension spring, one end of described extension spring is fixed on described moving contact, and moving contact is applied to a pulling force around the second direction of rotation rotation described in described axial rotary;
Operating parts, described operating parts has when the conduction position of described circuit breaker in conducting state with when the open position of described circuit breaker in off-state;
Gangbar, one end of described gangbar is fixed in described tripping, and the other end of described gangbar is fixed on described operating parts, and described gangbar applies an active force around described axial rotary the first direction of rotation rotation to described tripping;
Wherein, when described moving contact is positioned at described primary importance, and described snap close is applied after an active force around the second direction of rotation rotation described in described axial rotary, described moving contact moves to the described second place from described primary importance, and described operating parts moves to described open position from described conduction position simultaneously; And
In the time described operating parts being applied to an active force and make it move to described conduction position from described open position, described moving contact moves to described primary importance from the described second place.
2. the overvoltage/undervoltage protective device of miniature circuit breaker according to claim 1; it is characterized in that; described adaptor also comprises the first rivet and the second rivet; described moving contact is fixed on described the first stiff end by described the first rivet, and described tripping is fixed on described the second stiff end by described the second rivet.
3. the overvoltage/undervoltage protective device of miniature circuit breaker according to claim 1, it is characterized in that, described operating parts comprises operation body and is fixed on the operating grip in described operation body outside, the other end of described gangbar is fixed on described operation body, described operation body has operative axis, described operation body and operating grip are rotated around described operative axis, in the time that described operating grip rotates to described the second direction of rotation around described operative axis with operation body, described operating grip drives described tripping around the first direction of rotation rotation described in described axial rotary by described gangbar, in the time that described operating grip rotates to described the first direction of rotation around described operative axis with operation body, described operating grip drives described tripping around the second direction of rotation rotation described in described axial rotary by described gangbar.
4. the overvoltage/undervoltage protective device of miniature circuit breaker according to claim 1, is characterized in that, the overvoltage/undervoltage protective device of described miniature circuit breaker also comprises the handle set bar being fixed on described operating grip.
5. the overvoltage/undervoltage protective device of miniature circuit breaker according to claim 1, is characterized in that, the overvoltage/undervoltage protective device of described miniature circuit breaker also comprises the set bar being fixed on described snap close.
6. according to the overvoltage/undervoltage protective device of the miniature circuit breaker described in claim 1 to 5 any one, it is characterized in that, the overvoltage/undervoltage protective device of described miniature circuit breaker also comprises:
Dropout driver, described dropout driver comprises driving iron core and drive coil;
Fixed contact, described fixed contact is electrically connected with described drive coil;
Over under-voltage protection circuit plate, described over under-voltage protection circuit plate comprises input cable and output cable, the output cable of described over under-voltage protection circuit plate and the electrical connection of described drive coil, described over under-voltage protection circuit plate is for gathering the magnitude of voltage of the circuit that described circuit breaker protects, when described magnitude of voltage is greater than predetermined higher limit or is less than predetermined lower limit, and when described fixed contact contacts with described moving contact, the conducting of described over under-voltage protection circuit plate, make described drive coil charged and produce magnetic field and control the motion of described driving iron core, and make described driving iron core apply an active force around described axial rotary the second direction of rotation rotation to described snap close.
7. the overvoltage/undervoltage protective device of miniature circuit breaker according to claim 6; it is characterized in that; the overvoltage/undervoltage protective device of described miniature circuit breaker also comprises filtering magnet ring, and described filtering magnet ring is set on the input cable and output cable of described over under-voltage protection circuit plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320781879.9U CN203674118U (en) | 2013-12-02 | 2013-12-02 | Over and under voltage protection device of a miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320781879.9U CN203674118U (en) | 2013-12-02 | 2013-12-02 | Over and under voltage protection device of a miniature circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203674118U true CN203674118U (en) | 2014-06-25 |
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ID=50970385
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320781879.9U Expired - Lifetime CN203674118U (en) | 2013-12-02 | 2013-12-02 | Over and under voltage protection device of a miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203674118U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105609386A (en) * | 2016-03-15 | 2016-05-25 | 佳一电气有限公司 | Control and protection switching device |
| CN105609385A (en) * | 2016-03-15 | 2016-05-25 | 佳一电气有限公司 | Multifunctional terminal electric appliance |
| CN107123577A (en) * | 2017-07-01 | 2017-09-01 | 中欧电气有限公司 | Small intelligent permanent-magnet breaker |
| CN107293456A (en) * | 2016-04-11 | 2017-10-24 | 通用电气公司 | Circuit-breaker including tripping mechanism |
| CN107293457A (en) * | 2016-04-12 | 2017-10-24 | 上海良信电器股份有限公司 | A kind of contact system structure-improved of breaker |
-
2013
- 2013-12-02 CN CN201320781879.9U patent/CN203674118U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105609386A (en) * | 2016-03-15 | 2016-05-25 | 佳一电气有限公司 | Control and protection switching device |
| CN105609385A (en) * | 2016-03-15 | 2016-05-25 | 佳一电气有限公司 | Multifunctional terminal electric appliance |
| CN105609385B (en) * | 2016-03-15 | 2018-02-09 | 佳一电气有限公司 | Multi-functional terminal end electrical equipment |
| CN105609386B (en) * | 2016-03-15 | 2018-10-23 | 佳一电气有限公司 | Control and protective switching device |
| CN107293456A (en) * | 2016-04-11 | 2017-10-24 | 通用电气公司 | Circuit-breaker including tripping mechanism |
| CN107293456B (en) * | 2016-04-11 | 2020-08-14 | Abb瑞士股份有限公司 | Circuit breaker including trip mechanism |
| CN107293457A (en) * | 2016-04-12 | 2017-10-24 | 上海良信电器股份有限公司 | A kind of contact system structure-improved of breaker |
| CN107123577A (en) * | 2017-07-01 | 2017-09-01 | 中欧电气有限公司 | Small intelligent permanent-magnet breaker |
| CN107123577B (en) * | 2017-07-01 | 2019-11-08 | 中欧电气有限公司 | Small intelligent permanent-magnet breaker |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140625 |