CN111863550A - Circuit breaker convenient to carry spare part of installation in case of overload damage - Google Patents
Circuit breaker convenient to carry spare part of installation in case of overload damage Download PDFInfo
- Publication number
- CN111863550A CN111863550A CN202010829162.1A CN202010829162A CN111863550A CN 111863550 A CN111863550 A CN 111863550A CN 202010829162 A CN202010829162 A CN 202010829162A CN 111863550 A CN111863550 A CN 111863550A
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- Prior art keywords
- rod
- groove
- circuit breaker
- butt joint
- device body
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/025—Constructional details of housings or casings not concerning the mounting or assembly of the different internal parts
- H01H71/0257—Strength considerations
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0264—Mountings or coverplates for complete assembled circuit breakers, e.g. snap mounting in panel
- H01H71/0271—Mounting several complete assembled circuit breakers together
Abstract
The invention discloses a circuit breaker convenient for carrying and mounting spare parts to prevent overload damage, which comprises a breaker body, a rear cover, a gear and a screw rod, wherein the rear side of the breaker body is provided with the rear cover, a mounting rod is positioned in a mounting groove, the end part of the rear cover is fixedly provided with a protective plate, a protective plate is arranged in a telescopic groove, the outer side of the protective plate is fixedly provided with a shifting head, the edge of the front side of the breaker body is connected with a first movable rod through a shaft, one side of the breaker body is provided with a retraction groove, a butt joint rod is arranged in the retraction groove, and the edge of the front side of the breaker body, far away from the first movable rod, is connected. This spare part of portable installation is with circuit breaker in case overload damage can dismantle the installation fast to the circuit breaker under the condition that lacks the instrument, is convenient for change the internal damage part, and the convenience is carried out the composite set installation to a plurality of circuit breakers simultaneously, is convenient for dismantle fast single circuit breaker in narrow and small space simultaneously.
Description
Technical Field
The invention relates to the technical field of circuit breakers, in particular to a circuit breaker which is convenient to carry and install spare parts to prevent overload damage.
Background
The circuit breaker is a switching device in a circuit system, can close, bear and break current under the condition of a normal loop, and is internally composed of a contact system, an arc extinguishing system, an operating mechanism, a release and other parts;
the circuit breaker can be divided into a high-voltage circuit breaker and a low-voltage circuit breaker according to the application range of the circuit breaker, and in the application of the low-voltage circuit breaker, a molded case circuit breaker is generally adopted for switching operation, so that the circuit breaker has the advantages of small volume, convenience in carrying and wide application range, but the existing molded case circuit breaker has the following problems in use;
when the circuit breaker is used, particularly a molded case circuit breaker, a shell of the circuit breaker is mostly fixed by screws, and internal parts are easy to be damaged due to overload, so that the circuit breaker needs to be disassembled and maintained;
in moulded case circuit breaker's use, there are monopole, dipolar, tripolar and quadrupole etc. usually, for the installation under the different situation, adopt combination formula moulded case circuit breaker to carry out the field usage usually, but current circuit breaker adopts rod-type connected mode to fix the combination with a plurality of circuit breakers usually when carrying out the aggregate erection, such connected mode, in narrow and small installation space, if need change the quantity of circuit breaker, need dismantle whole combination get off and assemble the distribution again, troublesome poeration, and then need conveniently make up into the circuit breaker of arbitrary quantity.
Aiming at the problems, innovative design is urgently needed on the basis of the original circuit breaker.
Disclosure of Invention
The invention aims to provide a circuit breaker which is convenient to carry and install spare parts to prevent overload damage, and aims to solve the problems that the existing circuit breaker in the background art needs to be convenient to rapidly disassemble and assemble and needs to be conveniently combined into any number.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a circuit breaker convenient to spare part of portable installation is prevented overload damage, includes the ware body, back lid, gear and screw rod, the back lid is installed to the rear side of the ware body, and the top edge of the ware body rear side is fixed with the installation pole, the installation pole is located the mounting groove, and the mounting groove is seted up in the top edge of back lid, and there is the dead lever through spring coupling in the mounting groove, the end fixing of back lid has the protection shield, and the outside of protection shield has seted up the flexible groove, place the screening glass in the flexible groove, and the one end of screening glass is located the constant head tank, and the constant head tank is seted up on the back lid, the outside of screening glass is fixed with the shifting block, and the hub connection has the guide arm between the inboard of screening glass and the tip of dead lever, the edge hub connection of ware body front side has first movable rod, the gear shaft is connected inside the device body, a retraction groove is formed in one side of the device body and is located above the gear, a butt joint rod is placed in the retraction groove, a tooth block is fixed at the bottom of the butt joint rod, a slot is formed in the butt joint rod, a second movable rod is connected to the edge of the front side of the device body far away from the first movable rod in a shaft mode, one end of the second movable rod penetrates through the device body and is connected with a screw rod, the screw rod is connected to the inside of the side groove in a shaft mode, the side groove is formed in the inner wall of the butt joint groove, the butt joint groove is formed in one side of the device body far away from the retraction groove, and an insert.
Preferably, the fixing rod forms an elastic sliding structure between the spring and the mounting groove, the fixing rod is designed to be in a hook-shaped structure, and the end part of the fixing rod close to the mounting rod is designed to be in an inclined structure.
Preferably, the end of the fixing rod is engaged with the fixing groove, the fixing groove is opened on the inner side of the mounting rod, and the number of the mounting rod is 4 symmetrically arranged with respect to the device body.
Preferably, the protective plate and the section of the protective plate form a semicircular ring structure, and the number of the protective plate is symmetrically arranged about the central axis of the rear cover by 2.
Preferably, sliding connection between protection plate and the flexible groove, and the mutual block between tip and the constant head tank of protection plate.
Preferably, the retraction groove and the butt joint groove are vertically distributed on two sides of the device body, and the retraction groove and the butt joint groove are distributed at corresponding positions.
Preferably, the butt joint rod is connected with the retraction groove in a sliding mode, and the outer side of the butt joint rod is attached to the inner walls of the retraction groove and the butt joint groove.
Preferably, the tooth blocks are distributed at the bottom of the butt joint rod at equal intervals, and the tooth blocks and the gears are meshed with each other.
Preferably, the inserted bar is designed to be a rectangular structure, the cross-sectional area of the inserted bar is equal to that of the slot, and the inserted bar is perpendicular to the butt-joint bar.
Compared with the prior art, the invention has the beneficial effects that: the circuit breaker is convenient to carry and install spare parts to prevent overload damage;
1. the end part of the fixing rod, which is close to the mounting rod, is provided with a hook-shaped structure, is designed to be an inclined structure, so that when the device body and the rear cover are jointed, four mounting rods enter the mounting groove, the mounting rods are driven to slide in the mounting groove through the contact of the mounting rods and the inclined end parts of the fixing rods, the mounting rods can completely enter the mounting groove, meanwhile, the fixing rods form an elastic sliding structure through springs and the mounting groove, the end parts of the fixing rods are mutually clamped with the fixing groove, after the mounting rods completely enter the mounting groove, the mounting rods lose the limiting effect on the fixing rods, at the moment, under the action of the springs, the fixing rods pop out in the mounting groove, one end of each fixing rod is clamped into the fixing groove, the mounting rods are further locked, and the fixed connection of the device body and;
2. the protection plate and the protection plate are arranged to form a semicircular structure, the protection plate is connected with the telescopic groove in a sliding mode, and the end portion of the protection plate is clamped with the positioning groove;
3. the gear blocks are distributed at the bottom of the butt joint rod at equal intervals, and the gear blocks are meshed with the gears, so that after the two devices are attached, the first movable rod drives the gears to rotate, the gears are meshed and contacted with the gear blocks to drive the butt joint rod to slide in the retraction groove, the retraction groove corresponds to the distribution positions of the butt joint groove, the butt joint rod can slide into the butt joint groove, and the two devices are preliminarily mounted in a butt joint mode;
4. the plug rod is designed to be of a rectangular structure, the cross section area of the plug rod is equal to that of the slot, the plug rod is perpendicular to the butt joint rod, the second movable rod is rotated after the butt joint rod slides into the butt joint slot, the screw rod is driven to rotate in the side slot, the plug rod connected with the screw rod in a threaded mode can be driven to slide into the butt joint slot from the side slot through the screw rod, the plug rod is clamped into the slot in the butt joint rod, the butt joint rod is fixed in the butt joint slot through perpendicular matching of the butt joint slot and the plug rod, fixed combination between two device bodies is completed, the disassembly mode can be completed reversely according to the operation, only two device bodies need to be separated and taken out perpendicularly, and operation is convenient in a narrow space.
Drawings
FIG. 1 is a schematic front sectional view of the present invention;
FIG. 2 is an enlarged view of FIG. 1 of the present invention;
FIG. 3 is a schematic side sectional view of the rear cover of the present invention;
FIG. 4 is a schematic top sectional view of the protection plate according to the present invention;
FIG. 5 is a schematic side-sectional assembly of the device of the present invention;
FIG. 6 is a side sectional view of the body of the present invention;
fig. 7 is a schematic side sectional view of the gear of the present invention.
In the figure: 1. a body; 2. a rear cover; 3. mounting a rod; 4. mounting grooves; 5. a spring; 6. fixing the rod; 7. fixing grooves; 8. a protection plate; 9. a telescopic groove; 10. a protective sheet; 11. positioning a groove; 12. a shifting block; 13. a guide bar; 14. a first movable bar; 15. a gear; 16. a retraction slot; 17. a docking rod; 18. a tooth block; 19. a slot; 20. a second movable bar; 21. a screw; 22. a side groove; 23. inserting a rod; 24. and (4) butting the grooves.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Referring to fig. 1-7, the present invention provides a technical solution: a circuit breaker convenient for carrying and installing spare parts to prevent overload damage comprises a breaker body 1, a rear cover 2, an installation rod 3, an installation groove 4, a spring 5, a fixed rod 6, a fixed groove 7, a protection plate 8, a telescopic groove 9, a protection plate 10, a positioning groove 11, a shifting block 12, a guide rod 13, a first movable rod 14, a gear 15, a retraction groove 16, a butt joint rod 17, a tooth block 18, an insertion groove 19, a second movable rod 20, a screw rod 21, a side groove 22, an insertion rod 23 and a butt joint groove 24, wherein the rear cover 2 is installed on the rear side of the breaker body 1, the installation rod 3 is fixed on the edge of the top of the rear side of the breaker body 1, the installation rod 3 is positioned in the installation groove 4, the installation groove 4 is arranged on the edge of the top of the rear cover 2, the fixed rod 6 is connected in the installation groove 4 through the spring 5, the protection plate 8 is fixed on the end of the rear cover 2, one end of the protection sheet 10 is positioned in the positioning groove 11, the positioning groove 11 is arranged on the rear cover 2, the outer side of the protection sheet 10 is fixed with a shifting head 12, a guide rod 13 is connected between the inner side of the protection sheet 10 and the end part of the fixed rod 6 in a shaft manner, the edge of the front side of the device body 1 is connected with a first movable rod 14 in a shaft manner, one end of the first movable rod 14 penetrates through the device body 1 and is connected with a gear 15, the gear 15 is connected with the inner part of the device body 1 in a shaft manner, a retraction groove 16 is formed in one side of the device body 1, the retraction groove 16 is positioned above the gear 15, an abutting rod 17 is arranged in the retraction groove 16, a tooth block 18 is fixed at the bottom of the abutting rod 17, a slot 19 is formed in the abutting rod 17, the edge of the front side of the device body 1, which is far away from the first movable rod 14, is connected with a second movable, the side groove 22 is arranged on the inner wall of the butt joint groove 24, the butt joint groove 24 is arranged on one side of the device body 1 far away from the accommodating groove 16, and the screw rod 21 is sleeved with the inserted rod 23 in a threaded manner;
when the device body 1 and the rear cover 2 are in butt joint installation, the installation rod 3 on the device body 1 enters the installation groove 4 and is contacted with the inclined edge end of the fixing rod 6, the fixing rod 6 is compressed, so that the fixing rod 6 slides in the installation groove 4, and the installation rod 3 can be inserted into the installation groove 4;
the end part of the fixed rod 6 is mutually clamped with the fixed groove 7, the fixed groove 7 is arranged on the inner side of the installation rod 3, 4 installation rods 3 are symmetrically arranged on the device body 1, when the installation rod 3 is completely inserted into the installation groove 4, the installation rod 3 loses the limiting effect on the fixed rod 6 at the moment, the fixed rod 6 returns to the original position under the elastic force action of the spring 5, the fixed rod 6 is clamped into the fixed groove 7 on the inner side of the installation rod 3, the installation rod 3 is automatically locked, the butt joint installation between the rear cover 2 and the device body 1 is completed, meanwhile, the 4 installation rods 3 are used, and the connection fixing performance between the rear cover 2 and the device body 1 is improved;
the section of the protection plate 8 and the section of the protection plate 10 form a semicircular structure, and the number of the protection plate 8 is symmetrically arranged about the central axis of the rear cover 2 by 2, so that the end part of the fixing rod 6 can be protected by the protection plate 8 and the protection plate 10, and the error touch is avoided during use;
the protection sheet 10 is connected with the telescopic groove 9 in a sliding way, the end part of the protection sheet 10 is clamped with the positioning groove 11, by sliding the protection sheet 10 into the telescopic slot 9, the protection sheet 10 drives the guide rod 13 to move and rotate, so that the guide rod 13 rotates at the end part of the fixed rod 6 and drives the fixed rod 6 to slide in the mounting groove 4, the fixed rod 6 slides into the mounting groove 4, the end part of the fixed rod 6 is separated from the fixed groove 7, thereby releasing the position of the mounting rod 3, facilitating the disassembly and separation of the device body 1 and the rear cover 2, thereby facilitating the replacement of the parts inside the device body 1, completing the disassembly operation only by sliding the protection sheet 10 without the trouble of disassembling the screw by using a tool, meanwhile, the protection sheet 10 slides outwards in the telescopic groove 9 and is clamped into the positioning groove 11, so that the position of the protection sheet 10 is conveniently fixed, and the function of preventing accidental touch is realized;
the retraction groove 16 and the butt joint groove 24 are vertically distributed on two sides of the device body 1, and the retraction groove 16 and the butt joint groove 24 are distributed at corresponding positions, so that when 2 device bodies 1 are butt-jointed and installed, the butt joint rod 17 in the retraction groove 16 can enter the butt joint groove 24 from the retraction groove 16 to be preliminarily butt-jointed and installed;
the butt joint rod 17 is connected with the retraction slot 16 in a sliding mode, and the outer side of the butt joint rod 17 is attached to the inner walls of the retraction slot 16 and the butt joint slot 24, so that the butt joint rod 17 can stably slide in the retraction slot 16 and the butt joint slot 24, the situation that the deviation is caused and the stable combined installation of 2 device bodies 1 is influenced is avoided;
the gear blocks 18 are distributed at the bottom of the butt joint rod 17 at equal intervals, the gear blocks 18 are meshed with the gear 15, when the first movable rod 14 on the device body 1 is rotated manually, the first movable rod 14 can drive the gear 15 to rotate, and the butt joint rod 17 is driven to slide in the retraction groove 16 through meshing contact of the gear 15 and the gear blocks 18;
the insertion rod 23 is designed to be rectangular, the cross-sectional area of the insertion rod 23 is equal to the cross-sectional area of the slot 19, the insertion rod 23 is perpendicular to the butt joint rod 17, when the butt joint rod 17 slides into the butt joint slot 24 from the retraction slot 16, the second movable rod 20 on the device body 1 is manually rotated, the second movable rod 20 drives the screw rod 21 to rotate, the insertion rod 23 in threaded connection with the screw rod 21 can be driven by the screw rod 21 to slide in the side slot 22, one end of the insertion rod 23 is clamped into the slot 19 on the butt joint rod 17, the butt joint rod 17 in the butt joint slot 24 is locked, and the combined butt joint and fixing of 2 device bodies 1 are completed.
The working principle is as follows: when the circuit breaker which is convenient for carrying and installing spare parts and prevents overload damage is used, as shown in figures 1-4, a device body 1 and a rear cover 2 are jointed, an installation rod 3 on the device body 1 enters into a mounting groove 4 and contacts with the inclined edge end of a fixed rod 6, the fixed rod 6 is compressed, the fixed rod 6 slides in the mounting groove 4, the installation rod 3 can be inserted into the mounting groove 4, when the installation rod 3 is completely inserted into the mounting groove 4, the installation rod 3 loses the limiting function on the fixed rod 6, the fixed rod 6 returns to the original position under the elastic force of a spring 5, the fixed rod 6 is clamped into a fixed groove 7 on the inner side of the installation rod 3, the automatic locking operation is carried out on the installation rod 3, the butt joint installation between the rear cover 2 and the device body 1 is completed, when the rear cover 2 needs to be disassembled, a protection plate 10 is pulled through a poking head 12, the protection plate 10 slides to an expansion groove 9 on one side, the protection sheet 10 drives the guide rod 13 to move and rotate, so that the guide rod 13 rotates at the end part of the fixing rod 6 and drives the fixing rod 6 to slide in the mounting groove 4, the fixing rod 6 slides into the mounting groove 4, the end part of the fixing rod 6 is separated from the fixing groove 7, the position of the mounting rod 3 is released, the device body 1 is directly taken out of the rear cover 2, and the protection sheet 8 and the protection sheet 10 can protect the end part of the fixing rod 6 and avoid mistaken touch during use;
then, as shown in fig. 1 and 5-7, when a plurality of the device bodies 1 are assembled and installed, the side edges of the device bodies 1 are jointed, when the first movable rod 14 on the device body 1 is rotated manually, the first movable rod 14 can drive the gear 15 to rotate, the gear 15 is engaged with the gear block 18 to drive the butt joint rod 17 to slide in the retraction slot 16, when the butt joint rod 17 slides into the butt joint groove 24 from the retraction groove 16, the second movable rod 20 on the device body 1 is manually rotated, the second movable rod 20 drives the screw rod 21 to rotate, the inserted rod 23 which is connected with the screw thread thereof can be driven by the screw 21 to slide in the side groove 22, and one end of the inserted rod 23 is clamped in the slot 19 on the butt-joint rod 17, the locking operation is carried out on the butt joint rod 17 in the butt joint groove 24 to complete the combined butt joint and fixation among 2 device bodies 1, and on the contrary, the disassembly of the device bodies 1 can be reversely completed according to the operation.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (9)
1. The utility model provides a circuit breaker convenient to spare part of portable installation is prevented overload damage, includes the ware body (1), back lid (2), gear (15) and screw rod (21), its characterized in that: the rear cover (2) is installed at the rear side of the device body (1), an installation rod (3) is fixed at the top edge of the rear side of the device body (1), the installation rod (3) is located in an installation groove (4), the installation groove (4) is arranged at the top edge of the rear cover (2), a fixing rod (6) is connected in the installation groove (4) through a spring (5), a protection plate (8) is fixed at the end of the rear cover (2), a telescopic groove (9) is formed in the outer side of the protection plate (8), a protection plate (10) is placed in the telescopic groove (9), one end of the protection plate (10) is located in a positioning groove (11), the positioning groove (11) is arranged on the rear cover (2), a shifting block (12) is fixed at the outer side of the protection plate (10), and a guide rod (13) is connected between the inner side of the protection plate (10) and the end of the fixing rod (6, the edge of the front side of the device body (1) is connected with a first movable rod (14) through a shaft, one end of the first movable rod (14) penetrates through the device body (1) and is connected with a gear (15), the gear (15) is connected with the inside of the device body (1) through the shaft, a retraction groove (16) is formed in one side of the device body (1), the retraction groove (16) is located above the gear (15), a butt joint rod (17) is placed in the retraction groove (16), a tooth block (18) is fixed at the bottom of the butt joint rod (17), a slot (19) is formed in the butt joint rod (17), the edge of the front side of the device body (1) is far away from the first movable rod (14) and is connected with a second movable rod (20) through the shaft, one end of the second movable rod (20) penetrates through the device body (1) and is connected with a screw rod (21), the screw rod (21) is connected in the shaft with a side groove (22), and the side groove (, the butt joint groove (24) is arranged on one side of the device body (1) far away from the retraction groove (16), and the screw rod (21) is sleeved with the inserted rod (23) in a threaded manner.
2. The circuit breaker of claim 1, wherein the circuit breaker further comprises: the fixing rod (6) forms an elastic sliding structure between the spring (5) and the mounting groove (4), the fixing rod (6) is designed to be of a hook-shaped structure, and the end part, close to the mounting rod (3), of the fixing rod (6) is designed to be of an inclined structure.
3. The circuit breaker of claim 1, wherein the circuit breaker further comprises: the end part of the fixing rod (6) is clamped with the fixing groove (7), the fixing groove (7) is arranged on the inner side of the mounting rod (3), and the mounting rod (3) is symmetrically provided with 4 fixing grooves relative to the device body (1).
4. The circuit breaker of claim 1, wherein the circuit breaker further comprises: the cross section of protection shield (8) and protection sheet (10) constitutes a semicircle annular structure, and protection shield (8) are provided with 2 about the central axis symmetry of back lid (2).
5. The circuit breaker of claim 1, wherein the circuit breaker further comprises: the protection plate (10) is in sliding connection with the telescopic groove (9), and the end part of the protection plate (10) is clamped with the positioning groove (11).
6. The circuit breaker of claim 1, wherein the circuit breaker further comprises: the retraction groove (16) and the butt joint groove (24) are vertically distributed on two sides of the device body (1), and the retraction groove (16) and the butt joint groove (24) are distributed at corresponding positions.
7. The circuit breaker of claim 1, wherein the circuit breaker further comprises: the butt joint rod (17) is connected with the retraction groove (16) in a sliding mode, and the outer side of the butt joint rod (17) is attached to the inner walls of the retraction groove (16) and the butt joint groove (24).
8. The circuit breaker of claim 1, wherein the circuit breaker further comprises: the tooth blocks (18) are distributed at the bottom of the butt joint rod (17) at equal intervals, and the tooth blocks (18) are meshed with the gear (15) mutually.
9. The circuit breaker of claim 1, wherein the circuit breaker further comprises: the inserted bar (23) is designed to be of a rectangular structure, the cross section area of the inserted bar (23) is equal to that of the slot (19), and the inserted bar (23) and the butt joint bar (17) are perpendicular to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010829162.1A CN111863550B (en) | 2020-08-18 | 2020-08-18 | Circuit breaker convenient to carry spare part of installation in case of overload damage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010829162.1A CN111863550B (en) | 2020-08-18 | 2020-08-18 | Circuit breaker convenient to carry spare part of installation in case of overload damage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111863550A true CN111863550A (en) | 2020-10-30 |
| CN111863550B CN111863550B (en) | 2022-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010829162.1A Active CN111863550B (en) | 2020-08-18 | 2020-08-18 | Circuit breaker convenient to carry spare part of installation in case of overload damage |
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| CN (1) | CN111863550B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114613646A (en) * | 2022-03-10 | 2022-06-10 | 重庆白泽环境工程有限公司 | Moulded case circuit breaker with quick mounting structure |
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| CN114613646A (en) * | 2022-03-10 | 2022-06-10 | 重庆白泽环境工程有限公司 | Moulded case circuit breaker with quick mounting structure |
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