CN112863953A - Asynchronous double-break contact mechanism and residual current operated circuit breaker - Google Patents
Asynchronous double-break contact mechanism and residual current operated circuit breaker Download PDFInfo
- Publication number
- CN112863953A CN112863953A CN202110006040.7A CN202110006040A CN112863953A CN 112863953 A CN112863953 A CN 112863953A CN 202110006040 A CN202110006040 A CN 202110006040A CN 112863953 A CN112863953 A CN 112863953A
- Authority
- CN
- China
- Prior art keywords
- pole
- contact
- moving contact
- cavity
- asynchronous double
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000003068 static effect Effects 0.000 claims description 25
- 238000010891 electric arc Methods 0.000 claims description 8
- 230000035945 sensitivity Effects 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 9
- 229910052709 silver Inorganic materials 0.000 description 9
- 239000004332 silver Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 3
- YDGFMDPEJCJZEV-UHFFFAOYSA-N 1,2,4-trichloro-3-(3,5-dichlorophenyl)benzene Chemical compound ClC1=CC(Cl)=CC(C=2C(=C(Cl)C=CC=2Cl)Cl)=C1 YDGFMDPEJCJZEV-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- 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
- H01H71/10—Operating or release mechanisms
-
- 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
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
-
- 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
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
- H01H71/0235—Contacts and the arc extinguishing space inside individual separate cases, which are positioned inside the housing of the circuit breaker
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
Landscapes
- Breakers (AREA)
- Keying Circuit Devices (AREA)
Abstract
The invention discloses an asynchronous double-break contact mechanism and a residual current operated circuit breaker. The residual current operated circuit breaker comprises a shell, an asynchronous double-break contact mechanism, a base, an arc extinguishing device, an instantaneous electromagnetic tripping device, a leakage tripping device, a PCB (printed circuit board) and a high-sensitivity mutual inductor, wherein N is zero current breaking through the L, N bipolar asynchronous double-break contact mechanism, so that the arc extinguishing device and the instantaneous electromagnetic tripping device can be omitted in the N, and most space is saved for the structural layout. The invention has compact structure, small volume and reliable work, and can be fully applied to the environment with higher requirement on installation volume.
Description
Technical Field
The invention relates to the field of low-voltage circuit breakers, in particular to an asynchronous double-break contact mechanism and a residual current operated circuit breaker.
Background
In real life, an electric element (commonly called a leakage switch) such as a residual current operated circuit breaker is basically used in every place where electricity exists. The residual current detection circuit is mainly used for detecting residual current, comparing the residual current value with a reference value, and when the residual current value exceeds the reference value, the mechanical switch electric appliance enables a main circuit contact to be disconnected. When a person gets an electric shock or the leakage current of a power grid exceeds a specified value, the residual current operated circuit breaker can rapidly cut off a fault power supply in a very short time, so that the safety of the person and electric equipment is protected, the overload or short circuit of a circuit and a motor can be protected, the residual current operated circuit breaker can be used for the infrequent switching of the circuit and the infrequent starting of the motor, and the residual current operated circuit breaker is an electric appliance which is widely applied in production and life. In the prior art, a single-pole residual current operated circuit breaker is large in size (generally 54 moduli), an N pole cannot be isolated, and a double-pole residual current operated circuit breaker can be isolated on every pole, but is larger in size (generally 72 moduli), and cannot meet the requirement of an installation environment with limited installation space.
Disclosure of Invention
In order to solve the problems, the invention provides an asynchronous double-break contact mechanism and a residual current operated circuit breaker.
An asynchronous double-break contact mechanism comprises an L pole structure and an N pole structure;
the L pole structure comprises an L pole handle, an L pole U-shaped shaft, an L pole lever, an L pole moving contact and an L pole static contact, the L pole handle is connected with the L pole U-shaped shaft, the L pole lever and the L pole moving contact through shafts, and the L pole handle drives the L pole moving contact to swing through the L pole lever to be in contact with or separated from the L pole static contact which is fixedly installed;
the N-pole structure comprises an N-pole handle, an N-pole U-shaped shaft, an N-pole linkage part, an N-pole moving contact and an N-pole static contact, wherein the N-pole handle is connected with the N-pole U-shaped shaft, the N-pole linkage part and the N-pole moving contact through shafts, and the N-pole handle drives the N-pole moving contact to swing through the N-pole linkage part to be in contact with or separated from the fixedly installed N-pole static contact;
the L-pole handle is connected with the N-pole handle, and the N-pole moving contact is connected with the L-pole moving contact first during switching on; when the switch is opened, the N pole moving contact is disconnected after being compared with the L pole moving contact.
The N-pole fixed contact and the L-pole fixed contact are arranged in the same position.
The distance between the N-pole moving contact and the N-stage fixed contact is smaller than the distance between the L-pole moving contact and the L-stage fixed contact.
As a further improvement of the invention, the distance between the connecting shaft of the N-pole linkage piece close to the N-pole U-shaped shaft and the connecting shaft of the N-pole linkage piece close to the N-pole moving contact is smaller than the distance between the connecting shaft of the L-pole lever close to the L-pole U-shaped shaft and the connecting shaft of the L-pole lever close to the L-pole moving contact; the distance between the connecting shaft of the N-pole linkage piece close to the N-pole moving contact and the contact of the N-pole moving contact is greater than the distance between the connecting shaft of the L-pole lever close to the L-pole moving contact and the contact of the L-pole moving contact.
The contact end of the L-pole moving contact is bent.
The utility model provides a residual current operated circuit breaker including asynchronous double break contact mechanism, includes casing, above-mentioned asynchronous double break contact mechanism, be equipped with two cavities that are parallel to each other in the casing, first cavity is equipped with the L utmost point structure of asynchronous double break contact mechanism, and the second cavity is equipped with the N utmost point structure of asynchronous double break contact mechanism.
The high-sensitivity mutual inductor is arranged at the lower part of the first cavity, which is different from the moving contact of the L-pole structure, and the high-sensitivity mutual inductor and the moving contact of the L-pole structure are respectively positioned at two sides of the arc extinguishing device;
the second cavity still is equipped with termination, electric leakage trip gear, PCB circuit board, termination includes two connection frames, locates respectively the both ends of casing, the N utmost point stationary contact of N utmost point structure is fixed to be set up in the second cavity and links to each other with the top connection frame, the upper portion, middle part, the lower part of second cavity one side are located respectively to N utmost point structure, electric leakage trip gear, PCB circuit board, the lower part of second cavity and the different sides of N utmost point structure movable contact is located to the high sensitivity mutual-inductor, and high sensitivity mutual-inductor and N utmost point structure movable contact are located the both sides of PCB circuit board respectively.
An arc isolating plate for preventing electric arc from overflowing is arranged between the L-pole static contact and the inner wall of the first cavity.
And a magnetic conduction plate for guiding the moving track of the electric arc is arranged between the arc extinguishing device and the L-pole moving contact.
And a plurality of parallel bosses for cutting short-circuit electric arc are arranged between the arc extinguishing device and the L-pole movable contact.
The invention has the beneficial effects that: the invention ensures that the N pole is disconnected with zero current through the L, N bipolar asynchronous double-break contact mechanism, so that an arc extinguishing device and an instantaneous electromagnetic tripping device can be omitted from the N pole, and most space is saved for the structural layout. The invention has compact structure, small volume and reliable work, and can be fully applied to the environment with higher requirement on installation volume.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of an asynchronous double-break contact mechanism.
Fig. 2 is a schematic structural diagram of another embodiment of an asynchronous double-break contact mechanism.
Fig. 3 is a schematic structural diagram of a first cavity of an embodiment of a residual current operated circuit breaker.
Fig. 4 is a schematic structural diagram of a second cavity of an embodiment of a residual current operated circuit breaker.
Detailed Description
The embodiments of the present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, an asynchronous double-break contact mechanism includes an L-pole structure and an N-pole structure;
the L pole structure comprises an L pole handle 1, an L pole U-shaped shaft 2, an L pole lever 3, an L pole moving contact 4, an L pole static contact 5 and an L pole static silver point 6, wherein the L pole handle 1 is connected with the L pole U-shaped shaft 2, the L pole lever 3 and the L pole moving contact 4 through shafts, the L pole static silver point 6 is arranged on the surface of the L pole static contact 5, and the L pole handle 1 drives the L pole moving contact 4 to swing through the L pole lever 3 to be in contact with or separate from the L pole static silver point 6 on the L pole static contact 5 which is fixedly installed;
the N-pole structure comprises an N-pole handle 7, an N-pole U-shaped shaft 8, an N-pole linkage part 9, an N-pole moving contact 10, an N-pole static contact 11, an N-pole moving silver point 13 and an N-pole static silver point 12, wherein the N-pole handle 7 is connected with the N-pole U-shaped shaft 8, the N-pole linkage part 9 and the N-pole moving contact 10 through shafts, the N-pole moving silver point 13 is arranged on the surface of the N-pole moving contact 10, the N-pole static silver point 12 is arranged on the surface of the N-pole static contact 11, and the N-pole handle 7 drives the N-pole moving contact 10 to swing through the N-pole linkage part 9 to drive the N-pole moving silver point 13 to be in contact with or separated from the N-pole static silver point 12;
the L-pole handle 1 is communicated with the N-pole handle 7, and the double handles ensure the final pressure and ensure the stable working performance.
The contact end of the L-pole moving contact 4 is bent.
The N-pole fixed contact 11 and the L-pole fixed contact 5 are arranged in a same position.
The distance between the N-pole moving contact 10 and the N-stage fixed contact 11 is 1-1.5mm smaller than that between the L-pole moving contact 4 and the L-stage fixed contact 5, when the switch is switched on, the N-pole moving contact 10 is switched on earlier than the L-pole moving contact 11, and when the switch is switched off, the N-pole moving contact 10 is switched off later than the L-pole moving contact 11.
Fig. 2 shows another asynchronous double-break contact mechanism, which includes an L-pole structure and an N-pole structure in the embodiment shown in fig. 1, where the N-pole static contact and the L-pole static contact are arranged in the same position, and a distance between a connecting shaft c2 of the N-pole linkage piece close to the N-pole U-shaped shaft and a connecting shaft d2 of the N-pole linkage piece close to the N-pole moving contact is smaller than a distance between a connecting shaft c1 of the L-pole lever close to the L-pole U-shaped shaft and a connecting shaft d1 of the L-pole lever close to the L-pole moving contact; the distance between the connecting shaft d2 of the N pole linkage piece close to the N pole moving contact and the contact f2 of the N pole moving contact is greater than the distance between the connecting shaft d1 of the L pole lever close to the L pole moving contact and the contact f1 of the L pole moving contact. When the switch is switched on, the N-pole moving contact is switched on earlier than the L-pole moving contact, redundant stroke after the switch is switched on is hidden by a system, and when the switch is switched off, redundant stroke of the N-pole moving contact is released, so that the moving contact in the switch is switched off later than the L-pole moving contact.
When the two structures can realize closing, the N-pole moving contact is firstly switched on than the L-pole moving contact; when the switch is opened, the N pole moving contact is disconnected after being compared with the L pole moving contact. The above object can also be achieved by combining and superposing the two structures.
As shown in fig. 3-4, the residual current operated circuit breaker includes a housing 101 and the asynchronous double-break contact mechanism shown in fig. 1, where the housing 101 is provided with a base 106, a partition plate 102 is provided in the housing 101, the partition plate 102 partitions the housing 101 into two cavities, the two cavities are a first cavity for laying an L-pole circuit breaker module and a second cavity for laying an N-pole circuit breaker module, and a high-sensitivity transformer 105 is provided between the first cavity and the second cavity.
The L pole circuit breaker module comprises a wiring device, an L pole structure 109 in an asynchronous double-break contact mechanism, an arc extinguishing device 107 and an instantaneous electromagnetic tripping device 104, wherein the wiring device comprises two wiring frames 103 and 108 which are respectively arranged at two ends of the shell 101, an L pole stationary contact of the L pole structure is fixedly arranged in a first cavity and is connected with the wiring frame 108 at the top end, the L pole structure 109, the instantaneous electromagnetic tripping device 104 and the arc extinguishing device 107 are respectively arranged at the upper part, the middle part and the lower part of one side of the first cavity, the high-sensitivity mutual inductor 105 is arranged at the lower part of the different side of the first cavity and the movable contact of the L pole structure, and the high-sensitivity mutual inductor 105 and the movable contact of the L pole structure are respectively positioned at two sides of the arc extinguishing device. An arc separation plate 111 for preventing electric arc from overflowing is arranged between the L-pole static contact and the inner wall of the first cavity, a magnetic conduction plate 110 for guiding an electric arc moving track and a plurality of mutually parallel bosses 112 for cutting short-circuit electric arcs are arranged between the arc extinguishing device 107 and the L-pole movable contact, and the magnetic conduction plate and the bosses are matched to cut and guide the generated electric arcs to the arc extinguishing device 107.
The N-pole circuit breaker module comprises a wiring device, an N-pole structure 114 in an asynchronous double-break contact mechanism, an electric leakage tripping device 112 and a PCB (printed circuit board) 113, wherein the wiring device comprises two wiring frames 115 and 116 which are respectively arranged at two ends of the shell 101, an N-pole stationary contact of the N-pole structure 114 is fixedly arranged in the second cavity and is connected with the wiring frame 115 at the top end, the N-pole structure 114, the electric leakage tripping device 112 and the PCB 113 are respectively arranged at the upper part, the middle part and the lower part of one side of the second cavity, the high-sensitivity mutual inductor 105 is arranged at the lower part of the second cavity, which is different from the moving contact of the N-pole structure, and the high-sensitivity mutual inductor 105 and the moving contact of the N-pole structure are.
Because the L, N dipolar asynchronous double-break contact mechanism is adopted to break the N pole into zero current, an arc extinguishing device and an instantaneous electromagnetic tripping device can be omitted from the N pole, and most space is saved for the structural layout. The volume of the product can be greatly reduced on the premise of ensuring stable work.
The examples should not be construed as limiting the present invention, but any modifications made based on the spirit of the present invention should be within the scope of protection of the present invention.
Claims (10)
1. An asynchronous double-break contact mechanism is characterized in that: comprises an L pole structure and an N pole structure;
the L pole structure comprises an L pole handle (1), an L pole U-shaped shaft (2), an L pole lever (3), an L pole moving contact (4) and an L pole static contact (5), wherein the L pole handle (1) is connected with the L pole U-shaped shaft (2), the L pole lever (3) and the L pole moving contact (4) through shafts, and the L pole handle (1) drives the L pole moving contact (4) to swing through the L pole lever (3) to be in contact with or separated from the L pole static contact (5) which is fixedly installed;
the N-pole structure comprises an N-pole handle (7), an N-pole U-shaped shaft (8), an N-pole linkage piece (9), an N-pole moving contact (10) and an N-pole static contact (11), wherein the N-pole handle (7) is connected with the N-pole U-shaped shaft (8), the N-pole linkage piece (9) and the N-pole moving contact (10) through shafts, and the N-pole handle (7) drives the N-pole moving contact (10) to swing through the N-pole linkage piece (9) to be in contact with or separated from the N-pole static contact (11) which is fixedly installed;
the L-pole handle (1) is connected with the N-pole handle (7), and the N-pole moving contact (10) is connected before the L-pole moving contact (4) during switching on; when the switch is opened, the N pole moving contact (10) is disconnected after being compared with the L pole moving contact (4).
2. An asynchronous double break contact mechanism according to claim 1, characterized in that: the N-pole fixed contact (11) and the L-pole fixed contact (5) are arranged in a same position.
3. An asynchronous double break contact mechanism according to claim 2, characterized in that: the distance between the N-pole moving contact (10) and the N-stage fixed contact (11) is smaller than the distance between the L-pole moving contact (4) and the L-stage fixed contact (5).
4. An asynchronous double break contact mechanism according to claim 2, characterized in that: the distance between a connecting shaft (c 2) of the N-pole linkage piece close to the N-pole U-shaped shaft and a connecting shaft (d 2) of the N-pole linkage piece close to the N-pole moving contact is smaller than the distance between a connecting shaft (c 1) of the L-pole lever close to the L-pole U-shaped shaft and a connecting shaft (d 1) of the L-pole lever close to the L-pole moving contact; the distance between the N pole linkage piece close to the connecting shaft (d 2) of the N pole moving contact and the contact (f 2) of the N pole moving contact is greater than the distance between the L pole lever close to the connecting shaft (d 1) of the L pole moving contact and the contact (f 1) of the L pole moving contact.
5. An asynchronous double break contact mechanism according to claim 1, characterized in that: the contact end of the L-pole moving contact (4) is bent.
6. A residual current operated circuit breaker including an asynchronous double break contact mechanism according to any of claims 1 to 5, characterized in that: including casing (101), above-mentioned asynchronous double break contact mechanism, be equipped with two cavities that are parallel to each other in casing (101), first cavity is equipped with L utmost point structure (109) of asynchronous double break contact mechanism, and the second cavity is equipped with N utmost point structure (114) of asynchronous double break contact mechanism.
7. A residual current operated circuit breaker according to claim 6, wherein: a high-sensitivity mutual inductor (105) is arranged between the first cavity and the second cavity, the first cavity is further provided with a wiring device, an arc extinguishing device (107) and an instantaneous electromagnetic tripping device (104), the wiring device comprises two wiring frames (103 and 108) which are respectively arranged at two ends of the shell (101), an L pole static contact of the L pole structure (109) is fixedly arranged in the first cavity and is connected with the wiring frame (108) at the top end, the L pole structure (109), the instantaneous electromagnetic tripping device (104) and the arc extinguishing device (107) are respectively arranged at the upper part, the middle part and the lower part of one side of the first cavity, the high-sensitivity mutual inductor (105) is arranged at the lower part of the first cavity, which is different from the movable contact of the L pole structure, and the high-sensitivity mutual inductor (105) and the movable contact of the L pole structure are respectively arranged at two sides of the arc;
the second cavity still is equipped with termination, electric leakage trip gear (112), PCB circuit board (113), termination includes two connection frame (115, 116), locates respectively the both ends of casing (101), the N utmost point stationary contact of N utmost point structure (114) is fixed to be set up in the second cavity and links to each other with top connection frame (115), upper portion, middle part, the lower part of second cavity one side are located respectively to N utmost point structure (114), electric leakage trip gear (112), PCB circuit board (113), the lower part of second cavity and N utmost point structure movable contact difference side is located in high sensitivity mutual-inductor (105), and high sensitivity mutual-inductor (105) and N utmost point structure movable contact are located the both sides of PCB circuit board (113) respectively.
8. A residual current operated circuit breaker according to claim 7, wherein: an arc isolation plate (111) for preventing electric arc from overflowing is arranged between the L-pole static contact and the inner wall of the first cavity.
9. A residual current operated circuit breaker according to claim 7, wherein: and a magnetic conduction plate (110) for guiding an electric arc moving track is arranged between the arc extinguishing device (107) and the L-pole moving contact.
10. A residual current operated circuit breaker according to claim 9, wherein: a plurality of parallel bosses (112) used for cutting short-circuit electric arc are arranged between the arc-extinguishing device (107) and the L-pole moving contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110006040.7A CN112863953B (en) | 2021-01-05 | 2021-01-05 | Asynchronous double-break contact mechanism and residual current operated circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110006040.7A CN112863953B (en) | 2021-01-05 | 2021-01-05 | Asynchronous double-break contact mechanism and residual current operated circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112863953A true CN112863953A (en) | 2021-05-28 |
| CN112863953B CN112863953B (en) | 2023-07-28 |
Family
ID=76001638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110006040.7A Active CN112863953B (en) | 2021-01-05 | 2021-01-05 | Asynchronous double-break contact mechanism and residual current operated circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112863953B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203931970U (en) * | 2014-06-30 | 2014-11-05 | 温州罗格朗电器有限公司 | The extremely breakable monolithic devices residual current circuit breaker of a kind of N |
| CN107146745A (en) * | 2016-03-01 | 2017-09-08 | 浙江正泰电器股份有限公司 | Electronic type residual current circuit breaker |
| CN107393770A (en) * | 2017-08-24 | 2017-11-24 | 乐清市也为电气有限公司 | A kind of RCCB |
| CN210866092U (en) * | 2019-09-05 | 2020-06-26 | 上海正泰智能科技有限公司 | Circuit breaker |
| CN111627777A (en) * | 2020-06-10 | 2020-09-04 | 厦门宏发开关设备有限公司 | Circuit breaker |
| CN111640628A (en) * | 2020-05-21 | 2020-09-08 | 温州金旭电气有限公司 | Miniature residual current circuit breaker |
| WO2020211585A1 (en) * | 2019-04-16 | 2020-10-22 | 天津加美特电气设备有限公司 | Circuit breaker having n poles without arc extinguishing device |
| CN111899992A (en) * | 2020-07-14 | 2020-11-06 | 威胜电气有限公司 | 1P + N circuit breaker and electric equipment provided with same |
| CN112071719A (en) * | 2020-09-28 | 2020-12-11 | 德力西电气有限公司 | Circuit breaker opening and closing contact mechanism and circuit breaker |
| CN212161736U (en) * | 2020-06-10 | 2020-12-15 | 厦门宏发开关设备有限公司 | Residual current circuit breaker |
-
2021
- 2021-01-05 CN CN202110006040.7A patent/CN112863953B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203931970U (en) * | 2014-06-30 | 2014-11-05 | 温州罗格朗电器有限公司 | The extremely breakable monolithic devices residual current circuit breaker of a kind of N |
| CN107146745A (en) * | 2016-03-01 | 2017-09-08 | 浙江正泰电器股份有限公司 | Electronic type residual current circuit breaker |
| CN107393770A (en) * | 2017-08-24 | 2017-11-24 | 乐清市也为电气有限公司 | A kind of RCCB |
| WO2020211585A1 (en) * | 2019-04-16 | 2020-10-22 | 天津加美特电气设备有限公司 | Circuit breaker having n poles without arc extinguishing device |
| CN210866092U (en) * | 2019-09-05 | 2020-06-26 | 上海正泰智能科技有限公司 | Circuit breaker |
| CN111640628A (en) * | 2020-05-21 | 2020-09-08 | 温州金旭电气有限公司 | Miniature residual current circuit breaker |
| CN111627777A (en) * | 2020-06-10 | 2020-09-04 | 厦门宏发开关设备有限公司 | Circuit breaker |
| CN212161736U (en) * | 2020-06-10 | 2020-12-15 | 厦门宏发开关设备有限公司 | Residual current circuit breaker |
| CN111899992A (en) * | 2020-07-14 | 2020-11-06 | 威胜电气有限公司 | 1P + N circuit breaker and electric equipment provided with same |
| CN112071719A (en) * | 2020-09-28 | 2020-12-11 | 德力西电气有限公司 | Circuit breaker opening and closing contact mechanism and circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112863953B (en) | 2023-07-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN200993948Y (en) | Safety earth fault circuit breaker | |
| CN102354638B (en) | Dual-power automatic transfer switch and overload and short-circuit protection method thereof | |
| CN101989518B (en) | Phase-line and neutral-line type residual current action breaker | |
| CN107146745B (en) | Electronic leakage circuit breaker | |
| CN102709131A (en) | Double-mechanism super-small 1P plus N electric leakage circuit breaker | |
| CN216980475U (en) | Intelligent low-voltage circuit breaker | |
| CN111640628B (en) | Miniature residual current circuit breaker | |
| CN101114557A (en) | Safety circuit breaker | |
| CN109659190B (en) | Built-in isolated vacuum arc-extinguishing chamber device and vacuum circuit breaker | |
| CN101170034A (en) | Small breaker | |
| CA2364989A1 (en) | Circuit breaker with bypass conductor commutating current out of the bimetal during short circuit interruption and method of commutating current out of bimetal | |
| CN109712842B (en) | Built-in isolated vacuum arc-extinguishing chamber combination and vacuum circuit breaker | |
| CN210805670U (en) | Novel circuit breaker equipment | |
| CN108022814A (en) | A kind of miniature circuit breaker arc quenching system | |
| CN202178163U (en) | Automatic transfer switch equipment for dual power supply | |
| CN201584387U (en) | Phase line and neutral line type residual current operated circuit breaker | |
| CN216902750U (en) | Residual current circuit breaker | |
| CN112863953A (en) | Asynchronous double-break contact mechanism and residual current operated circuit breaker | |
| CN213366509U (en) | Reset control mechanism of air circuit breaker | |
| CN212322897U (en) | Load switch for clean and dry air insulated metal-enclosed switchgear | |
| CN109786172B (en) | Built-in isolated vacuum arc-extinguishing chamber component and vacuum circuit breaker | |
| CN212676174U (en) | Novel direct-current high-speed circuit breaker | |
| CN209843644U (en) | Moving contact part structure | |
| CN207165485U (en) | A kind of small size vacuum contactor for ring main unit | |
| CN111540641A (en) | Load switch for clean and dry air insulated metal-enclosed switchgear |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |