CN219180388U - Relay for improving arc extinguishing performance - Google Patents
Relay for improving arc extinguishing performance Download PDFInfo
- Publication number
- CN219180388U CN219180388U CN202320016081.9U CN202320016081U CN219180388U CN 219180388 U CN219180388 U CN 219180388U CN 202320016081 U CN202320016081 U CN 202320016081U CN 219180388 U CN219180388 U CN 219180388U
- Authority
- CN
- China
- Prior art keywords
- contact
- movable
- arc
- arc extinguishing
- side plate
- 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.)
- Active
Links
Images
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model discloses a relay for improving arc extinguishing performance, which comprises a base, a contact system and an arc extinguishing chamber, wherein the arc extinguishing chamber comprises two first side plates and two second side plates; the contact system comprises a movable spring part and a static spring part, wherein the movable spring part comprises a movable reed and a movable contact, and the static spring part comprises a static reed and a static contact; the working face of the movable contact for contact fit of the fixed contact is provided with a first end close to the second side plate and a second end far away from the second side plate; when the movable contact is disconnected from the stationary contact, the second end of the working surface is firstly separated from the stationary contact, and the first end of the working surface is separated from the stationary contact at the latest. The utility model enables the arcing point when the movable contact and the fixed contact are disconnected to be close to the second side plate of the arc extinguishing chamber, thereby leading the arc extinguishing effect of the arc extinguishing chamber to be better.
Description
Technical Field
The utility model relates to the technical field of relays, in particular to a relay for improving arc extinguishing performance.
Background
An electromagnetic relay is an electronic control device which is commonly used in automatic control circuits and is actually an "automatic switch" which uses a smaller current to control a larger current, thus playing roles in automatic regulation, safety protection, switching circuits, etc. in the circuit. The movable contact and the stationary contact of the relay are easy to generate electric arcs when being broken, in order to cool down and extinguish the electric arcs rapidly, the arc extinguishing cover for enclosing the contact assembly is arranged on a plurality of relays, the arc extinguishing cover is of a semi-enclosing frame structure and comprises two first side plates and a second side plate positioned between the two first side plates, the electric arcs generated by breaking the movable contact and the stationary contact are beaten to the arc extinguishing cover, and the electric arcs are cooled and extinguished through the arc extinguishing cover. Because the arcing point during breaking of the movable contact and the stationary contact is usually located at the middle position of the contact surface of the movable contact and the stationary contact, the arcing point is far away from the second side plate of the arc-extinguishing chamber, the arc is easy to contact with the second side plate, the second side plate is a main arc-extinguishing part of the arc-extinguishing chamber, so that the arc-extinguishing effect of the arc-extinguishing chamber is poor, and once the arc is not effectively extinguished, the magnetic circuit part above the contacts, particularly the coil of the magnetic circuit part, is easy to burn. Particularly in the case of a relatively compact relay structure, arcs that are not effectively extinguished are more prone to ablating into the magnetic circuit portion and its coils.
Disclosure of Invention
Aiming at the technical problems existing in the prior art, the utility model provides a relay for improving the arc extinguishing performance, which enables an arcing point during breaking of a movable contact and a static contact to be close to a main arc extinguishing part of an arc extinguishing chamber, so that the arc extinguishing chamber can efficiently extinguish the arc.
The technical scheme adopted for solving the technical problems is as follows: the relay comprises a base, a magnetic circuit system, a contact system and an arc-extinguishing cover, wherein the arc-extinguishing cover comprises two first side plates which are oppositely arranged and a second side plate which is arranged between one side ends of the two first side plates; the contact system comprises a movable spring part and a static spring part which are matched with each other, wherein the movable spring part comprises a movable reed and a movable contact arranged on the movable reed, and the static spring part comprises a static reed and a static contact arranged on the static reed; the arc-extinguishing chamber encloses the movable contact and the fixed contact, the arrangement direction of the movable contact and the fixed contact is consistent with the arrangement direction of the two first side plates, and a working surface of the movable contact for contact fit with the fixed contact is provided with a first end close to the second side plate and a second end far away from the second side plate; when the movable contact is disconnected from the stationary contact, the second end of the working surface is firstly separated from the stationary contact, and the first end of the working surface is separated from the stationary contact at the latest.
Further, the working face is inclined in a direction such that the first end thereof is closer to the stationary contact than the second end thereof, and the inclination angle thereof is greater than or equal to 5 °.
Further, the second side plate comprises a lower side plate and an upper side plate arranged at the upper end of the lower side plate, and the upper side plate is an inclined plate inclined towards the inner side of the arc extinguishing chamber.
Further, the device also comprises an arc blowing magnetic steel which is arranged on the base and positioned outside the second side plate, and one of an N pole and an S pole of the arc blowing magnetic steel faces the second side plate.
Further, an opening is formed between the other side ends of the two first side plates, a slot of the arc-extinguishing chamber is arranged on the base, the bottom of the arc-extinguishing chamber is inserted into the slot, and the opening is deformed in a shrinking manner, so that the bottom of the arc-extinguishing chamber is clamped in the slot.
Further, the arc extinguishing chamber further comprises two plugboards, wherein the two plugboards are respectively arranged at the bottom ends of the two first side plates one by one and extend downwards, and the two plugboards are respectively inserted into the slots.
Further, before the bottom of the arc extinguishing chamber is inserted into the slot, the distance between the two first side plates is gradually increased from one side end to the other side end.
Further, a retaining wall is arranged on one side, close to the second side plate, of the base in the slot, and the retaining wall is arranged in the middle.
Further, the movable spring part comprises two movable contacts, the two movable contacts are respectively positioned at two opposite sides of the movable spring, the stationary spring part comprises two stationary springs, each stationary spring is respectively provided with one stationary contact, and the stationary contacts of the two stationary springs are oppositely arranged and are respectively matched with the two movable contacts on the movable spring one by one.
Further, the number of the movable spring part, the fixed spring part and the arc extinguishing cover is multiple, and the multiple fixed spring parts are arranged in two parallel rows; the static spring pieces of the static spring parts are respectively arranged on the base, the movable spring pieces of the movable spring parts are respectively vertical, the movable contact is arranged at the lower ends of the movable spring pieces, the upper ends of the movable contact are respectively and fixedly connected with the same plastic piece in an insert injection molding manner, and the plastic piece is fixedly connected with the armature of the magnetic circuit system.
Compared with the prior art, the utility model has the following beneficial effects:
1. when the movable contact and the fixed contact are disconnected, the second end of the working surface of the movable contact leaves the fixed contact at first, and the first end of the working surface leaves the fixed contact at the latest, so that an arcing point when the movable contact and the fixed contact are disconnected is closest to the second side plate of the arc extinguishing chamber, an arc generated when the movable contact and the fixed contact are disconnected can be effectively extinguished by the second side plate, the arc extinguishing effect of the arc extinguishing chamber is greatly provided, and the arc is prevented from being ablated to a magnetic circuit part and a coil thereof above the contact.
2. The working face is inclined in a direction that the first end of the working face is closer to the fixed contact than the second end of the working face, and the inclination angle of the working face is larger than or equal to 5 degrees, so that the movable contact can achieve the purpose of changing the starting point through a simple structural design, and meanwhile, the contact effect of the movable contact and the fixed contact is not influenced.
3. The second side plate comprises a lower side plate and an upper side plate arranged at the upper end of the lower side plate, and the upper side plate is an inclined plate inclined towards the inner side of the arc extinguishing chamber, so that the arc extinguishing effect of the second side plate is better. In particular, when the arc-blowing magnetic steel is designed, the arc-blowing magnetic steel can elongate an electric arc upwards and is effectively blocked and extinguished by the upper side plate.
4. According to the utility model, the slot is arranged on the base, the bottom of the arc-extinguishing cover is inserted into the slot, and the opening is deformed in a shrinking way, so that the arc-extinguishing cover is clamped in the slot by means of tension, the installation of the arc-extinguishing cover is more convenient and rapid, the long-term fixing effect of the arc-extinguishing cover can be ensured, and the arc-extinguishing cover is not influenced by high temperature (the arc-extinguishing cover is adhered and fixed by epoxy resin in the prior art, the epoxy resin is solidified for a certain time, so that the installation of the arc-extinguishing cover is not rapid, and the solidified epoxy resin is easily aged due to the long-term influence of high temperature of an electric arc, so that the arc-extinguishing cover is poorly fixed and even falls off).
5. The base is provided with the retaining wall in the slot, so that the creepage distance between the movable contact and the fixed contact of the contact assembly can be increased, and particularly, when splashes at the end of service life are accumulated below the lower side plate of the arc-extinguishing cover, the base still has good insulating property, thereby improving the insulating strength of the whole service life period.
The utility model is described in further detail below with reference to the drawings and examples; the relay of the present utility model for improving arc extinguishing performance is not limited to the embodiment.
Drawings
Fig. 1 is a schematic perspective view of an arc chute of the present utility model;
fig. 2 is a schematic diagram showing a perspective view of an arc chute according to the present utility model;
fig. 3 is a top view of the arc chute of the present utility model;
FIG. 4 is a schematic perspective view of the base of the present utility model;
figure 5 is a schematic view of the cooperation of the base of the present utility model with a portion of the arc chute, contact system
FIG. 6 is a top view of FIG. 5;
FIG. 7 is an enlarged schematic view of portion A of FIG. 6;
fig. 8 is a schematic view of the cooperation of the base of the present utility model with an arc chute, contact system, etc.;
FIG. 9 is a schematic perspective view of the present utility model (without the housing);
the arc extinguishing device comprises a base, an arc extinguishing chamber, 11, a first side plate, 12, a second side plate, 121, a lower side plate, 122, an upper side plate, 13, an inserting plate, 2, a base, 21, an inserting groove, 22, a retaining wall, 23, an inserting hole, 24, an installation position, 3, a movable contact, 31, a working face, 4, a fixed contact, 5, a fixed reed, 6, an electric arc, 7, a movable reed, 8, magnetic steel, 9, a plastic piece, 10, a magnetic circuit system, 101 and an armature.
Detailed Description
In the present disclosure, the terms "first," "second," and the like are used merely to distinguish between similar objects and not necessarily to describe a particular sequence or order, nor are they to be construed as indicating or implying a relative importance. In the description, the orientation or positional relationship indicated by "upper", "lower", etc. are used based on the orientation or positional relationship shown in the drawings, only for convenience of describing the present utility model, and are not intended to indicate or imply that the apparatus referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the scope of protection of the present utility model. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be. In addition, in the description of the present application, unless otherwise indicated, "a plurality" means two or more.
Referring to fig. 1-9, the relay for improving arc extinguishing performance of the present utility model includes a base 2, a magnetic circuit system 10, a contact system and an arc extinguishing chamber 1, wherein the arc extinguishing chamber 1 has a semi-enclosure structure, and includes two first side plates 11 oppositely arranged and a second side plate 12 arranged between one side ends of the two first side plates 11, and an opening is formed between the other side ends of the two first side plates 11. The two first side plates 11 and the second side plate 12 are integrally formed, but not limited thereto. The contact system comprises a movable spring part and a static spring part which are matched with each other, wherein the movable spring part comprises a movable spring piece 7 and a movable contact 3 arranged on the movable spring piece 7, and the static spring part comprises a static spring piece 5 and a static contact 4 arranged on the static spring piece 5; the arc extinguishing chamber 1 encloses the movable contact 3 and the stationary contact 4, the arrangement direction of the movable contact 3 and the stationary contact 4 is consistent with the arrangement direction of the two first side plates 11, and a working surface 31 of the movable contact 3 for contact fit with the stationary contact 4 is provided with a first end close to the second side plate 12 and a second end far away from the second side plate 12; when the movable contact 3 is disconnected from the stationary contact 4, the second end of the working surface 31 is first separated from the stationary contact 4, and the first end of the working surface 31 is separated from the stationary contact 4 at the latest. In this way, the arcing point when the movable contact 3 and the stationary contact 4 are disconnected is brought close to the second side plate 12.
In this embodiment, the working surface 31 is a straight surface, and the working surface 31 is inclined in a direction such that the first end thereof is closer to the stationary contact than the second end thereof, and the inclination angle α thereof is greater than or equal to 5 °. Therefore, in the open state of the movable contact 3 and the stationary contact 4, the distance between the first end of the working surface 31 and the stationary contact 4 is the smallest, and the distance between the second end of the working surface 31 and the stationary contact 4 is the largest.
In this embodiment, the second side plate 12 includes a lower side plate 121 and an upper side plate 122 disposed at an upper end of the lower side plate 121, the upper side plate 122 is a sloping plate sloping toward the inner side of the arc extinguishing chamber 1, and the lower side plate 121 is a vertical plate. The upper side plate 122 is integrally formed with the lower side plate 121, but is not limited thereto.
In this embodiment, the present utility model further includes an arc-blowing magnetic steel 8, where the arc-blowing magnetic steel 8 is disposed on the base 2 and is located outside the second side plate 12, and one of the N pole and the S pole of the arc-blowing magnetic steel 8 faces the second side plate 12.
In this embodiment, the base 2 is provided with a slot 21 at a position corresponding to the contact assembly, the bottom of the arc-extinguishing chamber 1 is inserted into the slot 21, and the opening is deformed in a shrinking manner, so that the bottom of the arc-extinguishing chamber 1 is clamped in the slot 21. Specifically, the distance L between the first side plates 11 increases from one end to the other end of the arc extinguishing chamber 1 before the bottom of the arc extinguishing chamber is inserted into the slot 21. Specifically, before the bottom of the arc-extinguishing chamber 1 is inserted into the slot 21, the included angles β between the two first side plates 11 and the lower side plate 121 of the second side plate 12 are respectively greater than 90 °, specifically, the included angles β between the two first side plates 11 and the second side plate 12 are about 92 °, as shown in fig. 3, but not limited thereto. After the bottom of the arc extinguishing chamber 1 is inserted into the slot 21, an included angle β between the two first side plates 11 and the lower side plate 121 of the second side plate 12 becomes 90 °.
In this embodiment, the arc-extinguishing chamber 1 further includes two insertion plates 13, the two insertion plates 13 are respectively disposed at the bottom ends of the two first side plates one by one and extend downward, and the two insertion plates 13 form the bottom of the arc-extinguishing chamber 1 and are respectively inserted into the slots 21. The dimensions of the two insert plates 13 are respectively smaller than those of the two first side plates 11.
In this embodiment, as shown in fig. 4, a retaining wall 22 is disposed on a side of the base 2, which is close to the second side plate 12, in the slot 21, and the retaining wall 22 is centrally disposed. The retaining wall 22 can improve the creepage distance between the movable contact 3 and the stationary contact 4 of the contact assembly, thereby improving the insulation strength, especially when the splashes at the end of life are piled up below the lower side plate 121 of the arc extinguishing chamber 1, the insulating performance is still better, and the insulation strength of the whole life cycle is improved. The height of the retaining wall 22 is not too high, specifically, the height of the retaining wall 22 is equal to or slightly smaller than the depth of the insertion 21, so that interference with the movable reed 7 is avoided, and accidental blanking and jamming when the distance between the retaining wall and the movable reed 7 is too short are avoided. In this embodiment, the movable spring part includes two movable contacts 3, the two movable contacts 3 are respectively located at two opposite sides of the movable spring 7, the stationary spring part includes two stationary springs 5, each stationary spring 5 is respectively provided with one stationary contact 4, and the stationary contacts 4 of the two stationary springs 5 are oppositely arranged and respectively matched with the two movable contacts 3 on the movable spring 7 one by one. In the two static spring plates 5, one of the static spring plates is a normally closed static spring, and the other static spring plate is a normally open static spring, so that the utility model forms a conversion relay.
In this embodiment, the number of the moving spring part, the static spring part and the arc extinguishing chamber 1 is plural, and the plural static spring parts are arranged in two parallel rows; the static spring 5 of each static spring part is respectively inserted into the base 1, the movable spring 7 of each movable spring part is respectively vertical, the lower ends of the static spring parts are respectively provided with the movable contacts 3, the upper ends of the static spring parts are respectively in insert molding or fixedly connected with the same plastic part 9, the plastic part 9 is fixedly connected with the armature 101 of the magnetic circuit system 10, and the magnetic circuit system 10 is horizontal and is positioned above the contacts, as shown in fig. 9. Therefore, the utility model is particularly a clapping type plug-in relay. The arc extinguishing chamber 1 corresponds to the contact assemblies formed by the movable spring part and the static spring part one by one, so that the arc extinguishing chambers 1 are arranged in two rows in parallel, the arc blowing magnetic steel 8 is positioned between the two rows of arc extinguishing chambers, the N pole and the S pole of the arc blowing magnetic steel 8 face the two rows of arc extinguishing chambers respectively, and the arc blowing magnetic steel 8 can blow upwards to each contact assembly by adjusting the positive pole and the negative pole when the upper end of the movable spring 7 and the lower end of the static spring 5 are connected.
According to the relay for improving the arc extinguishing performance, when the arc extinguishing chamber is assembled, only the two first side plates 11 of the arc extinguishing chamber 1 are required to be slightly pressed inwards, so that the included angle between the two first side plates 11 and the second side plate 12 is smaller than or equal to 90 degrees, and then the plugboard 13 at the bottom ends of the two first side plates 11 is inserted into the slot 21. When the two first side plates 11 are released, the two first side plates 11 deform outwards to reset, so that the arc extinguishing chamber 1 is clamped in the slot 21 by means of self tension. Therefore, the utility model not only makes the installation of the arc extinguishing chamber 1 more convenient, but also ensures that the arc extinguishing chamber 1 is fixed effectively for a long time and is not affected by high temperature.
When the movable contact 3 contacts the fixed contact 4, the first end of the working surface 31 of the movable contact 3 contacts the fixed contact 4 first, and other parts of the working surface 31 of the movable contact 3 contact the fixed contact 4 sequentially along with the elastic deformation of the movable spring 7. When the movable contact 3 is disconnected from the fixed contact 4, the movable reed 7 is reset by means of self elasticity, so that the second end of the working surface of the movable reed leaves the fixed contact 4 at first, and the first end of the working surface 31 leaves the fixed contact 4 at last, therefore, the first end of the working surface 31 of the movable contact is an arcing point (namely, the position generated by the electric arc 6) when the movable contact 3 is disconnected from the fixed contact 4, and the arcing point is close to the second side plate 12 of the arc extinguishing cover, so that the electric arc can be effectively shielded and extinguished by the two first side plates 11 and the second side plate 12 of the arc extinguishing cover 1, and the arc extinguishing effect of the arc extinguishing cover 1 is improved. In particular, the arc 6 is elongated upward by the said blow-out magnet 8 and is effectively blocked and extinguished by the obliquely arranged upper side plate 122 of the second side plate 12. Thus, the arc extinguishing performance of the present utility model is greatly improved, and arc erosion to the magnetic circuit portion 10 above the contact and its coil is effectively avoided.
The relay for improving arc extinguishing performance of the present utility model does not involve parts (such as the specific construction of the magnetic circuit system 10, etc.) which are the same as or can be realized by the prior art.
The above embodiment is only used to further illustrate a relay for improving arc extinguishing performance of the present utility model, but the present utility model is not limited to the embodiment, and any simple modification, equivalent variation and modification of the above embodiment according to the technical substance of the present utility model falls within the protection scope of the technical solution of the present utility model.
Claims (10)
1. The relay comprises a base, a magnetic circuit system, a contact system and an arc-extinguishing cover, wherein the arc-extinguishing cover comprises two first side plates which are oppositely arranged and a second side plate which is arranged between one side ends of the two first side plates; the contact system comprises a movable spring part and a static spring part which are matched with each other, wherein the movable spring part comprises a movable reed and a movable contact arranged on the movable reed, and the static spring part comprises a static reed and a static contact arranged on the static reed; the arc-extinguishing chamber encloses the movable contact and the fixed contact, the arrangement direction of the movable contact and the fixed contact is consistent with the arrangement direction of the two first side plates, and a working surface of the movable contact for contact fit with the fixed contact is provided with a first end close to the second side plate and a second end far away from the second side plate; the method is characterized in that: when the movable contact is disconnected from the stationary contact, the second end of the working surface is firstly separated from the stationary contact, and the first end of the working surface is separated from the stationary contact at the latest.
2. The relay for improving arc extinguishing performance according to claim 1, wherein: the working surface is inclined in a direction that the first end of the working surface is closer to the stationary contact than the second end of the working surface, and the inclination angle is greater than or equal to 5 degrees.
3. The relay for improving arc extinguishing performance according to claim 1, wherein: the second side plate comprises a lower side plate and an upper side plate arranged at the upper end of the lower side plate, and the upper side plate is an inclined plate inclined towards the inner side of the arc extinguishing chamber.
4. A relay for improving arc extinguishing performance according to any one of claims 1-3, characterized in that: the arc blowing magnetic steel is arranged on the base and located on the outer side of the second side plate, and one of the N pole and the S pole of the arc blowing magnetic steel faces the second side plate.
5. The relay for improving arc extinguishing performance according to claim 1, wherein: an opening is formed between the other side ends of the two first side plates, a slot of the arc-extinguishing cover is arranged on the base, the bottom of the arc-extinguishing cover is inserted into the slot, and the opening is deformed in a shrinking manner, so that the bottom of the arc-extinguishing cover is clamped in the slot.
6. The relay for improving arc extinguishing performance according to claim 5, wherein: the arc extinguishing chamber further comprises two plugboards, wherein the two plugboards are respectively arranged at the bottom ends of the two first side plates one by one and extend downwards, and the two plugboards are respectively inserted into the slots.
7. The relay for improving arc extinguishing performance according to claim 5 or 6, characterized in that: before the bottom of the arc extinguishing chamber is inserted into the slot, the distance between the two first side plates is gradually increased from one side end to the other side end.
8. The relay for improving arc extinguishing performance according to claim 5 or 6, characterized in that: the base is arranged on one side, close to the second side plate, of the slot, and a retaining wall is arranged in the middle of the retaining wall.
9. The relay for improving arc extinguishing performance according to claim 1, wherein: the movable spring part comprises two movable contacts, the two movable contacts are respectively positioned at two sides of the movable spring plate, the fixed spring part comprises two fixed spring plates, each fixed spring plate is respectively provided with one fixed contact, and the fixed contacts of the two fixed spring plates are oppositely arranged and are respectively matched with the two movable contacts on the movable spring plates one by one.
10. Relay for improving arc extinguishing performance according to claim 1 or 9, characterized in that: the number of the movable spring part, the fixed spring part and the arc extinguishing cover is respectively multiple, and the multiple fixed spring parts are arranged in two parallel rows; the static spring pieces of the static spring parts are respectively arranged on the base, the movable spring pieces of the movable spring parts are respectively vertical, the movable contact is arranged at the lower ends of the movable spring pieces, the upper ends of the movable contact are respectively and fixedly connected with the same plastic piece in an insert injection molding manner, and the plastic piece is fixedly connected with the armature of the magnetic circuit system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320016081.9U CN219180388U (en) | 2023-01-04 | 2023-01-04 | Relay for improving arc extinguishing performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320016081.9U CN219180388U (en) | 2023-01-04 | 2023-01-04 | Relay for improving arc extinguishing performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219180388U true CN219180388U (en) | 2023-06-13 |
Family
ID=86671043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320016081.9U Active CN219180388U (en) | 2023-01-04 | 2023-01-04 | Relay for improving arc extinguishing performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219180388U (en) |
-
2023
- 2023-01-04 CN CN202320016081.9U patent/CN219180388U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1906430B1 (en) | Electrical switching apparatus including a split core slot motor and method of installing a slot motor assembly in a circuit interrupter | |
| EP3223293B1 (en) | Electrical switching apparatus, and arc chamber assembly and associated circuit protection method | |
| WO2022057606A1 (en) | Direct current contactor, distribution box, power battery assembly, and vehicle | |
| CN103426687A (en) | Clapper-type electromagnetic relay | |
| EP0210727B1 (en) | High current double-break electrical contactor | |
| CN219180388U (en) | Relay for improving arc extinguishing performance | |
| CN108321036B (en) | Electromagnetic relay capable of resisting lightning stroke current | |
| CN116031088A (en) | Relay capable of improving arc extinguishing performance | |
| CN211208341U (en) | Inverted insertion structure of static spring | |
| CN110349794B (en) | Circuit breaker | |
| CN216648115U (en) | Direct current contactor, direct current circuit and consumer | |
| KR880001427Y1 (en) | Electromagnetic switchgear | |
| CN115763182A (en) | Arc extinguishing module | |
| CN212136359U (en) | Direct-current relay capable of improving arc extinguishing capacity | |
| CN211125548U (en) | Contact system of universal circuit breaker | |
| CN219286301U (en) | Small electromagnetic relay | |
| CN217822460U (en) | High-efficient arc extinguishing magnetic latching relay | |
| KR102628376B1 (en) | Relay | |
| CN218385044U (en) | Relay | |
| CN215220638U (en) | Heavy current circuit breaker | |
| CN217035552U (en) | High-voltage direct-current relay for magnetic steel arc extinction | |
| CN218299710U (en) | Contactor with a magnetic circuit having a magnetic core | |
| CN214753450U (en) | Arc extinguish chamber and direct current contactor | |
| CN117457453B (en) | Arc extinguishing structure of circuit breaker and circuit breaker | |
| CN219832528U (en) | Miniature circuit breaker plastic case convenient to use |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |