CN202996746U - Molded case circuit breaker equipped with short arcing device - Google Patents
Molded case circuit breaker equipped with short arcing device Download PDFInfo
- Publication number
- CN202996746U CN202996746U CN 201220699829 CN201220699829U CN202996746U CN 202996746 U CN202996746 U CN 202996746U CN 201220699829 CN201220699829 CN 201220699829 CN 201220699829 U CN201220699829 U CN 201220699829U CN 202996746 U CN202996746 U CN 202996746U
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- China
- Prior art keywords
- circuit breaker
- layer
- flash barrier
- arc
- groove
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- Expired - Lifetime
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Abstract
The utility model relates to a molded case circuit breaker with a short arcing device. The molded case circuit breaker is characterized by comprising a circuit breaker base, a cover arranged at a power wire inlet, an arc extinguishing chamber of which each phase is provided with an arc extinguishing column, and first and second layers of arc isolating boards, wherein the first layer of arc isolating board is provided with a plurality of long round holes and a groove, a bent part of the second layer of arc isolating board is provided with a groove, the first layer of arc isolating board and the second layer of arc isolating board are clamped and fixedly connected through the grooves, and each of the wall of the circuit breaker base and the cover arranged at the power wire inlet is provided with a groove which can be inserted in the first layer of arc isolating board and the second layer of arc isolating board. A circuit needs to be broken during the normal operation of the molded case circuit breaker equipped with the short arcing device, arcs are generated during the breaking process to extinguish arcs, the arcing time is reduced, the arc extinguishing effect is greatly improved, convenience is provided for the breaking of the circuit breaker, the switching-on/off reliability of an operating mechanism is improved, the molded case circuit breaker is compact in structure and smaller in volume, users can directly arrange a wire on a static contact without removing the cover, no junction plate is used for wiring, the processing cost is reduced, and short arcing is achieved.
Description
Technical field
The utility model belongs to a kind of low-voltage moulded case circuit breaker, particularly relates to the breaker of plastic casing with short arcing device that uses in a kind of low-voltage circuit breaker.
Background technology
In low voltage electrical apparatus industry, breaker of plastic casing mainly contains contact system, arc quenching system, enclosure system, operating system and tripping system composition at present.Contact system is comprised of dynamic/static contact, silver contact, arc angle and arc-extinguish chamber, and arc quenching system is comprised of parts such as arc extinguishing wall, arc extinguishing grid pieces and flash barriers.Though the part shape in breaker of plastic casing contact system and arc quenching system, size is different but the gas that produces when the disjunction short circuit current is very large, the rapid disjunction short circuit current of this arc energy that just requires breaker of plastic casing to produce in short-circuit process, the breaker of plastic casing with short arcing device has further improved arc quenching effect.
Summary of the invention
The plastics circuit breaker that the utility model provides a kind of arc quenching effect better to have short arcing device for the technical problem that exists in the solution known technology.
The utility model for the technical scheme that solves the technical problem that exists in known technology and take is: it includes lid and each arc control device with the extinguishing arc post of pedestal, the power line point of incoming cables of described circuit breaker, also include described each with rectangle ground floor flash barrier and U font second layer flash barrier outside the arc control device of extinguishing arc post; A plurality of slotted holes of double arrangement are arranged in the middle and upper part of described ground floor flash barrier, in its underpart edge, one groove is arranged; U font both sides one length of side of described its bent plate of second layer flash barrier is short on one side, and has one can make the groove of described ground floor flash barrier its lower edge and the bending part groove that the clamping of described second layer flash barrier is fixed together at the U of this bent plate font bending part; Described ground floor flash barrier and second layer flash barrier are connected with the described groove clamping that it respectively carries; A groove that is used for inserting described first and second layer flash barrier that fixing mutual clamping is solidly fixed is respectively arranged on the lid wall respect to one another of the base wall of each phase power line point of incoming cables of described circuit breaker base and described circuit breaker power supply line point of incoming cables in addition.
Advantage and the good effect that the utlity model has are: have the breaker of plastic casing of short arcing device at the normal disjunction circuit that needs in service, can produce electric arc in breaking course and impel arc extinction, reduce the arcing time, greatly improved arc blowout effect, be conducive to the disjunction of circuit breaker, make operating mechanism on/off switch reliability that raising arranged, compact conformation, reduce volume, need not tear open and cover the user and directly wire is arranged on fixed contact, do not use the joint cover wiring, namely reduced processing cost, realized again short arcing.
Description of drawings
Fig. 1 is the structural representation of the utility model ground floor flash barrier;
Fig. 2 is the structural representation of the utility model second layer flash barrier;
Fig. 3 is the structural representation after the one or two layer of flash barrier clamping of the utility model;
Fig. 4 is the structural representation of each phase power line point of incoming cables of the utility model circuit breaker base;
Fig. 5 is the structural representation of the lid of the utility model circuit breaker power supply line point of incoming cables;
Fig. 6 is the utility model circuit breaker power supply line point of incoming cables partial structurtes schematic diagram.
Embodiment
For further understanding summary of the invention of the present utility model, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
As shown in Figure 1, on ground floor flash barrier 1, with double Long Circle hole 2, a groove 3 is arranged at the bottom, and the electric arc that produces after short circuit can give off energy from double slotted eye and electric arc and can inhale arc.
As shown in Figure 2, second layer flash barrier 4 is with U-shaped curved and both sides are not of uniform size causes, and there is the groove 6 that inserts for one side of the groove 3 of ground floor flash barrier 1 minor face 5 of bending and the bending part on long limit.Give off energy after circuit breaker short circuit and electric arc is inhaled second layer flash barrier 4 after arc through ground floor flash barrier 1 and again absorbed and prevent from being sprayed onto on the wire that the user uses and cause scaling loss.
As shown in Figure 3, the first flash barrier 1 is inserted in groove 6 with U-shaped curved the second flash barrier 4, can with covering tightly tight fixing, can prevent effectively that the gas that produces after short circuit from flying out after inserting circuit breaker base.
As shown in Figure 4, first and second layer flash barrier 1 of installing of fixed card, 4 the position of inserting the groove 8 in circuit breaker base 7 with a U-shaped curved end.
As shown in Figure 5, first and second layer flash barrier 1 of installing of fixed card, 4 the U-shaped curved other end that do not have insert the position of the groove 10 in the lid 9 of circuit breaker power supply line leading-out terminal.
As shown in Figure 6, at first contact system is screwed on the pedestal 7 of breaker of plastic casing shell then the parts such as loading of operating system, tripping system successively, then the arc control device 11 in arc quenching system and arc control device 12 are respectively charged into the relevant position in breaker of plastic casing, first and second layer flash barrier 1 that will install again, 4 inserts in the groove 8 of pedestal 7 one sides with a U-shaped curved end, the other end is connected with lid 9 and puts into 10 li of grooves that cover 9 upside, at last the lid 9 use screws of breaker of plastic casing shell are screwed on, the upside of lid adopts the mode of opening wide to be convenient to terminal block and uses.
Claims (1)
1. breaker of plastic casing with short arcing device, it includes the lid of pedestal, power line point of incoming cables of described circuit breaker and each with the arc control device of extinguishing arc post, it is characterized in that: also include described each with rectangle ground floor flash barrier and U font second layer flash barrier outside the arc control device of extinguishing arc post; A plurality of slotted holes of double arrangement are arranged in the middle and upper part of described ground floor flash barrier, in its underpart edge, one groove is arranged; U font both sides one length of side of described its bent plate of second layer flash barrier is short on one side, and has one can make the groove of described ground floor flash barrier its lower edge and the bending part groove that the clamping of described second layer flash barrier is fixed together at the U of this bent plate font bending part; Described ground floor flash barrier and second layer flash barrier are connected with the described groove clamping that it respectively carries; A groove that is used for inserting described first and second layer flash barrier that fixing mutual clamping is solidly fixed is respectively arranged on the lid wall respect to one another of the base wall of each phase power line point of incoming cables of described circuit breaker base and described circuit breaker power supply line point of incoming cables in addition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220699829 CN202996746U (en) | 2012-12-18 | 2012-12-18 | Molded case circuit breaker equipped with short arcing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220699829 CN202996746U (en) | 2012-12-18 | 2012-12-18 | Molded case circuit breaker equipped with short arcing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202996746U true CN202996746U (en) | 2013-06-12 |
Family
ID=48567888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220699829 Expired - Lifetime CN202996746U (en) | 2012-12-18 | 2012-12-18 | Molded case circuit breaker equipped with short arcing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202996746U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103021755A (en) * | 2012-12-18 | 2013-04-03 | 天津市百利电气有限公司 | Molded case circuit breaker with short flashover device and high arc extinction effect |
-
2012
- 2012-12-18 CN CN 201220699829 patent/CN202996746U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103021755A (en) * | 2012-12-18 | 2013-04-03 | 天津市百利电气有限公司 | Molded case circuit breaker with short flashover device and high arc extinction effect |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130612 |
|
| CX01 | Expiry of patent term |