CN203931973U - Low-voltage circuit breaker - Google Patents
Low-voltage circuit breaker Download PDFInfo
- Publication number
- CN203931973U CN203931973U CN201420373613.5U CN201420373613U CN203931973U CN 203931973 U CN203931973 U CN 203931973U CN 201420373613 U CN201420373613 U CN 201420373613U CN 203931973 U CN203931973 U CN 203931973U
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- Prior art keywords
- electric current
- short
- main framing
- contact
- circuited coil
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- Expired - Fee Related
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- 238000009432 framing Methods 0.000 claims abstract description 28
- 206010037660 Pyrexia Diseases 0.000 claims abstract description 15
- 238000009413 insulation Methods 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000005611 electricity Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model discloses a kind of low-voltage circuit breaker, comprise the de-mouthpart of main framing, switch short circuit overload, lid, short-circuited coil action link rod, contact holder, base, terminals, short-circuited coil, insulation connect push pedal, movable contact spot film, contact spring, arc-extinguish chamber, adjusting electric current scale plate, electric current governor motion, bimetallic fever tablet, draw back plate support, stationary contact in flakes, chain joint chair jump ring, action link rod back-moving spring and short-circuited coil suction disc.The utility model can play protection motor electric pump; Restart the effects such as machine operation.
Description
Technical field
The utility model relates to a kind of circuit breaker, is specifically a kind of low-voltage circuit breaker, and voltage is between 220V-660V, and 220 volts of disjunctions of specified short circuit breaking capacity can 1.5 kilo-amperes 380 volts.
Background technology
Low-voltage circuit breaker (once claiming automatic switch) is that one not only can be connected and disjunction normal duty electric current and overload electric current, can also connect the device for switching with disjunction short circuit current.Low-voltage circuit breaker except rising control action, also has certain protection electric equipment function in circuit, as overload, short circuit, under-voltage and protection etc.The mode classification of low-voltage circuit breaker is a lot, divides by use classes, has selection type (protective device parameter is adjustable) and non-selection type (protective device parameter is non-adjustable), divides by arc-extinguishing medium, has air type and vacuum type (the domestic air type that mostly is at present).Low-voltage circuit breaker range of capacity is very large, and low-voltage circuit breaker is widely used in low-voltage distribution system outgoings at different levels, the power supply control of various plant equipment and the control and protection of electric terminal.
Utility model content
The purpose of this utility model is to provide a kind of low-voltage circuit breaker at this; This low-voltage circuit breaker (hereinafter to be referred as circuit breaker) is applicable to exchange 50Hz; rated operational voltage is to 660V and following; in the circuit of rated current 0.1A to 20A, as the use of the overload short circuit protection of motor, also can be used as the overload of electric equipment in distribution line, the use of short-circuit protection.
The utility model is to realize like this, construct a kind of low-voltage circuit breaker, it is characterized in that: comprise the de-mouthpart of main framing, switch short circuit overload, lid, short-circuited coil action link rod, contact holder, base, terminals, short-circuited coil, insulation connect push pedal, movable contact spot film, contact spring, arc-extinguish chamber, adjusting electric current scale plate, electric current governor motion, bimetallic fever tablet (thermal element), draw back plate support, stationary contact in flakes, chain joint chair jump ring, action link rod back-moving spring and short-circuited coil suction disc;
Contact holder is fixedly installed on base, and movable contact spot film is installed in contact holder by contact spring, and contact holder is interspersed in main framing, and main framing entirety is buckled on base by chain joint chair jump ring; Lid is placed on the de-mouthpart of switch short circuit overload top, and the two side ends corresponding position of main framing is all symmetrical arranged terminals, and electric current governor motion and bimetallic fever tablet are all fixed on main framing;
Short-circuited coil action link rod is arranged on the de-mouthpart of switch short circuit overload side, short-circuited coil is fixedly mounted on main framing, insulation connects push pedal and is arranged on electric current governor motion, bimetallic fever tablet and regulates above electric current scale plate, arc-extinguish chamber is between movable contact spot film side and base, regulate electric current scale plate to be arranged between electric current governor motion and lid, draw back plate support is arranged on main framing, and stationary contact is arranged on below terminals and between main framing and base in flakes.
The utility model has the advantage of: low-voltage circuit breaker described in the utility model, has following characteristics: after electric current adjustment is adjusted to and needed the scope of application;
1, when voltage is in the situations such as temperature rise overload, obstruction, short circuit, low-voltage, after exceeding adjusting range, can automatically cut off circuit breaker power supply, thereby play the effect of protection motor electric pump.
2, as electric pump (wherein high lift pump at low lift in service), motor overload work meeting causes that motor temperature is too high, and electric current increases, burn out motor and water pump, this circuit breaker meeting automatic cut-off power, after Xu's row fault, after hand-reset, restart machine operation;
3, protection motor, water pump circuit, energy automatic cut-off power, does not make motor burn out;
4, motor, water pump at bearing, impeller, stuck, electric current increases while blocking, when motor produces overload, by regulating electric current, while reaching predetermined value, current-release device automatic cut-off power, thereby do not make motor burn out, after fixing a breakdown, reuse startup;
5, after getting rid of, press cut-off push starter motor water pump until motor, water pump fault.
Brief description of the drawings
Fig. 1 is the utility model low-voltage circuit breaker external overall schematic diagram
Fig. 2 is the utility model low-voltage circuit breaker integrated connection schematic diagram
Fig. 3 is the utility model base portion structural representation
Fig. 4 is the trans limit delayed release of the utility model double-metal sheet type schematic diagram
Fig. 5 is the utility model electromagnetic type instantaneous release
Fig. 6 is the de-mouthpart of the utility model switch short circuit overload
Fig. 7 is the schematic diagram at the utility model bimetallic fever tablet position
Fig. 8 is the utility model electric current governor motion
Fig. 9 is the utility model movable contact spot film
Figure 10 is the utility model bimetallic fever tablet
Figure 11 is the utility model draw back plate support
Figure 12 is the utility model arc-extinguish chamber
Figure 13 is the utility model contact spring
Figure 14 is the utility model contact holder
Figure 15 is the utility model base
Figure 16 is the utility model lid
Figure 17 is the utility model movable contact spot film
Figure 18 is that the utility model regulates electric current scale plate
Figure 19 is the utility model short-circuited coil
Figure 20 is the utility model terminals
Figure 21 is that the utility model insulation connects push pedal
Figure 22 is the utility model short-circuited coil action link rod
Figure 23 is the utility model main framing
Figure 24 is the utility model short-circuited coil suction disc
Figure 25 is the utility model circuit block diagram
Figure 26 is the utility model application winding diagram
Wherein: 1, main framing, 2, the de-mouthpart of switch short circuit overload, 3, lid, 4, short-circuited coil action link rod, 5, contact holder, 6, base, 7, terminals, 8, short-circuited coil, 9, insulation connects push pedal, 10, movable contact spot film, 11, contact spring, 12, arc-extinguish chamber, 13, regulate electric current scale plate, 14, electric current governor motion, 15, bimetallic fever tablet, 16, draw back plate support, 17, stationary contact in flakes, 18, operating mechanism and chain joint chair jump ring, 19, action link rod back-moving spring, 20, short-circuited coil suction disc.
Embodiment
Below in conjunction with accompanying drawing, 1-25 is elaborated to the utility model, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1-2, utility model provides a kind of low-voltage circuit breaker at this, comprise the de-mouthpart 2 of main framing 1, switch short circuit overload, lid 3, coil motion connecting rod 4, contact holder 5, base 6, terminals 7, short-circuited coil 8, insulation connect push pedal 9, movable contact spot film 10, contact spring 11, arc-extinguish chamber 12, regulate electric current scale plate 13, electric current governor motion 14, bimetallic fever tablet 15, draw back plate support 16, stationary contact in flakes 17, chain joint chair jump ring 18, action link rod back-moving spring 19, short-circuited coil suction disc 20.
Contact holder 5 is fixedly installed on base 6, and movable contact spot film 10 is installed in contact holder 5 by contact spring 11, and contact holder 5 is interspersed in main framing 1, and main framing 1 entirety is buckled on base 6 by chain joint chair jump ring 18; Lid 3 is placed on the de-mouthpart of switch short circuit overload 2 tops, and the two side ends corresponding position of main framing 1 is all symmetrical arranged terminals 7, and electric current governor motion 14 and bimetallic fever tablet 15 are all fixed on main framing 1.
Short-circuited coil 8 is fixedly mounted on main framing 1, coil motion connecting rod 4 is arranged on the de-mouthpart of switch short circuit overload 2 sides, short-circuited coil 8 is installed below the suction disc 20 of short-circuited coil, after short circuit, electric current reaches 12 times, coil produces magnetic field, coil suction disc is down inhaled, coil motion connecting rod 4 is together down inhaled simultaneously, thereby moving, the de-mouthpart 2 of switch short circuit overload cuts off the electricity supply (after short circuit, electric current reaches after 12 times, short-circuited coil produce magnetic field within 0.2 second moment the suction disc 20 of short-circuited coil 8 correspondences toward drop-down, together make action link rod 4 toward drop-down, make de-mouthpart 2 action power dumps of switch short circuit overload).
Regulate electric current scale plate 13 to be arranged between electric current governor motion 14 and lid 3, insulation connects push pedal 9 and is arranged on electric current governor motion 14, bimetallic fever tablet 15, in the draw-in groove of draw back plate support 16 above and corresponding to main framing 1, work as motor overload, in subnormal voltage operation, electric current exceedes outside setting current scope and (exceedes 1.05 times of electric currents, 2 hours bimetallic fever tablets 15 do not make insulation connect push pedal 9 and promote electric current governor motion 14, thereby the de-mouthpart 2 of the switch short circuit of being failure to actuate overload, in the time that electric current exceedes 1.3 times, after within 2 hours, bimetallic fever tablet 15 is bending, promote insulation and connect push pedal 9, promote again electric current governor motion 14, thereby the de-mouthpart 2 of step switch short circuit overload is cut off the electricity supply).
Arc-extinguish chamber 12 is arranged between movable contact spot film 10 sides and base 6, regulate electric current scale plate 13 to be arranged between electric current governor motion 14 and lid 3, draw back plate support 16 is arranged on main framing 1, and stationary contact 17 is arranged on below terminals 7 and between main framing 1 and base 6 in flakes.
Main application and the scope of application:
This low-voltage circuit breaker (hereinafter to be referred as circuit breaker) is applicable to exchange 50Hz; rated operational voltage is to 660V and following; in the circuit of rated current 0.1A to 20A, as the use of the overload short circuit protection of motor, also can be used as the overload of electric equipment in distribution line, the use of short-circuit protection.Under normal circumstances, also as the not frequent transitions of circuit and the not Fraquent start of motor water pump.
1, this circuit breaker mainly comprises mechanism, contact system, arc quenching system, release, insulating base and shell;
2, the release in circuit breaker is divided into two kinds, and a kind of is dual metal type inverse time-lag release for overload protection; Another kind is the electromagnetic release for short-circuit protection;
3, this circuit breaker is push-botton operation;
4, this circuit breaker is that long slab is installed before plate, can directly be assembled on the standard guide rail of wide 35mm;
5, there is release electric current metering needle in circuit breaker front, the drop-away current of can adjusting within the limits prescribed.
Circuit connects and current flowing principle:
The L utmost point mode of connection: first power supply enters fixed contact by terminals, presses switch, connects the stationary contact spot film of rear end to short-circuited coil by movable contact spot film, then arrives load to binding post;
The N utmost point mode of connection: source current enters bimetal leaf by binding post, arrives after heating wire to stationary contact spot film by bimetal leaf, press after switch, with action contact piece join to rear end fixed contact to after short-circuited coil to rear end terminals to load end.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (1)
1. a low-voltage circuit breaker, it is characterized in that: comprise main framing (1), the de-mouthpart (2) of switch short circuit overload, lid (3), short-circuited coil action link rod (4), contact holder (5), base (6), terminals (7), short-circuited coil (8), insulation connects push pedal (9), movable contact spot film (10), contact spring (11), arc-extinguish chamber (12), regulate electric current scale plate (13), electric current governor motion (14), bimetallic fever tablet (15), draw back plate support (16), stationary contact is (17) in flakes, chain joint chair jump ring (18), action link rod back-moving spring (19) and short-circuited coil suction disc (20),
Contact holder (5) is fixedly installed on base (6), movable contact spot film (10) is installed in contact holder (5) by contact spring (11), contact holder (5) is interspersed in main framing (1), and main framing (1) entirety is buckled on base (6) by chain joint chair jump ring (18); Lid (3) is placed on the de-mouthpart (2) of switch short circuit overload top, and the two side ends corresponding position of main framing (1) is all symmetrical arranged terminals (7), and electric current governor motion (14) and bimetallic fever tablet (15) are all fixed on main framing (1);
Short-circuited coil action link rod (4) is arranged on the de-mouthpart (2) of switch short circuit overload side, short-circuited coil (8) is fixedly mounted on main framing (1), insulation connects push pedal (9) and is arranged on electric current governor motion (14), bimetallic fever tablet (15) and adjusting electric current scale plate (13) are above, arc-extinguish chamber (12) is between movable contact spot film (10) side and base (6), regulate electric current scale plate (13) to be arranged between electric current governor motion (14) and lid (3), draw back plate support (16) is arranged on main framing (1), stationary contact in flakes (17) be arranged on terminals (7) below and be positioned at main framing (1) and base (6) between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420373613.5U CN203931973U (en) | 2014-07-08 | 2014-07-08 | Low-voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420373613.5U CN203931973U (en) | 2014-07-08 | 2014-07-08 | Low-voltage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203931973U true CN203931973U (en) | 2014-11-05 |
Family
ID=51827744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420373613.5U Expired - Fee Related CN203931973U (en) | 2014-07-08 | 2014-07-08 | Low-voltage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203931973U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571103A (en) * | 2019-09-06 | 2019-12-13 | 浙江中亿豪科技有限公司 | hydraulic electromagnetic breaker belt connector |
-
2014
- 2014-07-08 CN CN201420373613.5U patent/CN203931973U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571103A (en) * | 2019-09-06 | 2019-12-13 | 浙江中亿豪科技有限公司 | hydraulic electromagnetic breaker belt connector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 |