CN201966159U - Multi-break circuit breaker - Google Patents

Abstract

The utility model provides a multi-break circuit breaker, which uses a preset connection mode. At least one twin static contact is arranged inside a base, at least two groups of static contact points corresponding to two groups of dynamic contacts which are opposite to a current flow direction are arranged on the static contact, and a group of the static contact points are corresponding to an arc exhausting chamber. A plurality of breakpoints are connected in series inside the circuit breaker base, so that users do not need to connect wires at positions of connecting terminals in order to connect the breakpoints in series. In addition, long-time-delay characteristics are set in the preset connection mode, and operation characteristics of users cannot be affected in usage.

Description

Multibreak circuit breaker

Technical field

The utility model relates to breaker of plastic casing, belongs to the low-voltage electrical apparatus field.

Background technology

Along with the development of new energy technology, low voltage component is had higher requirement.Especially along with constantly the developing of photovoltaic power plant, the performance index of the protection component that power plant is required have also had higher requirement.In the photo-voltaic power supply direct current system, the rated operational voltage of low-voltage electrical apparatus even up to DC1500V.Adopt the method for breakpoint series connection, can improve the interrupting performance of circuit breaker.To this, domestic and international many producers have also launched respectively various breaker connection application schemes, carry out wiring at the external connection terminal place of circuit breaker, make the two poles of the earth of circuit breaker or more multi-stage series connection get up to form the series connection breakpoint.Though this application scheme can reach the requirement of high working voltage, but often the wiring at engineering application middle connecting terminal place can not implemented according to the length 2m of 8.3.3.3.4 regulation among the GB 14048.2, cause heat accumulation herein to increase like this, heat is behind circuit breaker inside, and directly the long delay operating characteristics of bimetal leaf as the long delay release adopted in influence.

The utility model content

The utility model proposes a kind of multibreak circuit breaker, adopt and to preset connected mode, a plurality of breakpoints are connected in Shell of circuit breaker inside, need not the user for the breakpoint of connecting voluntarily in the wiring of binding post place.The long delay characteristic also is to adjust under this mode that presets wiring, and its operating characteristics can not be affected yet when the user used.

The utility model is by the following technical solutions:

A kind of multibreak circuit breaker comprises pedestal, moving contact, arc control device, wherein:

At least one places on the interior twin fixed contact of pedestal has two groups of fixed contacts;

Two groups of moving contacts that these two groups of fixed contacts are opposite with current direction respectively are corresponding;

One group of corresponding arc control device of fixed contact.

Further:

Two groups of fixed contacts on the described twin fixed contact lay respectively in two adjacent chambers of pedestal, and have groove on the insulation wall between two chambeies.

Described twin fixed contact is made of solder contacts on the conducting base of one, or is made of solder contacts on the conducting base of combination.

Groove on the described insulation wall between two fixed contacts of twin fixed contact or two fixed contacts above.

The utility model adopts and to preset connected mode, in Shell of circuit breaker inside a plurality of breakpoints is connected, need not the user for the breakpoint of connecting voluntarily in the wiring of binding post place.The long delay characteristic also is to adjust under this mode that presets wiring, and its operating characteristics can not be affected yet when the user used.

Description of drawings

Fig. 1 is the structure principle chart of the utility model embodiment 1;

Fig. 2 is the structural representation of the utility model embodiment 1;

Fig. 3 hides structural representation behind the arc control device among Fig. 2 for the utility model;

Fig. 4 is pedestal and a twin fixed contact combining structure schematic diagram among the utility model embodiment 1;

Fig. 5 is the axle side structure schematic diagram of twin fixed contact among the utility model embodiment 1;

Fig. 6 is the structure principle chart of the utility model embodiment 2;

Fig. 7 is the structural representation of the utility model embodiment 2;

Fig. 8 is the structural representation of twin fixed contact among the utility model embodiment 2.

Embodiment

The embodiment that provides below in conjunction with accompanying drawing is described in further details the utility model.

Embodiment 1 of the present utility model shown in Fig. 1-5, comprises pedestal 1, moving contact 3, arc control device 4.Have two groups of fixed contacts 21 on the twin fixed contact 2 that places in the pedestal, one group of fixed contact 21 corresponding moving contact 3, another group fixed contact 21 corresponding U type moving contacts 31, the current direction that flows through these two moving contacts 3 and 31 is opposite, has represented current direction with arrow among Fig. 2; In order to satisfy the disjunction requirement, one group of fixed contact 21 corresponding arc control device 4.

Twin fixed contact 2 is made of welding fixed contact 21 on the conducting base 22 of one.

Two fixed contacts 21 on the twin fixed contact 2 lay respectively in two adjacent chambers 14 of pedestal 1, and have groove 13 on the insulation wall 15 between two chambeies 14, and this groove 13 has constituted the passage that holds two groups of conducting bases 22 between the fixed contact 21.

15 groove 13 is between two fixed contacts 21 of twin fixed contact 2 on the insulation wall of pedestal 1.

The end of incoming cables 16 of circuit breaker, leading-out terminal 17 lay respectively at the upper end 11 and lower end 12 of pedestal 1.

Breakpoint is made of one group of moving contact and the one group of fixed contact 21 on moving contact 3 or the U type moving contact 31, in the present embodiment 1, constitutes a utmost point of circuit breaker between end of incoming cables 16 and leading-out terminal 17, and this extremely has three groups of breakpoints.

Embodiment 2 of the present utility model shown in Fig. 6-8, comprises pedestal 1, moving contact 3, arc control device 4.Have two groups of fixed contacts 21 on the twin fixed contact 2 that places in the pedestal, one group of fixed contact 21 corresponding moving contact 3, another group fixed contact 21 corresponding U type moving contacts 31, the current direction that flows through these two moving contacts 3 and 31 is opposite, has represented current direction with arrow among Fig. 2; In order to satisfy the disjunction requirement, one group of fixed contact 21 corresponding arc control device 4.

Twin fixed contact 2 is made of welding fixed contact 21 on the conducting base 22 of combination, the conducting base 22 of combination is made up of conducting base 1, conducting base 2 222, conducting base 3 223, as shown in Figure 8, connected mode therebetween also can adopt connected modes such as screw connection for welding.Fixed contact 21 on the twin fixed contact 2 lays respectively in two adjacent chambers 14 of pedestal, and has groove 13 on the insulation wall 15 between two chambeies 14, and this groove 13 has constituted the passage that holds two groups of conducting bases 22 between the fixed contact 21.

Breakpoint is made of one group of moving contact and the one group of fixed contact 21 on the moving contact 3, in the present embodiment 2, constitutes a utmost point of circuit breaker between end of incoming cables 16 and leading-out terminal 17, and this extremely has two groups of breakpoints.

Claims (4)

1. a multibreak circuit breaker comprises pedestal, moving contact, arc control device, it is characterized in that:

At least one places on the interior twin fixed contact of pedestal has two groups of fixed contacts;

Two groups of moving contacts that these two groups of fixed contacts are opposite with current direction respectively are corresponding;

One group of corresponding arc control device of fixed contact.

2. multibreak circuit breaker according to claim 1 is characterized in that:

Two groups of fixed contacts on the described twin fixed contact lay respectively in two adjacent chambers of pedestal, and have groove on the insulation wall between two chambeies.

3. multibreak circuit breaker according to claim 1 is characterized in that:

Described twin fixed contact is made of solder contacts on the conducting base of one, or is made of solder contacts on the conducting base of combination.

4. multibreak circuit breaker according to claim 2 is characterised in that:

Groove on the described insulation wall is between two fixed contacts of twin fixed contact.

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