CN202230964U - Over-voltage protection type electric leakage breaker 36mm in width - Google Patents

Abstract

The utility model discloses an over-voltage protection type electric leakage breaker 36mm in width, which comprises an L pole portion and an N pole portion. The L pole portion comprises a handle, an electromagnetic system, a thermal release system and a release connecting rod. A moving iron core and a static iron core in the electromagnetic system attract for release of the breaker if a short circuit fault occurs to a line, thereby realizing an effect of short circuit protection. The release connecting rod is pulled by a bimetallic strip in the thermal release system for release of the breaker if an overload fault occurs to the line, thereby realizing an effect of overload protection. The N pole portion of the breaker comprises an N pole moving contact contacting set, an electronic circuit board and release mechanisms. After the handle is disconnected, a moving contact in the N pole moving contact contacting set and an N pole static contact in the electromagnetic system are disconnected before a moving contact and a static contact one the L pole side are disconnected. If over-voltage and electric leakage faults occur to the line, a push rod is triggered by an iron core in the coil of the electronic circuit board, release members are triggered by the push rod and then a coupling shaft on the thermal release system is triggered, such that the breaker is released, and effects of over-voltage protection and earth leakage protection are realized.

Description

Width is the overvoltage protection type RCCB of 36mm

Affiliated technical field

The field is the low-voltage electrical apparatus field under the utility model, is that a kind of family expenses and similar site use short circuit, overload, overvoltage, four kinds of defencive functions of the earth leakage protective circuit breaker as one, the width 36mm of circuit breaker.

Background technology

The first item of 7.6.1 regulation in " the civil buildings electrical design standard " implemented on August 1st, 2008: low-voltage distributing line should act on and cut off power supply or send alarm signal according to different faults classification and concrete engine request installing short-circuit protection, overload protection, earth fault protection, overvoltage and under voltage protection.This prescribed specific low-voltage distributing line need increase overvoltage protection.Each family expenses and similar site must possess aftercurrent action protecting (being earth leakage protective).At present, the producer that produces circuit breaker is in order to realize overvoltage and the two kinds of defencive functions that leak electricity, employing be that the pattern of overvoltage release, leakage tripping device and circuit breaker assembly unit realizes.This realization pattern takies very big cabinet space for a moment, and two can make the mode of connection very complicated, and three meetings increase various costs, four meeting spent materials, and the waste resource, therefore also impracticable.

The utility model content

Cause in order to solve existing circuit breaker assembly unit overvoltage, leakage tripping device that width is big, wiring is complicated, increase cost, the deficiency of aspects such as waste resource; The utility model provides a kind of overpressure-proof type RCCB; This circuit breaker has only two moduluses wide (36mm); But have short-circuit protection, overload protection, overvoltage protection, four kinds of functions of earth leakage protective, and can test the reliability of circuit breaker overvoltage, electric leakage action through test button.

The utility model solves the technical scheme that its technical problem adopted:

A kind of width is the overvoltage protection type RCCB of 36mm, comprises L utmost point part and N utmost point part, and the L utmost point is a body part partly, has short circuit, overload protection function, and the N utmost point partly is electric leakage action, overvoltage action dropout part, it is characterized in that:

The L utmost point part of circuit breaker mainly comprises handle, electromagnetic system, hot tripping system, trip link, wherein:

Moving contact and the fixed contact in the electromagnetic system that the closure of handle and disjunction are controlled respectively in the hot tripping system switch on and off;

Comprise tripping mechanism in the hot tripping system, the dynamic and static iron core adhesive when short trouble appears in circuit in the electromagnetic system ejects the push rod in the electromagnetic system, touches the tripping in the hot tripping system, thereby makes circuit breaker tripping, plays the effect of short-circuit protection; Bimetal leaf in the hot tripping system is stirred trip link when overload fault appears in circuit, make circuit breaker tripping thereby stir tripping, plays the effect of overload protection;

The N utmost point part of circuit breaker mainly comprises N utmost point moving contact contact group, electronic circuit board, tripping mechanism, wherein:

After the close handles; Moving contact in the N utmost point moving contact contact group and the N utmost point fixed contact in the electromagnetic system are connected prior to the dynamic and static contact of L utmost point side; Behind the disjunction handle, the dynamic and static contact in L utmost point side behind moving contact in the N utmost point moving contact contact group and the N utmost point fixed contact in the electromagnetic system breaks off;

When occurring overvoltage, leak current fault in the circuit; Iron core in the coil of electronic circuit board touches push rod, and push rod touches the dropout part and makes the tripping action, and tripping touches the universal driving shaft on the hot tripping system; Make circuit breaker tripping, played overvoltage protection and earth leakage protective effect;

The N utmost point of circuit breaker partly forms interlock through universal driving shaft and the body part that tripping touches on the hot tripping system, realizes the earth leakage protective and the over-voltage protection function of circuit breaker.

The utility model adopts the wide insulation crust of 36mm, and the L utmost point side of circuit breaker is the body part of circuit breaker, realizes short circuit, overload protection to circuit respectively through electromagnetic system and hot tripping system.The N utmost point of circuit breaker partly is overvoltage, earth leakage protective dropout part, mainly comprises tripping mechanism and electronic circuit board.Three interfaces on the electronic circuit board weld conducting strip, test loop conducting strip and the N utmost point lead-in wire of the L utmost point respectively, to obtain voltage.When electronic circuit board detect circuit occur the overvoltage fault with (or) during electric leakage signal; Will impel the iron core in the electronic circuit board coil under the effect of screwed pipe power, to hit left, actuating mechanism, and then touch the universal driving shaft of L utmost point side; Make whole circuit breaker disjunction; So just make whole circuit breaker realize overvoltage protection and creepage protection function, press the test button of N utmost point side equally, can verify the reliability of the action of circuit breaker overvoltage, electric leakage action.In addition, clear and definite wiring sign is arranged, as long as just passable on the circuit breaker by normal L line and the wiring of N line.

The beneficial effect of the utility model is that circuit breaker has short-circuit protection, overload protection, overvoltage protection and four kinds of functions of earth leakage protective simultaneously, and width has only 36mm, has realized the characteristics that function is many, volume is little, has made things convenient for manufacturer and user biglyyer.

Description of drawings

Fig. 1 is the utility model circuit breaker axonometric drawing;

Fig. 2 is the structural representation of the utility model circuit breaker L utmost point side;

Fig. 3, Fig. 4 are the structural representations of the utility model circuit breaker N utmost point side.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is further specified.

In the accompanying drawings, the length and the local size of circuit breaker have been marked.

As shown in Figure 1, the housing width of circuit breaker is 36mm.

As shown in Figure 2, in the wide housing of 36mm, L utmost point side mainly is made up of handle (29), electromagnetic system (26), hot tripping system (36), arc control device (25), trip link (35).After the close handles (29), the fixed contact in moving contact in the hot tripping system (36) and the electromagnetic system (26) is connected, and behind the disjunction handle (29), dynamic and static contact breaks off, and circuit breaker is in trip status.Hot tripping system comprises tripping mechanism in (36), and when short trouble appearred in circuit, the dynamic and static iron core adhesive in the electromagnetic system (26) impelled push rod to eject, and touches the tripping in the hot tripping system (36), thereby makes circuit breaker tripping, plays the effect of short-circuit protection; When overload fault appearred in circuit, the bimetal leaf in the hot tripping system (36) was crooked to the right, stirs trip link (35) simultaneously, makes circuit breaker tripping thereby stir tripping, plays the effect of overload protection; The effect of arc control device (25) is that the electric arc that the circuit breaker disjunction produces is extinguished protective circuit breaker itself rapidly.

Like Fig. 3 and shown in Figure 4, N utmost point side mainly is made up of N utmost point moving contact contact group (2), electronic circuit board (22), guard shield (11), spring leaf (8), tripping mechanism (comprising 6,12,13,14,15,16,17,18), tripping button spring (7), test button (10).Three interfaces of electronic circuit board (22) are firm with the wire bonds that N utmost point moving contact contacts in the group (2) with conducting strip (9), conducting strip (21) respectively.After the close handles (29); N utmost point fixed contact in moving contact in the N utmost point moving contact contact group (2) and the electromagnetic system (26) is connected; This connection will be prior to the connection of the dynamic and static contact of L utmost point side, and when connecting, spring leaf (8) is connected with the conducting strip in the electromagnetic system (26); Thereby give electronic circuit board (22) power supply, make it have overvoltage protection and creepage protection function.

Behind the disjunction handle, moving contact in the N utmost point moving contact contact group (2) and electromagnetic system (26) N utmost point fixed contact break off, and this breaks off wants the back in the disconnection of the dynamic and static contact of L utmost point side, and simultaneously, the conducting strip in spring leaf (8) and the electromagnetic system (26) breaks off.In use; When occurring overvoltage, leak current fault in the circuit, the iron core (19) in electronic circuit board (22) coil hits left under the effect of screwed pipe power, touches push rod (14); Push rod (14) touches dropout part (17); Then make tripping (12) action, tripping (12) touches the universal driving shaft on the hot tripping system (36), makes circuit breaker tripping.Overvoltage protection and earth leakage protective effect have been played.

Claims (1)

1. the overvoltage protection type RCCB that width is 36mm comprises L utmost point part and N utmost point part, and the L utmost point is a body part partly, has short circuit, overload protection function, and the N utmost point partly is electric leakage action, overvoltage action dropout part, it is characterized in that:

The L utmost point part of circuit breaker mainly comprises handle, electromagnetic system, hot tripping system, trip link, wherein:

Moving contact and the fixed contact in the electromagnetic system that the closure of handle and disjunction are controlled respectively in the hot tripping system switch on and off;

Comprise tripping mechanism in the hot tripping system, the dynamic and static iron core adhesive when short trouble appears in circuit in the electromagnetic system ejects the push rod in the electromagnetic system, touches the tripping in the hot tripping system, thereby makes circuit breaker tripping, plays the effect of short-circuit protection; Bimetal leaf in the hot tripping system is stirred trip link when overload fault appears in circuit, make circuit breaker tripping thereby stir tripping, plays the effect of overload protection;

The N utmost point part of circuit breaker mainly comprises N utmost point moving contact contact group, electronic circuit board, tripping mechanism, wherein:

After the close handles; Moving contact in the N utmost point moving contact contact group and the N utmost point fixed contact in the electromagnetic system are connected prior to the dynamic and static contact of L utmost point side; Behind the disjunction handle, the dynamic and static contact in L utmost point side behind moving contact in the N utmost point moving contact contact group and the N utmost point fixed contact in the electromagnetic system breaks off;

When occurring overvoltage, leak current fault in the circuit; Iron core in the coil of electronic circuit board touches push rod, and push rod touches the dropout part and makes the tripping action, and tripping touches the universal driving shaft on the hot tripping system; Make circuit breaker tripping, played overvoltage protection and earth leakage protective effect;

The N utmost point of circuit breaker partly forms interlock through universal driving shaft and the body part that tripping touches on the hot tripping system, realizes the earth leakage protective and the over-voltage protection function of circuit breaker.

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