EP2030213B1 - Protection switch - Google Patents
Protection switch Download PDFInfo
- Publication number
- EP2030213B1 EP2030213B1 EP06805855A EP06805855A EP2030213B1 EP 2030213 B1 EP2030213 B1 EP 2030213B1 EP 06805855 A EP06805855 A EP 06805855A EP 06805855 A EP06805855 A EP 06805855A EP 2030213 B1 EP2030213 B1 EP 2030213B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- protection switch
- housing
- circuit breaker
- switch modules
- contact
- 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.)
- Not-in-force
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/08—Terminals; Connections
- H01H71/082—Connections between juxtaposed circuit breakers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/1009—Interconnected mechanisms
- H01H71/1018—Interconnected mechanisms with only external interconnections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/1009—Interconnected mechanisms
- H01H71/1027—Interconnected mechanisms comprising a bidirectional connecting member actuated by the opening movement of one pole to trip a neighbour pole
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/2409—Electromagnetic mechanisms combined with an electromagnetic current limiting mechanism
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/2454—Electromagnetic mechanisms characterised by the magnetic circuit or active magnetic elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
- H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
- H01H71/7427—Adjusting only the electrothermal mechanism
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H9/342—Venting arrangements for arc chutes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/46—Means for extinguishing or preventing arc between current-carrying parts using arcing horns
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H2009/348—Provisions for recirculation of arcing gasses to improve the arc extinguishing, e.g. move the arc quicker into the arcing chamber
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/08—Terminals; Connections
- H01H2071/086—Low power connections for auxiliary switches, e.g. shunt trip
Definitions
- the invention relates to a circuit breaker according to the preamble of claim 1.
- a circuit breaker is off WO 93/18353 A1 known.
- Another circuit breaker is off, for example FR 2 661 778 A1 known.
- the tripping mechanism of the known circuit breaker comprises an electromagnetic trigger and a bimetallic trigger.
- the electromagnetic triplet detects a short circuit
- the bimetallic trigger detects an overload condition.
- the corresponding trigger acts on a triggering arm, which in turn unlatches the switching arm and thus triggers the return of the switching arm into the open position.
- a circuit breaker of the abovementioned type is generally intended to induce the most rapid possible separation of the electrical connection formed between the moving contact and the fixed contact when the tripping condition occurs in order to effectively protect a circuit connected downstream of the circuit breaker against a short circuit and / or overload damage.
- a switching arc as inevitably arises in the switching operation between the moving contact and the fixed contact; be deleted as quickly as possible to bring the current flow to a standstill and avoid burning off the contact material as far as possible.
- the rapid deletion of the Druckilchtbogens is particularly important in short circuit and overload of particular importance, especially in these cases, the switching arc develops a particularly strong destructive effect due to the high current flow.
- a circuit breaker should be as simple as possible and inexpensive to manufacture but at the same time for manufacturing reasons.
- Circuit breakers of the above type are produced both in single-pole and multi-pole versions.
- Such a modular circuit breaker is for example off EP 0 538 149 A1 known.
- the object of the invention is to provide a circuit breaker which is particularly suitable against the background described above, in particular with regard to rational manufacturability.
- a coupling piece for this purpose, which serves both the mechanical fixation of the circuit breaker modules together, as well as a coupling of the manual actuation mechanism and the trigger mechanism of the adjacent circuit breaker modules causes.
- This coupling piece is in one piece in a particularly simple embodiment, in particular as a low-priced plastic injection molded part formed.
- a blind cover is also optionally provided, the in the manner of a modular system modular instead of the coupling piece on this outer housing front side is placed.
- each circuit breaker module To connect an electrical conductor, the or each circuit breaker module to a feed terminal, which is electrically connected in the module interior with the fixed contact.
- the Einspelsungsan gleich of each circuit breaker module preferably has a coupling contact, by means of which a plurality of juxtaposed Schutzschattermodule a multi-pole circuit breaker arrangement can be connected in parallel by means of a busbar. In this way, eliminates the need to wire each circuit breaker module input side separately. Rather, all circuit breaker modules are supplied in the manner of a power distributor via a common power supply line
- each circuit breaker module further comprises two signal terminals for connecting conductors that are electrically connected to a signal relay module inside. Also these signal connections is expediently connected in each case a coupling contact in parallel, via which the signal terminals of various circuit breaker modules are electrically connected.
- the or each coupling contact is arranged in a housing slot, which spans the entire housing width, so that for bridging the coupling contacts of adjacent circuit breaker modules designed as a profile component busbar in the housing slots can be inserted.
- the or each housing slot in terms of its dimensioning, i. its opening side and depth dimensioned such that the coupling contact is finger-safe received in the housing.
- the circuit breaker preferably further comprises a terminating strip of insulating material which is flush with each Genzousestimseite inserted into the housing slot and closes the housing slot to this end face in the inserted state ,
- the or each housing slot on each end face of the housing has a guide web, which preferably surrounds at least part of the end edge of the housing slot, but projects at least from both slot walls into the space recessed by the housing slot.
- This guide web serves, on the one hand, to fix it in the inserted state on the housing by positive engagement in a corresponding guide groove of the end strip.
- the embodiment of the invention described in the following figures relates to a kind of modular system modular circuit breaker 1, which can be realized by combining a number of components in single or multi-pole design.
- the core component of this modular system is a circuit breaker module 2, which in itself already forms a fully functional single-pole circuit breaker.
- Unipolar designs of the circuit breaker 1, as in particular in the Fig. 1 to 6 are represented, are essentially formed by a single circuit breaker module 2 accordingly.
- Multipole types of circuit breaker 1, as in the Fig. 17 to 21 are represented by stringing one of the number of poles of the circuit breaker 1 corresponding number of circuit breaker modules 2 are formed.
- the protection switch module 2 which is initially shown in a view from the outside, comprises a housing 3 made of insulating material.
- the circuit breaker module 2 is designed in the manner of a DIN rail mounted device.
- the housing 3 has correspondingly the characteristic for such devices, symmetrical to a front side 4 graded shape.
- a handle 6 of a pivot lever 7 out of the housing At an outstanding central part 5 of the front side 4 protrudes to actuate the circuit breaker module 2, a handle 6 of a pivot lever 7 out of the housing.
- the circuit breaker module 2 is provided with a receptacle, which is typical for DIN rail mounted devices, for latching the circuit breaker module 2 onto a mounting rail, in particular a DIN rail.
- a locking slide 10 is provided which is guided in a guide 11 of the housing 3 slidably.
- the locking slide 10 is provided with laterally molded spring arms 12 which cooperate with a - simplified - sawtooth contour of the guide 11 such that the locking slide 10 captively fixed in the mounting state in the guide and bistable between a detent position in which a latch 13 of the locking slide 10th protrudes into the receptacle 9, and a release position, in which the detent 13 is retracted from the receptacle 9, is displaceable.
- the bistable guide the locking slide 10 remains in the release position when it is manually withdrawn by a user in particular for disassembly of the circuit breaker module 2 from the detent position, so that the circuit breaker module 2 can be easily lifted from the mounting rail.
- the bistable latching of the locking slide 10 in the release position is particularly advantageous in order to remove several coherent or interconnected circuit breaker modules 2 together from a mounting rail without having to press the locking slide 10 of each circuit breaker module 2 simultaneously.
- the locking slide 10 is resiliently guided in the latching position by cooperation of the spring arms 12 with the sawtooth contour of the guide 11, so that the circuit breaker module 2 can be snapped by simply plugging it onto the mounting rail on this.
- each blind cover 15a, 15b is snapped onto each end face 14a, 14b of the housing 3, which closes the housing 3 in the region of the pivot lever 7 to the outside.
- Each blind cover 15a, 15b is snapped with three holding projections 16 in corresponding receptacles 17 of the housing 3.
- each blind cover 15a, 15b covered in its mounting position, in particular a provided in each end face 14a, 14b of the housing 3 engagement opening 18 through which the circuit breaker module 2 (as will be explained in more detail) in multi-pole embodiments of the circuit breaker 1 with adjacent circuit breaker modules 2 coupled is.
- Fig. 1 shows two types of blind covers 15a and 15b, which are alternatively auffact snapped onto the housing 3.
- the blind cover 15b differs from the blind covers 15a in that it is additionally provided with a rail 19, which in the assembled state (see. Fig. 3 ) Flanking the pivoting range of the handle 6 and thereby protect against accidental operation of the circuit breaker module. 2 acts.
- Fig. 2 shows the circuit breaker module 2 with the blind covers 15a mounted thereon.
- Fig. 3 shows in a corresponding representation, the circuit breaker module 2 mounted thereon blind covers 15b.
- the circuit breaker 1 further includes labels 20, which are used on both sides in the corresponding receptacles 21 of the housing 3 at the edges of the front page 4.
- the 4 to 6 show the example provided with blind covers 15a circuit breaker module 2 in plan view of the end face 14a (FIG. Fig. 5 ) or on the adjacent side surfaces 22a ( Fig. 4 ) and 22b ( Fig. 6 ) of the housing 3.
- a housing opening 23 is provided, via which a feed connection 24 is accessible for connecting an electrical supply conductor.
- the opposite side surface 22b is provided with a further housing opening 25, via which a load connection 26 is accessible.
- Each side surface 22a, 22b is additionally provided with a respective housing opening 27a or 27b, via which a respectively corresponding signal connection 28a or 28b is accessible.
- the feed terminal 24 is a coupling contact 29 connected in parallel.
- the coupling contact 29 is made accessible via a housing slot 30 from the outside.
- the housing slot 30 extends over the entire housing width, i. from the end face 14a to an opposite end face 14b, and is open to both end faces 14a and 14b.
- each signal terminal 28a and 28b, a further coupling terminal 31 a and 31 b connected in parallel, each of the coupling terminals 31 a and 31 b is accessible via a further housing slot 32 a and 32 b.
- Each housing slot 30,32a, 32b is dimensioned such that each arranged therein coupling contact 29 and 31 a, 31 b is hidden finger-safe and that the required creepage distances are complied with the housing surface. This is achieved in that the housing slots are particularly narrow and deep.
- the slot depth is in the case of the housing slot 30 about 20 mm, in the case of the housing slots 32a, 32b about 10 mm.
- the free slot width is in the case of the housing slot 30 about 4 mm and is in the rear area by guide webs 134, the Flank coupling contact 29 on both sides, reduced to about 1 mm to the outside.
- the free slot width is about 3 mm and is reduced at the rear to the outside to about 1 mm.
- Fig. 7 the circuit breaker module 2 is shown in an exploded view, in particular in which the recorded in the housing 3 functional parts of the circuit breaker module 2 are visible in a separate representation.
- the functional parts of the circuit breaker module 2 are essentially divided into a switching mechanism 40 and an extinguishing device 41.
- the switching mechanism 40 can in turn be subdivided into three functional subgroups, namely a manual operating mechanism 42, a switching arm 43 and a triggering mechanism 44.
- the manual operation mechanism 42 is essentially formed by the pivoting lever 7 and a coupling rod 45, the free end of which is bent approximately at right angles to form a driver 46.
- the manual operation mechanism 42 further includes a torsion spring 47.
- the switching arm 43 has a two-part design and comprises a contact lever 48 and a latch lever 49, which has a pawl 51 cooperating with the driver 46 at a rearward end 50 of the lever.
- the switching arm 43 is biased by a tension spring 52.
- the triggering mechanism 44 comprises a trigger slide 53, an overload release 55 formed essentially of a bimetallic strip 54 and an electromagnetic short-circuit release 56, which comprises a magnetic coil 57 with a magnetic core formed from two core disks 58, a magnetic yoke 49 and a magnet armature 60.
- the armature 60 is connected to a rod-shaped plunger 61 made of plastic and is biased by a compression spring 62.
- the extinguishing device 41 comprises a quenching chamber 63 with a package inserted therein of mutually parallel quenching plates 64 and a first track 65 and second track 66.
- the track rail 65 is integral with the Magnet yoke 59 is formed.
- the running rail 66 is formed together with a power supply 67 as an integrally continuous sheet metal part, wherein the power supply 67 simultaneously forms a support for the bimetallic strip 54.
- the extinguishing device 41 further comprises two cover plates 68a and 68b and baffles 69, which are integrally formed on the inner wall of the housing 3.
- the circuit breaker module 2 further comprises a signal contact device, which is essentially formed by a signal relay 71 which is connected to the signal connections 28a and 28b and the respectively connected coupling contacts 31a and 31b.
- the housing 3 consists of two parts, namely a housing shell 73 and a housing cover 74 which can be placed thereon.
- the housing shell 73 and the housing cover 74 are fixed captive in the assembled state by rivets 75 or screw to each other.
- FIG. 8 and 9 the above-described functional parts of the circuit breaker module 2 are shown in the assembled state, wherein Fig. 8 is a front view of the functional parts, as they would result in a view through the housing cover 74 through the inserted into the housing shell 73 functional parts.
- Fig. 9 shows the functional parts in a rear view, as they would result in a look through the bottom of the housing shell 73 therethrough.
- the housing shell 73 and the housing cover 74 are in the Fig. 8 and 9 omitted for the sake of clarity.
- the latch lever 49 of the switching arm 43 is pivotably mounted about a housing-fixed axis of rotation 80.
- the contact lever 48 is in turn articulated to a pivot 81 on the latch lever 49, so that the switching arm 43 has a certain flexibility in itself.
- the relative mobility of the contact lever 48 with respect of the pawl lever 49 is limited by a slot 82 at a rear end 83 of the contact lever 84, through which the rotation axis 80 passes.
- the rear end 83 opposite free end of the contact lever 48 forms a moving contact 84 which cooperates with a fixed contact 85 to switch a circuit.
- the fixed contact 85 is applied to an upper side of the magnetic yoke 59 at the base of the running rail 65 integrally connected thereto.
- the Fig. 8 and 9 show the circuit breaker module 2 in a closed state of the switching arm 43, in which the moving contact 84 forming the end of the contact lever 48 bears against the fixed contact 85.
- an electrically conductive connection is provided between the feed terminal 24 or coupling contact 29 and the load terminal 26, via the busbar 70, the magnetic coil 57, the yoke 59, the fixed contact 85, the contact lever 48 with the moving contact 84, the bimetallic strip 54 and an adjoining busbar 86 leads.
- the electrical connection between the rear end 83 of the contact lever 48 and the bimetallic strip 54 and between the bimetallic strip 54 and the bus bar 86 is closed by a respective stranded connection 87 a, 87 b, which in the Fig. 8 and 9 is indicated only schematically.
- tension spring 52 engages the contact lever 48 at a between the pivot 81 and the slot 82 (and thus also between the rotary joint 81 and the rotation axis 80) arranged on position.
- the opposite end of the tension spring 52 is re-mounted on the housing 3.
- the switching arm 43 is thus in total by the tension spring 52 in a rotational direction, which in the illustration Fig. 8 a rotation of the switching arm 43 in a clockwise direction, in the illustration according to Fig. 9 a rotation of the switching arm 43 corresponds counterclockwise, biased toward an open position.
- the position of the pawl arm 49 in this closed position is chosen such that the switching arm 43 is "pushed" to a certain extent during closing, that is, the contact lever 48 is clamped relative to the pawl lever 49.
- This tension ensures that the moving contact 84 is always biased against the fixed contact 85 in the closed position, wherein a successively increasing consumption of contact material in the course of the lifetime of the circuit breaker module 2 is compensated by the resilience of the contact lever 48.
- the pivot lever 7 is connected to the housing shell 73 between a in Fig. 7 shown first pivot position and one in the Fig. 8 and 9 shown second pivot position pivotally mounted about a housing-fixed pivot axis 88, wherein - like the Fig. 8 and 9 can be removed - the second pivot position of the pivot lever 7 corresponds to the closed position of the switching arm 43.
- the coupling rod 45 is pivotable with a fixed end 89 and radially movable with respect to the pivot lever 7 in a radial guide 90 of the pivot lever 7.
- the fixed end 89 is guided in a slotted guide 91, which is integrally formed on the inner wall of the housing shell 73 and the housing cover 74 and in the Fig. 8 and 9 is indicated only schematically.
- the slotted guide 91 runs in the manner of a spiral segment on the pivot axis 88, wherein for each position of the pivot lever 7 between the first and the second pivot position, a crossing point of the linear guide 90 and the slotted guide 91 exists, the one corresponding to this position of the pivot lever 7 position of the fixed end 89 of the coupling rod 45 defined.
- the coupling rod 45 is guided mainly linearly by the interaction of the radial guide 90 with the slide guide 91 at a pivoting of the pivot lever 7.
- the pivot lever 7 is biased by the torsion spring 47 in the direction of the first pivot position, so that it is in the second pivot position against the spring pressure the torsion spring 47 is deflected.
- the slide guide 91 is designed such that in the second pivot position mediated via the coupling rod 45 operative connection between the driver 46 and the fixed end 89 above (ie on the handle 6 facing side) of the pivot axis 88, so that the pivot lever 7 through the latching of the driver 46 is held with the pawl 51 of the latching arm 43 against the restoring force of the torsion spring 47 in the second pivot position.
- the manual operation mechanism 42 and the switching arm 43 are thus coupled to each other via the latching of the driver 46 with the pawl 51 so that they stabilize against the respective restoring force of the tension spring 52 and the torsion spring 47 in the closed position and the second pivot position.
- Kem reallyteil the release mechanism 42 is the trip slider 53 which is actuated both by the bit metal strip 54 of the overload release 55 and the plunger 61 of the short-circuit release 56, and the actuation of one of the triggers 55 or 56, the provision of the switching arm 43 from the closed position in FIG the open position causes.
- the trip slider 53 affects this recovery process in two ways, firstly disengaging the shift arm 53 from the cam 46, thereby initiating the automatic restoring process of the shift arm 43 under the action of the tension spring 52, and by pushing the shift arm 43 "to the other ", so he added a pulse pulse to overcome the inertia of the switching arm 43 during the recovery faster and thus to accelerate the switching process.
- Fig. 10 shows an enlarged view of the switching arm 43 again in its closed position in which the inter alia guided by the magnetic coil 57 electrical connection between the feed terminal 24 and the load terminal 26 is closed.
- a short circuit in a circuit connected to the terminals 24 and 16 leads to a sudden increase of the current flowing through the magnetic coil 57 current to a peak, in the case of the illustrated circuit breaker as intended can be up to about 6 kA.
- the strong increase in current causes a proportional increase in the magnetic field generated by the magnetic coil 57, as a result of which the armature 60 is attracted against the force caused by the compression spring 62 restoring force against the arranged inside the magnetic coil 57 core disks 58.
- Each of the core disks 58 is provided with a longitudinal groove.
- the Kemulationn 58 are attached to each other in such a way that the longitudinal grooves complement each other to a implementation in which the plunger 61 slidably rests.
- the plunger 61 is connected to the armature 60 and is advanced during its movement against the trigger slide 53. He strikes against a stop surface 92 of the trip slider 53 and raises the release slide 53 from the in Fig. 9 shown standby position.
- the release slide 53 has a Entklinkungskontur 93.
- the Entklinkungskontur 93 is provided with a recess 94 into which the coupling rod 45 engages with the driver 46 so that the driver 46 is withdrawn from the pawl 51 of the blade lever 49 by the advance of the trigger slide 53.
- the trigger slide 53 is further provided with a projection which serves as a stop 95 for acting on the switching arm 43.
- This (first) stop 95 simultaneously or immediately after the unlatching of the switching arm 43 abuts against it and accelerates the switching arm 43 in the direction of its open position.
- the geometry of the trigger slide 53 is particularly dimensioned such that the stop 95 comes to rest on the switching arm 43 at a time when the switching arm 43 has not yet relaxed.
- the switching arm 43 is in turn designed such that the stop 95 abuts against the contact lever 48 (and not against the latch lever 49). Due to the friction of the contact lever 48 with the stop 95, the rotational mobility of the contact lever 48 is blocked. In this way it is prevented that the switching arm 43 relaxes before lifting the moving contact 84 of the fixed contact 85. Rather, the contact lever 48 is raised immediately with the abutment of the trigger slide 53 (s. Fig. 11 ), which in turn causes the moving contact 84 immediately separated from the fixed contact 85 and the short-circuit current is effectively limited already in
- the trigger slide 53 is arranged in particular such that the stop 95 in the region of the rotary joint 81 strikes the switching arm 43, so that no torque is transmitted relative to the latch lever 49 by the stop 95 on the contact lever 48.
- the contact lever 48 projects beyond the latch lever 49 in the radial direction in the region of the rotary joint 81, so that it is ensured that the stop 95 strikes the contact lever 48.
- Fig. 13 shows the final state of the tripping operation, in which the moving contact 48 abuts against a stop surface 97 which forms a fixed contact 85 at a distance opposite approach of the second running rail 66.
- the release slide 53 is lifted by the interaction of the second stop 96 with the switching arm 43 in a release position in which the Entklinkungskontur 93 of the trigger slide 53 flanking the pawl 51 of the switching arm 43 with a Aufgleitschräge 98.
- the driver 46 is unlatched with the pawl 51, and the pivot lever 7 is no longer held in the second pivot position and returns under the action of the torsion spring 47 in the first pivot position.
- the driver 46 is pushed out of the recess 94 of the Entklinkungskontur 93 and slides the Aufgleitschräge 98 down until it locks behind the latch 51 again.
- the engagement of the driver 46 behind the pawl 51 is by a spring tab 72 ( Fig. 8 ), which is molded integrally on the pivot lever 7 and pushes the coupling rod 45 in the second pivot position of the pivot lever 7 against the Aufgleitschräge 98.
- the switching arm 43 is thereby again coupled to the manual operation mechanism 42 and can by manual pivoting of the pivot lever 7 in the closed position according to Fig. 9 be reset.
- the driver 46 by interaction of the driver 46 with the Aufgleitschräge 98 simultaneously the trip slider 53 in the ready position according to Fig. 9 shifted back, provided that the displacement of the trigger slide 53 is no obstacle.
- the driver 46 slides on the Aufgleitschräge 98 upwards and is in turn lifted by the pawl 51.
- 10 to 13 is recognizable - cut from the power supply 67 such that the running rail 66 is guided along in the region of the stop surface 97 on the contact lever 48 abutting in its open position, and - viewed from the moving contact 84 along the contact lever 48 - only behind the moving contact 84 in the power supply 67 goes over.
- the guided from the fixed contact 85 via the arc gap to the moving contact 84 thus current, even if the contact lever 48 is already applied to the stop surface 97, as before the abutment of the contact lever 48 within the contact lever 48 or the running rail 66 a certain distance in the direction of the Rear lever end 83 flow until it is discharged via the power supply 67 in the opposite direction.
- the running rail 66 is cut out centrally from the power supply 67 in order to ensure a symmetrical current flow in the transition region.
- the magnetic yoke 59 into which the running rail 65 is integrated, is not closed in a circle around the magnetic coil 57. Rather, the yoke 59 is on a magnet armature 60 facing the bottom through a narrow air gap 99 (FIGS. FIGS. 8 and 9 ) interrupted.
- the air gap 99 is dimensioned such that it does not significantly affect the magnetic flux within the magnetic yoke 59, but effectively prevents current flow over the gap gap. It is rather within the magnetic yoke 59 always from an output 100 ( Fig. 8 In the context of this description, the direction of the current path is specified independently of the actual current flow direction as starting from the feed connection 24 or coupling contact 29 and aligned with the load connection 26 ).
- the arc enters the quenching chamber 63 and is divided by the quenching plates 64 into a number of partial arcs.
- the quenching plates 64 favor the extinguishing of the arc in a conventional manner by multiplying the total voltage across the entire arc gap and the arc is cooled.
- the extinguishing device 41 is provided with an air compensation system whose function in Fig. 14 is illustrated schematically.
- Fig. 14 shows the extinguishing device 41 in a schematic section through the quenching chamber 63 and the arc run space 101 along a cutting line which coincides approximately with the running rail 66.
- the arc run space 101 is closed toward both end faces by the cover plates 68a and 68b.
- Each cover plate 68a, 68b is in turn arranged at a distance from the adjacent wall of the housing 3, so that between the cover plates 68a, 68b and the housing 3 on both sides of the arc run space 101 and parallel to this ever a pressure equalization channel 103a and 103b is formed.
- Each pressure equalization channel 103a, 103b corresponds via a first opening 104 to an area of the arc run area 101 adjacent to the inlet 102 and to a second opening 105, which is embedded in the respective cover plate 68a, 68b and having one Contacts 84,85 surrounding area of the arc run space 101.
- P pressure wave occurs in the pressure equalization channels 103 a, 103 b to a backflow R, reduced by the overpressure at the inlet of the quenching chamber 63 and the emergence of a Negative pressure in the region of the contacts 84 and 85 is avoided.
- the quenching chamber 63 has an outlet 106 (FIG. Fig. 14 ) on.
- the damming of this outlet 106 ie the ratio of the free cross-sectional area of the outlet 106 to the free cross-sectional area of the inlet 102, is about 42%.
- This cross-sectional constriction has proven to be particularly suitable for slowing down the propagation of the arc in the quenching chamber 63, in order to avoid that the arc simply passes through the quenching chamber 63 and reignites at the outlet 106, in order to keep the quenching chamber sufficiently permeable on the other hand that the arc quickly enters the quenching chamber 63.
- the damming is effected essentially by a separating web 107 made of insulating material, which is integrally formed on the outlet 106 of the extinguishing chamber 63 and protrudes therefrom in the propagation direction P.
- This separating web 107 furthermore effects separation of the gas stream leaving the quenching chamber 63 into two partial streams and thus further impedes flashback of the electric arc.
- the guide plates 69 further direct the partial flows T1 to T8 in the direction of the side surface 22b (ie in the illustration according to FIG Fig. 14 approximately to the viewer) and thus avoid a pressure accumulation at the outlet 106 of the quenching chamber 63, which would favor the flashback of the arc.
- the trip takes place in principle the same way as in the short circuit case described above.
- the trip slider 53 does not become the ram 61 of the short-circuit release 56 but the bimetallic strip 54 of the overload release 55, which heats up due to the overload current and thereby deflects such that its free end 110 (FIG. Fig. 15 ) abuts against a projection of the trigger slide 53, which is referred to as attack 111 below.
- the attack 111 is formed in two parts and includes an integrally formed on the trigger slide 53 bracket 112 (FIGS. Fig. 15 ) on which an eccentric 113 ( Fig. 16 ) is rotatably mounted.
- the holder 112 is in this case with a ring gear 114 ( Fig. 15 ) which, in cooperation with a corresponding detent tooth 115 (FIG. Fig. 16 ) of the eccentric 113 allows the eccentric 113 to lock in a plurality of defined rotational positions relative to the holder 112.
- the trigger slide 53 further comprises a cantilever 116 (FIG. Fig. 9 ).
- the boom 116 is configured to actuate the signal relay 71 when the trip slider 53 is in the standby position. As if in synopsis of FIGS. 10 to 13 can be removed, the boom 116 releases the signal relay 71 in its movement into the release position. On the switching state of the signal relay 71 can thus be queried the position of the trip slider 53, and consequently the state of the trigger mechanism 44.
- the Figures 17 and 18 show two circuit breaker modules 2 of the type described above, which are assembled into a two-pole design of the circuit breaker front 1.
- the coupling piece 120 comprises a body 121 which is provided with two fixing projections 122 each.
- the fixing projections 122 are in corresponding receptacles 17 on the adjacent end faces 14a and 14b of the respective adjacent Circuit breaker module 2 snap-in, so that over the coupling piece 120 and the juxtaposed circuit breaker modules 2 are mechanically fixed together.
- a handle coupling 123 and on the other hand, a release coupling 124 is formed on this body 121 on the one hand.
- the handle coupling 123 is molded on a film hinge 125 pivotally mounted on the body 121 and engages in a Fig. 18 illustrated mounting state on both sides in the handles 6 of the adjacent circuit breaker modules 2, so that the pivot lever 7 of this circuit breaker modules 2 are coupled together in always aligned pivoting position.
- the triggering coupling 124 is flexibly molded onto the body 121 via a spring arm 126 bent in a meandering manner and, in the assembled state, engages on both sides through the engagement opening 18 of the respectively adjacent housing wall on a coupling projection 127 (FIG. FIGS. 8 to 10 ) of the trip slider 53 of the respective circuit breaker module 2 to.
- the trip slider 53 of both circuit breaker modules 2 are coupled such that by triggering a circuit breaker module 2, the respective other circuit breaker module 2 is triggered.
- both a mechanical fixation of the circuit breaker modules 2 and a dynamic coupling of both the manual actuation mechanism 42 and the actuation mechanism 44 of both circuit breaker modules 2 are thus achieved by means of an integral component
- circuit breaker modules 2 are additionally connected to each other by brackets 128 on the side surfaces 22a, 22b and the back 8.
- the respective outer end faces 14a, 14b of the circuit breaker modules 2 are each covered by a blind cover 15a (or 15b). Further front covers 129 close off the area of the front side 4 between the circuit breaker modules 2 arranged around the pivot lever 7.
- FIGS. 19 to 21 show a five-pole design of the circuit breaker 1, in which this is connected in the manner of a power distributor. With a power distributor is common a common power supply is provided, branched off from the branch lines to supply a number of poles corresponding number of load circuits via a respective separate circuit breaker module 2.
- a dynamic coupling of the individual circuit breaker modules 2 is not desirable in a power distribution in the rule.
- the circuit breaker modules 2 are according to Fig. 19 Therefore (in contrast to the embodiment of the circuit breaker 1 described above) without interposed coupling pieces 120 juxtaposed.
- a busbar 130 which extends as a profile part substantially over the entire width of the juxtaposed circuit breaker modules 2, inserted into the aligned housing slots 30 so that the coupling contacts 29 of the circuit breaker modules 2 are short-circuited via the busbar 130.
- the connection of the circuit breaker modules 2 to an external supply line is carried out as intended via the feed terminal 24 of a circuit breaker module. 2
- the bus bar 130 is provided with a back cover 131 of insulating material. In the inserted state, only this back cover 131 protrudes on the side surface 22a and closes the housing slot 30 to this side surface 22a touch-safe ( Figures 20 . 21 ). To the outer end faces 14a, 14b of the circuit breaker modules 2, the busbar 130 is covered by end strip 132
- Each end strip 132 is provided with a peripheral circumferential guide groove 133. With this guide groove 133 of the end strip 132 is pushed onto a guide web 134 which rotates the edge of the housing slot 30 at each end face 14a, 14b.
- a guide web 134 which rotates the edge of the housing slot 30 at each end face 14a, 14b.
- an end strip 132 is preferably molded over a predetermined breaking point on the back 8 of the housing 3 of each circuit breaker module 2, so that it can be broken off if necessary and inserted into the housing slot 30.
- busbar pieces 135a and 135b are shown, which in the same way as the busbar 130 in the housing slots 32a or 32b are insertable to couple the coupling contacts 31 a, 31 b of the signal terminals 28a, 28b.
- the FIGS. 19 to 21 show a first type of busbar pieces 135a, each of which short-circuits only the coupling contacts 31a or 31b of two directly adjacent circuit breaker modules 2.
- One in the Figures 19 and 21 shown further type of busbar pieces 135b is formed from profile material and can be cut to length (as with the busbar 130) as desired to short any number of coupling contacts 31a or 31b.
- busbar pieces 135a and 135b can be used alternatively or in any combination to interconnect the signal circuits of the circuit breaker modules 2 together.
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
Description
Die Erfindung bezieht sich auf einen Schutzschalter nach dem Oberbegriff des Anspruchs 1. Ein solcher Schutzschalter Ist aus
Ein weiterer Schutzschalter ist beispielsweise aus
Ein Schutzschalter der oben genannten Art soll generell bei Eintritt der Auslösebedingung eine möglichst rasche Trennung der zwischen dem Bewegkontakt und dem Festkontakt gebildeten elektrischen Verbindung herbelführen, um einen dem Schutzschalter nachgeschalteten Stromkreis effektiv gegen einen Kurzschluss und/oder Überlastschaden abzusichern. Dabei soll Insbesondere ein Schaltlichtbogen, wie er bei dem Schaltvorgang zwischen dem Bewegkontakt und dem Festkontakt unweigerlich entsteht; möglichst rasch gelöscht werden, um den Stromfluss zum Erliegen zu bringen und ein Abbrennen des Kontaktmaterials nach Möglichkeit zu vermeiden. Die rasche Löschung des Schaltilchtbogens ist insbesondere im Kurzschluss- und Überlastfall von besonderer Wichtigkeit, zumal in diesen Fällen der Schaltlichtbogen infolge des hohen Stromflusses eine besonders starke zerstörerische Wirkung entfaltet. Ein Schutzschalter soll dabei gleichzeitig aber aus herstellungstechnischen Gründen möglichst einfach aufgebaut und preisgünstig herstellbar sein.A circuit breaker of the abovementioned type is generally intended to induce the most rapid possible separation of the electrical connection formed between the moving contact and the fixed contact when the tripping condition occurs in order to effectively protect a circuit connected downstream of the circuit breaker against a short circuit and / or overload damage. In particular, a switching arc, as inevitably arises in the switching operation between the moving contact and the fixed contact; be deleted as quickly as possible to bring the current flow to a standstill and avoid burning off the contact material as far as possible. The rapid deletion of the Schaltilchtbogens is particularly important in short circuit and overload of particular importance, especially in these cases, the switching arc develops a particularly strong destructive effect due to the high current flow. A circuit breaker should be as simple as possible and inexpensive to manufacture but at the same time for manufacturing reasons.
Schutzschalter der oben genannten Art werden sowohl In einpoligen als auch mehrpoligen Ausführungen hergestellt. Im Sinne einer kostensparenden Herstellung ist es dabei üblich, mehrpolige Schutzschalter modular aus jeweils einpoligen Schutzschaltermodulen zu realisieren, wobei die Schutzschaltermodule zur Realisierung eines mehrpoligen Schutzschalters stirnseitig aneinandergereiht werden. Ein derartiger modularer Schutzschalter ist beispielsweise aus
Der Erfindung liegt die Aufgabe zugrunde, einen vor dem vorstehend beschriebenen Hintergrund, insbesondere im Hinblick auf eine rationelle Herstellbarkeit, besonders geeigneten Schutzschalter anzugeben.The object of the invention is to provide a circuit breaker which is particularly suitable against the background described above, in particular with regard to rational manufacturability.
Diese Aufgabe wird erfindungsgemäß gelöst durch die Merkmale des Anspruchs 1. Vorteilhafte Weiterbildungen finden sich in den Unteransprüchen Zur Erreichung eines hohen Vorfertigungsgrades für Schutzschalter unterschiedlicher Polzahl sind danach mehrere Exemplare des vorstehend beschriebenen einpoligen Schutzschaltermoduls zu einer mehrpoligen Schutzschalteranordnung kombinierbar, indem diese Schutzschaltermodule jeweils stirnseitig aneinandergesetzt werden. Der Schutzschalter ist dabei in zweckmäßiger Ausführung derart ausgebildet, dass die aneinandergereihten Schutzschaltermodule zum einen eine mechanisch zusammenhängende Einheit bilden, wobei gleichzeitig die Handbetätigungsmechanik aller Schutzschaltermodule gekoppelt ist, so dass die Schutzschaltermodule nur gemeinsam schaltbar sind. Gleichzeitig ist vorgesehen, dass die Auslösemechanik aller Schutzschaltermodule gekoppelt ist, so dass durch Auslösung eines jeden der Schutzschaltermodule auch alle anderen Schutzschaltermodule ausgelöst werden.This object is achieved by the features of
Erfindungsgemäß ist hierzu ein Koppelstück vorgesehen, das sowohl der mechanischen Fixierung der Schutzschaltermodule aneinander dient, als auch eine Kopplung der Handbetätigungsmechanik und der Auslösemechanik der angrenzenden Schutzschaltermodule bewirkt. Dieses Koppelstück ist in besonders einfacher Ausführung einstückig, insbesondere als preisgünstiges Kunststoffspritzteil, ausgebildet.According to the invention a coupling piece is provided for this purpose, which serves both the mechanical fixation of the circuit breaker modules together, as well as a coupling of the manual actuation mechanism and the trigger mechanism of the adjacent circuit breaker modules causes. This coupling piece is in one piece in a particularly simple embodiment, in particular as a low-priced plastic injection molded part formed.
Um die außen liegenden Stirnseiten eines einpoligen oder mehrpoligen Schutzschalters zumindest teilweise abzudecken, ist weiterhin optional ein Blinddeckel vorgesehen, der nach Art eines Baukastensystems modular anstelle des Kopplungsstücks auf diese außen liegende Gehäusestirnseite aufsetzbar Ist.In order to cover the outer ends of a single-pole or multi-pole circuit breaker at least partially, a blind cover is also optionally provided, the in the manner of a modular system modular instead of the coupling piece on this outer housing front side is placed.
Zum Anschluss eines elektrischen Leiters weist das oder jedes Schutzschaltermodul einen Einspeisungsanschluss auf, der im Modulinneren mit dem Festkontakt elektrisch verbunden ist. Der Einspelsungsanschluss eines jeden Schutzschaltermoduls weist dabei vorzugsweise einen Koppelkontakt auf, mittels welchem mehrere aneinandergereihte Schutzschattermodule einer mehrpoligen Schutzschalteranordnung mittels einer Stromschiene parallel geschaltet werden können. Auf diese Weise entfällt das Erfordernis, jedes Schutzschaltermodul eingangsseitig separat verdrahten zu müssen. Vielmehr werden alle Schutzschaltermodule nach Art eines Stromverteilers über eine gemeinsame Stromzuleitung versorgtTo connect an electrical conductor, the or each circuit breaker module to a feed terminal, which is electrically connected in the module interior with the fixed contact. The Einspelsungsanschluss of each circuit breaker module preferably has a coupling contact, by means of which a plurality of juxtaposed Schutzschattermodule a multi-pole circuit breaker arrangement can be connected in parallel by means of a busbar. In this way, eliminates the need to wire each circuit breaker module input side separately. Rather, all circuit breaker modules are supplied in the manner of a power distributor via a common power supply line
In einer weiteren vorteilhaften Ausgestaltung des Schutzschalters weist jedes Schutzschaltermodul des Weiteren zwei Signalanschlüsse zum Anschluss von Leitern auf, die modulintern mit einem Signalrelais elektrisch verbunden sind. Auch diesen Signalanschlüssen ist zweckmäßigerweise jeweils ein Koppelkontakt parallel geschaltet, über den die Signalanschlüsse verschiedener Schutzschaltermodule elektrisch verschaltbar sind.In a further advantageous embodiment of the circuit breaker, each circuit breaker module further comprises two signal terminals for connecting conductors that are electrically connected to a signal relay module inside. Also these signal connections is expediently connected in each case a coupling contact in parallel, via which the signal terminals of various circuit breaker modules are electrically connected.
Der oder jeder Koppelkontakt ist dabei in einem Gehäuseschlitz angeordnet, der die gesamte Gehäusebreite überspannt, so dass zur Überbrückung der Koppelkontakte aneinandergrenzender Schutzschaltermodule eine als Profilbauteil ausgebildete Stromschiene in die Gehäuseschlitze einschiebbar ist. Zur Verbesserung der Betriebssicherheit des Schutzschalters ist dabei der oder jeder Gehäuseschlitz hinsichtlich seiner Dimensionierung, d.h. seiner Öffnungsseite und -tiefe derart dimensioniert, dass der Koppelkontakt fingersicher in dem Gehäuse aufgenommen ist.The or each coupling contact is arranged in a housing slot, which spans the entire housing width, so that for bridging the coupling contacts of adjacent circuit breaker modules designed as a profile component busbar in the housing slots can be inserted. To improve the reliability of the circuit breaker is the or each housing slot in terms of its dimensioning, i. its opening side and depth dimensioned such that the coupling contact is finger-safe received in the housing.
Um an einer außen liegenden Stirnseite eines Schutzschaltermoduls einen versehentlichen Kontakt mit dem Ende einer solchen Stromschiene auszuschließen, umfasst der Schutzschalter vorzugsweise weiterhin einen Abschlussstreifen aus Isoliermaterial, der fluchtend mit jeder Gehäusestimseite in den Gehäuseschlitz einschiebbar ist und in eingeschobenem Zustand den Gehäuseschlitz zu dieser Stirnseite hin abschließt.In order to preclude an accidental contact with the end of such a bus bar on an outer end face of a circuit breaker module, the circuit breaker preferably further comprises a terminating strip of insulating material which is flush with each Gehäusestimseite inserted into the housing slot and closes the housing slot to this end face in the inserted state ,
In einer bevorzugten Weiterbildung dieser Ausführung weist der oder jeder Gehäuseschlitz an jeder Gehäusestimseite einen Führungssteg auf, der bevorzugt zumindest einen Teil des stirnseitigen Randes des Gehäuseschlitzes umläuft, zumindest aber von beiden Schlitzwänden in den von dem Gehäuseschlitz ausgesparten Raum hineinragt. Dieser Führungssteg dient zum einen dazu, durch formschlüssigen Eingriff in eine korrespondierende Führungsnut des Abschlussstreifens diesen in eingeschobenem Zustand an dem Gehäuse zu fixieren. Eine vorteilhafte Nebenfunktion erfüllt der Führungssteg dann, wenn kein Abschlussstreifen in den Gehäuseschlitz eingeschoben ist, indem durch den Führungssteg die Schlitzbreite an dem stirnseitigen Gehäuserand reduziert und dadurch die Gefahr einer versehentlichen Berührung des in dem Gehäuseschlitz aufgenommenen Koppelkontakts weiter reduziert ist.In a preferred development of this embodiment, the or each housing slot on each end face of the housing has a guide web, which preferably surrounds at least part of the end edge of the housing slot, but projects at least from both slot walls into the space recessed by the housing slot. This guide web serves, on the one hand, to fix it in the inserted state on the housing by positive engagement in a corresponding guide groove of the end strip. An advantageous secondary function fulfilled the guide bar when no end strip is inserted into the housing slot by reduced by the guide bar, the slot width at the front edge housing edge and thereby the risk of accidental contact of the recorded in the housing slot coupling contact is further reduced.
Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand einer Zeichnung näher erläutert. Darin zeigen:
- Fig. 1
- in einer perspektivischen Explosionsdarstellung einen einpoligen Schutzschalter mit einem Schützschaltermodul und austauschbaren Blinddeckeln zur teilweisen Abdeckung der Stirnseiten des Schutzschaltermoduls,
- Fig. 2
- in perspektivischer Ansicht den Schutzschalter gemäß
Fig. 1 mit einer ersten Art von Blinddeckeln, - Fig. 3
- in Darstellung gemäß
Fig. 2 den Schutzschalter mit einer zweiten Art von Blinddeckeln, - Fig. 4 bis 6
- den Schutzschalter gemäß
Fig. 2 in unterschiedlichen Seitenansichten, - Fig. 7
- in einer perspektivischen Explosionsdarstellung ein Gehäuse sowie die in dem Gehäuse gehalterten Funktionsteile des Schutzschalters gemäß
Fig. 2 , - Fig. 8
- in einer perspektivischen Ansicht die in
Fig. 7 gezeigten Funktionsteile des Schutzschalters gemäßFig. 2 in zusammengebautem Zustand, - Fig. 9
- in gegenüber
Fig. 8 um etwa 180° gedrehter perspektivischer Ansicht die Funktionsteile des Schutzschalters gemäßFig. 2 in zusammengebautem Zustand, - Fig. 10 bis 13
- in vergrößerter (und teils leicht gedrehter) Detailansicht aus
Fig. 9 ein Schaltspiel des Schutzschalters gemäßFig. 2 beim Auslösevorgang in sukzessive aufeinanderfolgenden Momentaufnahmen, - Fig. 14
- in einem schematisch vereinfachten Längsschnitt eine Löscheinrichtung des Schutzschalters gemäß
Fig. 2 , - Fig. 15 und 16
- in perspektivischer Darstellung (die im Wesentlichen einer Detailansicht aus
Fig. 8 entspricht) eine Justageeinrichtung zur Einstellung der Ansprechschwelle eines bimetallischen Überlastauslösers des Schutzschalters gemäßFig. 2 , - Fig. 17
- in einer perspektivischen Explosionsdarstellung eine zweipolige Ausführung des Schutzschalters mit zwei Schutzschaltermodulen gemäß
Fig. 2 , - Fig. 18
- in perspektivischer Darstellung den Schutzschalter gemäß
Fig. 17 in zusammengebautem Zustand, und - Fig. 19 bis 21
- eine fünfpolige Ausführungsform des Schutzschalters, bei der fünf Schutzschaltermodule nach Art eines Stromverteilers miteinander verschaltet sind.
- Fig. 1
- in a perspective exploded view of a single-pole circuit breaker with a contactor switch module and interchangeable blind covers for partially covering the front sides of the circuit breaker module,
- Fig. 2
- in perspective view the circuit breaker according to
Fig. 1 with a first kind of blind covers, - Fig. 3
- in illustration according to
Fig. 2 the circuit breaker with a second type of blind covers, - 4 to 6
- the circuit breaker according to
Fig. 2 in different side views, - Fig. 7
- in a perspective exploded view of a housing and the content Erten in the housing functional parts of the circuit breaker according to
Fig. 2 . - Fig. 8
- in a perspective view the in
Fig. 7 shown functional parts of the circuit breaker according toFig. 2 in assembled condition, - Fig. 9
- in opposite
Fig. 8 rotated by about 180 ° perspective view of the functional parts of the circuit breaker according toFig. 2 in assembled condition, - Fig. 10 to 13
- in enlarged (and partly slightly rotated) detail view
Fig. 9 a switching operation of the circuit breaker according toFig. 2 during the triggering process in successive successive snapshots, - Fig. 14
- in a schematically simplified longitudinal section of a quenching device of the circuit breaker according to
Fig. 2 . - FIGS. 15 and 16
- in a perspective view (which is essentially a detail view
Fig. 8 corresponds) an adjustment device for adjusting the threshold of a bimetallic overload release of the circuit breaker according toFig. 2 . - Fig. 17
- in a perspective exploded view of a two-pole version of the circuit breaker with two circuit breaker modules according to
Fig. 2 . - Fig. 18
- in perspective view of the circuit breaker according to
Fig. 17 in assembled condition, and - Fig. 19 to 21
- a five-pole embodiment of the circuit breaker, in which five circuit breaker modules are interconnected in the manner of a power distributor with each other.
Einander entsprechende Teile und Größen sind in allen Figuren stets mit den gleichen Bezugszeichen versehen.Corresponding parts and sizes are always provided with the same reference numerals in all figures.
Das in den nachfolgenden Figuren beschriebene Ausführungsbeispiel der Erfindung betrifft einen nach Art eines Baukastensystems modular aufgebauten Schutzschalter 1, der durch Kombination einer Anzahl von Komponenten in ein- oder mehrpoliger Bauweise realisierbar ist. Die Kernkomponente dieses Baukastensystems ist ein Schutzschaltermodul 2, das für sich gesehen bereits einen vollständig funktionsfähigen einpoligen Schutzschalter bildet.The embodiment of the invention described in the following figures relates to a kind of modular system
Einpolige Bauformen des Schutzschalters 1, wie sie insbesondere in den
Gemäß
Der Rastschieber 10 ist mit seitlich angespritzten Federarmen 12 versehen, die mit einer - vereinfacht - sägezahnartigen Kontur der Führung 11 derart zusammenwirken, dass der Rastschieber 10 im Montagezustand in der Führung unverlierbar fixiert und bistabil zwischen einer Raststellung, in der eine Rastnase 13 des Rastschiebers 10 in die Aufnahme 9 ragt, und einer Freigabestellung, in der die Rastnase 13 aus der Aufnahme 9 zurückgezogen ist, verschiebbar ist. In Folge der bistabilen Führung verbleibt der Rastschieber 10 in der Freigabestellung, wenn er von einem Benutzer insbesondere zur Demontage des Schutzschaltermoduls 2 manuell aus der Rastposition zurückgezogen wird, so dass das Schutzschaltermodul 2 einfach von der Tragschiene abgehoben werden kann. Die bistabile Verrastung des Rastschiebers 10 in der Freigabestellung ist dabei insbesondere vorteilhaft, um mehrere zusammenhängende oder miteinander verdrahtete Schutzschaltermodule 2 gemeinsam von einer Tragschiene abnehmen zu können, ohne die Rastschieber 10 jedes Schutzschaltermoduls 2 gleichzeitig betätigen zu müssen. Andererseits ist der Rastschieber 10 in der Rastposition durch Zusammenwirkung der Federarme 12 mit der sägezahnartigen Kontur der Führung 11 federnd geführt, so dass das Schutzschaltermodul 2 durch einfaches Aufstecken auf die Tragschiene auf diese aufgeschnappt werden kann.The locking
In der einpoligen Ausführung des Schutzschalters 1 ist auf jede Stimfläche 14a, 14b des Gehäuses 3 ein Blinddeckel 15a oder 15b aufgeschnappt, der das Gehäuse 3 im Bereich des Schwenkhebels 7 nach außen hin abschließt. Jeder Blinddeckel 15a, 15b ist mit drei Haltevorsprüngen 16 in korrespondierende Aufnahmen 17 des Gehäuses 3 eingeschnappt. Wie aus den
Wie
Die
In der Seitenfläche 22a ist eine Gehäuseöffnung 23 vorgesehen, über welche ein Einspeisungsanschluss 24 zum Anschließen eines elektrischen Versorgungsleiters zugänglich ist. Die gegenüberliegende Seitenfläche 22b ist mit einer weiteren Gehäuseöffnung 25 versehen, über welche ein Lastanschluss 26 zugänglich ist. Jede Seitenfläche 22a, 22b ist zusätzlich mit je einer Gehäuseöffnung 27a bzw. 27b versehen, über die ein jeweils korrespondierender Signalanschluss 28a bzw. 28b zugänglich ist. Dem Einspeisungsanschluss 24 ist ein Koppelkontakt 29 parallel geschaltet. Der Koppelkontakt 29 ist über einen Gehäuseschlitz 30 von außen her zugänglich gemacht. Der Gehäuseschlitz 30 erstreckt sich über die gesamte Gehäusebreite, d.h. von der Stimfläche 14a bis zu einer gegenüberliegenden Stirnfläche 14b und ist zu beiden Stimflächen 14a und 14b hin offen. Ebenso ist jedem Signalanschluss 28a und 28b ein weiterer Koppelanschluss 31 a bzw. 31 b parallel geschaltet, wobei jeder der Koppelanschlüsse 31 a und 31 b über einen weiteren Gehäuseschlitz 32a bzw. 32b zugänglich ist.In the
Jeder Gehäuseschlitz 30,32a,32b ist derart dimensioniert, dass der jeweils darin angeordnete Koppelkontakt 29 bzw. 31 a,31 b fingersicher verborgen ist und dass die erforderlichen Kriechstrecken zu der Gehäuseoberfläche eingehalten sind. Dies wird dadurch erreicht, dass die Gehäuseschlitze besonders eng und tief ausgebildet sind. Die Schlitztiefe beträgt im Fall des Gehäuseschlitzes 30 etwa 20 mm, im Falle der Gehäuseschlitze 32a,32b etwa 10 mm. Die freie Schlitzweite beträgt im Fall des Gehäuseschlitzes 30 etwa 4 mm und ist im hinteren Bereich durch Führungsstege 134, die den Koppelkontakt 29 beidseitig flankieren, nach außen hin auf etwa 1 mm reduziert. Im Falle der Gehäuseschlitze 32a,32b beträgt die freie Schlitzweite etwa 3 mm und ist im hinteren Bereich nach außen hin auf etwa 1 mm reduziert.Each
In
Die Funktionsteile des Schutzschaltermoduls 2 gliedern sich im Wesentlichen in ein Schaltschloss 40 und eine Löscheinrichtung 41. Das Schaltschloss 40 lässt sich wiederum gliedern in drei funktionale Untergruppen, nämlich eine Handbetätigungsmechanik 42, einen Schaltarm 43 sowie eine Auslösemechanik 44.The functional parts of the
Die Handbetätigungsmechanik 42 ist im Wesentlichen gebildet durch den Schwenkhebel 7 sowie eine Koppelstange 45, deren Freiende zur Bildung eines Mitnehmers 46 etwa rechtwinklig abgebogen ist. Die Handbetätigungsmechanik 42 umfasst ferner eine Torsionsfeder 47.The
Der Schaltarm 43 ist zweigliedrig ausgebildet und umfasst einen Kontakthebel 48 und einen Klinkenhebel 49, der an einem rückwärtigen Hebelende 50 eine mit dem Mitnehmer 46 zusammenwirkende Klinke 51 aufweist. Der Schaltarm 43 wird durch eine Zugfeder 52 vorgespannt.The switching
Die Auslösemechanik 44 umfasst einen Auslöseschieber 53, einen im Wesentlichen aus einem Bimetallstreifen 54 gebildeten Überlastauslöser 55 sowie einen elektromagnetischen Kurzschlussauslöser 56, der eine Magnetspule 57 mit einem aus zwei Kemscheiben 58 gebildeten Magnetkern, ein Magnetjoch 49 und einen Magnetanker 60 umfasst. Der Magnetanker 60 ist dabei mit einem stabförmigen Stößel 61 aus Kunststoff verbunden und wird durch eine Druckfeder 62 vorgespannt.The triggering
Die Löscheinrichtung 41 umfasst eine Löschkammer 63 mit einem darin eingesetzten Paket von zueinander parallel angeordneten Löschblechen 64 sowie eine erste Laufschiene 65 und zweite Laufschiene 66. Die Laufschiene 65 ist dabei integral mit dem Magnetjoch 59 ausgebildet. Die Laufschiene 66 ist zusammen mit einer Stromzuführung 67 als einstückig zusammenhängendes Blechteil gebildet, wobei die Stromzuführung 67 gleichzeitig einen Träger für den Bimetallstreifen 54 bildet. Die Löscheinrichtung 41 umfasst des Weiteren zwei Abdeckplatten 68a und 68b sowie Leitbleche 69, die einstückig an die Innenwand des Gehäuses 3 angeformt sind.The extinguishing
In
Das Schutzschaltermodul 2 umfasst ferner eine Signalkontakteinrichtung, die im Wesentlichen durch ein mit den Signalanschlüssen 28a und 28b und den jeweils parallel geschalteten Koppelkontakten 31 a und 31 b verschaltetes Signalrelais 71 gebildet ist.The
Aus
In den
Im Montagezustand ist der Klinkenhebel 49 des Schaltarms 43 um eine gehäusefeste Drehachse 80 schwenkbar gelagert. Der Kontakthebel 48 ist wiederum an einem Drehgelenk 81 an dem Klinkenhebel 49 angelenkt, so dass der Schaltarm 43 in sich eine gewisse Flexibilität aufweist. Die Relativbeweglichkeit des Kontakthebels 48 bezüglich des Klinkenhebels 49 wird begrenzt durch ein Langloch 82 an einem rückwärtigen Ende 83 des Kontakthebels 84, durch das die Drehachse 80 hindurchsteht.In the assembled state, the
Das dem rückwärtigen Ende 83 entgegengesetzte Freiende des Kontakthebels 48 bildet einen Bewegkontakt 84, der mit einem Festkontakt 85 zusammenwirkt, um einen Stromkreis zu schalten. Der Festkontakt 85 ist an einer Oberseite des Magnetjochs 59 am Ansatz der mit diesem integral verbundenen Laufschiene 65 aufgebracht.The
Die
Die (in
Die Stellung des Klinkenarms 49 in dieser Schließstellung ist dabei derart gewählt, dass der Schaltarm 43 beim Schließen in gewissen Umfang "durchgedrückt" wird, dass also der Kontakthebel 48 gegenüber dem Klinkenhebel 49 verspannt wird. Durch diese Verspannung wird erreicht, dass der Bewegkontakt 84 in der Schließstellung stets unter Vorspannung an dem Festkontakt 85 anliegt, wobei ein sukzessiv zunehmender Verbrauch an Kontaktmaterial im Zuge der Lebenszeit des Schutzschaltermoduls 2 durch die Nachgiebigkeit des Kontakthebels 48 ausgeglichen wird.The position of the
Der Schwenkhebel 7 ist an der Gehäuseschale 73 zwischen einer in
Der Schwenkhebel 7 ist durch die Torsionsfeder 47 in Richtung auf die erste Schwenkstellung vorgespannt, so dass er in der zweiten Schwenkstellung entgegen dem Federdruck der Torsionsfeder 47 ausgelenkt ist. Die Kulissenführung 91 ist dabei derart angelegt, dass in der zweiten Schwenkstellung die über die Koppelstange 45 vermittelte Wirkverbindung zwischen dem Mitnehmer 46 und dem Festende 89 oberhalb (d.h. auf der dem Handgriff 6 zugekehrten Seite) der Schwenkachse 88 verläuft, so dass der Schwenkhebel 7 durch die Verrastung des Mitnehmers 46 mit der Klinke 51 des Rastarms 43 gegen die Rückstellkraft der Torsionsfeder 47 in der zweiten Schwenkstellung gehalten wird. Die Handbetätigungsmechanik 42 und der Schaltarm 43 sind somit über die Verklinkung des Mitnehmers 46 mit der Klinke 51 derart miteinander gekoppelt, dass sie sich gegen die jeweilige Rückstellkraft der Zugfeder 52 und der Torsionsfeder 47 gegenseitig in der Schließstellung bzw. der zweiten Schwenkstellung stabilisieren.The
Kembestandteil der Auslösemechanik 42 ist der Auslöseschieber 53, der sowohl von dem Bitmetallstreifen 54 des Überlastauslösers 55 als auch von dem Stößel 61 des Kurzschlussauslösers 56 betätigt wird, und der unter Betätigung durch einen der Auslöser 55 oder 56 die Rückstellung des Schaltarms 43 von der Schließstellung in die Öffnungsstellung bewirkt. Der Auslöseschieber 53 beeinflusst diesen Rückstellungsprozess in zweifacher Weise, indem er zum einen den Schaltarm 53 von dem Mitnehmer 46 entklinkt, und damit den automatischen Rückstellungsprozess des Schaltarms 43 unter Wirkung der Zugfeder 52 in Gang setzt, und indem er zum anderen den Schaltarm 43 "anschiebt", ihm also ein Impulsstoß versetzt, um die Trägheit des Schaltarms 43 bei der Rückstellung schneller zu überwinden und somit den Schaltprozess zu beschleunigen.Kembestandteil the
Für den Kurzschlussfall ist der Auslösevorgang in den
Jede der Kemscheiben 58 ist mit einer Längsnut versehen. Die Kemscheiben 58 sind dabei derart aneinander angesetzt, dass sich die Längsnuten zu einer Durchführung ergänzen, in der der Stößel 61 gleitend einliegt. Der Stößel 61 ist mit dem Magnetanker 60 verbunden und wird bei dessen Bewegung gegen den Auslöseschieber 53 vorgeschoben. Dabei schlägt er an einer Anschlagfläche 92 des Auslöseschiebers 53 an und hebt unter fortgesetztem Vorschub den Auslöseschieber 53 aus der in
Zur Entklinkung des Mitnehmers 46 von der Klinke 51 weist der Auslöseschieber 53 eine Entklinkungskontur 93 auf. Die Entklinkungskontur 93 ist mit einer Ausnehmung 94 versehen, in die die Koppelstange 45 mit dem Mitnehmer 46 eingreift, so dass durch den Vorschub des Auslöseschiebers 53 der Mitnehmer 46 von der Klinke 51 des Klingenhebels 49 abgezogen wird.To unlatch the
Der Auslöseschieber 53 ist des Weiteren mit einem Vorsprung versehen, der als Anschlag 95 zur Beaufschlagung des Schaltarms 43 dient. Dieser (erster) Anschlag 95 schlägt gleichzeitig oder unmittelbar nach der Entklinkung des Schaltarms 43 gegen diesen an und beschleunigt den Schaltarm 43 in Richtung auf dessen Öffnungsstellung. Die Geometrie des Auslöseschiebers 53 ist insbesondere derart bemessen, dass der Anschlag 95 an dem Schaltarm 43 zu einem Zeitpunkt zur Anlage kommt, zu dem sich der Schaltarm 43 noch nicht entspannt hat. Der Schaltarm 43 ist wiederum derart gestaltet, dass der Anschlag 95 gegen den Kontakthebel 48 (und nicht gegen den Klinkenhebel 49) anschlägt. Durch die Reibung des Kontakthebels 48 mit dem Anschlag 95 wird die Drehbeweglichkeit des Kontakthebels 48 blockiert. Auf diese Weise wird verhindert, dass sich der Schaltarm 43 vor dem Abheben des Bewegkontakts 84 von dem Festkontakt 85 entspannt. Vielmehr wird der Kontakthebel 48 unmittelbar mit dem Anschlagen des Auslöseschiebers 53 angehoben (s.
Der Auslöseschieber 53 ist insbesondere derart angeordnet, dass der Anschlag 95 im Bereich des Drehgelenks 81 auf den Schaltarm 43 trifft, so dass durch den Anschlag 95 auf den Kontakthebel 48 kein Drehmoment relativ zu dem Klinkenhebel 49 übertragen wird. Der Kontakthebel 48 überragt im Bereich des Drehgelenks 81 den Klinkenhebel 49 in radialer Richtung, so dass gewährleistet ist, dass der Anschlag 95 auf den Kontakthebel 48 trifft.The
Wie in
Bevor der Kontakthebel 43 die Öffnungsstellung erreicht, schlägt er, wiederum im Bereich des Drehgelenks 81 an einen zweiten Anschlag 96 des Auslöseschiebers 53 an und nimmt diesen unter fortgesetztem Zurückweichen in die Öffnungsstellung mit.Before the
Nachdem im Zuge des Auslöseprozesses der Mitnehmer 46 mit der Klinke 51 entklinkt ist, ist auch der Schwenkhebel 7 nicht länger in der zweiten Schwenkstellung gehalten und kehrt unter Wirkung der Torsionsfeder 47 in die erste Schwenkstellung zurück. Dabei wird der Mitnehmer 46 aus der Ausnehmung 94 der Entklinkungskontur 93 herausgeschoben und gleitet die Aufgleitschräge 98 herab, bis er hinter der Klinke 51 wieder verrastet. Das Einrasten des Mitnehmers 46 hinter der Klinke 51 wird durch eine Federlasche 72 (
Im Zuge des vorstehend beschriebenen Auslösevorgangs entsteht zwischen dem Festkontakt 85 und dem sich von diesem abhebenden Bewegkontakt 84 ein Schaltlichtbogen, der zu einer starken Erhitzung und langfristig zu einem Abbrennen der Kontakte 84 und 85 führt. Die Löscheinrichtung 41 dient hierbei zur schnellen effektiven Löschung des Lichtbogens.In the course of the tripping operation described above, a switching arc arises between the fixed
Beim Öffnen der Kontakte 84 und 85 wirkt der Stromfluss innerhalb des Kontakthebels 48, der Lichtbogenstrecke und der dem Kontakthebel 48 gegenüberliegenden Strecke des Magnetjochs 59 als Stromschleife. Dieses Stromschleife übt auf den Lichtbogen eine Induktionskraft aus, die den Lichtbogen in Richtung auf die Löschkammer 63 treibt.When opening the
Mit dem Anschlagen des Schaltarms 43 an der Anschlagfläche 97 wird die leitende Verbindung zwischen dem Bimetallstreifen 54, der Litzenverbindung 87a (
Mit Rücksicht auf die elektrodynamische Wirkung des Strompfades ist auch das Magnetjoch 59, in das die Laufschiene 65 integriert ist, nicht kreisförmig um die Magnetspule 57 herum geschlossen. Vielmehr ist das Magnetjoch 59 an einer dem Magnetanker 60 zugewandeten Unterseite durch einen engen Luftspalt 99 (
Insgesamt bleibt die geometrische Charakteristik des Stromflusses innerhalb des Schutzschaltermoduls 2 und die hierdurch hervorgerufene Induktionswirkung, über den gesamten Auslösevorgang bis zum Erlöschen des Lichtbogens erhalten.Overall, the geometric characteristics of the current flow within the
Unter der Induktionswirkung löst sich der Lichtbogen nach dem Anschlagen des Kontakthebels 48 an der Anschlagfläche 97 von den Kontakten 84 und 85 ab und geht auf die angrenzenden Laufschienen 65 und 66 über. Dieser Vorgang wird als Kommutierung bezeichnet. Der Lichtbogen wandert anschließend - weiterhin unter dem Einfluss der elektrodynamischen Kräfte - entlang der Laufschienen 65 und 66 in einem zwischen diesen gebildeten Lichtbogenlaufraum 101 (
Über den Einlass 102 tritt der Lichtbogen in die Löschkammer 63 ein und wird durch die Löschbleche 64 in eine Anzahl von Teillichtbögen aufgeteilt. Die Löschbleche 64 begünstigen die Löschung des Lichtbogens in an sich bekannter Weise, indem die über die gesamte Lichtbogenstrecke abfallende Gesamtspannung vervielfacht und der Lichtbogen gekühlt wird.Through the
Durch den Lichtbogen wird die Luft lokal stark erhitzt, wodurch im Lichtbogenlaufraum 101 eine Druckwelle entsteht, die der Lichtbogen während der Propagation in Richtung auf die Löschkammer 63 vor sich herschiebt. Um zu verhindern, dass diese Druckwelle den Einlauf des Lichtbogen in die Löschkammer 63 behindert oder dass der nach dem Abkühlen der Luft entstehende Unterdruck den Lichtbogen in den Bereich der Kontakte 84 und 85 zurücksaugt, ist die Löscheinrichtung 41 mit einem Luftausgleichssystem versehen, dessen Funktion in
An dem dem Einlass 102 gegenüberliegenden Ende weist die Löschkammer 63 einen Auslass 106 (
Die Verdämmung wird im Wesentlichen durch einen Trennsteg 107 aus Isoliermaterial bewirkt, der an den Auslass 106 der Löschkammer 63 angeformt ist und von dort in Propagationsrichtung P absteht. Dieser Trennsteg 107 bewirkt des Weiteren eine Trennung des die Löschkammer 63 verlassenden Gasstroms in zwei Teilströme und erschwert somit weiter eine Rückzündung des Lichtbogens.The damming is effected essentially by a separating
Eine weitere Unterteilung in (schematisch angedeutete) Teilströme T1 bis T8 erfährt der Gasstrom durch die an das Gehäuse 3 angeformten Leitbleche 69, von denen jeweils drei den Trennsteg 107 beidseitig flankieren. Die Leitbleche 69 lenken die Teilströme T1 bis T8 des Weiteren in Richtung der Seitenfläche 22b (d.h. in der Darstellung gemäß
In Überlastfall erfolgt die Auslösung in prinzipiell gleicher Weise wie in dem vorstehend beschriebenen Kurzschlussfall. Jedoch wird der Auslöseschieber 53 in diesem Fall nicht von dem Stößel 61 des Kurzschlussauslösers 56, sondern von dem Bimetallstreifen 54 des Überlastauslösers 55 vorgeschoben, der sich aufgrund des Überlaststroms erhitzt und dabei derart ausbiegt, dass sein Freiende 110 (
Um die Auslöseschwelle des Schutzschaltermoduls 2 im Überlastfall zu justieren, ist der Angriff 111 zweiteilig ausgebildet und umfasst eine an den Auslöseschieber 53 angeformte Halterung 112 (
Zu Betätigung des Signalrelais 71 umfasst der Auslöseschieber 53 ferner einen Ausleger 116 (
Die
An diesen Körper 121 ist einerseits eine Griffkopplung 123 und andererseits eine Auslösekopplung 124 angeformt. Die Griffkopplung 123 ist über ein Filmscharnier 125 schwenkbar an dem Körper 121 angespritzt und greift in einem in
Durch das Koppelstück 120 wird somit mittels eines einstückigen Bauteils sowohl eine mechanische Fixierung der Schutzschaltermodule 2 als auch eine dynamische Kopplung sowohl der Handbetätigungsmechanik 42 und der Auslösemechanik 44 beider Schutzschaltermodule 2 erreichtBy means of the
Zur Verstärkung der mechanischen Fixierung werden die Schutzschaltermodule 2 zusätzlich durch Klammern 128 an den Seitenflächen 22a, 22b und der Rückseite 8 miteinander verbunden.To reinforce the mechanical fixation, the
Die jeweils außenliegenden Stirnseiten 14a, 14b der Schutzschaltermodule 2 werden durch je einen Blinddeckel 15a (bzw. 15b) abgedeckt. Weitere Frontabdeckungen 129 schließen den jeweils um den Schwenkhebel 7 herum angeordneten Bereich der Frontseite 4 zwischen den Schutzschaltermodulen 2 ab.The respective outer end faces 14a, 14b of the
Die
Eine dynamische Kopplung der einzelnen Schutzschaltermodule 2 ist bei einem Stromverteiler in der Regel nicht erwünscht. Die Schutzschaltermodule 2 sind gemäß
Die Stromschiene 130 ist mit einem Rückenüberzug 131 aus Isoliermaterial versehen. In eingeschobenem Zustand steht nur dieser Rückenüberzug 131 an der Seitenfläche 22a hervor und schließt den Gehäuseschlitz 30 zu dieser Seitenfläche 22a berührungssicher ab (
Jeder Abschlussstreifen 132 ist mit einer seinen Rand umlaufenden Führungsnut 133 versehen. Mit dieser Führungsnut 133 ist der Abschlussstreifen 132 auf einen Führungssteg 134 aufgeschoben, der den Rand des Gehäuseschlitzes 30 an jeder Stirnseite 14a,14b umläuft. Je ein Abschlussstreifen 132 ist bevorzugt über eine Sollbruchstelle an der Rückseite 8 des Gehäuses 3 eines jeden Schutzschaltermoduls 2 angespritzt, so dass er bei Bedarf abgebrochen und in den Gehäuseschlitz 30 eingeschoben werden kann.Each
In den
Die Stromschienenstücke 135a und 135 b können alternativ oder in beliebiger Kombination verwendet werden, um die Signalkreise der Schutzschaltermodule 2 miteinander zu verschalten.The
- 11
- Schutzschalterbreaker
- 22
- SchutzschaltermodulProtection switch module
- 33
- Gehäusecasing
- 44
- Frontseitefront
- 55
- Mittelteilmidsection
- 66
- Handgriffhandle
- 77
- Schwenkhebelpivoting lever
- 88th
- Rückseiteback
- 99
- Aufnahmeadmission
- 1010
- Rastschieberlocking slide
- 1111
- Führungguide
- 1212
- Federarmspring arm
- 1313
- Rastnaselocking lug
- 14a,b14a, b
- Stirnflächeface
- 15a,b15a, b
- Blinddeckelblind cover
- 1616
- Haltevorsprungretaining projection
- 1717
- Aufnahmeadmission
- 1818
- Eingrifföffnungengagement opening
- 1919
- Relingrailing
- 2020
- BeschriftungsschildLegend plate
- 2121
- Aufnahmeadmission
- 22a,b22a, b
- Seitenflächeside surface
- 2323
- Gehäuseöffnunghousing opening
- 2424
- Einspeisungsanschlussfeed tab
- 2525
- Gehäuseöffnunghousing opening
- 2626
- Lastanschlussload connection
- 27a,b27a, b
- Gehäuseöffnunghousing opening
- 28a,b28a, b
- Signalanschlusssignal connection
- 2929
- Koppelkontaktcoupling contact
- 3030
- Gehäuseschlitzhousing slot
- 31a,b31a, b
- Koppelkontaktcoupling contact
- 32a,b32a, b
- Gehäuseschlitzhousing slot
- 4040
- Schaltschlossswitch lock
- 4141
- Löscheinrichtungextinguishing device
- 4242
- HandbetätigungsmechanikHand operating mechanism
- 4343
- Schaltarmshifting
- 4444
- Auslösemechanikrelease mechanism
- 4545
- Koppelstangecoupling rod
- 4646
- Mitnehmertakeaway
- 4747
- Torsionsfedertorsion spring
- 4848
- Kontakthebelcontact lever
- 4949
- Klinkenhebelratchet lever
- 5050
- Hebelendelever end
- 5151
- Klinkepawl
- 5252
- Zugfedermainspring
- 5353
- Auslöseschiebertrip slider
- 5454
- Bimetallstreifenbimetallic strip
- 5555
- ÜberlastauslöserOverload release
- 5656
- KurzschlussauslöserShort-circuit release
- 5757
- Magnetspulesolenoid
- 5858
- KemscheibeKemscheibe
- 5959
- Magnetjochyoke
- 6060
- Magnetankerarmature
- 6161
- Stößeltappet
- 6262
- Druckfedercompression spring
- 6363
- Löschkammerextinguishing chamber
- 6464
- Löschblechsplitter
- 6565
- Laufschienerunner
- 6666
- Laufschienerunner
- 6767
- Stromzuführungpower supply
- 68a,b68a, b
- Abdeckplattecover
- 6969
- Leitblechbaffle
- 7070
- Stromschieneconductor rail
- 7171
- Signalrelaissignal relay
- 7272
- Federlaschespring shackle
- 7373
- Gehäuseschaleshell
- 7474
- Gehäusedeckelhousing cover
- 7575
- Nieterivet
- 8080
- Drehachseaxis of rotation
- 8181
- Drehgelenkswivel
- 8282
- LanglochLong hole
- 8383
- (rückwärtiges) Hebelende(rearward) lever end
- 8484
- Bewegkontaktmoving contact
- 8585
- Festkontaktfixed contact
- 8686
- Stromschieneconductor rail
- 87a,b87a, b
- Litzenverbindungstranded connection
- 8888
- Schwenkachseswivel axis
- 8989
- Festendefixed end
- 9090
- Radialführungradial guide
- 9191
- Kulissenführunglink guide
- 9292
- Anschlagflächestop surface
- 9393
- EntklinkungskonturEntklinkungskontur
- 9494
- Ausnehmungrecess
- 9595
- (erster) Anschlag(first) stop
- 9696
- (zweiter) Anschlag(second) stop
- 9797
- Anschlagflächestop surface
- 9898
- AufgleitschrägeAufgleitschräge
- 9999
- Luftspaltair gap
- 100100
- Ausgangoutput
- 101101
- LichtbogenlaufraumArc running space
- 102102
- Einlassinlet
- 103a,b103a, b
- DruckausgleichkanalPressure compensation channel
- 104104
- Öffnungopening
- 105105
- Öffnungopening
- 106106
- Auslassoutlet
- 107107
- Trennstegdivider
- 110110
- Freiendefree end
- 111111
- Angriffattack
- 112112
- Halterungbracket
- 113113
- Exzentereccentric
- 114114
- Zahnkranzsprocket
- 115115
- Rastzahnratchet
- 116116
- Auslegerboom
- 120120
- Koppelstückcoupling piece
- 121121
- Körperbody
- 122122
- Fixiervorsprungfixing projection
- 123123
- Griffkopplunghandle link
- 124124
- Auslösekopplungrelease coupling
- 125125
- Filmscharnierfilm hinge
- 126126
- Federarmspring arm
- 127127
- Koppelvorsprungcoupling lead
- 128128
- Klammerclip
- 129129
- Frontabdeckungfront cover
- 130130
- Stromschieneconductor rail
- 131131
- Rückenüberzugback cover
- 132132
- Abschlussstreifentrim strip
- 133133
- Führungsnutguide
- 134134
- Führungsstegguide web
- 135a,b135a, b
- StromschienenstückBusbar piece
- PP
- Propagationsrichtungpropagation
- RR
- Rückströmungbackwash
- T1-T8T1-T8
- Teilstrompartial flow
Claims (9)
- A protection switch (1) with several single-pole protection switch modules (2), which comprise each a housing (3), a manual operating mechanism (42) and a tripping mechanism (44) and which can be joined together to a multi-pole protection switch configuration, so that the protection switch modules (2) form a mechanically coherent unit, wherein the manual operating mechanisms (42) of all of the protection switch modules (2) are coupled, so that the protection switch modules (2) can only be switched jointly, and wherein the tripping mechanisms (44) of all of the protection switch modules (2) are coupled, so that by the tripping mechanism (44) of each of the protection switch modules (2) also all others of the protection switch modules (2) are tripped, with a one-piece coupling piece (120), which is insertable between adjoining protection switch modules (2), and which serves for mechanical fixing of the protection switch modules (2) to one another and causes a coupling of the tripping mechanism (44) of both of the protection switch modules (2),
characterized in that each protection switch module (2) comprises a switching arm (43) carrying a moving contact (84), which is pivotably movable against a fixed contact (85) between a closed position and an open position, wherein the switching arm (43) is manually adjustable by means of the manual operating mechanism (42), wherein the switching arm (43) is automatically resettable Into the open position by means of the tripping mechanism (44) upon occurrence of a tripping condition, and wherein also the manual operating mechanisms (42) of two adjoining protection switch modules (2) are coupled by the coupling piece (120) Inserted in between. - A protection switch (1) according to claim 1,
characterized in that the coupling piece (120) is constructed as a molded plastic part. - A protection switch (1) according to claim 1 or 2,
characterized by a dummy lid (15a, 15b) which is attachable onto an exposed housing end face (14a, 14b) to close the exposed housing end face (14a, 14b). - A protection switch (1) according to one of the claims 1 to 3,
characterized in that the or each protection switch module (2) has a supply connection (24) electrically connected to the moving contact (84) for connecting a conductor, wherein a couple contact (29) configured for contacting a current rail (130), spanning several protection switch modules (2), is connected in parallel with the supply connection (24), wherein the couple contact (29) is arranged in a housing slot (30) spanning the entire housing width. - A protection switch (1) according to one of the claims 1 to 4,
characterized In that the or each protection switch module (2) has two signal connections (28a, 28b) electrically connected to a signal relay (71) for connecting a conductor, wherein a coupling contact (31 a, 31 b), configured for contacting a current rail piece (135a, 135b), spanning several protection switch modules (2), is connected in parallel with at least one of the signal connections (28a, 28b), wherein the or each coupling contact (31 a, 31 b) is arranged in a housing slot (32a, 32b), spanning the entire housing width. - A protection switch (1) according to claim 4 or 5,
characterized in that the housing slot (30, 32a, 32b) is dimensioned regarding its opening width and depth in such a way that the corresponding coupling contact (29, 31 a, 31 b) is accommodated in a finger proof manner in the housing. - A protection switch (1) according to one of the claims 4 to 6,
characterized in that a closing strip (132) of insulating material is insertable into the housing slot (30, 32a, 32b) at each of the housing end faces (14a, 14b), this closing strip (132), when it is inserted, closing off the housing slot (30, 32a, 32b) towards the corresponding housing end face (14a, 14b). - A protection switch (1) according to claim 7,
characterized in that the housing slot (30, 32a, 32b) has at each of the housing end faces (14a, 14b) a guide strip (134), which interacts with a corresponding guide slot (133) of the closing strip (132) for fixing the closing strip (132) in a form-locking manner. - A protection switch (1) according to claim 7 or 8,
characterized in that the closing strip (132) is molded onto the housing (3) at a predetermined breaking point.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL06805855T PL2030213T3 (en) | 2006-06-12 | 2006-09-25 | Protection switch |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006027140A DE102006027140A1 (en) | 2006-06-12 | 2006-06-12 | breaker |
PCT/EP2006/009296 WO2007144017A1 (en) | 2006-06-12 | 2006-09-25 | Protection switch |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2030213A1 EP2030213A1 (en) | 2009-03-04 |
EP2030213B1 true EP2030213B1 (en) | 2012-07-25 |
Family
ID=37564241
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06805854A Active EP2030216B1 (en) | 2006-06-12 | 2006-09-25 | Protection switch |
EP06805853A Not-in-force EP2030215B1 (en) | 2006-06-12 | 2006-09-25 | Protection switch |
EP06805855A Not-in-force EP2030213B1 (en) | 2006-06-12 | 2006-09-25 | Protection switch |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06805854A Active EP2030216B1 (en) | 2006-06-12 | 2006-09-25 | Protection switch |
EP06805853A Not-in-force EP2030215B1 (en) | 2006-06-12 | 2006-09-25 | Protection switch |
Country Status (10)
Country | Link |
---|---|
US (3) | US7834290B2 (en) |
EP (3) | EP2030216B1 (en) |
JP (3) | JP4827967B2 (en) |
CN (3) | CN101461022B (en) |
AU (3) | AU2006344591B2 (en) |
CA (3) | CA2654002C (en) |
DE (4) | DE102006027140A1 (en) |
ES (3) | ES2391293T3 (en) |
PL (3) | PL2030215T3 (en) |
WO (3) | WO2007144017A1 (en) |
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DE202011110187U1 (en) | 2011-11-22 | 2013-01-18 | Ellenberger & Poensgen Gmbh | Electrical switching device |
WO2013075726A1 (en) | 2011-11-22 | 2013-05-30 | Ellenberger & Poensgen Gmbh | Electric switching device |
CN103515162A (en) * | 2012-06-18 | 2014-01-15 | 北京人民电器厂有限公司 | Miniature circuit breaker |
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-
2006
- 2006-06-12 DE DE102006027140A patent/DE102006027140A1/en not_active Withdrawn
- 2006-09-25 EP EP06805854A patent/EP2030216B1/en active Active
- 2006-09-25 CN CN2006800549440A patent/CN101461022B/en not_active Expired - Fee Related
- 2006-09-25 AU AU2006344591A patent/AU2006344591B2/en not_active Ceased
- 2006-09-25 JP JP2009514647A patent/JP4827967B2/en not_active Expired - Fee Related
- 2006-09-25 ES ES06805853T patent/ES2391293T3/en active Active
- 2006-09-25 EP EP06805853A patent/EP2030215B1/en not_active Not-in-force
- 2006-09-25 AU AU2006344592A patent/AU2006344592B2/en not_active Ceased
- 2006-09-25 JP JP2009514645A patent/JP4827966B2/en not_active Expired - Fee Related
- 2006-09-25 ES ES06805854T patent/ES2391294T3/en active Active
- 2006-09-25 WO PCT/EP2006/009296 patent/WO2007144017A1/en active Application Filing
- 2006-09-25 CA CA2654002A patent/CA2654002C/en not_active Expired - Fee Related
- 2006-09-25 WO PCT/EP2006/009295 patent/WO2007144016A1/en active Application Filing
- 2006-09-25 DE DE202006021096U patent/DE202006021096U1/en not_active Expired - Lifetime
- 2006-09-25 PL PL06805853T patent/PL2030215T3/en unknown
- 2006-09-25 WO PCT/EP2006/009294 patent/WO2007144015A1/en active Application Filing
- 2006-09-25 JP JP2009514646A patent/JP5244791B2/en active Active
- 2006-09-25 PL PL06805855T patent/PL2030213T3/en unknown
- 2006-09-25 CN CN2006800549582A patent/CN101461023B/en active Active
- 2006-09-25 CA CA2656061A patent/CA2656061C/en not_active Expired - Fee Related
- 2006-09-25 CA CA2653649A patent/CA2653649C/en not_active Expired - Fee Related
- 2006-09-25 CN CN200680054946XA patent/CN101461021B/en not_active Expired - Fee Related
- 2006-09-25 DE DE202006021095U patent/DE202006021095U1/en not_active Expired - Lifetime
- 2006-09-25 AU AU2006344590A patent/AU2006344590B2/en not_active Ceased
- 2006-09-25 DE DE202006021064U patent/DE202006021064U1/en not_active Expired - Lifetime
- 2006-09-25 ES ES06805855T patent/ES2391295T3/en active Active
- 2006-09-25 EP EP06805855A patent/EP2030213B1/en not_active Not-in-force
- 2006-09-25 PL PL06805854T patent/PL2030216T3/en unknown
-
2008
- 2008-12-12 US US12/333,558 patent/US7834290B2/en active Active
- 2008-12-12 US US12/333,901 patent/US8098119B2/en not_active Expired - Fee Related
- 2008-12-12 US US12/333,553 patent/US7978033B2/en not_active Expired - Fee Related
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