EP0252786A1 - Schalter mit zwei Schaltkreisen, wovon einer geschützt ist - Google Patents

Schalter mit zwei Schaltkreisen, wovon einer geschützt ist Download PDF

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Publication number
EP0252786A1
EP0252786A1 EP87401321A EP87401321A EP0252786A1 EP 0252786 A1 EP0252786 A1 EP 0252786A1 EP 87401321 A EP87401321 A EP 87401321A EP 87401321 A EP87401321 A EP 87401321A EP 0252786 A1 EP0252786 A1 EP 0252786A1
Authority
EP
European Patent Office
Prior art keywords
housing
face
circuit breaker
symmetry
partition
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.)
Granted
Application number
EP87401321A
Other languages
English (en)
French (fr)
Other versions
EP0252786B1 (de
Inventor
Dominique Beurdeley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telemecanique SA
Original Assignee
La Telemecanique Electrique SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by La Telemecanique Electrique SA filed Critical La Telemecanique Electrique SA
Priority to AT87401321T priority Critical patent/ATE67343T1/de
Publication of EP0252786A1 publication Critical patent/EP0252786A1/de
Application granted granted Critical
Publication of EP0252786B1 publication Critical patent/EP0252786B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H01H71/002—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00 with provision for switching the neutral conductor

Definitions

  • the present invention relates to a circuit breaker of the type comprising, housed inside a single modular insulating housing, two switching circuits each comprising a switching device with fixed and movable contacts, these two circuits forming two respective current paths interruptible by virtue of a controlled trip device: - either by at least one automatic tripping device on fault, for example magnetic and / or thermal, - either by a manual triggering and resetting control member.
  • circuit breaker of the above type in which only one of the two circuits, preferably assigned to the phase current of a single-phase network is protected in the sense that it causes, following a current fault which passes through it, the actuation of the automatic trip member and, consequently, the opening of the two switches.
  • actuation of the movable contact is ensured by a lock comprising: - a hook movable by the automatic triggering member, - A trigger lever provided at one end with a spoiler cooperating with the hook and connected to the manual control member, so as to pivot, either by bearing on the hook to effect voluntary opening of the contacts, or on a movable axis connected to the manual control member for automatic triggering.
  • the trigger lever is connected to a separate contact piece by means of a spring constituting, on the one hand, an elastic transmission link between the lever and the contact piece and contributing, on the other hand hand, at the abrupt opening of the contact piece.
  • the advantage of this device lies in its great simplicity of design and assembly and in its very small footprint, in particular a module with a width of less than 17.5 mm.
  • the object of the invention is more particularly to include in a device of this kind fitted or not with the lock described above and without significantly increasing the dimensions of the housing, a second unprotected switching circuit but the movable contact of which is actuated by the automatic tripping device associated with the other switching circuit or by the manual control unit, it being understood that this result must be obtained with as good electrical insulation as possible between the two switching circuits.
  • a circuit breaker comprising a housing having, on the one hand, a first and a second front faces parallel to a median plane of symmetry and slightly spaced from each other and, on the other hand, perpendicular to said plane of symmetry, a fixing face, a front face opposite to the fixing face and equipped with a manual control member and a first and a second opposite side faces each equipped with a pair of terminals arranged on either side of said median plane of symmetry and respectively connected to the two switching circuits.
  • This box is formed of first and second half-boxes which are substantially symmetrical with respect to the median plane of symmetry and each comprising the two terminals of the same switching circuit.
  • this circuit breaker is more particularly characterized in that, in at least one region adjacent to the fixing face, the internal volume of the housing is divided by a partition made of an electrically insulating material which extends from the first to the second lateral face, this partition comprising at least: a first flat portion connected to the first lateral face of the housing and which extends in the median plane of symmetry, delimiting with the first half-housing a first volume housing the switch device of the first switching circuit and, with the second half-housing, a second volume symmetrical to the first and housing the switch device of the second switching circuit, said switch devices being respectively connected at the two terminals fitted to the first side face of the housing, - A second flat portion offset, relative to said plane, on the side of the front face of the second half-housing, and connected to the first portion by a first recess, this second portion extending a short distance from the front face of the second half-box and parallel to it, delimiting therewith an intermediate space of small width through which passes a partition made of an electrical
  • the aforesaid partition comprises in a zone located opposite the front face of the housing, at least one notch freeing, between the two front faces of the housing, a free volume containing at least partially the above-mentioned triggering device and its mechanical connections. with the automatic trip device on fault and the manual trip and reset control device.
  • the two movable contact elements of the two switch devices are rotatably mounted on either side of the said first portion of the partition, around the same axis of rotation perpendicular to the median plane of symmetry and are actuated by two springs. respective serving as elastic transmission links between the release device and the two movable contact elements.
  • the circuit breaker shown in these drawings comprises a housing having, on the one hand, two plane front faces 1, 2, parallel to a median plane of symmetry YY ⁇ ( Figure 2) and slightly distant from each other (distance - d -) and, on the other hand, perpendicular to said plane of symmetry: a fixing face 3 provided with means of assembly to a support device, these assembly means here consisting of a prismatic groove 4 substantially in the form of a dovetail intended to cooperate with a profiled support rail, a front face 5 opposite the fixing face and provided with an opening 6 from which emerges the manual grip 7 of a manual control button M, and - Two lateral faces 8, 9 which extend perpendicular to the fixing face 3 and which each comprise two terminals B11, B21; B12, B22, respectively connected to the two circuit-breaker switching circuits, these two terminals B11, B21; B12, B22 being arranged, on the same level, on either side of the median plane of symmetry YY ⁇ .
  • This box is obtained by assembling two half-boxes 10, 11 which are substantially symmetrical with respect to the median plane of symmetry YY ⁇ and which each therefore comprise a front face 1, 2 as well as portions of the fixing face 3 of the front face 5 and side faces 8, 9, complementary to those of the other half-housing.
  • Each half-housing 10, 11 comprises, opening onto the two lateral faces 8, 9, the two terminals B11, B12 - B21, B22 which serve for the connection of the circuit breaker with external circuits.
  • the terminals B11, B12 are assigned to the protected switching circuit while the terminals B21, B22 are assigned to the unprotected switching circuit.
  • This housing further comprises, in its lower part, an internal partition 13 of an electrically insulating material which extends from one lateral face 8, 9 to the other, contiguous to the fixing face 3.
  • This partition 13 is in particular visible in Figures 2 and 4 and its outline has been drawn in thick lines in Figure 3.
  • This partition has lateral edges 14, 15 and a lower edge 16 of suitable shape to come together respectively on the lateral faces 8, 9 and on the fixing face 3, at the junction between the two half-housings 1 , 2.
  • this structure makes it possible to obtain optimal use of the interior volume of the housing for the implantation of the two switching circuits and of the mechanism associated with them, as well as perfect electrical insulation between these two circuits. .
  • volume VO1 contains the switch device of the protected switching circuit which is illustrated in FIG. 1.
  • This switch device comprises a movable contact element P12 in the form of a lever, the two arms 23, 24 of which form an acute angle and which is pivotally mounted, at its angular region, around an axis of rotation.
  • XX ⁇ perpendicular to the plane of symmetry YY ⁇ .
  • This movable contact P12 is electrically connected to a conductive part P11 which ensures its connection to the terminal B11.
  • This movable contact element P12 cooperates, by the end of the arm 24 which carries the movable contact C11, with a fixed contact element C12 connected to the terminal B12 via a protection circuit comprising a magnetic trip device DM and a thermal trip device DT, both partially housed in volume VO3.
  • this volume VO3 makes it possible to contain, without having to increase the width of the case, the coil of the magnetic trigger DM which is relatively bulky and whose width can now be close to that - d - of the case.
  • the volume VO2 contains the switch device of the unprotected switching circuit which is visible in FIG. 3.
  • This switch device itself comprises a movable contact element P22 in the form of a lever, similar in shape to that of the element P12 and which is mounted to rotate about the same axis of rotation XX ⁇ as the latter.
  • this movable contact P contact is electrically connected to a conductive part P conduct which ensures its connection to the terminal B21. It cooperates, by the end of the arm 24 ⁇ which carries the movable contact C21, with a fixed contact element C22 connected to the terminal B22 via of a flat conductive part P23 passing through the intermediate volume comprised between the partition portion 18 and the front face 2.
  • the switch devices P12, C11, C12 and P22, C21, C22 are associated with the same actuation mechanism which makes it possible to separate the movable contacts C11, C21 from the fixed contacts C12, C22 in response to the detection of an electrical fault via DM or DT triggers or, respectively in response to a manual command.
  • This actuation mechanism is essentially housed in the upper volume of the VO4 box which is not divided by the partition 13, in particular thanks to a notch provided in the upper part thereof.
  • the output element of the triggering means is a hook 32 rotatably mounted about an axis 02 fixed relative to the housing and cooperating by a fork 33 with a stock 34.
  • the stock 34 is located at the end of a core plunger 35 of the magnetic trip device DM.
  • the hook 32 further cooperates by means of a finger 36 with a deformable bimetal lever 37 of the thermal trip device DT.
  • the actuation mechanism further comprises a trigger lever 38 in the form of a pendulum made of insulating material.
  • the lever 38 is directly mounted on a tenon 39 of the manual member M and has, for this purpose, a slide 40 slightly inclined with respect to the front face 5 of the housing and cooperating with said tenon 39.
  • the lever 38 comprises, at a first end, a spoiler 42 resting on a support 43 of the hook 32, this support being erasable as a result of the pivoting of the hook 32 to authorize the rocker ment of the lever 38 in response to an electrical fault detected by the DM or DT trigger.
  • the lever 38 comprises, towards its second open end or head 44, a guide groove 45 substantially perpendicular to the front face 5 and cooperating with a guide pin 46 formed in the housing.
  • a guide groove 45 substantially perpendicular to the front face 5 and cooperating with a guide pin 46 formed in the housing.
  • two support or anchor points 47, 47 ⁇ of two respective springs R1, R ⁇ 1 are provided in a V-shaped pin.
  • the branches 48, 48 ⁇ of the springs R1, R ⁇ 1 are applied to the anchoring points 47, 47 ⁇ to tend to tilt the lever 38 clockwise; the branches 49, 49 ⁇ of the springs R1, R ⁇ 1 are in turn fixed in rotation on two respective pins 50 a , 50 b formed on the conductive parts P11, P21.
  • branches 49, 49 ⁇ are applied at their ends to two closing supports 51, 51 ⁇ provided on the movable contact elements P12, P22 located on the side opposite the arms 23, 24 - 23 ⁇ , 24 ⁇ relative to the axis XX ⁇ and can come to apply near the tip of the V, on two respective opening supports 56, 56 ⁇ provided at the end of the arms 23, 23 ⁇ .
  • the direction of rotation of the contact elements C11, C21 depends on the application of the differential force of the branches 49, 49 ⁇ on one or the other respective supports 51, 51 ⁇ ; 56, 56 ⁇ , this being a function of the position of the anchor points 47, 47 ⁇ of the branches 48, 48 ⁇ .
  • pin 39 is located opposite the manual grip 7 of the control button M relative to axis 01 and at a distance from this axis allowing amplification of the effort.
  • a return spring 54 is associated with the button M to assist the latter during a manual opening command and to call it back to the "stop" position during a trip on fault.
  • the magnetic trip device DM comprises a spring 66 urging the core 35 so that the stick 34 of the latter recalls the finger of the hook 32 in the armed position.
  • the hook 32 constitutes a lifter interposed between the magnetic core 35 and the bimetallic strip 37 so that the beginning of deflection of the bimetallic strip 37 causes a very slight counterclockwise pivoting of the hook 32 and therefore a slight plunge of the core 35.
  • the DM trigger trigger intensity threshold is lowered; an overload detected by the bimetallic strip 37 of the thermal trip device therefore results in greater sensitivity of the magnetic trip device.
  • the invention is not limited to the previously described mode of actuation: it is clear that, due to the available volume obtained thanks to the mode of installation of the switching circuits and to the use of a partition shaped according to the invention, it is possible to use other actuating devices based on different kinematics.

Landscapes

  • Breakers (AREA)
  • Burglar Alarm Systems (AREA)
  • Keying Circuit Devices (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP87401321A 1986-06-17 1987-06-12 Schalter mit zwei Schaltkreisen, wovon einer geschützt ist Expired - Lifetime EP0252786B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87401321T ATE67343T1 (de) 1986-06-17 1987-06-12 Schalter mit zwei schaltkreisen, wovon einer geschuetzt ist.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8608703 1986-06-17
FR8608703A FR2600210B1 (fr) 1986-06-17 1986-06-17 Disjoncteur a deux circuits de commutation dont l'un est protege

Publications (2)

Publication Number Publication Date
EP0252786A1 true EP0252786A1 (de) 1988-01-13
EP0252786B1 EP0252786B1 (de) 1991-09-11

Family

ID=9336390

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87401321A Expired - Lifetime EP0252786B1 (de) 1986-06-17 1987-06-12 Schalter mit zwei Schaltkreisen, wovon einer geschützt ist

Country Status (4)

Country Link
EP (1) EP0252786B1 (de)
AT (1) ATE67343T1 (de)
DE (1) DE3772877D1 (de)
FR (1) FR2600210B1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0403358A1 (de) * 1989-06-16 1990-12-19 Hager Electro S.A. Null- und Phasenschalter
EP0505292A1 (de) * 1991-03-20 1992-09-23 Schneider Electric Sa Phasen- und Nulleiter-Leitungsschutzschalter mit reduziertem Platzbedarf
EP0569650A1 (de) * 1992-05-13 1993-11-18 Hager Electro S.A. Phasen- und Nulleiter-Schutzschalter
EP0599800A1 (de) * 1992-11-25 1994-06-01 Felten & Guilleaume Austria Ag Leitungsschutzschalter
DE10060521A1 (de) * 2000-12-06 2002-06-20 Abb Patent Gmbh Leitungsschutzschalter mit einer Pol- und Nullleitertrennstelle
NL1027343C2 (nl) * 2004-10-26 2006-04-27 Eaton Electric Nv Beveiligingsschakelaar.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2485254A1 (fr) * 1980-06-19 1981-12-24 Merlin Gerin Disjoncteur miniature unipolaire et neutre

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2485254A1 (fr) * 1980-06-19 1981-12-24 Merlin Gerin Disjoncteur miniature unipolaire et neutre

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0403358A1 (de) * 1989-06-16 1990-12-19 Hager Electro S.A. Null- und Phasenschalter
FR2648614A1 (fr) * 1989-06-16 1990-12-21 Hager Electro Disjoncteur phase et neutre
EP0505292A1 (de) * 1991-03-20 1992-09-23 Schneider Electric Sa Phasen- und Nulleiter-Leitungsschutzschalter mit reduziertem Platzbedarf
FR2674369A1 (fr) * 1991-03-20 1992-09-25 Merlin Gerin Disjoncteur electrique de phase et neutre a encombrement reduit.
EP0569650A1 (de) * 1992-05-13 1993-11-18 Hager Electro S.A. Phasen- und Nulleiter-Schutzschalter
EP0599800A1 (de) * 1992-11-25 1994-06-01 Felten & Guilleaume Austria Ag Leitungsschutzschalter
AU672641B2 (en) * 1992-11-25 1996-10-10 Felten & Guilleaume Austria Ag Automatic cutout with a thermally and magnetically protected outer conductor pole and an unprotected neutral conductor pole
DE10060521A1 (de) * 2000-12-06 2002-06-20 Abb Patent Gmbh Leitungsschutzschalter mit einer Pol- und Nullleitertrennstelle
NL1027343C2 (nl) * 2004-10-26 2006-04-27 Eaton Electric Nv Beveiligingsschakelaar.

Also Published As

Publication number Publication date
ATE67343T1 (de) 1991-09-15
FR2600210B1 (fr) 1993-04-16
DE3772877D1 (de) 1991-10-17
EP0252786B1 (de) 1991-09-11
FR2600210A1 (fr) 1987-12-18

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