EP0295162A1 - Magnetothermische Auslöseeinheit für Lastschalter oder Differentiallastschalter - Google Patents

Magnetothermische Auslöseeinheit für Lastschalter oder Differentiallastschalter Download PDF

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Publication number
EP0295162A1
EP0295162A1 EP88401197A EP88401197A EP0295162A1 EP 0295162 A1 EP0295162 A1 EP 0295162A1 EP 88401197 A EP88401197 A EP 88401197A EP 88401197 A EP88401197 A EP 88401197A EP 0295162 A1 EP0295162 A1 EP 0295162A1
Authority
EP
European Patent Office
Prior art keywords
arm
support
cage
pole piece
magnetothermal
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
EP88401197A
Other languages
English (en)
French (fr)
Other versions
EP0295162B1 (de
Inventor
Jean-Marie Roiatti
Denis Deckert
Michel Fuchs
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.)
Hager Electro SAS
Original Assignee
Hager Electro SAS
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 Hager Electro SAS filed Critical Hager Electro SAS
Priority to AT88401197T priority Critical patent/ATE92210T1/de
Publication of EP0295162A1 publication Critical patent/EP0295162A1/de
Application granted granted Critical
Publication of EP0295162B1 publication Critical patent/EP0295162B1/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
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/40—Combined electrothermal and electromagnetic mechanisms
    • 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
    • H01H71/2463—Electromagnetic mechanisms with plunger type armatures
    • 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
    • H01H71/7436—Adjusting the position (or prestrain) of the bimetal
    • 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
    • H01H71/7463—Adjusting only the electromagnetic mechanism

Definitions

  • the present invention relates to a magnetothermal circuit breaker assembly for circuit breakers or differential circuit breakers.
  • Circuit breakers for example circuit breakers or differential devices arranged in a modular box and used for the protection of electrical installations, such as for example living space installations, include a more or less complex closing and opening mechanism of contact.
  • This mechanism can be actuated, for a sudden opening of the contacts, by an electromagnetic device comprising a coil sensitive to a sudden overcurrent and a plunger core, made of magnetic material such as mild steel, suddenly displaced in the event of an overcurrent, this core being provided with a striker acting on the mechanism to cause the opening and rapid and complete separation of the contacts.
  • These devices also have a bimetallic strip thermostatic flow through the same current as the coil and whose deformation is such, when the intensity exceeds the nominal value, that it causes the opening of the contact (s) by also acting on the mechanism.
  • the invention proposes to remedy these drawbacks and to provide a magnetothermal circuit breaker with a small footprint and which consists of an extremely small number of parts.
  • Another objective of the invention is to channel the magnetic fluxes in the device.
  • Another object of the invention is to provide such an assembly which is particularly easy to assemble and mount in an apparatus.
  • Another objective of the invention is to produce such an assembly at an extremely low manufacturing price.
  • the subject of the invention is a circuit breaker magnetothermal assembly for circuit breakers or differential circuit breakers, comprising a thermal part provided with a bimetallic strip arranged in cantilever and the free end of which is intended to cooperate with an opening mechanism. of contacts, and a magnetic part with an induction coil in series with the bimetallic strip and associated with a plunger core with a striker, said plunger core being returned to the rest position by an elastic return member, characterized in that it comprises a support or reinforcement obtained in one piece by cutting and folding a flat metal part, said support being folded in the manner of a cage, two opposite faces of which are each provided an orifice aligned along the same axis of movement of the plunger core, the support carrying or forming, at one of the orifices, a fixed pole piece cooperating with the anterior end, forming the movable pole piece, of the core plunger, said support having, from said cage, at least one elongated arm carrying at its end the bimetallic strip.
  • the support thus formed ensures the channeling of the magnetic fluxes, preventing their dispersion in the device.
  • said arm carrying the bimetallic strip extends parallel to another arm, also coming from the cage, an adjustment member, such as a screw, then allowing, towards the free end of the two arms, to spread more or less said arms against an elastic tendency to approach, so as to exactly adjust the position of the bimetallic arm relative to the other arm and therefore relative to the mechanism.
  • an adjustment member such as a screw
  • the bimetallic strip arm preferably comes from a return from the cage remote from the part of the cage having the orifice associated with the pole piece, this latter part advantageously being able to be extended to form the parallel arm provided at its end with the regulating member.
  • the support has, from one end to the other, a straight arm, the lower part of which forms one of the sides of the cage, pierced with an orifice associated with a pole piece , this pole piece can be either fixed for example by crimping, at the level of the orifice, or even obtained directly by local stamping of the support, this side continuing by means of a 90 ° elbow, by a first branch continuing itself, after another 90 ° bend, by a second flank also provided with an opening aligned with the previous one, after which a new 90 ° bend determines a second branch parallel to the first, the whole thus forming a rectangular cage receiving the winding, the guide piece and the plunger core, said second branch then continuing, after a new bend, by an arm parallel to the initial arm, and the free end of which cooperates with the first arm of so as to be arranged in parallel and at a short distance from the first arm, the end of this second arm carrying the bimetallic strip, for example by welding.
  • the electrical connection between the coil and the support takes place at the level of said second branch, that is to say at a location close to the arm carrying the bimetallic strip so as to shorten the electrical path in the support.
  • the assembly shown in the drawing is intended to be contained in a modular circuit-breaker or differential circuit-breaker box, of which a few housing elements 1 are simply seen. It comprises a support made of mild steel and obtained by stamping and bending from the unfolded blank shown in Figure 3. This support comprises a first straight arm 2 whose lower end 3 forms a cage flank provided with an orifice 4 bordered by a stamped bead 5 on which is crimped a pole piece 6 with its polar surface 7.
  • the flank 3 continues with a first branch 8 perpendicular to the arm 2 and which, after a second bend, continues by a new flank 9 parallel to the flank 3 and also provided with a passage of larger diameter aligned with the axis of the orifice 4.
  • the support decreases in width and, after a new bend , it forms a second arm 10, parallel to the arm 8 and offset from the mean plane of the assembly so as to be able to pass in front of the arm 2.
  • it then forms a second arm 11 which extends first parallel to arm 2 and then presents, towards its end, an oblique direction 12 making it possible to move its end 13 proper away from the free end of arm 2.
  • the end 13 has, in its plane, a reference which brings it in front the end of the arm 2.
  • a screw 15, screwed into the end of the arm 2 presses on the arm 13 and makes it possible to move the end 13 of the arm 2 more or less by pivoting the arm 11 around the elbow which connects it to the branch 10. This makes it possible to 'more or less tilt the rest position of the bimetallic strip and ensure the adjustment of the device relative to an element 27 of the lock release mechanism.
  • a tubular guide sleeve 16 made of insulating material in which a plunger core 17 made of mild steel can move, traversed by a striker 18 in the form of a light alloy rod and the l end can spring out of the orifice 4 surrounded by the pole piece 6 when the core approaches it until it contacts its front pole surface 19 with the surface 7 of the pole piece 6.
  • the tubular sleeve 16 is surrounded by the turns of the winding 24, of a usual type, one end of which is connected to a contact of the circuit breaker and the other of which, 25, is welded to the branch 10 at a short distance from the arm 11 to ensure the passage of current to the bimetallic strip 14 by limiting the heating.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Non-Reversible Transmitting Devices (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP88401197A 1987-06-11 1988-05-18 Magnetothermische Auslöseeinheit für Lastschalter oder Differentiallastschalter Expired - Lifetime EP0295162B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88401197T ATE92210T1 (de) 1987-06-11 1988-05-18 Magnetothermische ausloeseeinheit fuer lastschalter oder differentiallastschalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8708122 1987-06-11
FR8708122A FR2616584B1 (fr) 1987-06-11 1987-06-11 Ensemble magnetothermique de disjonction pour disjoncteur ou disjoncteur differentiel

Publications (2)

Publication Number Publication Date
EP0295162A1 true EP0295162A1 (de) 1988-12-14
EP0295162B1 EP0295162B1 (de) 1993-07-28

Family

ID=9351922

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88401197A Expired - Lifetime EP0295162B1 (de) 1987-06-11 1988-05-18 Magnetothermische Auslöseeinheit für Lastschalter oder Differentiallastschalter

Country Status (4)

Country Link
EP (1) EP0295162B1 (de)
AT (1) ATE92210T1 (de)
DE (1) DE3882601T2 (de)
FR (1) FR2616584B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19935662A1 (de) * 1999-07-29 2001-02-01 Abb Patent Gmbh Elektromagnetischer Auslöser
WO2003094188A1 (en) * 2002-05-01 2003-11-13 Eaton Corporation Adjustable magnetic trip assembly for circuit breaker
CN101556883B (zh) * 2008-03-01 2014-08-06 Abb股份有限公司 开关装置
WO2017148638A1 (de) * 2016-03-03 2017-09-08 Siemens Aktiengesellschaft Auslösevorrichtung und elektromechanisches schutzschaltgerät

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004004840B4 (de) * 2004-01-30 2006-05-11 Siemens Ag Schutzschaltvorrichtung mit Differenzstromauslöser

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR82612E (fr) * 1962-08-10 1964-03-20 Cie De Construction Electr Dispositif de contacts à déclenchement rapide
DE1413935A1 (de) * 1961-07-05 1969-02-06 Licentia Gmbh Leistungsschalter
FR2038288A1 (de) * 1969-04-05 1971-01-08 Bbc Brown Boveri & Cie
DE2132780A1 (de) * 1971-07-01 1973-01-11 Siemens Ag Schutzschalter, insbesondere leitungsschutzschalter
FR2291603A1 (fr) * 1974-11-15 1976-06-11 Saparel Dispositif de protection contre les surcharges de courant

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1413935A1 (de) * 1961-07-05 1969-02-06 Licentia Gmbh Leistungsschalter
FR82612E (fr) * 1962-08-10 1964-03-20 Cie De Construction Electr Dispositif de contacts à déclenchement rapide
FR2038288A1 (de) * 1969-04-05 1971-01-08 Bbc Brown Boveri & Cie
DE2132780A1 (de) * 1971-07-01 1973-01-11 Siemens Ag Schutzschalter, insbesondere leitungsschutzschalter
FR2291603A1 (fr) * 1974-11-15 1976-06-11 Saparel Dispositif de protection contre les surcharges de courant

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19935662A1 (de) * 1999-07-29 2001-02-01 Abb Patent Gmbh Elektromagnetischer Auslöser
EP1073083A3 (de) * 1999-07-29 2002-08-21 ABB PATENT GmbH Elektromagnetischer Auslöser
WO2003094188A1 (en) * 2002-05-01 2003-11-13 Eaton Corporation Adjustable magnetic trip assembly for circuit breaker
CN101556883B (zh) * 2008-03-01 2014-08-06 Abb股份有限公司 开关装置
WO2017148638A1 (de) * 2016-03-03 2017-09-08 Siemens Aktiengesellschaft Auslösevorrichtung und elektromechanisches schutzschaltgerät

Also Published As

Publication number Publication date
ATE92210T1 (de) 1993-08-15
DE3882601D1 (de) 1993-09-02
FR2616584A1 (fr) 1988-12-16
EP0295162B1 (de) 1993-07-28
FR2616584B1 (fr) 1989-09-29
DE3882601T2 (de) 1993-11-04

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