EP0076719A1 - Mehrpoliger Schutzschalter mit auswechselbarer Auslöseeinheit - Google Patents

Mehrpoliger Schutzschalter mit auswechselbarer Auslöseeinheit Download PDF

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Publication number
EP0076719A1
EP0076719A1 EP82401699A EP82401699A EP0076719A1 EP 0076719 A1 EP0076719 A1 EP 0076719A1 EP 82401699 A EP82401699 A EP 82401699A EP 82401699 A EP82401699 A EP 82401699A EP 0076719 A1 EP0076719 A1 EP 0076719A1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
connection
trip unit
block
trip
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
EP82401699A
Other languages
English (en)
French (fr)
Other versions
EP0076719B1 (de
Inventor
Alain Gerbert-Gaillard
Robert Morel
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.)
Merlin Gerin SA
Original Assignee
Merlin Gerin 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 Merlin Gerin SA filed Critical Merlin Gerin SA
Publication of EP0076719A1 publication Critical patent/EP0076719A1/de
Application granted granted Critical
Publication of EP0076719B1 publication Critical patent/EP0076719B1/de
Expired 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
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H71/7409—Interchangeable elements
    • 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

Definitions

  • the invention relates to an electric circuit breaker, in particular with a molded case, having a circuit breaker block for housing the breaking contacts and the control mechanism for said contacts and a removable tripping block for housing the thermal and / or magnetic tripping elements associated with different poles for controlling the triggering of the mechanism in the event of overload and / or fault, said trip unit comprising for each pole a section of power conductor electrically connected in series by a disconnectable connection to an associated section of conductor of the circuit breaker block containing the cut-off contacts, said tripping elements reacting to overcurrents and short-circuit of the currents flowing through said conductors.
  • the object of the present invention is to remedy these drawbacks and to allow the production of a circuit breaker with an easily removable trip unit and with reduced overall dimensions.
  • the circuit breaker according to the invention is characterized in that the disconnectable connection of each conductor has a connection area making an acute angle with the general direction of said conductors in the circuit breaker.
  • connection pads allows an oblique arrangement of the clamping screws and the screw access holes which are perpendicular to the pads. These screws no longer open on the front face of the circuit breaker crossing the entire height of the housing, but on the side face carrying the connection terminals. This reduces the overall length at the expense of the overall height, but the space available in this area is sufficient to accommodate the inclined areas under the mechanism of the trigger block.
  • connection screws advantageously simultaneously secure the trip unit block on the circuit breaker block, the connection pads of one of the blocks being resiliently mounted to compensate for positioning faults and allow good contact of the pads of the three poles of the circuit breaker .
  • the inclined pads are arranged in the lower part of the trigger block to facilitate access to these screws and ensure good fixing of the block.
  • the section of conductor associated with the trip unit is folded in a loop to cross the magnetic circuit of the electromagnetic trip device and ends with the inclined connection area located below this magnetic circuit. This range comes into contact with the associated range carried by the base of the circuit breaker block when the trip unit is put in place. The connection area is thus transferred under the trip unit and the electrodynamic forces generated in the loop increase the contact pressure of the pads.
  • a multipolar circuit breaker 10 with molded housing for example a three-phase circuit breaker, is constituted by the assembly of a circuit breaker block 12 and a trip block 14 on a base 16 belonging to the circuit breaker block 12.
  • the base 16 carries the connection terminals 18, 20 for input and output of the circuit breaker, capped by removable terminal covers 22, 24.
  • the circuit breaker of generally parallelepipedal shape is provided on its front face 26, opposite the base 16, with a handle control 28.
  • circuit breaker block 12 In the circuit breaker block 12 are housed the three pairs of separable contacts 30, 32 as well as the control mechanism 34, which causes the displacement of the movable contacts 30 in the open and closed position during an operation manual operation of the lever 28 and the automatic opening on a triggering order of a bar 35 of the trigger block 14.
  • the mechanism 34 and the connections between this mechanism 34 and the movable contacts 30 and the trigger block 14 are shown diagrammatically on the Figure 1, such devices being well known to specialists.
  • each pole is inserted in a power conductor 36 which extends between the terminals 18, 20 along the base 16 crossing the trip unit 14, which contains for each pole a thermal trip device 38 and a trip device electromagnetic 40 causing tripping of the circuit breaker respectively in the event of overload and short-circuit.
  • the trip unit 14 is removable and on the same circuit breaker unit can be mounted any one of a range of trip units with different characteristics.
  • the terminals or pads 18 are integral with the trigger block 14 and removed with the latter during disassembly.
  • Each conductor 36 has a connection 42, which can be disconnected in the junction area of the circuit breaker block 12 and the trip block 14, which is broken by the removal of the trip block 14.
  • Such circuit breakers are well known and it is unnecessary to describe them more in detail.
  • the disconnectable connections 42 are arranged in the lower part of the trip unit 14 and each comprises a connection area 44 inclined, for example by an angle close to 45 ° with the general direction of the conductor 36, that is ie from the base 16.
  • the pad 44 belongs to the circuit breaker block 12 or more exactly it is mounted floating on this block while being connected by a strap 46 to the movable contact 30.
  • On pad 44 is tightened, in the mounted position of the trip unit 14, the end 48 of the section 50 of the conductor 36 passing through the trip unit 14.
  • the opposite end of the section 50 is connected to the terminal 18 and the section 50 extends inside the trip unit 14 following a trajectory in loop crossing a U-shaped cylinder head 52 of the circuit magnetic of the electromagnetic trip unit 40. Referring more particularly to FIGS.
  • the width of the section 50 is less than that of the terminal 18, for example by half, so as to clear a passage space for a clamping screw 54.
  • the end 48 is widened to come in front of the pad 44 and the screw 54 passes through aligned orifices provided in the end 48 and the pad 44 before being screwed into a nut 56 carried by the base 16
  • the section 50 is made in tinsel to present a certain flexibility and between the head of the screw 54 and the end 48 is inserted a support tab 58 secured to the cylinder head 52.
  • the cylinder head 52 is rigidly fixed, for example by a screw, not shown, to the housing of the trip unit 14, while the nut 56 is resiliently mounted by a spring 60 on the base 16.
  • the pallet 62 of the electromagnetic trip device is placed opposite the cylinder head 52 while the base of the bimetal 38 is fixed by a screw 64 at the end assembly 48, lug 58.
  • the screw 54 extends perpendicular to the surface 44 while being inclined and opening onto the narrow lateral face of the trigger block 14 on the side of the terminals 18 in an area covered by the cover. terminal 22.
  • the trip unit 14 comprises for each conductor 36 a disconnectable connection 42, that is to say three connections in the envisaged case of the three-pole circuit breaker.
  • the floating mounting of the pads 44 allows effective tightening and good electrical contact on the ends 48 and the legs 58, when the bolts 54 are screwed, 56 despite the inevitable relative positioning defects of the three legs 58. It is clear that after tightening the bolts 54,56, the trigger block 14, the legs 58, the pads 44 and the nuts 56 constitute a rigid assembly fixed to the base 16 by the springs 60 which compensate for the positioning faults of the legs 58.
  • connection pad is used in the description above in its general meaning of contact zone, this pad not necessarily being a rigid flat surface and naturally applying to the contact face of the foils forming the conductor 50.
  • the assembly and disassembly of the trip unit does not require any particular skill or knowledge and can be carried out by the user or the distributor, allowing a reduction in device stocks. Any false maneuver is excluded, the correct tightening of the three screws translates a correct fixing and a good electrical connection. After fitting and possibly sealing the terminal cover, the connection screws are inaccessible. We can consider other means of tightening than screws, the main thing being access to these tightening means from the side face of the circuit breaker housing to reduce the length of the housing.
  • the fixing screw is not necessarily offset laterally, passage through a central orifice of the conductor being possible, by isolating the conductor screw by any suitable means, for example by interposing an insulator or using a screw in insulating material.

Landscapes

  • Breakers (AREA)
  • Switch Cases, Indication, And Locking (AREA)
EP82401699A 1981-10-05 1982-09-20 Mehrpoliger Schutzschalter mit auswechselbarer Auslöseeinheit Expired EP0076719B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8118840 1981-10-05
FR8118840A FR2514195A1 (fr) 1981-10-05 1981-10-05 Disjoncteur multipolaire a bloc declencheur amovible

Publications (2)

Publication Number Publication Date
EP0076719A1 true EP0076719A1 (de) 1983-04-13
EP0076719B1 EP0076719B1 (de) 1985-04-10

Family

ID=9262813

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82401699A Expired EP0076719B1 (de) 1981-10-05 1982-09-20 Mehrpoliger Schutzschalter mit auswechselbarer Auslöseeinheit

Country Status (7)

Country Link
US (1) US4468645A (de)
EP (1) EP0076719B1 (de)
JP (2) JPS58135542A (de)
CA (1) CA1169451A (de)
DE (1) DE3263008D1 (de)
ES (1) ES516082A0 (de)
FR (1) FR2514195A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001013398A1 (en) * 1999-08-18 2001-02-22 Eaton Corporation Circuit breaker with easily installed removable trip unit

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US5844188A (en) * 1996-12-19 1998-12-01 Siemens Energy & Automation, Inc. Circuit breaker with improved trip mechanism
US5894260A (en) * 1996-12-19 1999-04-13 Siemens Energy & Automation, Inc. Thermal sensing bi-metal trip actuator for a circuit breaker
US5866996A (en) * 1996-12-19 1999-02-02 Siemens Energy & Automation, Inc. Contact arm with internal in-line spring
US6087914A (en) * 1996-12-19 2000-07-11 Siemens Energy & Automation, Inc. Circuit breaker combination thermal and magnetic trip actuator
IT1292453B1 (it) 1997-07-02 1999-02-08 Aeg Niederspannungstech Gmbh Gruppo rotante di contatti per interrutttori di alta portata
US5872495A (en) * 1997-12-10 1999-02-16 Siemens Energy & Automation, Inc. Variable thermal and magnetic structure for a circuitbreaker trip unit
DE19819242B4 (de) * 1998-04-29 2005-11-10 Ge Power Controls Polska Sp.Z.O.O. Thermomagnetischer Leistungsschalter
US6114641A (en) * 1998-05-29 2000-09-05 General Electric Company Rotary contact assembly for high ampere-rated circuit breakers
US6087913A (en) * 1998-11-20 2000-07-11 General Electric Company Circuit breaker mechanism for a rotary contact system
US6037555A (en) * 1999-01-05 2000-03-14 General Electric Company Rotary contact circuit breaker venting arrangement including current transformer
US6166344A (en) * 1999-03-23 2000-12-26 General Electric Company Circuit breaker handle block
US6262872B1 (en) 1999-06-03 2001-07-17 General Electric Company Electronic trip unit with user-adjustable sensitivity to current spikes
US6268991B1 (en) 1999-06-25 2001-07-31 General Electric Company Method and arrangement for customizing electronic circuit interrupters
US6218917B1 (en) 1999-07-02 2001-04-17 General Electric Company Method and arrangement for calibration of circuit breaker thermal trip unit
US6188036B1 (en) 1999-08-03 2001-02-13 General Electric Company Bottom vented circuit breaker capable of top down assembly onto equipment
US6710988B1 (en) 1999-08-17 2004-03-23 General Electric Company Small-sized industrial rated electric motor starter switch unit
US6252365B1 (en) 1999-08-17 2001-06-26 General Electric Company Breaker/starter with auto-configurable trip unit
US6175288B1 (en) 1999-08-27 2001-01-16 General Electric Company Supplemental trip unit for rotary circuit interrupters
US6396369B1 (en) 1999-08-27 2002-05-28 General Electric Company Rotary contact assembly for high ampere-rated circuit breakers
US6232570B1 (en) 1999-09-16 2001-05-15 General Electric Company Arcing contact arrangement
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US6229413B1 (en) 1999-10-19 2001-05-08 General Electric Company Support of stationary conductors for a circuit breaker
US6317018B1 (en) 1999-10-26 2001-11-13 General Electric Company Circuit breaker mechanism
US6232856B1 (en) 1999-11-02 2001-05-15 General Electric Company Magnetic shunt assembly
US6377144B1 (en) 1999-11-03 2002-04-23 General Electric Company Molded case circuit breaker base and mid-cover assembly
EP1098343B1 (de) 1999-11-03 2005-09-21 AEG Niederspannungstechnik GmbH & Co. KG Drehkontaktanordnung für Schutzschalter
US6300586B1 (en) 1999-12-09 2001-10-09 General Electric Company Arc runner retaining feature
US6310307B1 (en) 1999-12-17 2001-10-30 General Electric Company Circuit breaker rotary contact arm arrangement
US6184761B1 (en) 1999-12-20 2001-02-06 General Electric Company Circuit breaker rotary contact arrangement
US6172584B1 (en) 1999-12-20 2001-01-09 General Electric Company Circuit breaker accessory reset system
US6215379B1 (en) 1999-12-23 2001-04-10 General Electric Company Shunt for indirectly heated bimetallic strip
US6281461B1 (en) 1999-12-27 2001-08-28 General Electric Company Circuit breaker rotor assembly having arc prevention structure
US6346869B1 (en) 1999-12-28 2002-02-12 General Electric Company Rating plug for circuit breakers
US6211758B1 (en) 2000-01-11 2001-04-03 General Electric Company Circuit breaker accessory gap control mechanism
US6239677B1 (en) 2000-02-10 2001-05-29 General Electric Company Circuit breaker thermal magnetic trip unit
US6429759B1 (en) 2000-02-14 2002-08-06 General Electric Company Split and angled contacts
US6281458B1 (en) 2000-02-24 2001-08-28 General Electric Company Circuit breaker auxiliary magnetic trip unit with pressure sensitive release
US6313425B1 (en) 2000-02-24 2001-11-06 General Electric Company Cassette assembly with rejection features
US6404314B1 (en) 2000-02-29 2002-06-11 General Electric Company Adjustable trip solenoid
US6204743B1 (en) 2000-02-29 2001-03-20 General Electric Company Dual connector strap for a rotary contact circuit breaker
US6346868B1 (en) 2000-03-01 2002-02-12 General Electric Company Circuit interrupter operating mechanism
US6448521B1 (en) 2000-03-01 2002-09-10 General Electric Company Blocking apparatus for circuit breaker contact structure
US6340925B1 (en) 2000-03-01 2002-01-22 General Electric Company Circuit breaker mechanism tripping cam
US6379196B1 (en) 2000-03-01 2002-04-30 General Electric Company Terminal connector for a circuit breaker
US6366438B1 (en) 2000-03-06 2002-04-02 General Electric Company Circuit interrupter rotary contact arm
US6211757B1 (en) 2000-03-06 2001-04-03 General Electric Company Fast acting high force trip actuator
US6459349B1 (en) 2000-03-06 2002-10-01 General Electric Company Circuit breaker comprising a current transformer with a partial air gap
US6496347B1 (en) 2000-03-08 2002-12-17 General Electric Company System and method for optimization of a circuit breaker mechanism
US6429659B1 (en) 2000-03-09 2002-08-06 General Electric Company Connection tester for an electronic trip unit
US6218919B1 (en) 2000-03-15 2001-04-17 General Electric Company Circuit breaker latch mechanism with decreased trip time
US6366188B1 (en) 2000-03-15 2002-04-02 General Electric Company Accessory and recess identification system for circuit breakers
US6232859B1 (en) 2000-03-15 2001-05-15 General Electric Company Auxiliary switch mounting configuration for use in a molded case circuit breaker
US6459059B1 (en) 2000-03-16 2002-10-01 General Electric Company Return spring for a circuit interrupter operating mechanism
US6421217B1 (en) 2000-03-16 2002-07-16 General Electric Company Circuit breaker accessory reset system
US6559743B2 (en) 2000-03-17 2003-05-06 General Electric Company Stored energy system for breaker operating mechanism
US6586693B2 (en) 2000-03-17 2003-07-01 General Electric Company Self compensating latch arrangement
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US6388213B1 (en) 2000-03-17 2002-05-14 General Electric Company Locking device for molded case circuit breakers
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US6479774B1 (en) 2000-03-17 2002-11-12 General Electric Company High energy closing mechanism for circuit breakers
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US6373357B1 (en) 2000-05-16 2002-04-16 General Electric Company Pressure sensitive trip mechanism for a rotary breaker
US6995640B2 (en) * 2000-05-16 2006-02-07 General Electric Company Pressure sensitive trip mechanism for circuit breakers
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Publication number Priority date Publication date Assignee Title
CH319019A (de) * 1954-05-12 1957-01-31 Sprecher & Schuh Ag Motorschutzschalter
US3265837A (en) * 1964-10-22 1966-08-09 Gen Electric Electric circuit breaker provide with an improved terminal strap for mounting a bimetal element
DE1513257A1 (de) * 1965-03-16 1969-08-14 Licentia Gmbh Selbstschalter mit einer thermischen Ausloeseeinrichtung und einer an dem Selbstschalter loesbar befestigten magnetischen Ausloeseeinheit

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Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH319019A (de) * 1954-05-12 1957-01-31 Sprecher & Schuh Ag Motorschutzschalter
US3265837A (en) * 1964-10-22 1966-08-09 Gen Electric Electric circuit breaker provide with an improved terminal strap for mounting a bimetal element
DE1513257A1 (de) * 1965-03-16 1969-08-14 Licentia Gmbh Selbstschalter mit einer thermischen Ausloeseeinrichtung und einer an dem Selbstschalter loesbar befestigten magnetischen Ausloeseeinheit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001013398A1 (en) * 1999-08-18 2001-02-22 Eaton Corporation Circuit breaker with easily installed removable trip unit

Also Published As

Publication number Publication date
ES8306424A1 (es) 1983-06-01
FR2514195B1 (de) 1983-11-18
DE3263008D1 (en) 1985-05-15
JPH0126026Y2 (de) 1989-08-03
EP0076719B1 (de) 1985-04-10
JPS63176252U (de) 1988-11-15
CA1169451A (en) 1984-06-19
US4468645A (en) 1984-08-28
FR2514195A1 (fr) 1983-04-08
JPS58135542A (ja) 1983-08-12
ES516082A0 (es) 1983-06-01

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