EP0027404A1 - Miniature electric circuit breaker in moulded case - Google Patents

Miniature electric circuit breaker in moulded case Download PDF

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Publication number
EP0027404A1
EP0027404A1 EP19800401404 EP80401404A EP0027404A1 EP 0027404 A1 EP0027404 A1 EP 0027404A1 EP 19800401404 EP19800401404 EP 19800401404 EP 80401404 A EP80401404 A EP 80401404A EP 0027404 A1 EP0027404 A1 EP 0027404A1
Authority
EP
European Patent Office
Prior art keywords
core
sheath
circuit breaker
plunger
coil
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
EP19800401404
Other languages
German (de)
French (fr)
Other versions
EP0027404B1 (en
Inventor
Jean Barral-Baron
Michel Lazareth
François Reynaud
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
Priority to FR7925859A priority Critical patent/FR2468202B1/en
Priority to FR7925859 priority
Application filed by Merlin Gerin SA filed Critical Merlin Gerin SA
Publication of EP0027404A1 publication Critical patent/EP0027404A1/en
Application granted granted Critical
Publication of EP0027404B1 publication Critical patent/EP0027404B1/en
Expired legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00Magnets
    • H01F7/06Electromagnets; Actuators including electromagnets
    • H01F7/08Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16Rectilinearly-movable armatures
    • H01F7/1607Armatures entering the winding
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08Terminals; Connections
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/12Automatic release mechanisms with or without manual release
    • H01H71/24Electromagnetic mechanisms
    • H01H71/2463Electromagnetic mechanisms with plunger type armatures
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00Magnets
    • H01F7/06Electromagnets; Actuators including electromagnets
    • H01F7/08Electromagnets; Actuators including electromagnets with armatures
    • H01F7/081Magnetic constructions
    • H01F2007/083External yoke surrounding the coil bobbin, e.g. made of bent magnetic sheet
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00Contacts
    • H01H1/58Electric connections to or between contacts; Terminals
    • H01H1/5855Electric connections to or between contacts; Terminals characterised by the use of a wire clamping screw or nut
    • H01H2001/5861Box connector with a collar or lug for clamping internal rail and external conductor together by a tightening screw
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/12Automatic release mechanisms with or without manual release
    • H01H71/24Electromagnetic mechanisms
    • H01H71/2454Electromagnetic mechanisms characterised by the magnetic circuit or active magnetic elements

Abstract

1. Miniature electric circuit breaker with moulded casing comprising : - a cut off chamber (30) enclosed by two electrodes (38, 40) to guide the arc, disposed to pick up an arc drawn between contacts (20, 22) when they get separated, - an electromagnetic trip device (28) having a coil (68) and a plunger (74) controlling a release latch (58) when a fault occurs to induce the automatic opening of said contacts (20, 22), - an actuation rod (80) coupled to the plunger (74) and acting on a rotating moving contact (20) to accelerate the shift of the moving contact (20) toward the opening position when the coil (68) of said trip device (28) is excited, - and a sleeve (70) to guide in translation the plunger (74), characterized in that said plunger (74) presents a general form of a barrel or a rib accommodating gaps for the compressed air passage by the piston effect generated when the plunger (74) moves quickly inside the sleeve (70) and allowing a limited motion of the plunger rotation inside the sleeve (70) during the opening travel of the rotating moving contact (20).

Description

  • The invention relates to a miniature circuit breaker with molded housing comprising:
    • - a breaking chamber framed by two arc guiding electrodes, arranged to pick up an arc drawn between contacts during their separation,
    • - an electromagnetic trip unit with a coil and a plunger core controlling a trip lock when a fault occurs to cause said contacts to open automatically,
    • - an actuating rod coupled to the plunger core to accelerate the movement of the movable contact to the open position during excitation of the trigger coil,
    • - And a guide sleeve in translation of the plunger core.
  • Circuit breakers of the type mentioned are known (French patents Nos. 2,344,949 and 2,344,950), which advantageously replace protection fuses in low voltage circuits for the distribution of electrical energy. These circuit breakers are mass produced and the present invention aims to reduce their manufacturing cost and increase their performance, in particular the breaking capacity. In the aforementioned known circuit breakers, the plunger core of the electromagnetic trip unit exerts traction on the movable contact to accelerate its movement and increase the speed of breaking of the arc drawn between the contacts.
  • The purpose of the present invention is to increase the speed of response and the action of the electromagnetic trip device and it is characterized in that the said plunger core has passages on its periphery for compressed air through the piston effect generated during rapid displacement of the plunger core inside the sheath, and is shaped to allow a limited pivoting movement of the core inside the sheath during the opening stroke of the pivoting movable contact.
  • The air passages provided on the plunger core prevent braking by piston effect and the barrel shape allows limited pivoting inside the sleeve and compensates for variations in positioning during pivoting of the movable contact.
  • According to another development of the invention, the fixed core of the electromagnetic trip device is secured to the carcass by a circlip extending by an elastic blade acting on the latch of the circuit breaker mechanism. The same part performs the double function of locking the fixed core and of recalling the lock, which allows a reduction in the cost of manufacturing and mounting the circuit breaker.
  • The arrangement of the elements constituting the electromagnetic trip device inside a sheath lends itself to a simplification of the assembly by providing according to another development of the invention a snap-fastening of the sheath on the fixed core after insertion of the plunger core and the spring of reminder inside the sheath. This snap-fastening maintains the assembled elements which can subsequently be placed inside the release coil in a single block.
  • According to another development of the invention, the current supply lines of the fixed and mobile contacts are shaped man.ière to increase the loop effect and blowing magnetic arc toward the arc chute . For this purpose, the connection conductor of the fixed contact to the connection area bypasses the terminal clamp by making a loop oriented in the direction of the front face carrying the handle of the circuit breaker. This increase in the loop effect is obtained without increasing the external dimensions of the molded housing by particularly simple means.
  • Other advantages and characteristics will emerge more clearly from the following description of a mode of implementation of the invention; given by way of nonlimiting example and represented in the appended drawings, in which:
    • FIG. 1 is a schematic view in axial section of the circuit breaker according to the invention;
    • Figure 2 is a partial view, on an enlarged scale, of FIG. 1, showing the electromagnetic trigger;
    • FIG. 3 is an exploded view of the electromagnetic trip device according to FIG. 2;
    • Figures 4, 5 and 6 are respectively sections along the lines IV-IV, VV and VI-VI of FIG. 3;
    • Figure 7 is a partial view, on an enlarged scale, of 'fig. 1, showing the connection terminal on the side of the fixed contact;
    • Figure 8 is a section along line VIII-VIII of FIG. 7.
  • In the figures, a pole of a miniature electric circuit breaker comprises a housing 10 made of a molded insulating material having on the front face 12 a handle 14 for operating the circuit breaker and on the two narrow lateral faces of the connection terminals 16, 18 of breaker input and output. Inside the housing 10 are housed a movable contact 20 and a fixed contact 22, connected by a loop conductor 24 to the terminal 16. The movable contact 20 is controlled by a control mechanism which will be described in detail below. . In the housing 10 are also housed a thermal trip device formed by a bimetallic strip 26 and an electromagnetic trip device 28 capable of causing in the event of an overload or short circuit an automatic opening of the contacts 20, 22. In the lower part of the case 10 is arranged a breaking chamber 30 constituted by a stack of sheets 32 which extend parallel to the face rear 34 of the housing 10. Fixing claws 36, integral with the rear face 34, are capable of cooperating with a symmetrical DIN rail for support in a manner well known to specialists.
  • The movable contact 20 extends substantially perpendicular to the plane of the sheets 32, so as to draw an arc between the contacts 20, 22 during their separation, the initial direction of which is substantially parallel to the sheets 32. The connection conductor 24 is extended beyond the fixed contact 22 to constitute an electrode or arc ring 38, which ends with a plate delimiting the breaking chamber 30..The opposite side of the breaking chamber 30.is delimited by an electrode 40, electrically connected as described below to the output terminal 18.
  • The mechanism for controlling the mobile contact 20 is described in detail in French Patent No. 2,344,949, and will only be summarized hereinafter. The movable contact 20 is articulated on a contact arm 44 pivotally mounted on a rocker arm 46 attacked by a toggle switch 48, one of the links of which is formed by an extension 50 of the lever 14. A pivoting of the lever 14 causes the extension or breaking of the toggle joint 48 and by pivoting of the rocker arm 46 the spacing or the bringing together of the movable contact 20 of the fixed contact 22. A trigger lever 52, pivotally mounted on an axis 54, cooperates with the end 56 of the contact arm 44, so as to secure the latter to the rocker arm 46. A latch 58 is rotatably mounted on a pivot 60 and has a nose 62 for hooking the end of the trigger lever 52. In the locking position, shown in fig. l, the trip lever 52 is retained by the latch 58 in the active position allowing transmission of the pivoting movement of the lever 14 to the movable contact 20 for manual control of opening and closing of the circuit breaker. An automatic opening of the contacts 20, 22 is caused by a pivoting in the direction of the needles of a watch of the lock 58, which releases the trigger lever 52, the latter pivoting in the trigonometric direction to release the end 56 of the contact arm 44. Under the action of a spring (not shown) the arm of contact pivots to the open position. The latch 58 is actuated by the deflection of the bimetallic strip 26 in the event of an overload and by the electromagnetic trip device 28 when a short circuit appears.
  • Referring more particularly to FIGS. 2 to 6, it can be seen that the electromagnetic trip device 28 comprises a carcass 64 made of a ferromagnetic material which surrounds a coil 68 mounted on a tubular insulating sheath 70 closed at one of its ends by a bottom 72 Inside the sheath in the form of an insulating sleeve 70 is slidably mounted a plunger core 74 and a fixed magnetic core 76. The general shape of the plunger core 74 is that of a barrel or an ogive whose cross section median is in the form of a square with rounded edges 78 (see fig. 4). In the inserted position of the plunger core in the sheath 70, the edges 78 constitute guide lines in contact with the internal wall of the sheath 70, the intervals remaining between the sides of the square of the plunger core 74 and the periphery of the sheath 70 delimiting orifices of air passage. It is easy to understand that the plunger core 74 acting like a piston moving in the cylinder 70 is not braked in its movement by the compression of air which can escape freely through the intervals formed between the piston and the cylinder. The conical shape of the plunger core 74 allows limited pivoting inside the sheath 70. To the plunger core 74 is secured an actuating rod 80, which passes through an orifice formed in the bottom 72 of the sheath 70 and cooperates with the contact arm 44. The plunger core 74 cooperates on its opposite side with a pusher 82, which passes through an orifice 84 formed in the fixed core 76 and is urged to bear against the plunger core 74 by a spring 86. The end of the pusher 82 cooperates with latch 58 to move the latter in position unlocking during an excitation of the electromagnetic trip device 28. The fixed core 76 has on its outer periphery cells 88 in which snap in position assembled bosses 90 formed on the sheath 70. The fixed core 76 also has a collar 91 passing through an orifice 92 formed in the carcass 64 and receiving a retaining circlip 94, so as to rigidly secure the fixed core 76 to the carcass 64. The circlip 94 is constituted by the end of a leaf spring 96 in the form hairpin whose opposite end cooperates with the lock 58 to urge the latter in the locked position.
  • The coil 68 is electrically connected on the one hand by a braid 98 to the movable contact 20, and on the other hand by a braid 100 to the bimetallic strip 26 whose opposite end is fixed to the carcass 64, itself connected to the terminal 18. The plate 40 delimiting the breaking chamber 30 is fixed to the carcass 64 on the side of the contact arm 44. It is easy to understand that in the closed position of the contacts 20 ; 22, the current flows from terminal 16 through contacts 22, 20, the braid 98, the coil 68, the braid 100, the bimetallic strip 26 towards terminal 18. In the event of an overload or short-circuit, the latch 58 is actuated respectively by the bimetallic strip 26 or the electromagnetic trip 28, so as to cause the automatic opening of the contacts 20, 22. The arc drawn between the separate contacts 20, 22 moves along the horn 38 and switches on the plate 40 by switching off the coil 68 and the bimetallic strip 26 in a manner well known to specialists. Advantageously refer to the aforementioned French patent for a more detailed description of the operation of the circuit breaker. It suffices to recall that the more particularly square polygonal section of the plunger core 74 avoids any piston effect capable of slowing the movement of the plunger core 74. The pointed shape of the plunger core 74 allows pivoting and therefore inclination of the rod actuator 80 which is positioned to exert on the movable contact 20 a tensile force in the direction of opening of the movable contact 20.
  • The sleeve 70 with bosses 90 facilitates the mounting of the electromagnetic trip device which is carried out as follows:
    • In the interior of the sheath 70 are successively inserted the plunger core 74 with its actuating rod 80, the pusher 82, the return spring 86 and the fixed core 76. At the end of the driving stroke of the fixed core 76 to the 'against the spring 86, the bosses 90 snap into the cells 88 to secure the fixed core, forming a shutter, to the sheath 70 of sheathing. This sub-assembly can be preassembled and during assembly of the circuit breaker installed in a single block by the insertion of the collar 91 in the orifice formed in the carcass 64. The installation of the circlip 94 secures this sub-assembly to the carcass 64. When the electromagnetic trip device 28 is placed in the housing 10, the bottom 72 of the sheath 70 comes to bear stops 102 integral with the housing 10. The positioning and positioning of the return spring 96 s '' perform automatically by fitting the circlip 94.
  • With particular reference to FIGS. 7 and 8, it can be seen that the terminal 16 adjacent to the fixed contact 22 is of the type embedded inside the housing 10 and includes a stirrup 104 surrounding a pad 106 formed by the end of the conductor 24 carrying the fixed contact 22. The upper branch 108 of the bracket 104 has a threaded bore receiving a clamping screw 110 bearing on the upper face of the connection pad 106. Such terminals are well known per se and it is easy to understand that during the screwing of the screw 110 a conductor 112 inserted between the stirrup 104 and the pad 106, is clamped against the latter. The pad 106 is substantially at the level of the fixed contact 22 and the connection conductor 24 extends inside the socket 114 for housing the terminal 16, bypassing the upper edge 108 of the stirrup 104, such so that the arc drawn between the contacts 20, 22 is from its appearance subjected to an intense loop effect. The screw 110 passes through an orifice formed in the upper part of the loop formed by the conductor 24. The stirrup 104 provided with its screw 110 is mounted on the fixed contact 22.

Claims (10)

1. Miniature electric circuit breaker with molded case comprising:
a breaking chamber (30) framed by two electrodes (38, 40) for guiding the arc, arranged to pick up an arc drawn between contacts (20, 22) during their separation,
- an electromagnetic trip unit (28) with a coil (68) and a plunger core (74) controlling a latch (58) for tripping when a fault occurs to cause said contacts to open automatically,
an actuating rod (80) coupled to the plunger core (74) to accelerate the displacement of the movable contact (20) towards the open position when the coil (68) of the trigger (28) is excited,
- And a sheath (70) for guiding in translation of the plunger core (74), characterized in that said plunger core (74) has, on its periphery, passages for compressed air by the piston effect generated during movement rapid of the plunger core inside the sheath, and is shaped to allow a limited pivoting movement of the core inside the sheath (70) during the opening stroke of the pivoting movable contact (20).
2. An electrical circuit breaker according to claim 1, characterized in that said sheath (70) is of cylindrical internal shape, the external contour of the core (74) being of polygonal shape, so as to provide passages between the edges of the polygon of the core and the circular outline of the sheath.
3. An electric circuit breaker according to claim 1 or 2, characterized in that the plunger core (74) is in the shape of a barrel to allow said limited pivoting movement inside the sheath (70).
4. Miniature electric circuit breaker with molded case comprising a breaking chamber (30) framed by two elements arc guide trodes (38, 40) arranged to pick up an arc drawn between contacts (20, 22) during their separation, an electromagnetic trip device (28) having a coil (68) and, arranged inside of the coil, a fixed core (76) and a movable plunger core (74) controlling a latch (58) for triggering when a fault occurs to cause the automatic opening of said contacts (20, 22), characterized by the fact that said fixed core (76) is subject to the carcass (64) of said coil (68) by an elastic piece (96) shaped as a spring exerting a moment of return on said latch (58).
5. Electric circuit breaker according to claim 4, characterized by a spring (96) with 1-return core of said latch (58) having one end shaped as a circlip (94) for fixing said fixed core (76) to the carcass (64) of the coil (68).
6. An electrical circuit breaker according to any one of the preceding claims, with an electromagnetic trip device (28) comprising a coil (68) surrounding a cylindrical sheath (70) inside which are disposed a sliding plunger core (74), a fixed core. (76) and a spring (86) for returning said plunger core, characterized in that said cores (74, 76), said spring (86) and said sheath (70) constitute a sub-assembly capable of being assembled to outside and to be inserted as a single block in said coil (68).
7. An electrical circuit breaker according to claim 6, characterized in that said sheath (70) has a fixed bottom (72) and an open bottom closed in the assembled position of said subassembly by said fixed core (76) secured to said sheath.
8. An electric circuit breaker according to claim 7, characterized in that said fixed core (76) and said sheath (70) comprise means (90) for fastening by snap-fastening.
9. Miniature electric circuit breaker with narrow molded case (10) comprising a control handle (14) arranged on the front face of the case, input and output terminals (16, 18) arranged on the narrow side faces of the box. tier, a fixed contact (22) adjacent to the input terminal (16) and cooperating with a movable contact (20) to draw an initial arc substantially parallel to said front face and a breaking chamber (30) adjacent to the face rear of the housing to which the initial arc is blown by a loop effect, characterized in that said input terminal (16) of the submerged type has a connection pad (106) substantially in line with said fixed contact (22) and means (110) for clamping the conductor (112) of external connection on said pad (106) projecting inside said housing in the direction of the front face with respect to said pad, said fixed contact (22) being connected to said area (106) by a conductor (24) of contiguous loop connection running towards said front face said clamping means (110).
10. An electrical circuit breaker according to claim 9, characterized by a clamp (104) for tightening surrounding said connection pad (106) and mounted to slide in a direction perpendicular to said front face inside a rectangular cell (114). of said housing, said connection conductor (24) extending along the internal contour of said cell by presenting from the connection area (106) a branch extending along the narrow lateral face of the housing in the direction of the front face, a transverse branch parallel to said front face and an internal branch which extends beyond the fixed contact (22) towards the rear face of the housing.
EP19800401404 1979-10-16 1980-10-03 Miniature electric circuit breaker in moulded case Expired EP0027404B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7925859A FR2468202B1 (en) 1979-10-16 1979-10-16 Miniature electric circuit breaker with molded housing
FR7925859 1979-10-16

Publications (2)

Publication Number Publication Date
EP0027404A1 true EP0027404A1 (en) 1981-04-22
EP0027404B1 EP0027404B1 (en) 1984-07-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800401404 Expired EP0027404B1 (en) 1979-10-16 1980-10-03 Miniature electric circuit breaker in moulded case

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EP (1) EP0027404B1 (en)
DE (1) DE3068610D1 (en)
ES (1) ES8105890A1 (en)
FR (1) FR2468202B1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0168596A2 (en) * 1984-06-13 1986-01-22 Asea Brown Boveri Aktiengesellschaft Connecting clamp and method of making a connecting clamp
WO1987004850A1 (en) * 1986-01-31 1987-08-13 Jakob Rothenberger Multi-chamber magnetic distributing valve
AU579677B2 (en) * 1984-11-02 1988-12-01 Heinemann Electric (South Africa) Limited Circuit breaker
EP0335774A1 (en) * 1988-03-30 1989-10-04 Hager Electro S.A. Tripping magnet for a circuit breaker
EP0477746A2 (en) * 1990-09-27 1992-04-01 Hella KG Hueck & Co. Electromagnetic actuator, especially for motor vehicles
EP0537090A1 (en) * 1991-10-10 1993-04-14 Schneider Electric Sa Electric circuit breaker with insertion of extra-turns in the magnetic trip mechanism winding
WO1995017000A1 (en) * 1993-12-15 1995-06-22 United Technologies Automotive, Inc. Solenoid

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008030453A1 (en) * 2008-06-26 2010-01-14 Hydac Electronic Gmbh actuator

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2291599A (en) * 1939-12-16 1942-08-04 William A Ray Solenoid
GB576775A (en) * 1942-12-21 1946-04-18 Landis & Gyr Sa Improvements in automatic circuit breakers
DE1173582B (en) * 1963-04-18 1964-07-09 Licentia Gmbh Magnetic Ausloesesystem for switching devices
US3295079A (en) * 1964-12-03 1966-12-27 Honeywell Inc Solenoid actuator assembly having a unitary spring clip for the plunger
DE1564088A1 (en) * 1966-09-22 1970-01-15 Erich Herion AC magnet with a partially into the cavity of the solenoid protruding magnetic core and a surrounding the magnet coil yoke, in particular for solenoid valves for controlling air pressure actuated devices
US3727160A (en) * 1972-03-24 1973-04-10 Automatic Switch Co Retaining clip for a solenoid assembly
DE2330839A1 (en) * 1973-06-16 1975-01-09 Harting Elektro W Simply constructed armature bearings - by injecting a plastic into a groove in the armature as guide ring in the bearing region
DE2531215A1 (en) * 1975-07-12 1977-02-03 Bbc Brown Boveri & Cie Solenoid magnetic trip for protective circuit breakers - has coil former in one piece with moving and stationery cores and positively held in iron yoke
FR2344949A1 (en) * 1976-03-15 1977-10-14 Merlin Gerin Low voltage miniature contact breaker for domestic use - has bimetal strips and solenoid for release and laminated stack for arc blowout

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2291599A (en) * 1939-12-16 1942-08-04 William A Ray Solenoid
GB576775A (en) * 1942-12-21 1946-04-18 Landis & Gyr Sa Improvements in automatic circuit breakers
DE1173582B (en) * 1963-04-18 1964-07-09 Licentia Gmbh Magnetic Ausloesesystem for switching devices
US3295079A (en) * 1964-12-03 1966-12-27 Honeywell Inc Solenoid actuator assembly having a unitary spring clip for the plunger
DE1564088A1 (en) * 1966-09-22 1970-01-15 Erich Herion AC magnet with a partially into the cavity of the solenoid protruding magnetic core and a surrounding the magnet coil yoke, in particular for solenoid valves for controlling air pressure actuated devices
US3727160A (en) * 1972-03-24 1973-04-10 Automatic Switch Co Retaining clip for a solenoid assembly
DE2330839A1 (en) * 1973-06-16 1975-01-09 Harting Elektro W Simply constructed armature bearings - by injecting a plastic into a groove in the armature as guide ring in the bearing region
DE2531215A1 (en) * 1975-07-12 1977-02-03 Bbc Brown Boveri & Cie Solenoid magnetic trip for protective circuit breakers - has coil former in one piece with moving and stationery cores and positively held in iron yoke
FR2344949A1 (en) * 1976-03-15 1977-10-14 Merlin Gerin Low voltage miniature contact breaker for domestic use - has bimetal strips and solenoid for release and laminated stack for arc blowout

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0168596A2 (en) * 1984-06-13 1986-01-22 Asea Brown Boveri Aktiengesellschaft Connecting clamp and method of making a connecting clamp
EP0168596A3 (en) * 1984-06-13 1988-11-17 Asea Brown Boveri Aktiengesellschaft Connecting clamp and method of making a connecting clamp
AU579677B2 (en) * 1984-11-02 1988-12-01 Heinemann Electric (South Africa) Limited Circuit breaker
WO1987004850A1 (en) * 1986-01-31 1987-08-13 Jakob Rothenberger Multi-chamber magnetic distributing valve
EP0335774A1 (en) * 1988-03-30 1989-10-04 Hager Electro S.A. Tripping magnet for a circuit breaker
FR2629633A1 (en) * 1988-03-30 1989-10-06 Hager Electro Magnetic trigger for circuit breaker
EP0477746A2 (en) * 1990-09-27 1992-04-01 Hella KG Hueck & Co. Electromagnetic actuator, especially for motor vehicles
EP0477746A3 (en) * 1990-09-27 1993-01-20 Hella Kg Hueck & Co. Electromagnetic actuator, especially for motor vehicles
EP0537090A1 (en) * 1991-10-10 1993-04-14 Schneider Electric Sa Electric circuit breaker with insertion of extra-turns in the magnetic trip mechanism winding
FR2682533A1 (en) * 1991-10-10 1993-04-16 Merlin Gerin Electric circuit breaker with insertion of magnetic trigger spiers.
WO1995017000A1 (en) * 1993-12-15 1995-06-22 United Technologies Automotive, Inc. Solenoid
US5546064A (en) * 1993-12-15 1996-08-13 United Technologies Automotive, Inc. Solenoid with plunger rod

Also Published As

Publication number Publication date
FR2468202B1 (en) 1986-03-07
FR2468202A1 (en) 1981-04-30
ES495920A0 (en) 1981-06-16
ES495920D0 (en)
DE3068610D1 (en) 1984-08-23
EP0027404B1 (en) 1984-07-18
ES8105890A1 (en) 1981-06-16

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