US3469215A - Multi-pole electromagnetic relay with convertible contacts - Google Patents

Multi-pole electromagnetic relay with convertible contacts Download PDF

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Publication number
US3469215A
US3469215A US640577A US3469215DA US3469215A US 3469215 A US3469215 A US 3469215A US 640577 A US640577 A US 640577A US 3469215D A US3469215D A US 3469215DA US 3469215 A US3469215 A US 3469215A
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United States
Prior art keywords
carrier
contacts
relay
housing
base
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Expired - Lifetime
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US640577A
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English (en)
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Antonio Brovedan
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Pirelli and C SpA
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Pirelli SpA
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/0006—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches
    • H01H11/0012—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches for converting normally open to normally closed switches and vice versa
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/546—Contact arrangements for contactors having bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H01H1/30—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting within supporting guides
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/20—Movable parts of magnetic circuits, e.g. armature movable inside coil and substantially lengthwise with respect to axis thereof; movable coaxially with respect to coil
    • H01H50/22—Movable parts of magnetic circuits, e.g. armature movable inside coil and substantially lengthwise with respect to axis thereof; movable coaxially with respect to coil wherein the magnetic circuit is substantially closed
    • H01H2050/225—Movable parts of magnetic circuits, e.g. armature movable inside coil and substantially lengthwise with respect to axis thereof; movable coaxially with respect to coil wherein the magnetic circuit is substantially closed with yoke and armature formed by identical stacked laminates, e.g. punched in one and the same tool
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/08—Indicators; Distinguishing marks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/163—Details concerning air-gaps, e.g. anti-remanence, damping, anti-corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/30—Mechanical arrangements for preventing or damping vibration or shock, e.g. by balancing of armature
    • H01H50/305—Mechanical arrangements for preventing or damping vibration or shock, e.g. by balancing of armature damping vibration due to functional movement of armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/44—Magnetic coils or windings
    • H01H50/46—Short-circuited conducting sleeves, bands, or discs

Definitions

  • ABSTRACT F THE DISCLOSURE An electrical relay with contacts which convert from a normally opened condition to a normally closed condition, and vice versa, by removing spring loaded contact units from one recess zone of a moveable contact carrier and reinserting the contact unit in another zone.
  • the present invention relates to multi-pole electromagnetic relays with convertible contacts, and more particularly it concerns a relay having movable electric contacts which may be manually engaged with and disengaged from, a contact carrier, and which may have their position changed from a normally opened condition to a normally closed condition.
  • Electromagnetic relays with convertible contacts have, in general, a large number of poles, and are constituted by a housing incorporating stationary contacts and connesting clamps. Located inside the housing is an electromagnet which controls a movable contact carrier.
  • these relays incorporate a suitable' structure which is assembled in the carrier and which, by means of a change of position, for instance a rotation about an axis, permits the contacts to become disposed in normally opened or in normally closed position.
  • the relay is composed of several pieces, the machining and the assembling of which is rather difiicult.
  • the present invention provides an improved multipole electromagnetic relay of the type in which the conversion of the contacts does not involve the above indicated drawbacks; and which conversion may be easily carried out manually without disconnecting the relay from the electric circuits associated therewith.
  • the present invention further provides an electromagnetic relay which has convertible contacts, which is composed of a small number of component parts, which ice has a reduced size and which may be easily assembled and disassembled without the need of any special tool.
  • the present invention also provides a relay of the above indicated type, in which the compression of a relay return spring in rest position may be easily changed, so as to vary at will its reaction force, when this is desired.
  • the relay of the present invention comprises a housing and a carrier movable reciprocally between a first and a second position with respect to the housing.
  • window recesses are provided in the carrier and these window recesses are divided by means of lugs protruding thereinto from the carrier, into two zones displaced in the direction of carrier movement.
  • a contact unit is positionable in either zone of each window recess.
  • the contact unit comprises a first contact element and a spring secured thereto. The contact unit is placed in either zone of a window recess with the spring pressing against the outer recess wall and forcing the rst contact element against the lugs.
  • a lfurther contact is carried by the housing and is positioned to be contacted by the irst contact element when it is in one window recess zone with the carrier in its first position and when it is in the other window recess zone with the carrier in its second position and to be otherwise displaced from the irst contact element.
  • the device may be shifted between normally closed and normally opened condition simply by manually shifting the zone of the contact unit.
  • the carrier is spring biased to one of its positions and is electro. magnetically actuated to its other position.
  • the movable contacts are carried by a suitable unit constituted by a supporting bridge for the movable contacts, having a central slit, by an auxiliary T-shaped element, whose stem may slide in the slit of the bridge, and by a compression spring positioned about the stern of the T-shaped auxiliary element and acting between the latter and the bridge.
  • the movable contact unit can be manually engaged in, and disengaged from, the carrier, and its position therein can be changed to dispose the contacts selectively in a normally opened condition or in a normally closed condition, and vice versa.
  • the means for keeping the carrier in its deenergized or rest position includes a bar transversally disposed in the seat, which has its ends inserted in suitable seats of the housing.
  • the bar is slidable in the direction of motion of the carrier and has associated therewith, a spring acting between the bar and the carrier.
  • the control electromagnet comprises a magnet circuit formed by a lixed portion and by a movable portion, or armature, both portions being preferably E-shaped.
  • An energizing coil encircles their central leg.
  • the housing of the relay is constituted by a base portion to which the fixed magnetic circuit is secured, and by two portions, containing the stationary contacts and removably assembled on the base portion with suitable connecting means so as to form a box-like outer housing.
  • the energizing coil and the fixed magnetic circuit can be independently connected to the base portion with separate fastening means, or a single fastening means can be used for both of them.
  • Relays having convertible contacts are normally multipole relays; therefore, it may be advantageous to dispose the stationary contacts along two parallel lines.
  • the poles are preferably four or eight in number, and the carrier is provided with as many windows for the movable contacts as there are poles, each obtained between the two facing stationary contacts of each pole.
  • the windows of the contact carrier are made rectangular in shape and each of them, on both the inner faces of its longer sides, is provided with a projecting portion in a direction perpendicular to the motion of the carrier.
  • the two projecting portions which face each other in each window divide the window into two zones, in either of which, as desired, the movable contact unit may be disposed.
  • the contact may be shifted between normally opened and normally closed conditions.
  • the windows are each provided with two protuberances along their inner faces at the sides opposite to each projecting portion.
  • the two protuberances in each of the window zones are received in suitable grooves obtained in the T-shaped auxiliary element; and these protuberances act as a stop for the movable contact unit disposed in the window.
  • the T-shaped auxiliary element is also inserted in the slit of the supporting bridge and consequently its stem is shaped like a fork and the points of the fork are bent out so as to act as a stop for the bridge when this is inserted in the stem.
  • the housing of the relay is formed, as stated above, by a base part to which two further parts are removably assembled.
  • the base part is constituted by a flat bottom of rectangular shape surrounded by a frame which provides a lifted edge with respect to the at bot* torn.
  • This frame on two opposite sides, is provided with a lug for securing the base to an outer panel and, along its inside, it is provided with a suitable projection.
  • a guide is provided on the other two sides of the frame, and this guide acts as a top for the two parts of the housing when these are in place on the base.
  • One wall of the two parts of the housing is provided with two appropriate tongues which enclose the inner projection of the sides of the frame; the two walls contiguous to it are provided with a suitable projecting ridge which engages with the means for connecting the two parts of the housing.
  • the means for connecting the two parts of the housing permits easy disconnection of these parts from the base and at the same time allows their disconnection also when the relay is installed.
  • the connecting means are constituted by a metal plate fastened to the base and by two braces slidable in guides formed on the sides of the frame.
  • the braces are connected at one end to the metal plate.
  • the braces are provided at their opposite end with two holes into which the projecting ridges of the two housing parts can be inserted.
  • An alternative embodiment of the invention provides a cross-shaped metal plate; in this case two arms serve, as in the preceding case, to the connection with the braces, whilst the other two arms are bent towards the inside of the base, the bottom of which is in that case provided with two suitable slots, and act as the only means for securing the xed magnetic circuit to the base.
  • the two U-folded arms of the metal plate may be advantageous to cause the two U-folded arms of the metal plate to act as a means for securing to the base both the coil and the xed magnetic circuit at the same time.
  • FIG. 1 is an overall perspective view of a four-pole electromagnetic relay forming one embodiment of the present invention
  • FIG. 2 is an exploded perspective view of the relay of FIG. 1;
  • FIG. 3 is a top view of the relay of FIG. 1;
  • FIG. 4 is a cross sectional view of the relay of FIG- URE l, taken along a plane passing through line 4-4 of FIG. 3;
  • FIG. 5 is a cross sectional view of the relay of FIG. 1, taken along a plane passing through line 5 5 of FIG. 3;
  • FIG. 6 is an exploded perspective view of a movable contact unit forming one portion of the relay of FIG. 1;
  • FIG. 7a is a side elevational view of the movable contact unit of FIG. 6 in assembly, with the movable contacts being normally closed and the relay being in deenergized or rest position;
  • FIG. 7b is a view similar to FIG. 7a but showing the unit with the relay being in operating position;
  • FIG. 8a is a view similar to FIG. 7a, with the movable i contacts being normally opened;
  • FIG. 8b is a view similar to FIG. 8a but showing the unit with the relay being in operating position.
  • the relay shown in the various drawings incorporates four poles.
  • a relay housing 1 formed by two parts 1a and 1b connected to a rectangular base 2 so as to form a box-like structure.
  • the housing 1 contains a control electromagnet and a contact carrier 6.
  • the control electromagnet is constituted by a magnetic circuit formed by a fixed magnetic part 3 and by a movable magnetic part or armature 4 and by an energizing coil 5.
  • the two parts 3 and 4 of the magnetic circuit which are of identical configuration, are formed by E- shaped laminations kept together for instance by riveting. Although it is not strictly necessary to buildup the magnetic circuit in two equal parts, in this way it is advantageously possible to use a single mould for the laminations thereby reducing the number of different parts which must be stocked for producing these relays.
  • the parts 3 and 4 are both provided with grooves 7 and abutments 8 in their two lateral legs. These grooves and abutments serve to mount a shading coil 9 positioned in the fixed magnetic circuit.
  • the length of the central leg of the armature 4 is reduced slightly from the outer legs so as to leave a gap, when the parts 3 and 4 are closed on each other. This facilitates the separation of the armature 4 from the fixed part 3 when the coil 5 is deenergized.
  • the two parts 1a and 1b of the housing 1 are identical and interchangeable. While this is not strictly necessary, it does serve to permit the use of a single mould for the two parts with a consequent reduction in the cost of forming and storing several different parts.
  • the two parts 1 and 2 are provided along their inside surfaces with a plurality of recesses 10. Stationary contacts 11 are encased within the recesses 10. A like num-v ber of outer recesses 12, corresponding to the inner recesses 10 are provided on the outside surfaces ofthe housing 1 and these outer recesses serve to encase connecting clamps 13.
  • a rectangular base 2 permits fastening of the relay to a panel or a supporting frame; and to this end it is provided, at its two outer opposite ends, with two securing lugs 14 which extend inwardly with projections 15. The latter are surrounded by two tongues 16 situated in the parts 1a and 1b to facilitate the closing of the housing.
  • Two ridges 17 on the other two sides of the base 2 are suitably shaped to act as a guide for two braces 18 and as a stop for the parts 1a and 1b.
  • a spring 19, formed from a cross-shaped metal plate is secured to the base 2, for example by means of bushes; and two of its arms 20a are connected to the braces 18, whilst its other two arms 20h are U-shaped and penetrate inside the base 2 through suitable slots 20c formed therein.
  • the braces 18, having an elongated shape, are provided in their central portion with a longitudinal opening 21 and, at the ends opposite to the base, with two holes 22 which surround two projecting ridges 23 situated in the parts 1a and 1b.
  • the fixed part 3 of the magnetic circuit and the energizing coil 5, are connected to the base 2.
  • two rails 24, suitably disposed in the base 1 provide a seat for the fixed part 3.
  • the coil 5 is inserted over the central leg of the part 3 and two cushion pads 25 and 26 (shown in FIGS. 4 and 5) are disposed between the base 1 and the fixed part 3 and between the xed part 3 and the coil 5.
  • These cushions absorb any shocks which may be imposed on the fixed part 3 when the armature is actuated.
  • the coil 5 moreover, has two lateral protrusions 27 which penetrate into suitable openings 28 formed in the arms 20b of the spring 19. In 4this way the coil 5 is pressed against the xed part 3 of the magnetic circuit and the fixed part 3 in turn is pressed against the base 2 of the relay, so that a very firm connection is obtained, which at the same time is very simple.
  • the coil 5 is provided with two terminals 29 which are inserted into suitable openings 30 formed in both parts 1a and 1b which, as stated above, are identical.
  • a possible third opening 30a may be provided in these parts to allow observation of the coil 5 inside the housing.
  • the carrier 6, as can be seen in FIG. 4, is of rectangular shape; and within its periphery various partitions 31 are provided to dene window recesses 32. There are as many of these windows as there are poles of the relay.
  • the carrier 6 is outwardly provided with two lateral ribs 33 which extend outside the housing 1 to ride in the longitudinal openings 21 of the braces 18, and a seat 34 (as shown in FIGS. 4 and 5) for the movable armature 4.
  • the latter is directly moulded with the carrier so as to obtain a rm connection without any gap.
  • the carrier 6 is provided with a boss 35, with a threaded hole 36, which extends outside the housing 1 and may serve for the connection of the relay to other devices.
  • the window recesses 32 house movable contacts for the relay. These windows have a rectangular shape; and each of them carries on both inner faces of its longer sides, a projecting portion 41 which extends in a direction normal to the direction of motion of the carrier. There are also provided two protuberances 42 at the opposite sides of each projecting portion 41.
  • the projecting portions 41 in each window divide the latter in two zones, namely an upper zone and a lower zone, in either of which movable contacts 40 may be inserted.
  • the movable contacts 40 form part of a contact unit, the details of which are shown in FIGS. 6, 7a, 7b, 8a and 8b.
  • This contact unit comprises a contact bridge 43 having a central slit 44, a T-shaped auxiliary element 45 and a compression spring 46.
  • the auxiliary element 45 has a fork-shaped stern 47, which terminates with two outwardly protruding points 48, and two lateral grooves 49.
  • the .spring 46 is placed around the stem of the auxiliary element 45, and the stem then passes through the slit 44 of the bridge 43.
  • the two parts of the fork-shaped stem 47 are bent together to permit the points 48 to pass through the slit 44. Thereafter the detachment of the bridge is prevented by the bent-out points 48 acting as a stop.
  • the T-shaped auxiliary element 45 When the contact unit is disposed in the carrier 6 in normally opened position, that is when it is inserted in the upper zone of a window recess 32, the T-shaped auxiliary element 45 bears against an outer wall of the carrier 6 itself, while the bridge 43 is biased by the spring 46 against the projecting portion 41.
  • the longitudinal protuberances 42, engaging in the grooves 49 of the T- shaped auxiliary element 45 prevent any transverse movement of the unit.
  • the bridges 43 are not in contact with the projecting portions 41, but instead they rest on the stationary contacts 11.
  • the arms of the T-shaped auxiliary element 45 are encased in the recesses 10 of the parts 1a and 1b and are pressed against supporting planes 50 within these grooves. In this way the spring 46, closes the contacts, by producing a reaction which is directed against the housing itself.
  • the central portion of the transversal bar 39 supports the lower end of the compression spring 38.
  • the upper end of the spring presses upwardly on the carrier 6.
  • the spring 38 In rest or deenergized condition, the spring 38 is slightly compressed so as to overcome the weight of the carrier 6 and to keep the boss 35 of the carrier out of the housing 1.
  • the spring 38 becomes further compressed so as to provide, at subsequent deenergization, the return force necessary to bring the carrier back to its normal position.
  • the boss 35 of the carrier 6 serves to permit connection of external devices associated to the relay. These devices generally exert a force on the boss 35, which tends to push the carrier down inside the housing toward its operating or energized position. This may tend to prematurely open the normally closed contacts and/ or close the normally opened contacts. To avoid this risk it is necessary to oppose the force exerted on the boss 35 by increasing the initial compression of the spring 38. To this end it is sufficient to raise (by means not forming a portion of the present invention), the ends 51 of the bar 39 at their point of support.
  • the coil 5 is energized by supplying it with electrical current applied through the terminals 29.
  • the armature 4 of the electromagnet is attracted towards the fixed part 3 of the magnetic circuit.
  • the carrier 6 which is integrally associated with the armature 4, moves with it; and is guided in such movement by the ribs 33 engaged in the openings 21 of the braces 18. In this way the normally opened electric contacts are closed and the normally closed electric contacts are opened.
  • the contact unit is repositioned in an inverted arrangement so that the bridge 43 is still held by the side of the projecting portions 41.
  • the two housing parts 1a and 1b are again connected with the base 2 and with the braces 18.
  • An electromagnetic relay with convertible contacts said relay comprising a housing which can be opened, an electromagnet, a carrier actuated by said electromagnet and movable between a rest position and an operating position within said housing, means resiliently biasing said carrier in its rest position said carrier being formed with a plurality of windows, and a plurality of movable relay contacts removably disposed in said windows, said movable contacts each being -a part of a separate removable contact unit, each contact unit including a contact carrying bridge provided with a central slit, a T-shaped auxiliary element having a stem slidable -in the slit of the bridge, -and a compression spring disposed about the stem of the auxiliary element and acting between the latter and said bridge, each contact unit being manually insertable in and removable from the carrier as a unit in each one of two positions within a corresponding window to convert the movable contacts from a normally open position to a normally closed position and vice-versa.
  • T-shaped auxiliary element of the contact unit has a forkshaped stem with outwardly protruding points which serve as a stop for the contact carrying bridge and has its head formed with two lateral grooves engageable with the protuberances in the windows of the carrier.
  • the two greater sides of said fr-ame being provided with v an outward lug for fastening said fiat bottom to a support and with an inward projection
  • the two smaller sides of said frame being provided with a guide
  • two removable housing parts assembled on said flat bottom to form a box-like structure and being each provided on walls thereof corresponding to the greater side of said base, with two tongues which enclose the inward projection of said greater side and, yon each of the walls corresponding to the smaller sides of the base, with a projecting ridge
  • T-shaped auxiliary element of the contact unit has a fork-shaped stem with outwardly protruding points which serve yas a stop for the contact carrying bridge and has its head formed with two lateral grooves engageable with the protuberances in the windows of the carrier.
  • said means for biasing said carrier -in its rest position is constituted by a bar which extends transversely across the interior of said housing and which is slidable with respect to said carrier in the direction of .carrier movement, and a spring .acting between said bar and the carrier.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Electromagnets (AREA)
US640577A 1966-05-24 1967-05-23 Multi-pole electromagnetic relay with convertible contacts Expired - Lifetime US3469215A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1820766 1966-05-24
IT1201166 1966-05-24

Publications (1)

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US3469215A true US3469215A (en) 1969-09-23

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US640577A Expired - Lifetime US3469215A (en) 1966-05-24 1967-05-23 Multi-pole electromagnetic relay with convertible contacts

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US (1) US3469215A (enrdf_load_stackoverflow)
BE (1) BE698784A (enrdf_load_stackoverflow)
DE (1) DE1614342A1 (enrdf_load_stackoverflow)
GB (1) GB1178135A (enrdf_load_stackoverflow)
LU (1) LU53705A1 (enrdf_load_stackoverflow)
NL (1) NL6707110A (enrdf_load_stackoverflow)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3673525A (en) * 1971-03-30 1972-06-27 Westinghouse Electric Corp Contactor
US3753177A (en) * 1972-03-31 1973-08-14 Westinghouse Electric Corp Electric control device
US3806849A (en) * 1973-06-18 1974-04-23 Gen Electric Small definite purpose contactor
US4086550A (en) * 1976-10-15 1978-04-25 U.S. Engineering Corporation Relay
US4710740A (en) * 1987-01-20 1987-12-01 Eaton Corporation Electromagnetic operator for a contactor with improved shock pad
US4724410A (en) * 1986-09-25 1988-02-09 Furnas Electric Company Electrical contactor
US4760364A (en) * 1986-08-28 1988-07-26 Eaton Corporation Electromagnetic contactor having improved structure and assembly
US4945328A (en) * 1988-10-31 1990-07-31 Furnas Electric Company Electrical contactor
US7633399B2 (en) 2007-02-27 2009-12-15 Eaton Corporation Configurable arc fault or ground fault circuit interrupter and method
US20100127805A1 (en) * 2007-04-13 2010-05-27 Toyota Jidosha Kabushiki Kaisha Production method for an electromagnetic switching device having partition walls between primary and auxiliary contacts and an electromagnetic switching device produced according to the production method

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Publication number Priority date Publication date Assignee Title
DE2248029A1 (de) * 1972-09-29 1974-04-11 Siemens Ag Traeger fuer die beweglichen kontakte eines schaltgeraetes
DE3032724A1 (de) * 1980-08-30 1982-04-29 Brown, Boveri & Cie Ag, 6800 Mannheim Elektromagnetisches schaltgeraet
FR2519187B1 (fr) * 1981-12-30 1985-08-16 Telemecanique Electrique Appareil interrupteur electromagnetique ayant differentes configurations d'interrupteur a ouverture ou a fermeture
FR2538037B1 (fr) * 1982-12-21 1987-04-17 Paris & Du Rhone Axe composite de contacteur electromagnetique de demarreur electrique
EP0160121B1 (de) * 1984-03-31 1990-01-10 Square D Company (Deutschland) Gmbh Elektromagnet für elektrische Schaltgeräte, insbesondere Schütze
DE102012201967B4 (de) * 2012-02-09 2019-01-17 Te Connectivity Germany Gmbh Schaltkontaktbaugruppe sowie Bausatz und Montageverfahren hierfür
DE102012201966A1 (de) * 2012-02-09 2013-08-14 Tyco Electronics Amp Gmbh Schaltkontaktbaugruppe mit Schaltkontaktbrücke und Kontaktbrückenhalter

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2924685A (en) * 1957-09-26 1960-02-09 Gen Electric Magnetic switch
US3215800A (en) * 1962-07-02 1965-11-02 Square D Co Electromagnetic relay and contact carrier assembly therefor
US3334319A (en) * 1965-08-20 1967-08-01 Ite Circuit Breaker Ltd Electro-magnetic contactor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2924685A (en) * 1957-09-26 1960-02-09 Gen Electric Magnetic switch
US3215800A (en) * 1962-07-02 1965-11-02 Square D Co Electromagnetic relay and contact carrier assembly therefor
US3334319A (en) * 1965-08-20 1967-08-01 Ite Circuit Breaker Ltd Electro-magnetic contactor

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3673525A (en) * 1971-03-30 1972-06-27 Westinghouse Electric Corp Contactor
US3753177A (en) * 1972-03-31 1973-08-14 Westinghouse Electric Corp Electric control device
US3806849A (en) * 1973-06-18 1974-04-23 Gen Electric Small definite purpose contactor
US4086550A (en) * 1976-10-15 1978-04-25 U.S. Engineering Corporation Relay
US4760364A (en) * 1986-08-28 1988-07-26 Eaton Corporation Electromagnetic contactor having improved structure and assembly
US4724410A (en) * 1986-09-25 1988-02-09 Furnas Electric Company Electrical contactor
US4710740A (en) * 1987-01-20 1987-12-01 Eaton Corporation Electromagnetic operator for a contactor with improved shock pad
US4945328A (en) * 1988-10-31 1990-07-31 Furnas Electric Company Electrical contactor
US7633399B2 (en) 2007-02-27 2009-12-15 Eaton Corporation Configurable arc fault or ground fault circuit interrupter and method
US20100127805A1 (en) * 2007-04-13 2010-05-27 Toyota Jidosha Kabushiki Kaisha Production method for an electromagnetic switching device having partition walls between primary and auxiliary contacts and an electromagnetic switching device produced according to the production method
US8159321B2 (en) * 2007-04-13 2012-04-17 Siemens Aktiengesellschaft Production method for an electromagnetic switching device having partition walls between primary and auxiliary contacts and an electromagnetic switching device produced according to the production method

Also Published As

Publication number Publication date
LU53705A1 (enrdf_load_stackoverflow) 1967-07-19
BE698784A (enrdf_load_stackoverflow) 1967-11-03
DE1614342A1 (de) 1970-05-27
NL6707110A (enrdf_load_stackoverflow) 1967-11-27
GB1178135A (en) 1970-01-21

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