EP0017815B1 - Interrupteur pour basse tension à coupure en charge et avec fusible - Google Patents

Interrupteur pour basse tension à coupure en charge et avec fusible Download PDF

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Publication number
EP0017815B1
EP0017815B1 EP80101604A EP80101604A EP0017815B1 EP 0017815 B1 EP0017815 B1 EP 0017815B1 EP 80101604 A EP80101604 A EP 80101604A EP 80101604 A EP80101604 A EP 80101604A EP 0017815 B1 EP0017815 B1 EP 0017815B1
Authority
EP
European Patent Office
Prior art keywords
contact
fuse
switch
load switch
magazine
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.)
Expired
Application number
EP80101604A
Other languages
German (de)
English (en)
Other versions
EP0017815A1 (fr
Inventor
Richard Schulz
Anton Galli
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to AT80101604T priority Critical patent/ATE3921T1/de
Publication of EP0017815A1 publication Critical patent/EP0017815A1/fr
Application granted granted Critical
Publication of EP0017815B1 publication Critical patent/EP0017815B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/10—Adaptation for built-in fuses
    • H01H9/102—Fuses mounted on or constituting the movable contact parts of the switch

Definitions

  • the invention relates to a low-voltage circuit breaker with fuse, hereinafter referred to as a fuse switch, the fuse link of which is arranged in a receptacle formed as a collapsible magazine which can be locked in its lower position within its stroke, and in the power supply of which a load switch which is forcibly actuated by hand when the fuse link is replaced is arranged.
  • a circuit breaker is known in principle, although not with a load switch in today's sense (FR-A-20 63 804).
  • a switchable fuse is known (US-A-20 18 476), according to which a wide, flat housing accommodates a slide, on which a fuse link can be inserted, and can be covered over a large area by a cover.
  • the otherwise open slide has contact tabs which engage in one position with knife contacts of the housing base, the slide being offset from contact engagement laterally to this. Since the cover is attached to the slide, it can first be moved laterally into the off position, after which the cover can be opened. However, this process is not necessarily ensured, since the lid can also be opened without having to move it laterally.
  • the fuse link is covered by a screw cap and additionally by a flap which has to be folded up before actuating the screw cap and thereby switches off the load switch in the power supply via a coupling.
  • the flap When the fuse link is removed, the flap must be locked in the open position to prevent the fuse switch from being switched on without the fuse link, as otherwise theft of electricity would be possible.
  • lugs and cutouts are provided in a known lower securing part (DE-B-24 09 238).
  • the insulating cap, with the fuse insert inserted is first inserted in the axial direction up to a stop and then guided into a latching position by movement perpendicular to the longitudinal axis. This not only represents an unusual sequence of movements for the operator, but switching under load is not harmless: since the switch contact is formed by the foot cap of the fuse link and a foot contact of the fuse base, the thin contact cap of the fuse link can be damaged when operating under load. This device is therefore not suitable for switching under load.
  • Fuses which can be switched off are known (DE-A-26 42 223) in which the contact for securing use after insertion is produced by a rotary movement in the manner of a toggle switch. Since tolerances have to be compensated for, the contacts are designed to be resilient, which is why they can only carry weak currents.
  • the invention has for its object to develop a circuit breaker with a magazine and yet operational and handling safe load switch that is safe against power theft.
  • the solution to the described problem is that the load switch of head and foot contact for the fuse link has separate contacts, the foot contact of the receiving space being rigidly connected to the switch contact of the load switch.
  • Such a circuit breaker allows the load switch to be made stable and does not endanger the contacts of the fuse link, which are sensitive to an arc.
  • the fixed connection between two contact points is known in an electrical switching device belonging to the genus of circuit breakers (CH-A-43 16 61).
  • CH-A-43 16 61 In order to expose the contact elements to an increased contact force in the closed position when current is passed, two legs which are practically parallel in the closed position and are electrically connected in series at adjacent ends by a bridging element movable in the switching plane are formed, one of which is connected to a connecting terminal and the other leg cooperates with the counter contact.
  • This connection is not rigid and such a switch works without a magazine. This switchgear cannot accommodate a fuse link either.
  • the fuse link can be exchanged particularly easily.
  • the contact pressure becomes independent of tolerance when an energy accumulator acts on the foot contact in the direction of the imaginary axis of the fuse link.
  • the fuse switch according to FIG. 1 forms a receptacle for a fuse link 4 in a collapsible magazine 1 with the folding parts 2 and 3.
  • the head contact 5 and foot contact 6 of the magazine represent the contacts of a fuse base.
  • the head contact 5 is via a sheet metal part with a movable current conductor 8 connected to an outgoing terminal 9.
  • the head contact 5 is arranged in the folding part 2 of the magazine 1 and the foot contact 6 in the other folding part 3.
  • a force accumulator 10 acts on the foot contact 6 in the direction of the imaginary axis 11 of the fuse link 4.
  • the folding parts 2 and 3 are connected by a hinge 12, the axis of which is arranged laterally to the receiving space and perpendicular to the imaginary axis 11 of the fuse link 4.
  • the load switch 13 has separate contacts from the contacts of the receiving space, foot contact 6 and head contact 5 with the contact pieces 14 and 15.
  • the foot contact 6 of the receiving space is rigidly connected to the switching contact with the contact piece 14.
  • baffle plates 16 are arranged next to the contacts of the circuit breaker.
  • An electrically conductive connection leads from the fixed contact to the contact piece 15 to the connecting terminal 17, to which the mains connection is to be made.
  • a contact spring 18 ensures consistently good contact pressure.
  • the load switch can be accommodated in a protective insulating housing.
  • the magazine with the folding parts 2 and 3 can be sealed in the closed position, so that it can be used universally.
  • the device can be snapped onto mounting rails 19 in the usual manner.
  • a fitting element which ensures the unmistakability for a melt insert of suitable nominal current strength in the usual way held in the exemplary embodiment by the spring clip 20.
  • This can be designed such that it also covers a passage of the foot contact 6 through the magazine 1 to the outside.
  • the head contact 5 slides with a beveled end face 21 onto the head contact of the fuse link 4.
  • the compression spring serving as energy store 10 is tensioned so that the appropriate contact pressure is ensured regardless of housing tolerances.
  • the closed magazine 2 can then be pressed in in a manner known per se around the switch-on position according to FIG. 2 in the direction of the axis 11 of the fuse link 4. By pressing again, the magazine 1 is released again and raised to the extent that the grip edge of the magazine 1 can be grasped. Its sloping flanks 22 also serve as a support when the folding part 3 is opened. When the magazine 1 is locked in its lower position of the stroke, the edge of the magazine is covered by the housing edge 23 according to FIG.
  • the exclusion terminal 17 and high output terminal 9 are shielded from the outside by a conventional cover 25.

Landscapes

  • Fuses (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Keying Circuit Devices (AREA)

Claims (3)

1. Interrupteur de coupure en charge basse tension et à fusible, désigné ci-après par interrupteur à fusible, dont la cartouche de fusible (4) est disposée dans un logement réalisé sous la forme d'un magasin (1) repliable, susceptible d'être encliqueté dans sa course, dans sa position inférieure, et dans l'alimentation en courant duquel est disposé un interrupteur de coupure en charge (13) à actionner obligatoire à la main lors du remplacement de la cartouche à fusible (4), caractérisé par le fait que l'interrupteur de coupure en charge (13) comporte, indépendamment du contact de tète (5) et du contact de pied (6) pour la cartouche à fusible (4), des contacts distincts, le contact de pied (6) du logement étant relié rigidement avec le contact de coupure (14) de l'interrupteur de coupure en charge (13).
2. Interrupteur à fusible selon la revendication 1, caractérisé par le fait que le contact de tête (5) est disposé dans une partie rabattable (2) du magasin (1) et le contact de pied (6) est disposé dans l'autre partie rabattable (3).
3. Interrupteur à fusible selon l'une des revendications 1 et 2, caractérisé par le fait que le contact de pied (6) est attaqué, par un accumulateur d'énergie (10), en direction de l'axe imaginaire (11) de la cartouche à fusible (4).
EP80101604A 1979-04-12 1980-03-26 Interrupteur pour basse tension à coupure en charge et avec fusible Expired EP0017815B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80101604T ATE3921T1 (de) 1979-04-12 1980-03-26 Niederspannungs-lastschalter mit sicherung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2915090A DE2915090C2 (de) 1979-04-12 1979-04-12 Niederspannungs-Lastschalter mit Sicherung
DE2915090 1979-04-12

Publications (2)

Publication Number Publication Date
EP0017815A1 EP0017815A1 (fr) 1980-10-29
EP0017815B1 true EP0017815B1 (fr) 1983-06-22

Family

ID=6068303

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80101604A Expired EP0017815B1 (fr) 1979-04-12 1980-03-26 Interrupteur pour basse tension à coupure en charge et avec fusible

Country Status (4)

Country Link
EP (1) EP0017815B1 (fr)
AT (1) ATE3921T1 (fr)
DE (1) DE2915090C2 (fr)
ES (1) ES490474A0 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10345785B3 (de) * 2003-10-01 2005-06-02 Klaus Bruchmann Berührungsgeschützter Sicherungsschalter

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1009911C2 (nl) * 1998-08-20 2000-02-29 Holec Holland Nv Veiligheidslastschakelaar.
AU6696400A (en) * 1999-07-22 2001-02-13 Klaus Bruchmann Protection device for a contact, especially the contact of fuse link

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2018476A (en) * 1933-08-16 1935-10-22 Trumbull Electric Company Electric switch
NO119094B (fr) * 1964-03-09 1970-03-23 Svenska Elfab Ab Selfa
FR2063804A5 (fr) * 1969-10-31 1971-07-09 Marechal Sepm
FR2191234B1 (fr) * 1972-06-28 1976-08-06 Faeam
DE2334595B1 (de) * 1973-07-07 1974-04-25 Lindner Gmbh Fabrik Elek Scher Mit einem Schalter versehener Sicherungssockel fuer Schmelzeinsaetze
DE2648714A1 (de) * 1976-10-27 1978-05-03 Geyer Gmbh & Co Christian Sicherungs-lastschalter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10345785B3 (de) * 2003-10-01 2005-06-02 Klaus Bruchmann Berührungsgeschützter Sicherungsschalter

Also Published As

Publication number Publication date
ES8101320A1 (es) 1980-12-01
ES490474A0 (es) 1980-12-01
DE2915090C2 (de) 1982-03-04
DE2915090A1 (de) 1980-10-16
ATE3921T1 (de) 1983-07-15
EP0017815A1 (fr) 1980-10-29

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