GB1132521A - An automatic current limiting circuit breaker - Google Patents

An automatic current limiting circuit breaker

Info

Publication number
GB1132521A
GB1132521A GB3945/66A GB394566A GB1132521A GB 1132521 A GB1132521 A GB 1132521A GB 3945/66 A GB3945/66 A GB 3945/66A GB 394566 A GB394566 A GB 394566A GB 1132521 A GB1132521 A GB 1132521A
Authority
GB
United Kingdom
Prior art keywords
magnet
armature
contacts
dec
closed position
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
GB3945/66A
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.)
STOICHI SHIMADA
Original Assignee
STOICHI SHIMADA
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 claimed from JP530465A external-priority patent/JPS4825913B1/ja
Application filed by STOICHI SHIMADA filed Critical STOICHI SHIMADA
Publication of GB1132521A publication Critical patent/GB1132521A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/142—Electrothermal mechanisms actuated due to change of magnetic permeability
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • H01H36/0073—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding actuated by relative movement between two magnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/58—Manual reset mechanisms which may be also used for manual release actuated by push-button, pull-knob, or slide
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/62—Manual reset mechanisms which may be also used for manual release with means for preventing resetting while abnormal condition persists, e.g. loose handle arrangement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
    • H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
    • H01H77/06—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electromagnetic opening
    • H01H77/08—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electromagnetic opening retained closed by permanent or remanent magnetism and opened by windings acting in opposition

Landscapes

  • Breakers (AREA)
  • Electromagnets (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Abstract

1,132,521. Automatic circuit-breakers; vacuum switches. S. SHIMADA. 28 Jan., 1966 [2 Feb., 1965; 5 Feb., 1965; 1 June, 1965; 26 Nov., 1965; 2 Dec., 1965; 22 Dec., 1965; 28 Dec., 1965], No. 3945/66. Heading H1N. An armature 19, Fig. 3, carrying one contact 14b of an automatic circuit-breaker and normally attracted to a permanent magnet 17 is surrounded by a coiled conductor 16 in series with the contacts so that under overload the armature 19 is heated by the coil 16 reducing the attraction by magnet 17 and allowing the contacts to be opened by springs 11. The magnet 17 is attached to a second magnet 45 which is magnetically coupled to a further magnet 49 movable by a handle 50 so that the contacts can be manually operated between open and closed positions. The magnets 17, 45 and armature 19 are slidable on a pin 44 mounted in a sealed evacuated envelope 37. In an alternative embodiment (Fig. 2, not shown) the magnet 17 is directly attached to a push-button (6<SP>1</SP>) and is held in the closed position by a fixed magnet (34). In a third embodiment (Fig. 1) the armature 19 is maintained in the closed position by the weight of attached magnet 17 but, under overload, the magnet separates from the armature and spring 11 draws the armature upwards to separate the contacts. The armature is located in the closed position by a ball catch 8-10. Under overload, the coil 16 heats the armature to reduce the magnetic attraction, thus releasing the contacts after a time delay but under shortcircuit conditions the magnetic effect of the coil reduces the attraction instantaneously providing a current limiting action.
GB3945/66A 1965-02-02 1966-01-28 An automatic current limiting circuit breaker Expired GB1132521A (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP530465A JPS4825913B1 (en) 1965-02-02 1965-02-02
JP601865 1965-02-05
JP3189365 1965-06-01
JP7235365 1965-11-26
JP7363165 1965-12-02
JP7852265 1965-12-22
JP10698065 1965-12-28

Publications (1)

Publication Number Publication Date
GB1132521A true GB1132521A (en) 1968-11-06

Family

ID=27563304

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3945/66A Expired GB1132521A (en) 1965-02-02 1966-01-28 An automatic current limiting circuit breaker

Country Status (5)

Country Link
US (1) US3373383A (en)
CH (1) CH456746A (en)
DE (1) DE1563660B2 (en)
GB (1) GB1132521A (en)
NL (1) NL6601254A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2284935A (en) * 1993-12-15 1995-06-21 Tripco Ltd Circuit Breaker
GB2331402A (en) * 1997-11-12 1999-05-19 Tripco Ltd A manually resettable relay
CN114388313A (en) * 2021-12-24 2022-04-22 上海京硅智能技术有限公司 Direct-acting circuit breaker

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2818898C2 (en) * 1978-04-27 1984-02-09 Lee, Wen-Fong, Taichung Magnetic switch
US4837539A (en) * 1987-12-08 1989-06-06 Cameron Iron Works Usa, Inc. Magnetic sensing proximity detector
DE10020695A1 (en) * 2000-04-27 2001-10-31 Moeller Gmbh Magnetic release to open a contact system
DE102011002294A1 (en) * 2011-04-27 2012-10-31 Tyco Electronics Amp Gmbh Overload protection device for the protection of electrical components against excessive operating currents
US11798767B1 (en) * 2022-05-13 2023-10-24 Lumi Legend Electrical Co. Ltd Electrical overload protection device and method of use

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1687515A (en) * 1926-04-09 1928-10-16 Gen Electric Circuit interrupter
US2462892A (en) * 1943-08-28 1949-03-01 Pierce John B Foundation Reverse current circuit breaker
US2810802A (en) * 1954-11-05 1957-10-22 Steiner Rudolf Circuit breaker
US3215799A (en) * 1961-05-02 1965-11-02 Ite Circuit Breaker Ltd Magnetic trip structure for high speed circuit breakers
US3158711A (en) * 1962-08-23 1964-11-24 Gen Electric Current limiting circuit breaker

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2284935A (en) * 1993-12-15 1995-06-21 Tripco Ltd Circuit Breaker
US5485133A (en) * 1993-12-15 1996-01-16 Tripco Limited Circuit breaker
GB2331402A (en) * 1997-11-12 1999-05-19 Tripco Ltd A manually resettable relay
CN114388313A (en) * 2021-12-24 2022-04-22 上海京硅智能技术有限公司 Direct-acting circuit breaker
CN114388313B (en) * 2021-12-24 2024-03-12 上海京硅智能技术有限公司 Direct-acting breaker

Also Published As

Publication number Publication date
US3373383A (en) 1968-03-12
DE1563660A1 (en) 1970-03-19
CH456746A (en) 1968-07-31
NL6601254A (en) 1966-08-03
DE1563660B2 (en) 1972-06-22

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