GB1364647A - Electrical current overload trip devices - Google Patents

Electrical current overload trip devices

Info

Publication number
GB1364647A
GB1364647A GB5251271A GB5251271A GB1364647A GB 1364647 A GB1364647 A GB 1364647A GB 5251271 A GB5251271 A GB 5251271A GB 5251271 A GB5251271 A GB 5251271A GB 1364647 A GB1364647 A GB 1364647A
Authority
GB
United Kingdom
Prior art keywords
armature
yoke
armatures
nov
overload 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.)
Expired
Application number
GB5251271A
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
Publication of GB1364647A publication Critical patent/GB1364647A/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
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2436—Electromagnetic mechanisms with a holding and a releasing magnet, the holding force being limited due to saturation of the holding magnet

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Electromagnets (AREA)

Abstract

1364647 Automatic circuit-breakers SIEMENS AG 11 Nov 1971 [13 Nov 1970] 52512/71 Heading H1N An overload trip device for a circuit-breaker comprises a yoke 2 which is magnetized by the current in a conductor, e.g. a bus-bar 1, a main trip armature 6 carried by a pivoted arm 7, an auxiliary armature 13 adjacent an air gap 12 in the yoke 2 and a pin 15 extending between the armatures. Normally the armature 13 is attracted, but should the current become excessive then the armature 6 is strongly attracted towards the yoke and moves the armature 13 away from the yoke, so that the restraining force provided by the armature 13 rapidly diminishes as the force acting on the armature 6 rapidly increases, so that a high speed tripping action is obtained. Light springs 8, 14 restore the armatures to their initial positions.
GB5251271A 1970-11-13 1971-11-11 Electrical current overload trip devices Expired GB1364647A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702056867 DE2056867C3 (en) 1970-11-13 1970-11-13 Overcurrent release device for circuit breakers

Publications (1)

Publication Number Publication Date
GB1364647A true GB1364647A (en) 1974-08-29

Family

ID=5788546

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5251271A Expired GB1364647A (en) 1970-11-13 1971-11-11 Electrical current overload trip devices

Country Status (5)

Country Link
JP (1) JPS5316512B1 (en)
DE (1) DE2056867C3 (en)
FR (1) FR2113852B1 (en)
GB (1) GB1364647A (en)
IT (1) IT940524B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111886668A (en) * 2018-03-23 2020-11-03 三菱电机株式会社 Trip device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5341211U (en) * 1976-09-16 1978-04-10

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111886668A (en) * 2018-03-23 2020-11-03 三菱电机株式会社 Trip device

Also Published As

Publication number Publication date
FR2113852B1 (en) 1976-07-23
DE2056867C3 (en) 1975-01-09
DE2056867B2 (en) 1973-03-15
DE2056867A1 (en) 1972-05-25
IT940524B (en) 1973-02-20
JPS5316512B1 (en) 1978-06-01
FR2113852A1 (en) 1972-06-30

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee