GB266010A - Improvements in automatic quick acting circuit breaking devices - Google Patents

Improvements in automatic quick acting circuit breaking devices

Info

Publication number
GB266010A
GB266010A GB4266/27A GB426627A GB266010A GB 266010 A GB266010 A GB 266010A GB 4266/27 A GB4266/27 A GB 4266/27A GB 426627 A GB426627 A GB 426627A GB 266010 A GB266010 A GB 266010A
Authority
GB
United Kingdom
Prior art keywords
contact
arm
serves
circuit
current
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
GB4266/27A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB266010A publication Critical patent/GB266010A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01H77/10—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 electrodynamic opening

Abstract

266,010. Branchu, P. J. Feb. 15, 1926, [Convention date]. Switches, electromagnetic. - The quick action characteristics of the circuit-breaking device described in Specification 250,570 (in which a light contact-member is moved rapidly by the reaction of the current therein with a fixed magnetic field) are improved by employing a second quick-acting switch which, when the first switch is moved to the off position, serves to hold it there. The main circuit to be controlled is from the fixed contact 6 to movable contact-arm 2 and through the magnetizing windings of the core structure a which, in the form shown, is common to the two switches. When, with excess current, the contact-arm 2 breaks the main circuit, it still remains in engagement with an auxiliary long contact 7 with which the second contact-arm 8 engages the circuit is now through the resistance 11, arm 8, contact 7, arm 2 and the magnetizing windings. This reduced current serves to move the arm 8 in the clockwise direction and the lost motion in the slotted link 14 connecting together the two contact-arms is taken up. The second contact-arm therefore serves, to reinforce the off position of the main contact-arm when the reduced current is operative. A resistance may be connected in shunt with the contact-arm 2 whereby the action is expedited in the event of rapidly-increasing currents and at the same time an improved blow-out effect is obtained.
GB4266/27A 1926-02-15 1927-02-15 Improvements in automatic quick acting circuit breaking devices Expired GB266010A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE266010X 1926-02-15

Publications (1)

Publication Number Publication Date
GB266010A true GB266010A (en) 1927-07-07

Family

ID=3866817

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4266/27A Expired GB266010A (en) 1926-02-15 1927-02-15 Improvements in automatic quick acting circuit breaking devices

Country Status (2)

Country Link
FR (1) FR629040A (en)
GB (1) GB266010A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3815059A (en) * 1972-12-01 1974-06-04 Westinghouse Electric Corp Circuit interrupter comprising electromagnetic opening means

Also Published As

Publication number Publication date
FR629040A (en) 1927-11-03

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