GB1442436A - Circuit breaker with overcurrent and auxiliary releases - Google Patents

Circuit breaker with overcurrent and auxiliary releases

Info

Publication number
GB1442436A
GB1442436A GB4126273A GB4126273A GB1442436A GB 1442436 A GB1442436 A GB 1442436A GB 4126273 A GB4126273 A GB 4126273A GB 4126273 A GB4126273 A GB 4126273A GB 1442436 A GB1442436 A GB 1442436A
Authority
GB
United Kingdom
Prior art keywords
actuator
arm
overcurrent
circuit breaker
release means
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
GB4126273A
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.)
Federal Pacific Electric Co
Original Assignee
Federal Pacific Electric Co
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 Federal Pacific Electric Co filed Critical Federal Pacific Electric Co
Publication of GB1442436A publication Critical patent/GB1442436A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • 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
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0264—Mountings or coverplates for complete assembled circuit breakers, e.g. snap mounting in panel
    • H01H71/0271—Mounting several complete assembled circuit breakers together
    • H01H2071/0278—Mounting several complete assembled circuit breakers together with at least one of juxtaposed casings dedicated to an auxiliary device, e.g. for undervoltage or shunt trip

Landscapes

  • Breakers (AREA)

Abstract

1442436 Automatic circuit breakers; releasing devices FEDERAL PACIFIC ELECTRIC CO 3 Sept 1973 [15 Sept 1972] 41262/73 Heading H1N A circuit breaker having a movable contact 10 on an arm 12 fixedly pivoted at 22 and acted on by a toggle linkage mechanism 28, 26, 18 through a movable coil spring pivot 20 is latched against a push-off spring 32 which snaps overcentre so that an end part 18a of the actuator 18 presses against the end of a bimetal 16 and the breaker is closed. On normal overcurrent the bimetal 16 is deflected downwards by thermal expansion and on heavy overcurrent it is attracted magnetically towards a soft magnetic pole 44 to release the latch and cause the breaker to open. Auxiliary release means are provided which is operable in response to an external signal derived from a current transformer 54, Fig. 1, which energizes an electromagnetic solenoid 56 having an armature 58 carrying an arm 62 which are all disposed in a cavity of the circuit breaker casing, Fig. 4, and are completely clear of the operational travel paths of the latching and release means previously referred to. When the auxiliary release means is energized the arm 62 acts upwardly to strike the end part 18a of the actuator 18 in an endwise manner, Fig. 3, and to enable the same latch to be released the actuator 18 is formed in two parts 18a, 18b, the former being slidable upon the latter and being normally biased to its latching position by a spring 18h.
GB4126273A 1972-09-15 1973-09-03 Circuit breaker with overcurrent and auxiliary releases Expired GB1442436A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28976372A 1972-09-15 1972-09-15

Publications (1)

Publication Number Publication Date
GB1442436A true GB1442436A (en) 1976-07-14

Family

ID=23112972

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4126273A Expired GB1442436A (en) 1972-09-15 1973-09-03 Circuit breaker with overcurrent and auxiliary releases

Country Status (9)

Country Link
US (1) US3784940A (en)
JP (1) JPS4968279A (en)
AU (1) AU472382B2 (en)
CA (1) CA982634A (en)
DE (1) DE2343908C2 (en)
ES (1) ES418018A1 (en)
FR (1) FR2200607B1 (en)
GB (1) GB1442436A (en)
ZA (1) ZA736013B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2295276A (en) * 1994-11-15 1996-05-22 Matsushita Electric Works Ltd Leakage-responsive circuit breaker

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2618288C3 (en) * 1976-04-27 1980-09-18 Brown, Boveri & Cie Ag, 6800 Mannheim Installation circuit breaker
US4316163A (en) * 1978-06-22 1982-02-16 Federal Pacific Electric Company Thermal-magnetic circuit breaker
DE3108393A1 (en) * 1981-03-05 1982-09-16 Siemens AG, 1000 Berlin und 8000 München "CIRCUIT BREAKER WITH TOTAL CURRENT ACCESSIBLE FROM THE OUTSIDE"
US4568899A (en) * 1984-03-27 1986-02-04 Siemens Aktiengesellschaft Ground fault accessory for a molded case circuit breaker
IT1223522B (en) * 1987-12-17 1990-09-19 Elettrocondutture DIFFERENTIAL CURRENT DETECTOR DEVICE IN ELECTRICAL SYSTEMS, STRUCTURED IN A WAY TO BE COUPLED, IN A CLOSED POSITION, TO NORMAL SWITCHES WITHOUT DANGER OF ACCIDENTAL ASSEMBLY ERRORS
US5162766A (en) * 1991-10-07 1992-11-10 General Electric Company Molded case circuit breaker with interchangeable trip circuits
US9362075B2 (en) * 2013-12-03 2016-06-07 General Electric Company Cover assembly for circuit breaker, circuit breaker having the same, and method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2700713A (en) * 1953-07-10 1955-01-25 Fed Electric Prod Co Automatic circuit breaker
NL193015A (en) * 1953-12-11
US2779831A (en) * 1954-06-14 1957-01-29 Gen Electric Multipole electric circuit breakers
US2860207A (en) * 1956-11-23 1958-11-11 Mc Graw Edison Co Circuit interrupter tripping relay
US3161747A (en) * 1961-07-10 1964-12-15 Fed Pacific Electric Co Automatic circuit breaker having a combined latch and contact unit pivoted to a contact carrier
US3256407A (en) * 1963-10-28 1966-06-14 Gen Electric Circuit breaker and accessory device combination
JPS4322734Y1 (en) * 1964-08-21 1968-09-25
US3663903A (en) * 1971-05-20 1972-05-16 Ite Imperial Corp Tripping system for circuit breaker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2295276A (en) * 1994-11-15 1996-05-22 Matsushita Electric Works Ltd Leakage-responsive circuit breaker
GB2295276B (en) * 1994-11-15 1998-10-14 Matsushita Electric Works Ltd Leakage-responsive circuit breaker

Also Published As

Publication number Publication date
US3784940A (en) 1974-01-08
FR2200607B1 (en) 1977-08-05
ES418018A1 (en) 1976-02-16
CA982634A (en) 1976-01-27
DE2343908A1 (en) 1974-03-21
FR2200607A1 (en) 1974-04-19
AU472382B2 (en) 1976-05-20
AU6019873A (en) 1975-03-13
JPS4968279A (en) 1974-07-02
ZA736013B (en) 1974-08-28
DE2343908C2 (en) 1982-12-30

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 19930902