GB925064A - Improvements in circuit breakers having thermal overload release means - Google Patents

Improvements in circuit breakers having thermal overload release means

Info

Publication number
GB925064A
GB925064A GB1569161A GB1569161A GB925064A GB 925064 A GB925064 A GB 925064A GB 1569161 A GB1569161 A GB 1569161A GB 1569161 A GB1569161 A GB 1569161A GB 925064 A GB925064 A GB 925064A
Authority
GB
United Kingdom
Prior art keywords
circuit
breaker
length
metallic element
circuit breakers
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
GB1569161A
Inventor
Alexander Roy Norden
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
Priority to US792068A priority Critical patent/US3004122A/en
Application filed by Federal Pacific Electric Co filed Critical Federal Pacific Electric Co
Priority to GB1569161A priority patent/GB925064A/en
Priority to DE1961F0020387 priority patent/DE1840992U/en
Publication of GB925064A publication Critical patent/GB925064A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/60—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism cartridge type, e.g. screw-in cartridge
    • 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
    • H01H71/16—Electrothermal mechanisms with bimetal element

Landscapes

  • Thermally Actuated Switches (AREA)
  • Breakers (AREA)

Abstract

925,064. Automatic circuit - breakers. FEDERAL PACIFIC ELECTRIC CO. May 1, 1961, No. 15691/61. Class 38 (5). In a circuit-breaker such as that of Specification 739,620, the bi-metallic element 35 is divided longitudinally into three series-connected lengths 36, 42, 44, the centre length 36 being riveted to the contact-carrying member 22 at one end and the other end latching an actuator 30. The terminal end of the length 44 is connected to a conducting braid 46 which is connected to a terminal of the circuit-breaker. The heat produced by the current in the lengths 42, 44 reduce the heat dissipation from the centre " active " length 36 of the bi-metallic element and permit the use of a relatively heavy bi-metallic element in a low-rated circuit-breaker.
GB1569161A 1959-02-09 1961-05-01 Improvements in circuit breakers having thermal overload release means Expired GB925064A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US792068A US3004122A (en) 1959-02-09 1959-02-09 Low-rated circuit breakers
GB1569161A GB925064A (en) 1961-05-01 1961-05-01 Improvements in circuit breakers having thermal overload release means
DE1961F0020387 DE1840992U (en) 1961-05-01 1961-06-24 DISCONNECTORS FOR LOW PERFORMANCE.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1569161A GB925064A (en) 1961-05-01 1961-05-01 Improvements in circuit breakers having thermal overload release means

Publications (1)

Publication Number Publication Date
GB925064A true GB925064A (en) 1963-05-01

Family

ID=10063713

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1569161A Expired GB925064A (en) 1959-02-09 1961-05-01 Improvements in circuit breakers having thermal overload release means

Country Status (1)

Country Link
GB (1) GB925064A (en)

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