GB852427A - Current-responsive electric circuit-breaking device - Google Patents

Current-responsive electric circuit-breaking device

Info

Publication number
GB852427A
GB852427A GB375257D GB375257D GB852427A GB 852427 A GB852427 A GB 852427A GB 375257 D GB375257 D GB 375257D GB 375257 D GB375257 D GB 375257D GB 852427 A GB852427 A GB 852427A
Authority
GB
United Kingdom
Prior art keywords
contact
switch
end cap
contacts
thermal element
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
GB375257D
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 GB852427A publication Critical patent/GB852427A/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
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • 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
    • 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
    • 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
    • H01H73/62—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 having only electrothermal release
    • 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
    • H01H77/04—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 electrothermal opening

Landscapes

  • Thermally Actuated Switches (AREA)

Abstract

852,427. Thermal switches. DEYRAIL, C. Dec. 2, 1957, No. 37527/57. Class 38 (5). A current-responsive switch comprises a tubular casing having a terminal end cap at each end, a contact-carrying thermal element normally engaging a contact on a resilient member held under compression between a pair of supports, so that deformation of the element displaces the resilient member across dead centre to open the contacts rapidly. In Fig. 1, the thermal element is a bi-metal 19 connected to end cap 2 and carrying a contact 7 co-operating with contact 6 on a snap-acting strip 14, the contacts being reclosed by a resetting button 8a. A blow-out coil 18 is connected in series with the contacts. In a modification, Fig. 2 (not shown), when the strip 14 carries an additional contact co-operating with a contact on a similar thermal element connected to the opposite end cap 1 of the casing, so that the switch is rendered operative again by reversing it physically in its terminals. This arrangement may have two blow-out coils, one of which is connected in each position of the switch. In an alternative arrangement, a switch similar to that of Fig. 2 is mounted between two terminals connected through a change-over switch to a supply terminal.
GB375257D 1957-12-02 1957-12-02 Current-responsive electric circuit-breaking device Expired GB852427A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB212560A GB867068A (en) 1957-12-02 1957-12-02 Automatic circuit-breaking device

Publications (1)

Publication Number Publication Date
GB852427A true GB852427A (en) 1960-10-26

Family

ID=9734040

Family Applications (2)

Application Number Title Priority Date Filing Date
GB212560A Expired GB867068A (en) 1957-12-02 1957-12-02 Automatic circuit-breaking device
GB375257D Expired GB852427A (en) 1957-12-02 1957-12-02 Current-responsive electric circuit-breaking device

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB212560A Expired GB867068A (en) 1957-12-02 1957-12-02 Automatic circuit-breaking device

Country Status (5)

Country Link
BE (1) BE562855A (en)
CH (1) CH344125A (en)
FR (1) FR1161508A (en)
GB (2) GB867068A (en)
NL (1) NL222859A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2138634A (en) * 1983-03-30 1984-10-24 Airpax Corp PC-Board Mounted Thermal Switch
US4510479A (en) * 1983-03-30 1985-04-09 Airpax Corporation PC-board mounted thermal breaker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2138634A (en) * 1983-03-30 1984-10-24 Airpax Corp PC-Board Mounted Thermal Switch
US4510479A (en) * 1983-03-30 1985-04-09 Airpax Corporation PC-board mounted thermal breaker

Also Published As

Publication number Publication date
FR1161508A (en) 1958-09-01
NL222859A (en)
BE562855A (en)
CH344125A (en) 1960-01-31
GB867068A (en) 1961-05-03

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