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FR1180763A - Advanced device to protect electrical circuits - Google Patents

Advanced device to protect electrical circuits

Info

Publication number
FR1180763A
FR1180763A FR1180763DA FR1180763A FR 1180763 A FR1180763 A FR 1180763A FR 1180763D A FR1180763D A FR 1180763DA FR 1180763 A FR1180763 A FR 1180763A
Authority
FR
France
Prior art keywords
electrical circuits
protect electrical
advanced device
advanced
protect
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
Other languages
French (fr)
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.)
Dewhurst and Partner PLC
Original Assignee
Dewhurst and Partner PLC
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 Dewhurst and Partner PLC filed Critical Dewhurst and Partner PLC
Application granted granted Critical
Publication of FR1180763A publication Critical patent/FR1180763A/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
    • H01H83/20—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
    • H01H83/22—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 the other condition being imbalance of two or more currents or voltages
    • H01H83/223—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 the other condition being imbalance of two or more currents or voltages with bimetal elements
    • 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
    • H01H73/22—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 having electrothermal release and no other automatic release
    • H01H73/30—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 having electrothermal release and no other automatic release reset by push-button, pull-knob or slide
FR1180763D 1955-01-18 1957-07-24 Advanced device to protect electrical circuits Expired FR1180763A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB150655A GB818561A (en) 1955-01-18 1955-01-18 Improvements in or relating to devices for affording protection to electric circuits

Publications (1)

Publication Number Publication Date
FR1180763A true FR1180763A (en) 1959-06-09

Family

ID=9723166

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1180763D Expired FR1180763A (en) 1955-01-18 1957-07-24 Advanced device to protect electrical circuits

Country Status (5)

Country Link
BE (1) BE559850A (en)
DE (1) DE1072716B (en)
FR (1) FR1180763A (en)
GB (1) GB818561A (en)
NL (1) NL102152C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110085491B (en) * 2019-05-20 2020-11-20 西安邮电大学 a safety switch

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL32695C (en) * 1930-04-01
GB473778A (en) * 1936-05-28 1937-10-20 Brookhirst Switchgear Ltd Improvements in or relating to apparatus for protecting poly-phase alternating current electric circuits

Also Published As

Publication number Publication date
DE1072716B (en) 1960-01-07
GB818561A (en) 1959-08-19
BE559850A (en) 1957-08-31
NL102152C (en) 1962-08-15

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