FR854878A - Automatic switch for three-phase current - Google Patents

Automatic switch for three-phase current

Info

Publication number
FR854878A
FR854878A FR854878DA FR854878A FR 854878 A FR854878 A FR 854878A FR 854878D A FR854878D A FR 854878DA FR 854878 A FR854878 A FR 854878A
Authority
FR
France
Prior art keywords
phase current
automatic switch
automatic
switch
phase
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)
Inventor
Giacomo Massa
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 filed Critical
Application granted granted Critical
Publication of FR854878A publication Critical patent/FR854878A/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
    • H01H73/22—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
    • H01H73/28—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 rotatable knob or wheel
FR854878D 1938-06-11 1939-05-17 Automatic switch for three-phase current Expired FR854878A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT854878X 1938-06-11

Publications (1)

Publication Number Publication Date
FR854878A true FR854878A (en) 1940-04-26

Family

ID=11327074

Family Applications (1)

Application Number Title Priority Date Filing Date
FR854878D Expired FR854878A (en) 1938-06-11 1939-05-17 Automatic switch for three-phase current

Country Status (1)

Country Link
FR (1) FR854878A (en)

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