GB722615A - Improvements in and relating to automatic electric switches having overload release means - Google Patents

Improvements in and relating to automatic electric switches having overload release means

Info

Publication number
GB722615A
GB722615A GB8840/52A GB884052A GB722615A GB 722615 A GB722615 A GB 722615A GB 8840/52 A GB8840/52 A GB 8840/52A GB 884052 A GB884052 A GB 884052A GB 722615 A GB722615 A GB 722615A
Authority
GB
United Kingdom
Prior art keywords
coil
relating
release means
automatic electric
electric switches
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
GB8840/52A
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
Priority claimed from GB706452A external-priority patent/GB721300A/en
Application filed by Individual filed Critical Individual
Publication of GB722615A publication Critical patent/GB722615A/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
    • H01H73/48—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 both electrothermal and electromagnetic automatic release
    • H01H73/50—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 both electrothermal and electromagnetic automatic release reset by lever
    • 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
    • H01H73/48—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 both electrothermal and electromagnetic automatic release
    • H01H73/56—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 both electrothermal and electromagnetic automatic release reset by push-button, pull-knob or slide

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Electromagnets (AREA)

Abstract

722,615. Automatic circuit-breakers. LEYHAUSEN, W. April 7, 1952, No. 8840/52. Addition to 721,300. Drawings to Specification. Class 38 (5) In the switch of the main patent, the contact chamber is arranged to have a cross sectional area not less than that of the magnetic coil and a width not greater than 6 m.m., the ratio of this width to the effective axial length of the coil being not less than 0.8 and the ratio of the diameter of the coil to the axial length of the coil being greater than 3. The Specification describes and illustrates several modified arrangements of the switch of the main patent.
GB8840/52A 1951-09-28 1952-04-07 Improvements in and relating to automatic electric switches having overload release means Expired GB722615A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2721241X 1951-09-28
GB706452A GB721300A (en) 1952-03-19 1952-03-19 Improvements in automatic electric switches having overload release means

Publications (1)

Publication Number Publication Date
GB722615A true GB722615A (en) 1955-01-26

Family

ID=32299375

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8840/52A Expired GB722615A (en) 1951-09-28 1952-04-07 Improvements in and relating to automatic electric switches having overload release means

Country Status (6)

Country Link
US (1) US2721241A (en)
BE (2) BE502971A (en)
CH (2) CH292221A (en)
FR (2) FR1046582A (en)
GB (1) GB722615A (en)
NL (1) NL83752C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1072713B (en) * 1960-01-07 VEB Elektroinstallation Annaberg, Annaberg-Buchhol'z (Erzgeb.) Small self switch
DE1052532B (en) * 1954-07-13 1959-03-12 Siemens Ag Small auto switch with cover cap
US3688234A (en) * 1970-04-27 1972-08-29 Matsushita Electric Works Ltd Push button type circuit protector
FR2516304A1 (en) * 1981-11-09 1983-05-13 Telemecanique Electrique MECHANICAL CONTROL SWITCH AND AUTOMATIC OPENING

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2456945A (en) * 1944-05-16 1948-12-21 Westinghouse Electric Corp Relay
US2573306A (en) * 1948-08-11 1951-10-30 Gen Electric Electric circuit breaker
US2494868A (en) * 1948-09-14 1950-01-17 Trumbull Electric Mfg Co Circuit breaker

Also Published As

Publication number Publication date
FR1046582A (en) 1953-12-08
BE510864A (en)
BE502971A (en)
FR62685E (en) 1955-06-16
CH292221A (en) 1953-07-31
US2721241A (en) 1955-10-18
CH307222A (en) 1955-05-15
NL83752C (en)

Similar Documents

Publication Publication Date Title
GB622382A (en) Improvements in or relating to electric circuit-breakers having arc-extinguishing means
GB722615A (en) Improvements in and relating to automatic electric switches having overload release means
GB1235203A (en) Improved gas blast circuit breakers
GB1163764A (en) Push Button Electrical Switch Control
GB686222A (en) Improvements in or relating to multiple pole automatic electric switches with magnetic and thermal tripping members
GB730538A (en) Improvements in or relating to arc chutes in electric circuit interrupters
GB748748A (en) Improvements in or relating to lever operated electric switches
GB572489A (en) Improvements in and relating to gas-blast circuit breakers
GB551966A (en) Improvements in air-break electric circuit breakers
SU74141A1 (en) Intrinsically Safe High Voltage Switchgear
GB537356A (en) Improvements relating to contacts for electric circuit breakers
CA457398A (en) Selecting and actuating mechanism for electric switches
GB582267A (en) Improvements in or relating to quick make and break electrical switches
GB945979A (en) Improvements in or relating to high-voltage gas-blast electric circuit-breakers
GB713789A (en) Electric circuit breakers having arc-quenching means
GB674119A (en) Improvements in electrically tripped switches
CA470793A (en) Push-button electrical switches
GB741926A (en) Improvements relating to dolly-operated electric switches
GB601838A (en) Improvements in and relating to electric switches having arc-rupturing devices
CA476792A (en) Electrical switch actuating means
CA468004A (en) Push pull selector switches
CA466584A (en) Electric circuit-breaker of the gas-blast type
GB775450A (en) Improvements relating to electric automatic circuit breakers
GB719856A (en) Improvements in or relating to electric circuit breakers of the oil immersed type
GB872233A (en) Electric switch