GB998276A - Electric overload tripping relay - Google Patents

Electric overload tripping relay

Info

Publication number
GB998276A
GB998276A GB31177/61A GB3117761A GB998276A GB 998276 A GB998276 A GB 998276A GB 31177/61 A GB31177/61 A GB 31177/61A GB 3117761 A GB3117761 A GB 3117761A GB 998276 A GB998276 A GB 998276A
Authority
GB
United Kingdom
Prior art keywords
lever
spring
engages
levers
contact
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
GB31177/61A
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.)
Schneider Electric USA Inc
Original Assignee
Square D 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
Application filed by Square D Co filed Critical Square D Co
Publication of GB998276A publication Critical patent/GB998276A/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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/20—Electrothermal mechanisms with fusible mass
    • H01H71/205—Electrothermal mechanisms with fusible mass using a ratchet wheel kept against rotation by solder
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
    • H01H51/10—Contacts retained open or closed by a latch which is controlled by an electromagnet
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)

Abstract

998,276. Electrically - tripped switches. SQUARE D CO. Aug. 30, 1961 [Dec. 22, 1960], No. 31177/61. Heading H2B. A circuit-breaker has a tripping mechanism, including two levers pivoted on a common movable member and biased so that when one of the levers is released by the overload responsive assembly the common member is moved by the biasing means to allow the circuitbreaker contacts to open. As shown, the common member is a pin 65 movable in slots in casing parts and carrying a lever 61 having a boss 61a on which the lever 60 is mounted. A leaf spring 67 engages a limb 62 of the lever 61 so that a projection 64 on the other limb 63 of the lever 61 is urged against and retained by a toothed wheel 25 of a " solder pot " overload assembly (not shown). A spring 68 urges lever 60 clockwise (Fig. 3) about the pin 65 so that its leg 58 engages a contact spring 45 to urge it into engagement with a fixed contact 51. When the solder melts to allow rotation of the wheel 25 and upward movement of the lever 61 the movement of the pin 65 causes the lever 60 to rotate about a casing projection 76 to allow the moving contact spring to disengage contact 51 and engage a contact 50. After such tripping action (Fig. 6, not shown), the circuitbreaker can be reclosed by depression and release of an actuator 33 which when moved downwards engages the end 74 of the line 59 of the lever 60 to move the levers 60, 61 downward. When the actuator 33 is released for return movement due to its biasing spring 71 the projection 64 engages the wheel 25 to stop the upward movement of the levers 60, 61 and the spring 68 turns the lever 60 to the position shown to close contacts 45, 51.
GB31177/61A 1960-12-22 1961-08-30 Electric overload tripping relay Expired GB998276A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US77696A US3147351A (en) 1960-12-22 1960-12-22 Trip free overload relay

Publications (1)

Publication Number Publication Date
GB998276A true GB998276A (en) 1965-07-14

Family

ID=22139544

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31177/61A Expired GB998276A (en) 1960-12-22 1961-08-30 Electric overload tripping relay

Country Status (2)

Country Link
US (1) US3147351A (en)
GB (1) GB998276A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3258566A (en) * 1963-12-04 1966-06-28 Square D Co Switch mechanism

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1844491A (en) * 1928-08-08 1932-02-09 Allen Bradley Co Overload relay
US2133400A (en) * 1936-06-12 1938-10-18 Ranco Inc Control apparatus
US2212732A (en) * 1937-03-31 1940-08-27 Lyman C Fisher Circuit breaker
US2214695A (en) * 1938-03-19 1940-09-10 Westinghouse Electric & Mfg Co Circuit breaker
US2427437A (en) * 1944-02-10 1947-09-16 Square D Co Electric relay
US2532265A (en) * 1949-01-19 1950-11-28 Gen Electric Thermal overload protective relay using indium
US2701829A (en) * 1951-08-03 1955-02-08 Cutler Hammer Inc Manually operable circuit breaker
US2813951A (en) * 1953-10-16 1957-11-19 Cutler Hammer Inc Circuit breaker
US2785268A (en) * 1954-05-17 1957-03-12 Blair Thermostat Products Inc Automatic stove
US2802080A (en) * 1955-03-11 1957-08-06 Zinsco Electrical Products Circuit breaker
US2955177A (en) * 1958-07-08 1960-10-04 Wood Electric Co Inc Circuit breaker
US2971072A (en) * 1959-04-17 1961-02-07 Furnas Electric Co Thermal overload and reset assembly
US2972664A (en) * 1959-06-08 1961-02-21 Furnas Electric Co Manual motor starter with overload protection

Also Published As

Publication number Publication date
US3147351A (en) 1964-09-01

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