GB1262963A - Improvements in or relating to circuit-breakers - Google Patents

Improvements in or relating to circuit-breakers

Info

Publication number
GB1262963A
GB1262963A GB02506/69A GB1250669A GB1262963A GB 1262963 A GB1262963 A GB 1262963A GB 02506/69 A GB02506/69 A GB 02506/69A GB 1250669 A GB1250669 A GB 1250669A GB 1262963 A GB1262963 A GB 1262963A
Authority
GB
United Kingdom
Prior art keywords
plate
contact
arm
contacts
lever
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
GB02506/69A
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.)
Hundt and Weber GmbH
Original Assignee
Hundt and Weber GmbH
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 Hundt and Weber GmbH filed Critical Hundt and Weber GmbH
Publication of GB1262963A publication Critical patent/GB1262963A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01H77/10—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 electrodynamic opening
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
    • H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
    • H01H1/225—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member the supporting member being pivotable

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

1,262,963. Automatic circuit-breakers; partly electromagnetic switches. HUNDT & WEBER G.m.b.H. 10 March, 1969 [8 March, 1968], No. 12506/69. Heading H1N. A contact piece 6 of the stationary contact 5 of an automatic circuit-breaker is arranged on a plate 7 extending in the direction of current flow along the movable contact member 3 so that, upon short circuit, electrodynamic repulsion between the plate 7 and the movable contact member 3 separates the contacts against the biasing force of the main latching mechanism (not shown). An auxiliary latch lever 18 holds the contacts apart in the intermediate position shown, and is releasable electromagnetically or manually to allow closing or reclosing. A rectilinearly moving armature 22 of an electromagnet 21 engages the latch lever 18 to release this auxiliary latch. The main closing action of the breaker, from fully-open position to the intermediate position, is done manually, or by pneumatic, hydraulic or electrical devices, or by a small high speed motor, or the auxiliary latch may be rendered inoperative and the main mechanism used to actually close the contacts. Normal electromagnetic release fully opens the contacts. Plate 7 terminates in a cross-piece 8 from which extend parallel conductor bars 9 leading to a connector piece 10 connected to the terminal 11, and the plate 7 rests on a leaf spring 12 which effects damping by friction. Contact 3 is resiliently mounted on its arm 2 by a compression spring 14, and arm 2 extends through a slot 13 of a carrier to which contact 3 is connected, to allow vertical play for the contact 3. A damping device 15 controls vibration. Mica sheets 16 insulate plate 7 and conductor bars 9 and protect against creepage. An arc chamber (not shown) is provided to de-ionize the arc blown into the chamber by the contact arrangement. In a multi-pole breaker with a common operating mechanism, the auxiliary latch lever 18 is provided for the central movable contact member only. Lever 18 is replaceable by two levers on either side of arm 2 operated by a single electromagnet 21. Lever 18 engages a transverse bar 26 on arm 2, and this bar may connect together all three arms 2.
GB02506/69A 1968-03-08 1969-03-10 Improvements in or relating to circuit-breakers Expired GB1262963A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH0065534 1968-03-08

Publications (1)

Publication Number Publication Date
GB1262963A true GB1262963A (en) 1972-02-09

Family

ID=7163212

Family Applications (1)

Application Number Title Priority Date Filing Date
GB02506/69A Expired GB1262963A (en) 1968-03-08 1969-03-10 Improvements in or relating to circuit-breakers

Country Status (4)

Country Link
US (1) US3559119A (en)
DE (1) DE1638042A1 (en)
FR (1) FR2003461A1 (en)
GB (1) GB1262963A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4513267A (en) * 1983-03-28 1985-04-23 Siemens-Allis, Inc. Stationary contact strap to achieve a current limiting blow-off effect
FR2556515B1 (en) * 1983-12-13 1987-01-16 Merlin Gerin METHOD AND DEVICE FOR FIXED ELECTRICAL CONNECTION OF BRAIDS ON CURRENT SUPPLY RANGES
DE3431581A1 (en) * 1984-08-28 1986-03-20 Friedrich Dipl.-Ing. 8033 Krailling Lauerer Electrical circuit breaker
US4612430A (en) * 1984-12-21 1986-09-16 Square D Company Anti-rebound latch
IT208625Z2 (en) * 1986-12-11 1988-05-28 Sace Spa FIXED CONTACT FOR LOW VOLTAGE SWITCHES.
DE3852455T2 (en) * 1987-10-01 1996-04-18 Cge-Compagnia Generale Elettromeccanica S.P.A., Mailand/Milano Manual and electromagnetically operated contact arrangement for current-limiting switches.
US5517164A (en) * 1995-06-19 1996-05-14 Eaton Corporation Molded case circuit breaker having movable contact finger releasably locked to an operating mechanism

Also Published As

Publication number Publication date
DE1638042A1 (en) 1971-07-01
US3559119A (en) 1971-01-26
FR2003461A1 (en) 1969-11-07

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