EP0656641A3 - Trip unit for circuit breaker or protective switches. - Google Patents

Trip unit for circuit breaker or protective switches. Download PDF

Info

Publication number
EP0656641A3
EP0656641A3 EP94118386A EP94118386A EP0656641A3 EP 0656641 A3 EP0656641 A3 EP 0656641A3 EP 94118386 A EP94118386 A EP 94118386A EP 94118386 A EP94118386 A EP 94118386A EP 0656641 A3 EP0656641 A3 EP 0656641A3
Authority
EP
European Patent Office
Prior art keywords
trip
switch
plunger
unit
circuit breaker
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.)
Granted
Application number
EP94118386A
Other languages
German (de)
French (fr)
Other versions
EP0656641A2 (en
EP0656641B1 (en
Inventor
Stefan Welker
Volker Heins
Wolfgang Dipl-Ing Kutsche
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.)
Eaton Industries GmbH
Original Assignee
Kloeckner Moeller 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 Kloeckner Moeller GmbH filed Critical Kloeckner Moeller GmbH
Publication of EP0656641A2 publication Critical patent/EP0656641A2/en
Publication of EP0656641A3 publication Critical patent/EP0656641A3/en
Application granted granted Critical
Publication of EP0656641B1 publication Critical patent/EP0656641B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01H83/12—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by voltage falling below a predetermined value, e.g. for no-volt protection

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Keying Circuit Devices (AREA)
  • Breakers (AREA)

Abstract

A trip unit (release unit) for a power circuit breaker or a protective switch, in particular as an undervoltage trip device which interacts with the switch drive mechanism in such a manner that, if the voltage is not sufficient, the trip unit unlatches the switch drive mechanism immediately, the trip unit having a trip coil 21, which is designed as a plunger-type armature coil and has a trip plunger 20 which is prestressed in the trip direction 30 by means of a compression spring and is inserted in a magnetic store housing, the end 2 of an arm 1b of a clamping lever 1, which is designed as a rocker, being pressed (during opening of the switch or when the locking mechanism is open) by a compression spring 5 into a cutout 32 which is located in a control cam 31 of the switch, such that the other arm 1a of the clamping lever 1 rotates the trip lever 12 in such a manner that the trip lever 12 is pivoted about its shaft 13 and, in consequence, presses the trip plunger 20 into the magnetic store housing 21. <IMAGE>
EP94118386A 1993-12-03 1994-11-23 Trip unit for circuit breaker or protective switches Expired - Lifetime EP0656641B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4341214A DE4341214C2 (en) 1993-12-03 1993-12-03 Tripping unit for circuit breakers or circuit breakers
DE4341214 1993-12-03

Publications (3)

Publication Number Publication Date
EP0656641A2 EP0656641A2 (en) 1995-06-07
EP0656641A3 true EP0656641A3 (en) 1997-05-28
EP0656641B1 EP0656641B1 (en) 1999-04-14

Family

ID=6504088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94118386A Expired - Lifetime EP0656641B1 (en) 1993-12-03 1994-11-23 Trip unit for circuit breaker or protective switches

Country Status (3)

Country Link
EP (1) EP0656641B1 (en)
AT (1) ATE179024T1 (en)
DE (2) DE4341214C2 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5834996A (en) * 1996-04-18 1998-11-10 Ellenberger & Poensgen Gmbh Electric switch having undervoltage tripping
DE59608320D1 (en) * 1996-06-10 2002-01-10 Siemens Ag Undervoltage release
DE19735413B4 (en) * 1997-08-14 2007-11-29 Siemens Ag Tripping device for a circuit breaker
DE10145059C1 (en) * 2001-09-13 2003-03-13 Moeller Gmbh Multi-pole switching device provided with interchangable undervoltage release with integrated auxiliary switch operated in released position
US8087977B2 (en) 2005-05-13 2012-01-03 Black & Decker Inc. Angle grinder
DE102009059839A1 (en) 2009-12-21 2011-06-22 Eaton Industries GmbH, 53115 Device for use with e.g. electrical switching device for detecting reversal of current direction in photovoltaic strand, has magnetically polarized armature operatively connected with actuator
KR101212213B1 (en) 2011-07-15 2012-12-13 엘에스산전 주식회사 Apparatus of modular trip mechanism and accessory mechanism for circuit breaker
JP5747806B2 (en) * 2011-12-14 2015-07-15 三菱電機株式会社 Circuit breaker
KR101297549B1 (en) * 2011-12-30 2013-08-14 엘에스산전 주식회사 Trip device of short voltage for molded case circuit breaker
DE102014202485B4 (en) 2014-02-12 2021-08-05 Siemens Aktiengesellschaft Release device
US10818450B2 (en) 2017-06-14 2020-10-27 Black & Decker Inc. Paddle switch

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4097831A (en) * 1977-01-21 1978-06-27 General Electric Company Circuit breaker accessory tripping apparatus
GB1558785A (en) * 1975-07-11 1980-01-09 Westinghouse Electric Corp Circuit breaker with trip actuator and under voltage release mechanism
US4246558A (en) * 1979-01-22 1981-01-20 Gould Inc. Auxiliary feature modules for circuit breakers
US5093643A (en) * 1990-10-22 1992-03-03 Westinghouse Electric Corp. Undervoltage release device assembly for circuit breaker
EP0525691A2 (en) * 1991-07-31 1993-02-03 Moeller GmbH Trip unit for circuit breakers and protective switches, in particular implemented as an under-voltage trip unit

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3928826A (en) * 1974-05-30 1975-12-23 Westinghouse Electric Corp Circuit breaker with improved tripped latch means

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1558785A (en) * 1975-07-11 1980-01-09 Westinghouse Electric Corp Circuit breaker with trip actuator and under voltage release mechanism
US4097831A (en) * 1977-01-21 1978-06-27 General Electric Company Circuit breaker accessory tripping apparatus
US4246558A (en) * 1979-01-22 1981-01-20 Gould Inc. Auxiliary feature modules for circuit breakers
US5093643A (en) * 1990-10-22 1992-03-03 Westinghouse Electric Corp. Undervoltage release device assembly for circuit breaker
EP0525691A2 (en) * 1991-07-31 1993-02-03 Moeller GmbH Trip unit for circuit breakers and protective switches, in particular implemented as an under-voltage trip unit

Also Published As

Publication number Publication date
DE59408114D1 (en) 1999-05-20
EP0656641A2 (en) 1995-06-07
EP0656641B1 (en) 1999-04-14
DE4341214A1 (en) 1995-06-08
ATE179024T1 (en) 1999-04-15
DE4341214C2 (en) 1996-11-07

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