ZA756055B - An improvement in or relating to circuit breaker with one-way adjustment of tripping current level - Google Patents

An improvement in or relating to circuit breaker with one-way adjustment of tripping current level

Info

Publication number
ZA756055B
ZA756055B ZA00756055A ZA756055A ZA756055B ZA 756055 B ZA756055 B ZA 756055B ZA 00756055 A ZA00756055 A ZA 00756055A ZA 756055 A ZA756055 A ZA 756055A ZA 756055 B ZA756055 B ZA 756055B
Authority
ZA
South Africa
Prior art keywords
relating
improvement
circuit breaker
current level
tripping current
Prior art date
Application number
ZA00756055A
Other languages
English (en)
Inventor
A Maier
A Hendry
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of ZA756055B publication Critical patent/ZA756055B/xx

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
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H71/7418—Adjusting both electrothermal and electromagnetic mechanism
    • 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
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H2071/7481—Means for adjusting the conditions under which the device will function to provide protection with indexing means for magnetic or thermal tripping adjustment knob

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Emergency Protection Circuit Devices (AREA)
ZA00756055A 1974-10-10 1975-09-23 An improvement in or relating to circuit breaker with one-way adjustment of tripping current level ZA756055B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/513,784 US3975701A (en) 1974-10-10 1974-10-10 Circuit breaker with one-way adjustment of tripping current level

Publications (1)

Publication Number Publication Date
ZA756055B true ZA756055B (en) 1976-09-29

Family

ID=24044671

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00756055A ZA756055B (en) 1974-10-10 1975-09-23 An improvement in or relating to circuit breaker with one-way adjustment of tripping current level

Country Status (13)

Country Link
US (1) US3975701A (pt)
JP (1) JPS5163473A (pt)
AU (1) AU501682B2 (pt)
BE (1) BE834373A (pt)
BR (1) BR7506517A (pt)
CA (1) CA1058262A (pt)
DE (1) DE2544502A1 (pt)
ES (1) ES441652A1 (pt)
FR (1) FR2287768A1 (pt)
GB (1) GB1516155A (pt)
IT (1) IT1050988B (pt)
NZ (1) NZ178839A (pt)
ZA (1) ZA756055B (pt)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2805181C2 (de) * 1978-02-03 1979-12-13 Siemens Ag, 1000 Berlin Und 8000 Muenchen Einstellvorrichtung mit Raststufen für Auslöser elektrischer Schaltgeräte
JPH0218510Y2 (pt) * 1984-12-06 1990-05-23
GB2212663A (en) * 1987-11-20 1989-07-26 Westinghouse Electric Corp Circuit breaker with adjustable rating selector
US5821485A (en) * 1997-04-25 1998-10-13 General Electric Company Circuit breaker electronic trip unit with adjustable settings

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3240903A (en) * 1961-11-15 1966-03-15 Westinghouse Electric Corp Circuit interrupter with thermal trip means
US3593234A (en) * 1970-02-09 1971-07-13 Cutler Hammer Inc Trip adjustment means for instantaneous trip circuit breaker

Also Published As

Publication number Publication date
BR7506517A (pt) 1976-08-17
US3975701A (en) 1976-08-17
GB1516155A (en) 1978-06-28
IT1050988B (it) 1981-03-20
FR2287768A1 (fr) 1976-05-07
AU501682B2 (en) 1979-06-28
JPS5163473A (pt) 1976-06-01
CA1058262A (en) 1979-07-10
NZ178839A (en) 1978-06-02
DE2544502A1 (de) 1976-04-22
BE834373A (fr) 1976-04-12
AU8549675A (en) 1977-04-21
ES441652A1 (es) 1977-04-16

Similar Documents

Publication Publication Date Title
ZA754336B (en) An improvement in or relating to current sensitive circuit protection system
ZA761088B (en) An improvement in or relating to multipole ground fault circuit breaker
CA1012592A (en) Circuit breaker with electrical and mechanical trip indication
AU8450675A (en) Self adjusting circuit breaker with rotating trip assembly
ZA767616B (en) An improvement in or relating to electric circuit breaker
ZA765329B (en) An improvement in or relating to current limiting circuit breaker
ZA755455B (en) An improvement in or relating to multi-pole electric circuit breaker arrangement
NZ181219A (en) Circuit breaker with under voltage tripping
ZA744704B (en) An improvement in or relating to circuit breaker assembly with improved tripping mechanism
ZA712375B (en) An improvement in or relating to circuit breaker including improved current auctioneering circuit
AU497521B2 (en) Circuit breaker with adjustable thermal trip
ZA753218B (en) An improvement in or relating to circuit breaker with improved tripped latch means
ZA756055B (en) An improvement in or relating to circuit breaker with one-way adjustment of tripping current level
ZA755579B (en) An improvement in or relating to circuit breaker with improved trip means
ZA756056B (en) An improvement in or relating to manually operable circuit interrupter with automatic current overload protection
ZA76625B (en) An improvement in or relating to multi-pole circuit breaker with adjustable thermal trip unit
ZA765654B (en) An improvement in or relating to ground fault circuit interrupter with trip level adjustment
ZA762506B (en) An improvement in or relating to circuit breaker
ZA717897B (en) Improvements in or relating to fault current circuit breakers
ZA772369B (en) An improvement in or relating to circuit breaker
ZA772344B (en) Improvements in or relating to gasblast circuit breakers
ZA757120B (en) Improvements in or relating to automatic circuit breakers
AU1590676A (en) Improvements in or relating to circuit breaker line terminal
AT334459B (de) Fehlerstromschutzschalter mit auslosetaste
ZA741620B (en) An improvement in or relating to circuit breaker trip and latch mechanism