GB1484359A - Trip means for circuit breakers and circuit breakers incorporating such trip means - Google Patents
Trip means for circuit breakers and circuit breakers incorporating such trip meansInfo
- Publication number
- GB1484359A GB1484359A GB3900674A GB3900674A GB1484359A GB 1484359 A GB1484359 A GB 1484359A GB 3900674 A GB3900674 A GB 3900674A GB 3900674 A GB3900674 A GB 3900674A GB 1484359 A GB1484359 A GB 1484359A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit breaker
- trip
- compensating element
- circuit breakers
- bimetal strip
- 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
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
- H01H71/16—Electrothermal mechanisms with bimetal element
- H01H71/162—Electrothermal mechanisms with bimetal element with compensation for ambient temperature
-
- 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
- H01H71/40—Combined electrothermal and electromagnetic mechanisms
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
Abstract
1484359 Automatic circuit breakers FUCHS ELECTRICAL INDUSTRIES (PTY) Ltd 6 Sept 1974 39006/74 Heading H1N A trip arrangement for a circuit breaker comprises a thermally sensitive bimetal strip 7 connected in series with a fixed and a movable contact 2, 3 of the circuit breaker, a magnetic material polepiece 21 mounted on the bimetal strip, and an armature 17 pivotally mounted on a temperature compensating element 16 which is connected to a latching member 11 latching the circuit breaker mechanism 15, the armature being attracted to the polepiece when overloadcurrent above a threshold value flows in the bimetal strip, to displace the latching member 11 via the compensating element 16 to trip the circuit breaker, and the bimetal strip 7 deflecting to displace the latching member 11 again via the compensating element 16 to trip the circuit breaker when a persistent overload current below the threshold value flows in it. The temperature compensating element 16 is also a bimetallic strip, and this deflects in sympathy with the bimetallic strip 7 under ambient temperatures to make the operation of the trip arrangement independent of ambient temperature.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3900674A GB1484359A (en) | 1974-09-06 | 1974-09-06 | Trip means for circuit breakers and circuit breakers incorporating such trip means |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3900674A GB1484359A (en) | 1974-09-06 | 1974-09-06 | Trip means for circuit breakers and circuit breakers incorporating such trip means |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1484359A true GB1484359A (en) | 1977-09-01 |
Family
ID=10407037
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3900674A Expired GB1484359A (en) | 1974-09-06 | 1974-09-06 | Trip means for circuit breakers and circuit breakers incorporating such trip means |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1484359A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8872606B1 (en) | 2013-04-23 | 2014-10-28 | Eaton Corporation | Bimetal and magnetic armature providing an arc splatter resistant offset therebetween, and circuit breaker including the same |
-
1974
- 1974-09-06 GB GB3900674A patent/GB1484359A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8872606B1 (en) | 2013-04-23 | 2014-10-28 | Eaton Corporation | Bimetal and magnetic armature providing an arc splatter resistant offset therebetween, and circuit breaker including the same |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |