GB950814A - Improvements in tripping mechanism for an electric circuit breaker - Google Patents
Improvements in tripping mechanism for an electric circuit breakerInfo
- Publication number
- GB950814A GB950814A GB1945562A GB1945562A GB950814A GB 950814 A GB950814 A GB 950814A GB 1945562 A GB1945562 A GB 1945562A GB 1945562 A GB1945562 A GB 1945562A GB 950814 A GB950814 A GB 950814A
- Authority
- GB
- United Kingdom
- Prior art keywords
- armature
- cam
- bimetal
- breaker
- adjustable
- 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
- H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
- H01H71/7463—Adjusting only the electromagnetic mechanism
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H69/00—Apparatus or processes for the manufacture of emergency protective devices
- H01H69/01—Apparatus or processes for the manufacture of emergency protective devices for calibrating or setting of devices to function under predetermined conditions
- H01H2069/013—Apparatus or processes for the manufacture of emergency protective devices for calibrating or setting of devices to function under predetermined conditions with calibrating screws in trip bar
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
Abstract
950,814. Automatic circuit breakers. GENERAL ELECTRIC CO. May 21, 1962, No. 19455/62. Heading H2B. A stripping mechanism for a circuit-breaker includes an electromagnetic tripping device (Fig. 4) comprising an armature 68; a pivoted cam follower 74 limiting the de-energized position of the armature and a cam 81, rotatable to adjust the position of the follower 74 with respect to the armature and adjustable axially on its shaft 82. Each of three poles of a circuitbreaker comprises a movable contact 16 spring mounted 26 on a carrier 17, the carriers of all poles being rigidly linked by a bar 24. The centre carrier is operable through a toggle linkage 34, 36 and overcentre tension spring 41 by a handle 38. The toggle is supported by an arm 29 engaged by a latch 32 of the tripping mechanism which is assembled in a separate removable housing 20. Bimetal tripping elements 56 and electromagnetic tripping devices are associated with each pole of the breaker, each acting on a common trip bar 55 to release the latch 32 and open all the contacts. The action of the bimetal 56 is adjustable (Fig. 7 not shown) and is ambient temperature compensated by a second bimetal 60. In the electromagnetic tripping device the armature 68 is attached to a push rod 69 spring biased away from the core 66. The separation of the core and armature in the de-energized position and thus the current necessary to trip the breaker is adjustable through cam 81 by means of a knob 86. The maximum and minimum current values may be independently preset by adjusting a screw 78 and by moving the cam 81 along its shaft 82.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US100960A US3053954A (en) | 1961-04-05 | 1961-04-05 | Electric circuit breaker |
DEG34915A DE1173581B (en) | 1962-05-07 | 1962-05-07 | Tripping mechanism for overcurrent protection switch |
GB1945562A GB950814A (en) | 1962-05-21 | 1962-05-21 | Improvements in tripping mechanism for an electric circuit breaker |
FR919666A FR1343251A (en) | 1962-05-21 | 1962-12-26 | Electric circuit breaker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1945562A GB950814A (en) | 1962-05-21 | 1962-05-21 | Improvements in tripping mechanism for an electric circuit breaker |
Publications (1)
Publication Number | Publication Date |
---|---|
GB950814A true GB950814A (en) | 1964-02-26 |
Family
ID=10129653
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1945562A Expired GB950814A (en) | 1961-04-05 | 1962-05-21 | Improvements in tripping mechanism for an electric circuit breaker |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB950814A (en) |
-
1962
- 1962-05-21 GB GB1945562A patent/GB950814A/en not_active Expired
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