GB805447A - Improvements in and relating to electric circuit breakers - Google Patents
Improvements in and relating to electric circuit breakersInfo
- Publication number
- GB805447A GB805447A GB2943/56A GB294356A GB805447A GB 805447 A GB805447 A GB 805447A GB 2943/56 A GB2943/56 A GB 2943/56A GB 294356 A GB294356 A GB 294356A GB 805447 A GB805447 A GB 805447A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strip
- contacts
- latch
- strips
- screw
- 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
- H01H71/7427—Adjusting only the electrothermal mechanism
- H01H71/7436—Adjusting the position (or prestrain) of the bimetal
-
- 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
Landscapes
- Breakers (AREA)
- Thermally Actuated Switches (AREA)
Abstract
805,447. Protective cut-out arrangements. MECHANICAL PRODUCTS Inc. Jan. 30, 1956 [IFeb. 7, 1955], No. 2943/56. Class 38 (5) An overload circuit-breaker arrangement comprises moving contacts 44, 44<SP>1</SP> interconnected by a " thermostat metal " latch 40 which normally abuts a relatively fixed abutment 42 and is normally shunted by a switch having contacts 58, 58<SP>1</SP> carried by thermostat metal strips 54, 54<SP>1</SP>, the strip 54 being in the shunt circuit and the strip 54<SP>1</SP> providing ambient temperature compensation. The latch and the strips may be of bimetal or trimetal and the strips have their high expansion side facing adjusting screw 60. Under overload conditions, the strip 54 deflects to open the contacts 58, 58<SP>1</SP> so that the full current is caused to flow through the latch 40 which quickly separates from the abutment 42 and allows the springs 48 to open the contacts 44, 46 and 44<SP>1</SP> 46<SP>1</SP>. With the screw 60 in the full line position it restrains the outward movement of the strip 54<SP>1</SP> so that ambient temperature compensation is provided above a normal temperature and release is delayed for temperatures below normal, but with the screw in the dotted position it merely functions to maintain the desired contact pressure.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US486378A US2798919A (en) | 1955-02-07 | 1955-02-07 | Electric circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB805447A true GB805447A (en) | 1958-12-03 |
Family
ID=23931652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2943/56A Expired GB805447A (en) | 1955-02-07 | 1956-01-30 | Improvements in and relating to electric circuit breakers |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2798919A (en) |
| CH (1) | CH350355A (en) |
| DE (1) | DE1048991B (en) |
| FR (1) | FR1141168A (en) |
| GB (1) | GB805447A (en) |
| NL (1) | NL204311A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2930937A (en) * | 1958-01-16 | 1960-03-29 | Rowan Controller Company | Circuit protector |
| US3158715A (en) * | 1961-01-18 | 1964-11-24 | Mechanical Products Inc | Electric switch incorporating an automatic circuit breaker |
| US3683140A (en) * | 1971-05-21 | 1972-08-08 | Square D Co Canada Ltd | Electric circuit breaker with arc current shunting blade stacked on contact blade |
| DE102007005135A1 (en) * | 2007-02-01 | 2008-08-07 | Siemens Ag | Electromechanical switching device for protecting electrical lines or consumers and using a thermal coupling in an electromechanical switching device |
| CN106356262B (en) * | 2016-11-24 | 2018-04-10 | 天津航空机电有限公司 | A kind of drive link of breaker for Multiphase Parallel control |
| CN106356258B (en) * | 2016-11-24 | 2018-06-15 | 天津航空机电有限公司 | A kind of conductive structure of Parallel Control breaker |
| CN106531571B (en) * | 2016-11-24 | 2018-06-15 | 天津航空机电有限公司 | A kind of auxiliary contact breaker with self-cleaning function |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB669656A (en) * | 1949-12-22 | 1952-04-09 | Mechanical Products Inc | Electric overload-protection switch |
| US2629034A (en) * | 1951-06-02 | 1953-02-17 | Gen Motors Corp | Electrical apparatus |
| US2679565A (en) * | 1953-02-02 | 1954-05-25 | Gen Electric | Self-protecting bimetal member |
-
0
- NL NL204311D patent/NL204311A/xx unknown
-
1955
- 1955-02-07 US US486378A patent/US2798919A/en not_active Expired - Lifetime
-
1956
- 1956-01-30 GB GB2943/56A patent/GB805447A/en not_active Expired
- 1956-01-31 FR FR1141168D patent/FR1141168A/en not_active Expired
- 1956-02-04 DE DEM29554A patent/DE1048991B/en active Pending
- 1956-02-07 CH CH350355D patent/CH350355A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR1141168A (en) | 1957-08-27 |
| NL204311A (en) | |
| US2798919A (en) | 1957-07-09 |
| CH350355A (en) | 1960-11-30 |
| DE1048991B (en) | 1959-01-22 |
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