GB470047A - Improvements in or relating to multipole automatic electric circuit breakers - Google Patents
Improvements in or relating to multipole automatic electric circuit breakersInfo
- Publication number
- GB470047A GB470047A GB23332/36A GB2333236A GB470047A GB 470047 A GB470047 A GB 470047A GB 23332/36 A GB23332/36 A GB 23332/36A GB 2333236 A GB2333236 A GB 2333236A GB 470047 A GB470047 A GB 470047A
- Authority
- GB
- United Kingdom
- Prior art keywords
- handle
- bar
- members
- spring
- parts
- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/58—Electric connections to or between contacts; Terminals
-
- 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
- H01H71/02—Housings; Casings; Bases; Mountings
-
- 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
- H01H71/08—Terminals; Connections
-
- 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
- H01H71/1009—Interconnected mechanisms
- H01H71/1027—Interconnected mechanisms comprising a bidirectional connecting member actuated by the opening movement of one pole to trip a neighbour pole
-
- 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
- H01H71/1045—Multiple circuits-breaker, e.g. for the purpose of dividing current or potential drop
-
- 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
-
- 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
- H01H71/405—Combined electrothermal and electromagnetic mechanisms in which a bimetal forms the inductor for the electromagnetic mechanism
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H2011/0075—Apparatus or processes specially adapted for the manufacture of electric switches calibrating mechanical switching properties, e.g. "snap or switch moment", by mechanically deforming a part of the switch, e.g. elongating a blade spring by puncturing it with a laser
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- 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
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Breakers (AREA)
Abstract
470,047. Electrically-released switches. SQUARE D. CO. Aug. 25, 1936, No. 23332. Convention date, Feb. 18. [Class 38 (v)] Springs, arrangement of; bases and cases; handles; indicators.-A multipole circuitbreaker comprises a plurality of floating members carrying contact surfaces adjacent to one end adapted to co-operate with fixed contacts, and current-responsive latching means for the opposite ends of said members, said latching means releasing all the floating members upon occurrence of an overload through any pole of the breaker to separate all said contact surfaces from the fixed contacts. The base 1 is provided with partitions 5 separating the poles, which partitions are cutaway adjacent the handle 36 and arranged in line with the terminal-separating flanges 4. The parts 4, 5 are slotted at 76 to cooperate with slotted fibre end-closures 73, 74 arranged under the metal cover 75. The movable contact 24 of each pole co-operates with a fixed contact 16 on a connector 14, and is itself carried at one end of a bar 21, the opposite end of which carries a latch surface 27 co-operating with a latch surface 28 pressed out of a latch-member 47. The members 47 are all carried from a shaft 45 rotatable in the side walls of the base 1, and each has a turned-up end 48 maintained by a spring 52 against a bimetal strip 49, which is connected at 51 to'the appropriate bar 21. Each bar 21 is notched at 22 and passes through slots 18, 19 in the unequal depending legs of a member 17, which is guided for rectilinear movement in the base and maintained by a spring 23 against the bar 21. The handle 36 is fast on a shaft 34 and provided with an operating cam-surface for each pole, the individual surfaces being separated by cutaway parts 40 which enable the parts to clear the partition 5. A spring 43 maintains the handle in proper relation to the members 17 in the on position. To effect manual opening from the Fig. 2 position, 36 is rotated clockwise to depress 17 and rotate 21 about the latch surfaces 27, 28 as pivot. In the open position the flat surface 41 of the handle engages the member 17 and holds it against the action of the closing spring 29, which, when the handle is restored to the Fig. 2 position, recloses the switch. On overload in one pole, the strip 49 in that pole rotates member 47 clockwise to disengage 28 from 27, and due to the surface 71 on the bar 21, ensures the movement of the other bars 21 to the released position under the action of the springs 29, Fig. 4. In this position the handle is rotated beyond the normal " on " position and so gives an indication that the switch has been tripped. To reclose, the handle is rotated clockwise right over beyond the off position to cause the surface 42 to depress the bar 21 so far as to relatch it, in which action the bar pivots about notch 22 and, at the contact end, about the base. Release of the handle allows spring 29 to restore the parts to the normal off position, from which reclosure is effected by the handle as already described. Separation of the contacts takes place in an arc chamber having a fibre liner 25. Connectors 14 have depressions 13 over which the tops of metal sleeves 12 are spun, and terminal studs 15 are threaded into the sleeves 12. Connectors 54 are similarly attached to metal inserts 56 having studs 57 extending therethrough, on to which are threaded nuts 59 with intervening cup-shaped members 58. Inside the case the connectors are bent up and the centre parts pressed out at 65, to which parts the strips 49 are secured. The outer limbs of each connector are bent over at 68 and between the limbs a block 66 with adjusting screw 67 is arranged. The connector is applied to the base by slipping it from above into vertical notches 64 in the sides and partitions 5. Fig. 7 shows a modified arrangement of the latch members 47 and shaft 45, whereby all strain is removed from the bimetal strips once release has occurred. The arms 87 are rigidly attached to shaft 85 and biassed by spring 89 in a counterclockwise or latching direction. The latching surfaces 91 are continued into a projecting surface 92, which is engaged by the bar 21 in the tripped position to produce a further movement of the latching member, the latter being also held clear of the strips 49.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US64575A US2096544A (en) | 1936-02-18 | 1936-02-18 | Circuit breaker |
Publications (1)
Publication Number | Publication Date |
---|---|
GB470047A true GB470047A (en) | 1937-08-09 |
Family
ID=22056894
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB23332/36A Expired GB470047A (en) | 1936-02-18 | 1936-08-25 | Improvements in or relating to multipole automatic electric circuit breakers |
Country Status (3)
Country | Link |
---|---|
US (1) | US2096544A (en) |
FR (1) | FR813734A (en) |
GB (1) | GB470047A (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2416407A (en) * | 1943-03-15 | 1947-02-25 | Line Material Co | Switch construction |
US2439511A (en) * | 1944-04-10 | 1948-04-13 | Frank Adam Electric Co | Latching or tripping mechanism of circuit breakers |
US2476076A (en) * | 1944-04-17 | 1949-07-12 | Gen Electric | Automatic polyphase reclosing circuit breaker |
US2567411A (en) * | 1946-01-05 | 1951-09-11 | Mcgraw Electric Co | Polyphase circuit interrupter |
US2662948A (en) * | 1950-08-24 | 1953-12-15 | Fed Electric Prod Co | Multipole circuit breaker |
US2843702A (en) * | 1952-10-22 | 1958-07-15 | Ite Circuit Breaker Ltd | Protective device with current limiting means |
US2824191A (en) * | 1953-02-05 | 1958-02-18 | Fed Electric Prod Co | Circuit breakers |
US2802922A (en) * | 1954-09-13 | 1957-08-13 | Gen Electric | Contact arm assembly for circuit interrupter |
US2854555A (en) * | 1954-11-09 | 1958-09-30 | Ite Circuit Breaker Ltd | Indicating means for multi-pole circuit breakers |
US3125653A (en) * | 1959-03-20 | 1964-03-17 | Multiple automatic circuit breaker | |
US3137776A (en) * | 1960-03-30 | 1964-06-16 | Saimi Denki Kogyo Co Ltd | Manual electric switch having automatic overload release means |
DE1194960B (en) * | 1963-07-11 | 1965-06-16 | Continental Elektro Ind Ag | Circuit breaker |
US4179675A (en) * | 1978-04-03 | 1979-12-18 | Gould Inc. | Trip bar means subassembly |
JP3900730B2 (en) * | 1999-02-15 | 2007-04-04 | 富士電機機器制御株式会社 | Switch terminal structure |
EP2608233A1 (en) * | 2011-12-23 | 2013-06-26 | Abb Ag | Electrical load interrupter for low voltage |
-
1936
- 1936-02-18 US US64575A patent/US2096544A/en not_active Expired - Lifetime
- 1936-08-25 GB GB23332/36A patent/GB470047A/en not_active Expired
- 1936-11-18 FR FR813734D patent/FR813734A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2096544A (en) | 1937-10-19 |
FR813734A (en) | 1937-06-08 |
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