CA2521677C - Actuator for auxiliary switch and circuit breaker incorporating the same - Google Patents
Actuator for auxiliary switch and circuit breaker incorporating the same Download PDFInfo
- Publication number
- CA2521677C CA2521677C CA2521677A CA2521677A CA2521677C CA 2521677 C CA2521677 C CA 2521677C CA 2521677 A CA2521677 A CA 2521677A CA 2521677 A CA2521677 A CA 2521677A CA 2521677 C CA2521677 C CA 2521677C
- Authority
- CA
- Canada
- Prior art keywords
- accessory
- legs
- contact
- crossbar
- staple
- 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 - Fee Related
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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
- H01H71/46—Automatic release mechanisms with or without manual release having means for operating auxiliary contacts additional to the main contacts
- H01H71/465—Self-contained, easily replaceable microswitches
Landscapes
- Breakers (AREA)
- Keying Circuit Devices (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
A U-shaped accessory actuator clip that snaps onto the crossbar of a multipole circuit breaker is integrally molded of a compliant material with a flexible finger that actuates/deactuates an accessory, such as an auxiliary switch, as the contacts of the breaker close and open.
Description
ACTUATOR FOR AUXILIARY SWITCH AND
CIRCUIT BREAKER INCORPORATING THE SAME
CROSS REFERENCE TO RELATED APPLICATION
This application claims the benefit of U.S. Provisional Patent Application Serial No. 60/615,446, filed October 1, 2004.
BACKGROUND OF THE INVENTION
Field of the Invention This invention relates to circuit breakers with auxiliary switches that signal the state of the breaker contacts and, more particularly, to arrangements for actuating the auxiliary switch.
Background Information It is common for many circuit breakers to be provided with an auxiliary switch that signals the open or closed state of the circuit breaker contacts.
Often, the auxiliary switch is offered as an option. For instance, the auxiliary switch can be added, if requested, by insertion in a compartment in a primary cover of the circuit breaker that is enclosed by a secondary cover. The plunger of the auxiliary switch extends through an opening in the primary cover where it is actuated by a projection molded on the crossbar that ties the moving contact arms of the multipole circuit breaker together. The crossbar necessarily must be stiff to assure coordinated movement of the contact arms of all of the poles. Thus, the projection on the crossbar which is molded of the same material is stiff and non-compliant.
With this arrangement, there exists the potential for an accumulation of tolerance stack up within the circuit breaker operating mechanism to provide too much or too little travel. This travel may not be sufficient enough to actuate the auxiliary switch, or, excessive travel may damage the auxiliary switch. In previous instances, customizing/modifying plunger lengths was necessary to accommodate this tolerance stack up.
There is, therefore, room for improvement in arrangements for actuating the auxiliary switches in circuit breakers.
SUMMARY OF THE INVENTION
Aspects of the invention are directed to a multipole circuit breaker in which an accessory is actuated by an actuator secured to the crossbar and having a compliant finger that actuates and deactuates a plunger of the accessory while accommodating for variations in travel of the crossbar such as those resulting from tolerances and overtravel.
As one aspect of the invention, a circuit breaker comprises: a housing; a plurality of poles each comprising: separable contacts each comprising a fixed contact and a movable contact, and a contact arm assembly comprising a contact arm having the movable contact affixed to a distal end and a carrier pivotally mounting the contact arm for rotation between a closed position in which the movable contact engages the fixed contact and an open position in which the movable contact is separated from the fixed contact; a crossbar connecting the contact arm assemblies of the poles together as a moving assembly; an operating mechanism coupled to the moving assembly to simultaneously move the contact arms of the poles between the open and closed positions; an accessory having a plunger mounted in the housing adjacent to the crossbar; and an accessory actuator clip secured to and movable with the crossbar and having a forger that engages the plunger to actuate the accessory with the contact arms in one of the open and closed positions and that releases the plunger to deactuate the accessory in the other of the open and closed positions, the finger being complaint to accommodate for variations in travel of the crossbar.
The accessory actuator clip may be molded as a unitary piece from a compliant material.
The accessory actuator clip may comprise a plurality of hooks that secure the accessory actuator clip to the crossbar.
'The crossbar may be secured to the carrier of the contact arm assembly of one of the poles with a staple. The staple may include a pair of legs. The accessory actuator clip may be a molded clip that seats over the staple with a pair of hooks engaging the pair of legs of the staple.
The accessory actuator clip may include a pair of legs having distal ends.
The staple may include a pair of legs having distal ends. A pair of cleats may project inwardly from the distal ends of the legs of the accessory actuator clip. The legs of the accessory actuator clip may straddle the legs of the staple. The cleats may snap under the distal ends of the legs of the staple to secure the accessory actuator clip to the moving assembly.
CIRCUIT BREAKER INCORPORATING THE SAME
CROSS REFERENCE TO RELATED APPLICATION
This application claims the benefit of U.S. Provisional Patent Application Serial No. 60/615,446, filed October 1, 2004.
BACKGROUND OF THE INVENTION
Field of the Invention This invention relates to circuit breakers with auxiliary switches that signal the state of the breaker contacts and, more particularly, to arrangements for actuating the auxiliary switch.
Background Information It is common for many circuit breakers to be provided with an auxiliary switch that signals the open or closed state of the circuit breaker contacts.
Often, the auxiliary switch is offered as an option. For instance, the auxiliary switch can be added, if requested, by insertion in a compartment in a primary cover of the circuit breaker that is enclosed by a secondary cover. The plunger of the auxiliary switch extends through an opening in the primary cover where it is actuated by a projection molded on the crossbar that ties the moving contact arms of the multipole circuit breaker together. The crossbar necessarily must be stiff to assure coordinated movement of the contact arms of all of the poles. Thus, the projection on the crossbar which is molded of the same material is stiff and non-compliant.
With this arrangement, there exists the potential for an accumulation of tolerance stack up within the circuit breaker operating mechanism to provide too much or too little travel. This travel may not be sufficient enough to actuate the auxiliary switch, or, excessive travel may damage the auxiliary switch. In previous instances, customizing/modifying plunger lengths was necessary to accommodate this tolerance stack up.
There is, therefore, room for improvement in arrangements for actuating the auxiliary switches in circuit breakers.
SUMMARY OF THE INVENTION
Aspects of the invention are directed to a multipole circuit breaker in which an accessory is actuated by an actuator secured to the crossbar and having a compliant finger that actuates and deactuates a plunger of the accessory while accommodating for variations in travel of the crossbar such as those resulting from tolerances and overtravel.
As one aspect of the invention, a circuit breaker comprises: a housing; a plurality of poles each comprising: separable contacts each comprising a fixed contact and a movable contact, and a contact arm assembly comprising a contact arm having the movable contact affixed to a distal end and a carrier pivotally mounting the contact arm for rotation between a closed position in which the movable contact engages the fixed contact and an open position in which the movable contact is separated from the fixed contact; a crossbar connecting the contact arm assemblies of the poles together as a moving assembly; an operating mechanism coupled to the moving assembly to simultaneously move the contact arms of the poles between the open and closed positions; an accessory having a plunger mounted in the housing adjacent to the crossbar; and an accessory actuator clip secured to and movable with the crossbar and having a forger that engages the plunger to actuate the accessory with the contact arms in one of the open and closed positions and that releases the plunger to deactuate the accessory in the other of the open and closed positions, the finger being complaint to accommodate for variations in travel of the crossbar.
The accessory actuator clip may be molded as a unitary piece from a compliant material.
The accessory actuator clip may comprise a plurality of hooks that secure the accessory actuator clip to the crossbar.
'The crossbar may be secured to the carrier of the contact arm assembly of one of the poles with a staple. The staple may include a pair of legs. The accessory actuator clip may be a molded clip that seats over the staple with a pair of hooks engaging the pair of legs of the staple.
The accessory actuator clip may include a pair of legs having distal ends.
The staple may include a pair of legs having distal ends. A pair of cleats may project inwardly from the distal ends of the legs of the accessory actuator clip. The legs of the accessory actuator clip may straddle the legs of the staple. The cleats may snap under the distal ends of the legs of the staple to secure the accessory actuator clip to the moving assembly.
The accessory actuator clip may include a U-shape having a base and a pair of parallel legs. The finger may extend at an angle from the outer surface of one of the legs.
As another aspect of the invention, an accessory actuator clip is for a circuit breaker including a housing, a plurality of poles each comprising:
separable contacts each comprising a fixed contact and a movable contact, and a contact arm assembly comprising a contact arm having a movable contact affixed to a distal end and a carrier pivotally mounting the contact arm for rotation between a closed position in which the movable contact engages the fixed contact and an open position in which the movable contact is separated from the fixed contact, a crossbar connecting the contact arm assemblies of the poles together as a moving assembly, an operating mechanism coupled to the moving assembly to simultaneously move the contact arms of the poles between the open and closed positions, and an accessory having a plunger mounted in the housing adjacent to the crossbar. The accessory actuator clip comprises: a base; a pair of legs; and a finger extending at an angle from the outer surface of one of the legs, wherein the accessory actuator clip is structured to secure to and be movable with the crossbar, wherein the finger is structured to engage the plunger to actuate the accessory with the contact arms in one of the open and closed positions and to release the plunger to deactuate the accessory in the other of the open and closed positions, and wherein the finger is complaint to accommodate for variations in travel of the crossbar.
BRIEF DESCRIPTION OF THE DRAWINGS
A full understanding of the invention can be gained from the following description of the preferred embodiments when read in conjunction with the accompanying drawings in which:
Figure 1 is an isometric view of a circuit breaker incorporating aspects of the invention.
Figure 2 is a longitudinal sectional view through the circuit breaker of Figure 1 showing pertinent parts.
Figure 3 is an isometric sectional view showing pertinent parts of the circuit breaker of Figure I .
Figure 4 is an isometric view of an accessory actuator clip in accordance with aspects of the invention.
As another aspect of the invention, an accessory actuator clip is for a circuit breaker including a housing, a plurality of poles each comprising:
separable contacts each comprising a fixed contact and a movable contact, and a contact arm assembly comprising a contact arm having a movable contact affixed to a distal end and a carrier pivotally mounting the contact arm for rotation between a closed position in which the movable contact engages the fixed contact and an open position in which the movable contact is separated from the fixed contact, a crossbar connecting the contact arm assemblies of the poles together as a moving assembly, an operating mechanism coupled to the moving assembly to simultaneously move the contact arms of the poles between the open and closed positions, and an accessory having a plunger mounted in the housing adjacent to the crossbar. The accessory actuator clip comprises: a base; a pair of legs; and a finger extending at an angle from the outer surface of one of the legs, wherein the accessory actuator clip is structured to secure to and be movable with the crossbar, wherein the finger is structured to engage the plunger to actuate the accessory with the contact arms in one of the open and closed positions and to release the plunger to deactuate the accessory in the other of the open and closed positions, and wherein the finger is complaint to accommodate for variations in travel of the crossbar.
BRIEF DESCRIPTION OF THE DRAWINGS
A full understanding of the invention can be gained from the following description of the preferred embodiments when read in conjunction with the accompanying drawings in which:
Figure 1 is an isometric view of a circuit breaker incorporating aspects of the invention.
Figure 2 is a longitudinal sectional view through the circuit breaker of Figure 1 showing pertinent parts.
Figure 3 is an isometric sectional view showing pertinent parts of the circuit breaker of Figure I .
Figure 4 is an isometric view of an accessory actuator clip in accordance with aspects of the invention.
Figure 5 is an isometric view illustrating the relationship of the accessory actuator clip of Figure 4 to an auxiliary switch and to its support.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Figure 1 illustrates a circuit breaker 1 incorporating aspects of the invention. The circuit breaker 1 has a housing 3 formed by a base 5, a primary cover 7 that mates with the base 5, and a secondary cover 9 seated on the primary cover.
The example circuit breaker 1 has three poles 11A, 11B and 11C, although the invention is applicable to circuit breakers having two or more poles. The load conductors 13A, 13B and 13C for these poles are visible in Figure 1. A handle 15 is used to manually turn the circuit breaker 1 off and on.
Figures 2 and 3 illustrate only pertinent internal parts of the circuit breaker 1. Each of the poles of the circuit breaker 1, such as the pole 11A, has separable contacts 17 in the form of a fixed contact 19 and a movable contact 21. The fixed contact 19 is mounted on a Line conductor 23, while the movable contact 21 is affixed to the distal end 25 of a contact arm 27. The contact arm 27 is supported for pivotal movement at about an axis 29 by a carrier 31 to form a contact arm assembly 33. As illustrated by the arrows 35, the contact arm assembly 33 is rotatable between a closed position, as shown in Figure 2, in which the movable contact 21 engages the fixed contact 19 and an open position (not shown) in which the separable contacts 17 are separated.
The contact arm assemblies 33 of the three poles 11A-11C are joined together to form a moving contact assembly 37 by a crossbar 39. As is well known, an operating mechanism 41, typically coupled to the center pole 11B, operates the moving assembly 37 to simultaneously open and close the separable contacts 17 of each of the poles 11A-11C. The operating mechanism 41 can be actuated manually by the handle 15 or automatically in response to specified current/time characteristics of load current by a trip mechanism 43, again as is well known.
The crossbar 39 is tied to the carrier 31 of each pole 11 by a staple 45.
As shown in Figure 5, the staple 45 has a pair of legs 47 each of which terminates in a pair of stakes 49 that extend through holes in the carrier 31 as can be seen in Figure 3.
The ends of the stakes 49 are spun to secure the staple 45, and therefore, the crossbar 39 to the contact arm assembly 33.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Figure 1 illustrates a circuit breaker 1 incorporating aspects of the invention. The circuit breaker 1 has a housing 3 formed by a base 5, a primary cover 7 that mates with the base 5, and a secondary cover 9 seated on the primary cover.
The example circuit breaker 1 has three poles 11A, 11B and 11C, although the invention is applicable to circuit breakers having two or more poles. The load conductors 13A, 13B and 13C for these poles are visible in Figure 1. A handle 15 is used to manually turn the circuit breaker 1 off and on.
Figures 2 and 3 illustrate only pertinent internal parts of the circuit breaker 1. Each of the poles of the circuit breaker 1, such as the pole 11A, has separable contacts 17 in the form of a fixed contact 19 and a movable contact 21. The fixed contact 19 is mounted on a Line conductor 23, while the movable contact 21 is affixed to the distal end 25 of a contact arm 27. The contact arm 27 is supported for pivotal movement at about an axis 29 by a carrier 31 to form a contact arm assembly 33. As illustrated by the arrows 35, the contact arm assembly 33 is rotatable between a closed position, as shown in Figure 2, in which the movable contact 21 engages the fixed contact 19 and an open position (not shown) in which the separable contacts 17 are separated.
The contact arm assemblies 33 of the three poles 11A-11C are joined together to form a moving contact assembly 37 by a crossbar 39. As is well known, an operating mechanism 41, typically coupled to the center pole 11B, operates the moving assembly 37 to simultaneously open and close the separable contacts 17 of each of the poles 11A-11C. The operating mechanism 41 can be actuated manually by the handle 15 or automatically in response to specified current/time characteristics of load current by a trip mechanism 43, again as is well known.
The crossbar 39 is tied to the carrier 31 of each pole 11 by a staple 45.
As shown in Figure 5, the staple 45 has a pair of legs 47 each of which terminates in a pair of stakes 49 that extend through holes in the carrier 31 as can be seen in Figure 3.
The ends of the stakes 49 are spun to secure the staple 45, and therefore, the crossbar 39 to the contact arm assembly 33.
As shown in Figure 2, the primary cover 7 of the circuit breaker I has a compartment 53 in which is received an accessory such as the auxiliary switch 55.
The auxiliary switch 55 is secured in the compartment 55 by the secondary cover 9 (Figure 1). The auxiliary switch 55 has a plunger 57 that extends downward into the cavity 59 where is it actuated by an accessory actuator clip 61 (Figure 3). As best seen in Figure 4, the accessory actuator clip 61 is U-shaped having a base part 63 and a pair of legs 65 and 67 extending in generally parallel planes from the ends of the base part 63. An actuating finger 69 extends at an angle from the outer surface of the leg 65. A pair of hooks, such as cleats 71, chamfered at the lateral edges 73 project inwardly from the distal ends of the legs 65 and 67.
The accessory actuator clip 61 is preferably molded as an integral piece from a compliant material such as, for example, a polyester resin. It is secured on the crossbar 39 by spreading the legs 65 and 67 to straddle the legs 47 of the staple 45 (Figure 5). When fully seated on the staple 45, the cleats 71 snap under the distal ends of the legs 47 of the staple 45 between the stakes 49 to firmly secure the accessory actuator clip 61 to the moving assembly 37 (Figure 3). As can be seen from Figures 2, 3 and 5, when the contact arm assembly 33 of the pole 11A is in the closed position, the actuating finger 69 of the actuator accessory clip 61 (Figure 4) engages and actuates the plunger 57 of the auxiliary switch 55. The actuating finger 69 is stiff enough that it overcomes the spring bias on the plunger 57 to actuate the plunger, yet is flexible enough that when the plunger seats, the actuating finger 69 can flex to accommodate for overtravel. This overtravel can result from a stackup of tolerances in the moving assembly 37 which can result in different angular positions of the crossbar 39 when the separable contacts 17 are closed. Additional variations in the final position of the crossbar 39 with the separable contacts 17 closed can be attributed to wear of the fixed and movable contacts 19 and 21. The flexing of the actuating finger 69 due to the compliant material from which it is made easily accommodates for these variations without generating undue stresses.
As mentioned, the accessory in the exemplary embodiment of the invention is the auxiliary switch 55. Such auxiliary switches are commonly used to signal the open/closed state of the separable contacts 17, such as for remote monitoring or operation.
The auxiliary switch 55 is secured in the compartment 55 by the secondary cover 9 (Figure 1). The auxiliary switch 55 has a plunger 57 that extends downward into the cavity 59 where is it actuated by an accessory actuator clip 61 (Figure 3). As best seen in Figure 4, the accessory actuator clip 61 is U-shaped having a base part 63 and a pair of legs 65 and 67 extending in generally parallel planes from the ends of the base part 63. An actuating finger 69 extends at an angle from the outer surface of the leg 65. A pair of hooks, such as cleats 71, chamfered at the lateral edges 73 project inwardly from the distal ends of the legs 65 and 67.
The accessory actuator clip 61 is preferably molded as an integral piece from a compliant material such as, for example, a polyester resin. It is secured on the crossbar 39 by spreading the legs 65 and 67 to straddle the legs 47 of the staple 45 (Figure 5). When fully seated on the staple 45, the cleats 71 snap under the distal ends of the legs 47 of the staple 45 between the stakes 49 to firmly secure the accessory actuator clip 61 to the moving assembly 37 (Figure 3). As can be seen from Figures 2, 3 and 5, when the contact arm assembly 33 of the pole 11A is in the closed position, the actuating finger 69 of the actuator accessory clip 61 (Figure 4) engages and actuates the plunger 57 of the auxiliary switch 55. The actuating finger 69 is stiff enough that it overcomes the spring bias on the plunger 57 to actuate the plunger, yet is flexible enough that when the plunger seats, the actuating finger 69 can flex to accommodate for overtravel. This overtravel can result from a stackup of tolerances in the moving assembly 37 which can result in different angular positions of the crossbar 39 when the separable contacts 17 are closed. Additional variations in the final position of the crossbar 39 with the separable contacts 17 closed can be attributed to wear of the fixed and movable contacts 19 and 21. The flexing of the actuating finger 69 due to the compliant material from which it is made easily accommodates for these variations without generating undue stresses.
As mentioned, the accessory in the exemplary embodiment of the invention is the auxiliary switch 55. Such auxiliary switches are commonly used to signal the open/closed state of the separable contacts 17, such as for remote monitoring or operation.
As another example of an accessory, a similar microswitch is typically incorporated into a shunt trip mechanism (not shown), which allows the coil of the shunt trip mechanism to be energized only when the separable contacts 17 are closed.
Such a shunt trip mechanism is variously used for remote tripping of the breaker and for electronic tripping, which can include tripping for ground faults and/or arc faults.
Although example accessories are disclosed, a wide range of circuit breaker accessories may be employed with the example accessory actuator clip 61.
While specific embodiments of the invention have been described in detail, it will be appreciated by those skilled in the art that various modifications and alternatives to those details could be developed in light of the overall teachings of the disclosure. Accordingly, the particular arrangements disclosed are meant to be illustrative only and not limiting as to the scope of the invention which is to be given the full breadth of the claims appended and any and all equivalents thereof.
REFERENCE NUMERICAL LIST
1 circuit breaker 3 housing 5 base 7 primary cover 9 secondary cover 11 poles A,B,C
13 load conductors 15 handle 17 separable contacts 19 fixed contact 21 movable contact 23 line conductor 25 distal end of contact arm 27 contact arm 29 pivot axis 31 carrier 33 contact arm assembly 35 arrows 37 moving assembly 39 crossbar 41 operating mechanism 43 trip mechanism 45 staple 47 legs of staple 49 stakes 53 compartment 55 accessory auxiliary switch 57 plunger on accessory auxiliary switch 59 cavity in housing 61 accessory actuator clip 63 base of accessory actuator clip 65 leg of accessory actuator clip 67 leg of accessory actuator clip 69 actuating finger 71 cleats 73 chamfers
Such a shunt trip mechanism is variously used for remote tripping of the breaker and for electronic tripping, which can include tripping for ground faults and/or arc faults.
Although example accessories are disclosed, a wide range of circuit breaker accessories may be employed with the example accessory actuator clip 61.
While specific embodiments of the invention have been described in detail, it will be appreciated by those skilled in the art that various modifications and alternatives to those details could be developed in light of the overall teachings of the disclosure. Accordingly, the particular arrangements disclosed are meant to be illustrative only and not limiting as to the scope of the invention which is to be given the full breadth of the claims appended and any and all equivalents thereof.
REFERENCE NUMERICAL LIST
1 circuit breaker 3 housing 5 base 7 primary cover 9 secondary cover 11 poles A,B,C
13 load conductors 15 handle 17 separable contacts 19 fixed contact 21 movable contact 23 line conductor 25 distal end of contact arm 27 contact arm 29 pivot axis 31 carrier 33 contact arm assembly 35 arrows 37 moving assembly 39 crossbar 41 operating mechanism 43 trip mechanism 45 staple 47 legs of staple 49 stakes 53 compartment 55 accessory auxiliary switch 57 plunger on accessory auxiliary switch 59 cavity in housing 61 accessory actuator clip 63 base of accessory actuator clip 65 leg of accessory actuator clip 67 leg of accessory actuator clip 69 actuating finger 71 cleats 73 chamfers
Claims (5)
1. A circuit breaker which comprises:
a housing, a plurality of poles each comprising separable contacts each of which comprises a fixed contact and a movable contact, and a contact arm assembly comprising a contact arm having said movable contact affixed to a distal end and a carrier pivotally mounting said contact arm for rotation between a closed position in which said movable contact engages said fixed contact and an open position in which said movable contact is separated from said fixed contact; a crossbar connecting said contact arm assemblies of said poles together as a moving assembly;
an operating mechanism coupled to said moving assembly to move simultaneously said contact arms of said poles between said open and closed positions; an accessory having a plunger mounted in said housing adjacent to said crossbar; and an accessory actuator clip secured to and movable with said crossbar and having a finger that engages the plunger to actuate said accessory with said contact arms in one of said open and closed positions and that releases said plunger to deactuate said accessory in the other of said open and closed positions, said finger being compliant to accommodate for variations in travel of said crossbar, characterized in that said accessory actuator clip comprises a plurality of hooks that secure said clip to said crossbar.
a housing, a plurality of poles each comprising separable contacts each of which comprises a fixed contact and a movable contact, and a contact arm assembly comprising a contact arm having said movable contact affixed to a distal end and a carrier pivotally mounting said contact arm for rotation between a closed position in which said movable contact engages said fixed contact and an open position in which said movable contact is separated from said fixed contact; a crossbar connecting said contact arm assemblies of said poles together as a moving assembly;
an operating mechanism coupled to said moving assembly to move simultaneously said contact arms of said poles between said open and closed positions; an accessory having a plunger mounted in said housing adjacent to said crossbar; and an accessory actuator clip secured to and movable with said crossbar and having a finger that engages the plunger to actuate said accessory with said contact arms in one of said open and closed positions and that releases said plunger to deactuate said accessory in the other of said open and closed positions, said finger being compliant to accommodate for variations in travel of said crossbar, characterized in that said accessory actuator clip comprises a plurality of hooks that secure said clip to said crossbar.
2. The circuit breaker of claim 1, wherein the crossbar is secured to the carrier of the contact arm assembly of one of the poles with a staple.
3. The circuit breaker of claim 2, wherein the staple includes a pair of legs and the accessory actuator clip is a molded clip that seats over the staple with a pair of hooks engaging said pair of legs of said staple.
4. The circuit breaker of claim 2, wherein the accessory actuator clip and the staple both include a pair of legs having distal ends, and a pair of cleats projects inwardly from said distal ends of said legs of said accessory actuator clip, the legs of said accessory actuator clip straddling said legs of said staple and said cleats snapping under said distal ends of said legs of said staple to secure said accessory actuator clip to the moving assembly.
5. The circuit breaker of claim 1, 2, 3 or 4, wherein the accessory actuator clip includes a U-shape having a base and a pair of parallel legs and the finger extends at an angle from the outer surface of one of said legs.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US61544604P | 2004-10-01 | 2004-10-01 | |
| US60/615,446 | 2004-10-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2521677A1 CA2521677A1 (en) | 2006-04-01 |
| CA2521677C true CA2521677C (en) | 2013-01-22 |
Family
ID=35517204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2521677A Expired - Fee Related CA2521677C (en) | 2004-10-01 | 2005-09-29 | Actuator for auxiliary switch and circuit breaker incorporating the same |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1643527B1 (en) |
| CN (1) | CN100585768C (en) |
| AT (1) | ATE429026T1 (en) |
| CA (1) | CA2521677C (en) |
| DE (1) | DE602005013874D1 (en) |
| ZA (1) | ZA200507950B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9384910B1 (en) * | 2015-05-07 | 2016-07-05 | Eaton Corporation | Electrical switching apparatus and trip assembly therefor |
| US11195682B2 (en) | 2017-09-25 | 2021-12-07 | Eaton Intelligent Power Limited | Circuit interrupter, trip deck assembly, and support for switch therefor |
| KR102159960B1 (en) * | 2019-02-22 | 2020-09-25 | 엘에스일렉트릭(주) | Pole part and circuit breaker having the same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5113043A (en) * | 1991-02-25 | 1992-05-12 | General Electric Company | Circuit breaker safety interlock unit |
-
2005
- 2005-09-29 CA CA2521677A patent/CA2521677C/en not_active Expired - Fee Related
- 2005-09-30 AT AT05021450T patent/ATE429026T1/en not_active IP Right Cessation
- 2005-09-30 EP EP05021450A patent/EP1643527B1/en not_active Not-in-force
- 2005-09-30 ZA ZA200507950A patent/ZA200507950B/en unknown
- 2005-09-30 DE DE602005013874T patent/DE602005013874D1/en active Active
- 2005-09-30 CN CN200510124926A patent/CN100585768C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP1643527A2 (en) | 2006-04-05 |
| CA2521677A1 (en) | 2006-04-01 |
| EP1643527A3 (en) | 2007-07-25 |
| EP1643527B1 (en) | 2009-04-15 |
| ATE429026T1 (en) | 2009-05-15 |
| CN100585768C (en) | 2010-01-27 |
| DE602005013874D1 (en) | 2009-05-28 |
| CN1761012A (en) | 2006-04-19 |
| ZA200507950B (en) | 2006-06-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20150929 |