US20010050539A1 - Motor operator for a circuit breaker - Google Patents
Motor operator for a circuit breaker Download PDFInfo
- Publication number
- US20010050539A1 US20010050539A1 US09/731,380 US73138000A US2001050539A1 US 20010050539 A1 US20010050539 A1 US 20010050539A1 US 73138000 A US73138000 A US 73138000A US 2001050539 A1 US2001050539 A1 US 2001050539A1
- Authority
- US
- United States
- Prior art keywords
- motor
- external terminal
- coupled
- circuit breaker
- rotor
- 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.)
- Granted
Links
Images
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
- H01H71/66—Power reset mechanisms
- H01H71/70—Power reset mechanisms actuated by electric motor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/26—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
- H01H2003/266—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor having control circuits for motor operating switches, e.g. controlling the opening or closing speed of the contacts
Definitions
- This invention relates to a motor operator, and, more particularly, to a motor operator for circuit breakers.
- a motor operator is typically secured to the top of a circuit breaker housing.
- a lever within the motor operator mechanically interacts with a circuit breaker operating handle, which extends from the circuit breaker housing.
- the lever is operatively connected to a motor within the motor operator.
- the motor drives the lever, which, in turn, moves the operating handle to operate the circuit breaker.
- the operating handle is moved between “on”, “off”, and “reset” positions, depending on the rotational direction of the motor.
- buttons external to the motor operator controls electrical current to the motor.
- the rotational direction of the motor is changed depending on which of these buttons is selected by operating personnel.
- the operating personnel can select one button to place the operating handle in the “on” position, and another button to place the operating handle in the “off” or “reset” positions.
- FIG. 1 is a diagram of the stator of a series motor.
- the field coils are wound around magnetic pole pieces, called shoes.
- the field coils and shoes produce the main magnetic field. When current passes through the field coils, one shoe becomes a north pole while the other becomes a south pole.
- Electrical connection between the field windings and the rotor windings (not shown) is made by brushes (not shown) in contact with a commutator (not shown) of the rotor, as is known in the art.
- a motor operator for a circuit breaker has a series motor, which includes a first external terminal coupled to a first half inductor and a second external terminal coupled to a second half inductor.
- a third external terminal is coupled to a rotor. The first external terminal and the third external terminal form a first electric path, and the second external terminal and the third external terminal form a second electric path.
- FIG. 1 is a prior art series motor
- FIG. 2 is a stator in the prior art series motor of FIG. 1;
- FIG. 3 is a circuit diagram of a prior art motor operator having five connection terminals
- FIG. 4 is a schematic view of a three-terminal motor operator of the present invention.
- FIG. 5 is a circuit diagram of the motor operator of FIG. 4.
- FIG. 4 a schematic view of a three-terminal motor operator is generally shown at 10 .
- the three-terminal motor operator 10 includes a housing 12 that is mounted on top of a molded case circuit breaker 14 .
- a mechanical linkage 16 within the motor operator 10 mechanically interacts with a circuit breaker operating handle 18 , which extends from circuit breaker 14 .
- the mechanical linkage 16 is operatively connected to a series motor 20 within the motor operator 10 .
- the series motor 20 drives the mechanical linkage 16 , which, in turn, moves the operating handle 18 between “on”, “off”, and “reset” positions, depending on the rotational direction of the series motor 20 .
- buttons 22 , 24 control the flow of electrical current to the series motor 20 .
- Buttons 22 , 24 are located remotely from the motor operator 10 .
- Operating power is supplied by power supply lines 50 and 52 .
- Wires 26 and 28 are coupled to power supply line (first power source) 50
- a wire 30 is coupled to power supply line (second power source) 52 .
- Wires 26 and 28 electrically connect to the “on” and “off” buttons 22 and 24 , respectively.
- Extending from “on” and “off” buttons 22 and 24 are wires 32 and 34 , which connect to first and second connection terminals 36 and 38 on the motor controller housing 12 .
- Wire 30 connects to a third connection terminal 40 on the motor controller housing 12 .
- the rotational direction of the series motor 20 is changed depending on whether the “on” or “off” button is selected.
- Selection of the “off” button 24 causes the series motor 20 to rotate in a first direction, which drives the mechanical linkage 16 to position the operating handle 18 towards the “off” or “reset” positions.
- a limit switch (not shown) stops the rotation of the motor 20 .
- selection of the “on” button 22 causes the series motor 20 to rotate in a second direction, which drives the mechanical linkage 16 to position the operating handle 18 towards the “on” position.
- the limit switch stops the rotation of the motor 20 .
- circuit breaker operating handle 18 When the circuit breaker operating handle 18 is moved to the “on” position, electrical contacts (not shown) within the circuit breaker are brought into contact with each other, allowing electrical current to flow through the circuit breaker 14 . When the operating handle 18 is moved to the “off” position, the electrical contacts are separated, stopping the flow of electrical current through the circuit breaker 14 . When the operating handle 18 is moved to the “reset” position, an operating mechanism (not shown) within the circuit breaker 14 is reset, as is necessary after the operating mechanism has tripped in response to an overcurrent condition in the electrical circuit being protected by the circuit breaker 14 . Construction and operation of the circuit breaker is well known in the art.
- FIG. 4 a circuit diagram of the motor operator 10 is shown.
- the first terminal 36 is connected to the single-throw type “ON” switch 22 via wire 34 .
- the “ON” switch 22 in turn is connected to power supply line 50 via wire 26 .
- the second terminal 38 is connected to the single-throw type “OFF” switch 24 via wire 34 .
- the “OFF” switch 24 in turn is connected to the power supply line 50 via wire 28 .
- the third terminal 40 connected to power supply line 52 via wire 30 .
- a resistor (not shown) may be added between the third terminal 40 and the power supply line 52 , as is known in the art.
- the series motor 20 Internal to the motor operator 10 is the series motor 20 , which includes half-coils (half-inductors) 54 and 56 and rotor 58 .
- Half coils 54 and 56 are each wound around a plurality of shoes (not shown) in the series motor 20 .
- a limit switch 60 Also internal to the motor operator 10 is a limit switch 60 , which is electrically connected between the half-coils 54 and 56 and the rotor 58 .
- One end of half-coil 54 is coupled to the terminal 36 .
- the other end of the half-coil 54 is connected to a contact 62 of limit switch 60 .
- One end of half-coil 56 is coupled to the second terminal 38 .
- the other end of the half-coil 56 is connected to a contact 64 of limit switch 60 .
- the third terminal 40 is coupled to the rotor 58 via brushes (not shown).
- the rotor 58 is further coupled via brushes (not shown) to a movable contact arm 66 within the limit switch 60 .
- the rotor 58 and the limit switch 60 are mechanically coupled to the mechanical linkage 16 (FIG. 4) in a manner known in the art.
- a first electrical path (circuit) is formed including the half coil 56 , the contact 64 , the movable contact arm 66 and the rotor 58 .
- the half coil 56 is wound around the plurality of shoes (not shown) within the series motor 20 in a manner such that current flowing through half coil 56 causes a magnetic field that rotates the rotor 58 in a first direction. Rotation of the rotor 58 in the first direction causes the mechanical linkage 16 to move the circuit breaker operating handle 18 towards its “off” or “reset” positions.
- the mechanical linkage 16 causes the movable contact arm 66 of the limit switch 60 to move into contact with contact 62 , breaking the flow of electrical current through half coil 56 and stopping rotation of the rotor 58 .
- the mechanical linkage 16 causes the movable contact arm 66 of the limit switch 60 to move into contact with contact 64 , breaking the flow of electrical current through half coil 54 and stopping the rotation of the rotor 58 .
- the motor operator of the present invention requires only three electrical connections to be established. This in an improvement over the motor operators of the prior art, which require five electrical connections. By reducing the number of electrical connections, the motor operator of the present invention reduces the amount of time needed to install and remove the motor operator.
Landscapes
- Breakers (AREA)
- Mechanisms For Operating Contacts (AREA)
- Motor And Converter Starters (AREA)
Abstract
In the three-terminal motor operator of the present invention, current flowing through half coil causes the rotor to rotate in a first direction, and current flowing through half coil causes the rotor to rotate in a second direction. Rotation of the rotor in the first direction causes the mechanical linkage to move the circuit breaker operating handle towards its “off” or “reset” positions. Rotation of the rotor in the second direction causes the mechanical linkage to move the circuit breaker operating handle towards its “on” position. Pressing the “off” button causes electrical current to flow through the half coil until the circuit is broken by the limit switch. Pressing the “on” button causes electrical current to flow through the half coil until the circuit is broken by the limit switch.
Description
- This application claims the benefit of the Application Number 0003488 filed Mar. 17, 2000 in France, which is incorporated herein by reference.
- This invention relates to a motor operator, and, more particularly, to a motor operator for circuit breakers.
- The use of motor operators to allow the motor-assisted operation of electrical circuit breakers is well known. A motor operator is typically secured to the top of a circuit breaker housing. A lever within the motor operator mechanically interacts with a circuit breaker operating handle, which extends from the circuit breaker housing. The lever is operatively connected to a motor within the motor operator. The motor drives the lever, which, in turn, moves the operating handle to operate the circuit breaker. The operating handle is moved between “on”, “off”, and “reset” positions, depending on the rotational direction of the motor.
- A plurality of buttons external to the motor operator controls electrical current to the motor. The rotational direction of the motor is changed depending on which of these buttons is selected by operating personnel. Thus, the operating personnel can select one button to place the operating handle in the “on” position, and another button to place the operating handle in the “off” or “reset” positions.
- When the handle is moved to the “on” position, electrical contacts within the circuit breaker are brought into contact with each other, allowing electrical current to flow through the circuit breaker. When the handle is moved to the “off” position, the electrical contacts are separated, stopping the flow of electrical current through the circuit breaker. When the handle is moved to the “reset” position, an operating mechanism within the circuit breaker is reset, as is necessary after the operating mechanism has tripped in response to an overcurrent condition in the electrical circuit being protected by the circuit breaker.
- Typically, the motor used within such motor operators is a series motor, as shown in FIG. 1. Series motors are so called because the field coils of the motor are electrically in series with the rotor coil. FIG. 2 is a diagram of the stator of a series motor. The field coils are wound around magnetic pole pieces, called shoes. The field coils and shoes produce the main magnetic field. When current passes through the field coils, one shoe becomes a north pole while the other becomes a south pole. Electrical connection between the field windings and the rotor windings (not shown) is made by brushes (not shown) in contact with a commutator (not shown) of the rotor, as is known in the art.
- In order to change the rotational direction of a series motor, the direction of the current flow to either the rotor or the field must be reversed. A typical arrangement for reversing the current flow is shown in the circuit diagram of FIG. 3. In this arrangement, two double-throw type switches are arranged to operate the motor in two directions, one to position the breaker in the “on” position, the other to position the breaker in the “off” and “reset” positions. As can be seen in FIG. 3, this arrangement requires five electrical connections to be established at the motor operator. It would be desirable to reduce the number of electrical connections in order to reduce the amount of time needed to install and remove the motor operator.
- In an exemplary embodiment of the invention, a motor operator for a circuit breaker has a series motor, which includes a first external terminal coupled to a first half inductor and a second external terminal coupled to a second half inductor. A third external terminal is coupled to a rotor. The first external terminal and the third external terminal form a first electric path, and the second external terminal and the third external terminal form a second electric path.
- FIG. 1 is a prior art series motor;
- FIG. 2 is a stator in the prior art series motor of FIG. 1;
- FIG. 3 is a circuit diagram of a prior art motor operator having five connection terminals;
- FIG. 4 is a schematic view of a three-terminal motor operator of the present invention; and
- FIG. 5 is a circuit diagram of the motor operator of FIG. 4.
- Referring to FIG. 4, a schematic view of a three-terminal motor operator is generally shown at10. The three-
terminal motor operator 10 includes ahousing 12 that is mounted on top of a moldedcase circuit breaker 14. A mechanical linkage 16 within themotor operator 10 mechanically interacts with a circuitbreaker operating handle 18, which extends fromcircuit breaker 14. The mechanical linkage 16 is operatively connected to aseries motor 20 within themotor operator 10. Theseries motor 20 drives the mechanical linkage 16, which, in turn, moves theoperating handle 18 between “on”, “off”, and “reset” positions, depending on the rotational direction of theseries motor 20. - “On” and “Off”
buttons series motor 20.Buttons motor operator 10. Operating power is supplied bypower supply lines Wires wire 30 is coupled to power supply line (second power source) 52.Wires buttons buttons wires second connection terminals third connection terminal 40 on themotor controller housing 12. - The rotational direction of the
series motor 20 is changed depending on whether the “on” or “off” button is selected. Selection of the “off”button 24 causes theseries motor 20 to rotate in a first direction, which drives the mechanical linkage 16 to position theoperating handle 18 towards the “off” or “reset” positions. Once theoperating handle 18 is in the “off” or “reset” position, a limit switch (not shown) stops the rotation of themotor 20. Similarly, selection of the “on”button 22 causes theseries motor 20 to rotate in a second direction, which drives the mechanical linkage 16 to position theoperating handle 18 towards the “on” position. Once theoperating handle 18 is in the “on” position, the limit switch stops the rotation of themotor 20. - When the circuit
breaker operating handle 18 is moved to the “on” position, electrical contacts (not shown) within the circuit breaker are brought into contact with each other, allowing electrical current to flow through thecircuit breaker 14. When theoperating handle 18 is moved to the “off” position, the electrical contacts are separated, stopping the flow of electrical current through thecircuit breaker 14. When theoperating handle 18 is moved to the “reset” position, an operating mechanism (not shown) within thecircuit breaker 14 is reset, as is necessary after the operating mechanism has tripped in response to an overcurrent condition in the electrical circuit being protected by thecircuit breaker 14. Construction and operation of the circuit breaker is well known in the art. - Referring to FIG. 4, a circuit diagram of the
motor operator 10 is shown. Thefirst terminal 36 is connected to the single-throw type “ON”switch 22 viawire 34. The “ON”switch 22 in turn is connected topower supply line 50 viawire 26. Thesecond terminal 38 is connected to the single-throw type “OFF”switch 24 viawire 34. The “OFF”switch 24 in turn is connected to thepower supply line 50 viawire 28. The third terminal 40 connected topower supply line 52 viawire 30. A resistor (not shown) may be added between thethird terminal 40 and thepower supply line 52, as is known in the art. - Internal to the
motor operator 10 is theseries motor 20, which includes half-coils (half-inductors) 54 and 56 androtor 58. Half coils 54 and 56 are each wound around a plurality of shoes (not shown) in theseries motor 20. Also internal to themotor operator 10 is alimit switch 60, which is electrically connected between the half-coils 54 and 56 and therotor 58. One end of half-coil 54 is coupled to the terminal 36. The other end of the half-coil 54 is connected to acontact 62 oflimit switch 60. One end of half-coil 56 is coupled to thesecond terminal 38. The other end of the half-coil 56 is connected to acontact 64 oflimit switch 60. Thethird terminal 40 is coupled to therotor 58 via brushes (not shown). Therotor 58 is further coupled via brushes (not shown) to amovable contact arm 66 within thelimit switch 60. Therotor 58 and thelimit switch 60 are mechanically coupled to the mechanical linkage 16 (FIG. 4) in a manner known in the art. - Referring to FIGS. 4 and 5, if the “off”
button 24 is pressed, a first electrical path (circuit) is formed including the half coil 56, thecontact 64, themovable contact arm 66 and therotor 58. The half coil 56 is wound around the plurality of shoes (not shown) within theseries motor 20 in a manner such that current flowing through half coil 56 causes a magnetic field that rotates therotor 58 in a first direction. Rotation of therotor 58 in the first direction causes the mechanical linkage 16 to move the circuitbreaker operating handle 18 towards its “off” or “reset” positions. Once the operatinghandle 18 reaches the “off” or “reset” position, the mechanical linkage 16 causes themovable contact arm 66 of thelimit switch 60 to move into contact withcontact 62, breaking the flow of electrical current through half coil 56 and stopping rotation of therotor 58. - With the
movable contact arm 66 in contact withcontact 62, pressing the “on”button 24 creates a second electrical path (circuit) including thehalf coil 54, thecontact 62, themovable contact arm 66 and therotor 58. Thehalf coil 54 is wound around the plurality of shoes (not shown) in theseries motor 20 in a manner such that current flowing throughhalf coil 54 causes a magnetic field that rotates therotor 58 in a second direction. Rotation of therotor 58 in the second direction causes the mechanical linkage 16 to move the circuitbreaker operating handle 18 towards its “on” position. Once the operatinghandle 18 reaches the “on” position, the mechanical linkage 16 causes themovable contact arm 66 of thelimit switch 60 to move into contact withcontact 64, breaking the flow of electrical current throughhalf coil 54 and stopping the rotation of therotor 58. - As shown in FIGS. 4 and 5, the motor operator of the present invention requires only three electrical connections to be established. This in an improvement over the motor operators of the prior art, which require five electrical connections. By reducing the number of electrical connections, the motor operator of the present invention reduces the amount of time needed to install and remove the motor operator.
- While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed as the best mode contemplated for carrying out this invention, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (8)
1. A operator for a circuit breaker, the motor operator comprising:
a series motor including,
a first half coil coupled to a first external terminal,
a second half coil coupled to a second external terminal, and
a rotor coupled to a third external terminal, wherein said first external terminal and said third external terminal form a first electric path, and said second external terminal and said third external terminal form a second electric path.
2. The motor operator of , further comprising:
claim 1
a limit switch including,
a first contact coupled to said first half coil,
a second contact coupled to said second half coil, and
a movable contact arm coupled to said rotor for alternately contacting said first contact and said second contact.
3. The motor operator of , further comprising:
claim 1
a first single throw switch for coupling said first terminal to a power source.
4. The motor operator of , further comprising:
claim 3
a second single throw switch for coupling said second terminal to said power source.
5. A motor operated circuit breaker comprising:
a motor operator, including:
a mechanical linkage, and
a series motor including,
a first half coil electrically coupled to a first external terminal,
a second half coil electrically coupled to a second external terminal, and
a rotor electrically coupled to a third external terminal,
wherein said first external terminal and said third external terminal form a first electric path, and said second external terminal and said third external terminal form a second electric path, said rotor being operatively coupled to said mechanical linkage; and
an operating handle, said operating handle being operatively coupled to said mechanical linkage, wherein electrical current through said first electric path causes said operating handle to move in a first direction and electrical current through said second electric path causes said operating handle to move in a second direction.
6. The motor operated circuit breaker of , wherein said motor operator further includes:
claim 5
a limit switch including,
a first contact coupled to said first half coil,
a second contact coupled to said second half coil, and
a movable contact arm coupled to said rotor for alternately contacting said first contact and said second contact.
7. The motor operated circuit breaker of , further comprising:
claim 5
a first single throw switch for coupling said first terminal to a power source.
8. The motor operated circuit breaker of , further comprising:
claim 7
a second single throw switch for coupling said second terminal to said power source.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0003488 | 2000-03-17 | ||
FR0003488A FR2806524B1 (en) | 2000-03-17 | 2000-03-17 | MOTORIZED CONTROL FOR CIRCUIT BREAKER |
Publications (2)
Publication Number | Publication Date |
---|---|
US20010050539A1 true US20010050539A1 (en) | 2001-12-13 |
US6396228B2 US6396228B2 (en) | 2002-05-28 |
Family
ID=8848247
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/731,380 Expired - Fee Related US6396228B2 (en) | 2000-03-17 | 2000-12-06 | Motor operator for a circuit breaker |
Country Status (3)
Country | Link |
---|---|
US (1) | US6396228B2 (en) |
FR (1) | FR2806524B1 (en) |
WO (1) | WO2001069636A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1465226A1 (en) * | 2003-04-03 | 2004-10-06 | Siemens Aktiengesellschaft | Driving device for electrical installation apparatus and related method |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100970316B1 (en) * | 2006-03-20 | 2010-07-15 | 미쓰비시덴키 가부시키가이샤 | Status monitoring device for switch |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE419810B (en) * | 1975-06-23 | 1981-08-24 | Charbonnages Ste Chimique | DEVICE SENSOR DEVICE |
DE3014827C2 (en) * | 1980-04-15 | 1983-10-27 | Siemens AG, 1000 Berlin und 8000 München | Motor drive for low-voltage circuit breakers |
US5005382A (en) * | 1990-01-16 | 1991-04-09 | Eaton Corporation | Electromechanical motor reversing |
JPH0530767A (en) * | 1991-07-17 | 1993-02-05 | Asmo Co Ltd | Automatic stop controller |
DE59309583D1 (en) * | 1992-03-31 | 1999-06-24 | Ellenberger & Poensgen | Remote controllable circuit breaker |
JP2838956B2 (en) * | 1992-06-02 | 1998-12-16 | 三菱電機株式会社 | Electric circuit breaker operating device |
-
2000
- 2000-03-17 FR FR0003488A patent/FR2806524B1/en not_active Expired - Fee Related
- 2000-12-06 US US09/731,380 patent/US6396228B2/en not_active Expired - Fee Related
-
2001
- 2001-03-16 WO PCT/FR2001/000787 patent/WO2001069636A1/en active Application Filing
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1465226A1 (en) * | 2003-04-03 | 2004-10-06 | Siemens Aktiengesellschaft | Driving device for electrical installation apparatus and related method |
Also Published As
Publication number | Publication date |
---|---|
WO2001069636A1 (en) | 2001-09-20 |
FR2806524A1 (en) | 2001-09-21 |
US6396228B2 (en) | 2002-05-28 |
FR2806524B1 (en) | 2002-06-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6801109B2 (en) | Transfer switch including a circuit breaker housing | |
US6861930B2 (en) | Transfer switch including a circuit breaker housing | |
KR920003958B1 (en) | Remote-controlled circuit breaker | |
US6204743B1 (en) | Dual connector strap for a rotary contact circuit breaker | |
US7023303B1 (en) | Actuator for auxiliary switch and circuit breaker incorporating the same | |
TW200522111A (en) | Disconnector | |
KR0149648B1 (en) | Switch configuration with integral sensing and power supply apparatus | |
US6812815B2 (en) | Remotely controllable circuit breaker including bypass magnet circuit | |
US4523115A (en) | Switching device for reversing a portable electric tool | |
US6396228B2 (en) | Motor operator for a circuit breaker | |
CA2437111C (en) | Circuit breaker | |
EP1176697B1 (en) | Field assembly | |
JP3825442B2 (en) | Motor protection circuit breaker accessory | |
CN217588740U (en) | Switch unit and switching device | |
US8035329B2 (en) | Apparatus for actuating an electrical switching device | |
CN109727830A (en) | A kind of circuit breaker operation mechanism driven using electromagnetic vibrator | |
CA2521677C (en) | Actuator for auxiliary switch and circuit breaker incorporating the same | |
WO2002061924A9 (en) | Electronically controlled changeover switch | |
JP3227327B2 (en) | Circuit breaker | |
CN221427581U (en) | Contact system and switching device | |
EP2920805B1 (en) | Electrical switching apparatus employing rotary contact assembly | |
EP1017080B1 (en) | Auxiliary device | |
JPH0487133A (en) | Remote control type circuit breaker | |
JP2807104B2 (en) | Contact breaker | |
KR200221212Y1 (en) | Working apparatus of switch |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: GENERAL ELECTRIC COMPANY, NEW YORK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:GUILLE, SERGE;BURLET, MARC;REEL/FRAME:011364/0968 Effective date: 20001130 |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20100528 |