GB2552734A - An electrical protection device - Google Patents

An electrical protection device Download PDF

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Publication number
GB2552734A
GB2552734A GB1705998.1A GB201705998A GB2552734A GB 2552734 A GB2552734 A GB 2552734A GB 201705998 A GB201705998 A GB 201705998A GB 2552734 A GB2552734 A GB 2552734A
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United Kingdom
Prior art keywords
bracket
protection device
electrical protection
metal conductor
shaft
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Granted
Application number
GB1705998.1A
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GB201705998D0 (en
GB2552734B (en
Inventor
Wenjie Li
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Dalian Ino Tech Co Ltd
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Dalian Ino Tech Co Ltd
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Publication of GB201705998D0 publication Critical patent/GB201705998D0/en
Publication of GB2552734A publication Critical patent/GB2552734A/en
Application granted granted Critical
Publication of GB2552734B publication Critical patent/GB2552734B/en
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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
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/54—Manual reset mechanisms which may be also used for manual release actuated by tumbler
    • 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
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
    • 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
    • H01H71/025—Constructional details of housings or casings not concerning the mounting or assembly of the different internal parts
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal 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
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • 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
    • H01H73/22—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 having electrothermal release and no other automatic release
    • H01H73/24—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 having electrothermal release and no other automatic release reset by lever
    • 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
    • H01H73/36—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 having electromagnetic release and no other automatic release
    • H01H73/38—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 having electromagnetic release and no other automatic release reset by lever
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/015—Boards, panels, desks; Parts thereof or accessories therefor
    • H02B1/04—Mounting thereon of switches or of other devices in general, the switch or device having, or being without, casing
    • H02B1/052—Mounting on rails
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/015—Boards, panels, desks; Parts thereof or accessories therefor
    • H02B1/04—Mounting thereon of switches or of other devices in general, the switch or device having, or being without, casing
    • H02B1/052—Mounting on rails
    • H02B1/0523—Mounting on rails locked into position by a sliding member
    • 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
    • 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
    • H01H73/48—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 having both electrothermal and electromagnetic automatic release
    • H01H73/50—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 having both electrothermal and electromagnetic automatic release reset by lever
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Patch Boards (AREA)

Abstract

An electrical protection device comprises an operation mechanism having a bracket (5, figure 1) connected to and configured to move around a first shaft (4, figure 1), one side of the bracket having a protruding shoulder 6 adjacent the first shaft. The shoulder bears on a first metal conductor 7, which is fixed at one end and to an L pole component 8 (or live terminal) to supply power. The other end of the first conductor may extend to a top internal corner of the case to make contact with a second metal conductor 9, which may be fixed to the case. The two conductors and bracket may form a switching device. When the device is switched on, the bracket and may move around the first shaft and the shoulder may bear against the first metal conductor to rotate it into contact with the second metal conductor. When the conductors are separated, the pushbutton 11 and PCB board 12 (figure 1) are in an OFF-condition.

Description

(71) Applicant(s):
Dalian Ino-Tech Co., Limited
Room 316 Unit 1, No.51, Xishan Village,
Shahekou District, Dalian, Liaoning, China (51) INT CL:
H01H 83/02 (2006.01) H01H 73/24 (2006.01) H01H 73/50 (2006.01) H01H 83/20 (2006.01) (56) Documents Cited:
WO 2002/080329 A1 US 5331301 A (58) Field of Search:
INT CL H01H
H01H 71/52 (2006.01) H01H 73/38 (2006.01) H01H 83/14 (2006.01)
CN 101930883 A
Other: EPODOC, WPI, Patent Fulltext (72) Inventor(s):
Li Wenjie (74) Agent and/or Address for Service:
Murgitroyd & Company
Scotland House, 165-169 Scotland Street, GLASGOW, G5 8PL, United Kingdom (54) Title of the Invention: An electrical protection device
Abstract Title: Switching mechanism for a residual current circuit breaker (57) An electrical protection device comprises an operation mechanism having a bracket (5, figure 1) connected to and configured to move around a first shaft (4, figure 1), one side of the bracket having a protruding shoulder 6 adjacent the first shaft. The shoulder bears on a first metal conductor 7, which is fixed at one end and to an L pole component 8 (or live terminal) to supply power. The other end of the first conductor may extend to a top internal corner of the case to make contact with a second metal conductor 9, which may be fixed to the case. The two conductors and bracket may form a switching device. When the device is switched on, the bracket and may move around the first shaft and the shoulder may bear against the first metal conductor to rotate it into contact with the second metal conductor. When the conductors are separated, the pushbutton 11 and PCB board 12 (figure 1) are in an OFF-condition.
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AN ELECTRICAL PROTECTION DEVICE
The following Statement is a full description of this invention including the best method of performing it known to me/us:
TITLE “AN ELECTRICAL PROTECTION DEVICE”
FIELD OF THE INVENTION
The present invention relates to an electrical protection device, which is to switch on and off current under low voltage of for example 415V, and meanwhile provide protection to various loads, such as instantaneous high current shock in case of short circuit, overload, or electric shock.
BACKGROUND
The present invention attempts to overcome at least in part disadvantages of previously known electrical protection devices. The electrical device of the present invention is arranged to switch on and off the residual current circuit breaker with overcurrent circuit protection (RCBO). The RCBO can disconnect effectively not only in the abnormal circuit conditions, but also in the faulty circuit conditions. Usually the short circuit current of an instantaneous 6000A or above generated in a circuit, which will fail to be disconnected when using a normal breaker it is necessary to use an RCBO.
Secondly the residual protection relates to a pushbutton system, and the traditional operation mechanism of the RCBO after power off, either L or N will not be disconnected. This means only one connection terminal is disconnected. Thus, if the pushbutton system is pressed when the RCBO is power off, the current will go through the button which provides a potential risk of electric shock.
Moreover, when the traditional RCBO is connected to cables, or wire the conductor is driven by the connection clamp to rise to fasten the enabled wire or conductor.
When in the process of fastening, the movement direction of the connection clamp is to secure the wire or conductor until the metal clamp is completely fastened. When a bus bar is connected with cables, the connection height is the position of a metal clamp, which will not be lower. However, a much lower connection height is required in most European type power distribution boards, so the traditional RCBO has no way to fit and also it is not easy to assemble in such a lower height bus bar.
Finally, the fixed clip of the traditional RCBO is assembled with more accessories, which will cost more time in the production line and will be inconvenient for disassembling when necessary.
SUMMARY OF THE INVENTION
The present invention provides a solution to the above issues, and is an electrical protection device which is relatively small with simple components. The switching device is also designed in the operation mechanism to disconnect the pushbutton system to avoid the current being conveyed to the disconnected L pole occasionally by pressing the button when the RCBO is switched off.
The present invention can fit a lower bus bar when assembled with cables. The design is to make the metal clamp push the wire or conductor downward in the middle position of the connection clamp until fastening the wire and conductor, and the connection height is fixed on the bottom of the connection clamp, which will be fixed securely.
The last is to use an integrated plastic fixed clip to provide quick installation and assembly to reduce production cost accordingly.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
Figure 1 shows front schematic plan of an electrical protection device;
Figure 2 shows negative schematic plan of the electrical protection device of figure 1;
Figure 3 shows a base hole of an internal wall for electrical protection device of the device of figure 1;
Figure 4 shows a schematic drawing 1 of an operation mechanism for the electrical protection device of figure 1;
Figure 5 shows a schematic drawing 2 of the operation mechanism for the electrical protection device of figure 1;
Figure 6 shows a schematic drawing 3 of the operation mechanism for the electrical protection device of figure 1;
Figure 7 shows a schematic drawing 1 of a case for the electrical protection device of figure 1;
Figure 8 shows a schematic drawing 2 of the case for the electrical protection device of figure 1;
Figure 9 shows a schematic drawing 1 of bottom fixed clip for the electrical protection device of figure 1.
Figure 10 shows a schematic drawing 2 of the case for the electrical protection device of figure 1;
Figure 11 shows a base schematic of the electrical protection device of figure
1.
DESCRIPTION OF PREFERRED EMBODIMENTS
The present invention aims to provide an electrical protection device in a small size with simple and useful accessories, high space utilization and sensitivity, and being well latched.
In order to meet these requirements, the electrical protection device is realized by the following characteristics: An electrical protection device includes a case (1) (see figure 7), a cover (15), an operation mechanism (3 (see figure 4), and a first shaft (4). The mentioned operation mechanism (3) is provided with a bracket (5) which connects with the first shaft (4) and moves along the first shaft (4) to operate.
A side of the bracket (5) is provided with a protruding shoulder (6) near to the first shaft (4). The shoulder (6) is provided with a position on both ends of a first metal conductor (7), and the mentioned first metal conductor (7) is fixed on the case (1) near to one end, and another ending part is connected to an L pole component (8) (see figure 2) to supply power. The one end of the first metal conductor (7) extends to a top corner of the case (1) to make an opposite position relating to a metal conductor (9). The mentioned metal conductor (9) is also fixed on the case.
The first metal conductor (7), the metal conductor (9) and the bracket (5) constitute a switching device (10).
As shown in figure 3, when the electrical protection device is switched on the bracket (5) of the shoulder (6) moves along the first shaft (4) to rotate the first metal conductor (7) until contacting the metal conductor (9). The switching device is then on-state current.
When the electrical protection device is switched off, the first metal conductor (7) is separated from the metal conductor (9) synchronously. The switching device disconnects the current so that the pushbutton and PCB board is in an off-state condition.
The bracket (5) is provided with a locking catch (13). The movable limiting inside of one end of the locking catch is connected with an electric overload rod (14) (see figure 2). The mentioned electric overload rod (14) is located on one side of a cover (15) near to the base (16). The other end of the electric overload rod (14) is provided with a stop lever (17) which extends to one side of a bi-metal element (18) through the cover (15). A stop lever (17) of the overload rod (14) passes through the cover (15) and positions in an intersecting slot (19) (see figure 2). The mentioned intersecting slot (19) causes the overload bar (14) to move in a restrictive trajectory back and forth, and the trajectory is determined by the shape of the slot (19).
One end of the mentioned electrical protection device is provided with a wiring device (23), including a wire frame (20), a metal clamp (21) and a threaded rod (22). One end of the threaded rod (22) has a transversely circular head with the exception of the head, and the long rod (22) is threaded. The circular head of the threaded rod (22) is embedded in a metal clamp (21), where there is a circular hole of the bending end of the metal clamp (21). The threaded rod (22) is movable in the circular hole. The metal clamp (21) is rotated in the round hole and is driven by the external torque force action with respect to the metal clamp (21), and the up and down displacement of the metal clamp in the wire frame.
The threaded rod (22) positions through a clamp screw hole (24) of the wiring device (23) and does up and down movement of the wiring clamp by outer force rotation. The upward movement of the threaded rod (22) drives the metal clamp (21) to loosen the wiring device (23), the downward movement of the thread rod (22) drives the metal clamp to fix the wiring device (23).
The wiring frame (20) is fixed to the electrical protection device and not displaced at one end of the case relative to the threaded rod (22) and metal clamp (21).
The electrical protection device also includes a fixed clip (25) on the base.
As shown in figure 10 the fixed clip (25) is an integrated plastic injection mould of an inner bottom side (26) of each line of the fixed clip (25) is provided with buckle step 1 and 2, and a gap (27) is located in the middle part between the buckle step 1 and step 2, and the gap (27) is a positioning guide hole to assemble the fixed clip.
As shown in figure 9 the fixed clip (25) is with two suitable slide railings (28), and these two slide railings (28) are designed symmetrically. The slide railings (28) each have two curved bends (29), and the two slide railings on one end in the centre position does not extend to the inter channel, however to form a declining stop block (30) on the end.
As shown in figure 8 one end of the surface of the electrical protection device base is provided with a mounting boss (31) of the fixed clip (25), and the said mounting boss (31) is provided with the first stair (32) and the second stair (33). The two outer sides of the first stair (32) are provided with a symmetrical obtuse angle surface, and the internal side is rectangular recess (35), when it is assembled with the mounting clip (25), the stop block (30) of the fixed clip (25) can be shifted to the rectangular recess (35) to stop position.
The two sides of the second stair are also provided with symmetrical recess. The stair to the electrical protection device is arranged with slide way, and the stair 1 of the mounting clip goes into the slide for installation through the stair 1.

Claims (8)

1. An electrical protection device comprising a case (1), an operation mechanism (3) provided with a bracket (5) that is able to connect with a first shaft (4) and move along the first shaft (4), wherein one side of the bracket (5) is provided with a protruding shoulder (6) adjacent to the first shaft (4), the shoulder (6) being provided with a first metal conductor (7), the first metal conductor (7) being fixed to the case (1) adjacent one end and at an opposite end being connected to an L pole component (8) to supply power.
2. An electrical protection device according to claim 1, wherein the opposite end of the first metal conductor (7) extends to a top corner of the case (1) internally to make an opposite connection with a metal conductor (9), the metal conductor (9) being also fixed to the case (1), the first metal conductor (7), the bracket (5) and the metal conductor (9) constituting a switching device (10).
3. An electrical protection device according to claim 1, wherein when the electrical protection device is switched on the bracket (5) with the shoulder (6) moves along the first shaft (4) to rotate the first metal conductor (7) until contacting the metal conductor (9) such that the switching device (10) is in an on current state.
4. An electrical protection device according to any one of the preceding claims, wherein when the electrical protection device is switched off the first metal conductor (7) is separated from the metal conductor (9) synchronously and the switching device (10) disconnects the current connection to a pushbutton (11) to make the pushbutton (11) and a PCB board (12) in an off-state condition.
5. An electrical protection device according to anyone of the preceding claims, wherein the bracket (5) is provided with a locking catch (13) so that one end of the locking catch (13) connects with an electric overload rod (14) which is provided with a stop lever (17), the stop lever (17) being arranged to interconnect with an intersecting slot (19) and the intersecting slot (19) leading the overload rod (14) to move in a restrictive trajectory backwards and forwards determined by the shape of the slot (19).
6. An electrical protection device according to claim 5, wherein the locking catch (13) is sleeve-connected with the first shaft (4) and an axial torsion spring (38) is provided internal of the first shaft (4), characterised in that the axial torsion spring (38) is mounted to a locking protrusion (2) of the locking catch (13), and one end (40) of the axial torsion spring (38) locks and secures the locking protrusion (2) of the locking catch (13), and the locking protrusion (2) of the locking catch (13) fits together with the axial torsion spring (38) extending to a slot (41) of the bracket (5), and the other end (42) of the axial torsion spring (38) is laid on a wall of the slot (41) of the bracket (5) and the first shaft (4) goes through one side of the bracket (5) and passes the axial torsion spring (38) by the locking protrusion (2) of the locking catch (13), further penetrates an other side of the bracket (5) into an inner base hole (43) of an inside wall of the case (1) in order to make the locking catch (13) couple with the bracket (5).
7. An electrical protection device according to anyone of the preceding claims, wherein one end of the device is provided with a wiring device (23) including a wire frame (20), metal clamp (21) and threaded rod (22), wherein one end of the threaded rod (22) has a laterally circular head and the remainder of the rod is an elongated threaded rod (22), the laterally circular head is embedded in a metal clamp (21) wherein upward movement of the threaded rod (22) the metal clamp (21) is driven so as to loosen the wiring device (23) whereas upon downward movement of the threaded rod (22) the metal clamp (21) is driven to fix the wiring device (23).
8. An electrical protection device according to anyone of the preceding claims, further comprising a base (16) having a mounting boss (31) upon which a fixed clip (25) is mounted.
Intellectual
Property
Office
Mr Jody Fellows
10 November 2017
GB1705998.1
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Application No: Claims searched:
GB1705998.1A 2016-04-14 2017-04-13 An electrical protection device Active GB2552734B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610231037.4A CN105702537B (en) 2016-04-14 2016-04-14 Electric protective device

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GB201705998D0 GB201705998D0 (en) 2017-05-31
GB2552734A true GB2552734A (en) 2018-02-07
GB2552734B GB2552734B (en) 2021-11-03

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AU (2) AU2017100419A4 (en)
GB (1) GB2552734B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108155068B (en) * 2018-02-02 2024-01-26 浙江奥来电器有限公司 Circuit breaker with disconnectable live wire and zero wire

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WO2002080329A1 (en) * 2001-03-30 2002-10-10 Pdl Holdings Limited A compact circuit interuption device
CN101930883A (en) * 2010-09-16 2010-12-29 方华朋 Small-sized breaker

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US4713639A (en) * 1987-02-20 1987-12-15 Westinghouse Electric Corp. Circuit breaker with push-to-trip button and trip bar
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JP2007265678A (en) * 2006-03-27 2007-10-11 Tempearl Ind Co Ltd Circuit breaker
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AU2017202430A1 (en) 2017-11-02
GB201705998D0 (en) 2017-05-31
CN105702537A (en) 2016-06-22
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CN105702537B (en) 2017-12-01
GB2552734B (en) 2021-11-03

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