EP4131308B1 - Schutzschalter - Google Patents

Schutzschalter Download PDF

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Publication number
EP4131308B1
EP4131308B1 EP22188427.3A EP22188427A EP4131308B1 EP 4131308 B1 EP4131308 B1 EP 4131308B1 EP 22188427 A EP22188427 A EP 22188427A EP 4131308 B1 EP4131308 B1 EP 4131308B1
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EP
European Patent Office
Prior art keywords
lock catch
circuit breaker
pole
shaft
pole circuit
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.)
Active
Application number
EP22188427.3A
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English (en)
French (fr)
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EP4131308A1 (de
Inventor
Guanshang SUN
Yanhai Zhou
Senlin LAI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xiamen Hongfa Electrical Safety and Controls Co Ltd
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Xiamen Hongfa Electrical Safety and Controls Co Ltd
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Publication of EP4131308A1 publication Critical patent/EP4131308A1/de
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Publication of EP4131308B1 publication Critical patent/EP4131308B1/de
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/1009—Interconnected mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/1045—Multiple circuits-breaker, e.g. for the purpose of dividing current or potential drop
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
    • H01H2009/265—Interlocking, locking, or latching mechanisms for interlocking two or more switches with interlocking of more than two switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/1009—Interconnected mechanisms
    • H01H2071/1036—Interconnected mechanisms having provisions for four or more poles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H7/00—Devices for introducing a predetermined time delay between the initiation of the switching operation and the opening or closing of the contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/1009—Interconnected mechanisms
    • H01H71/1027—Interconnected mechanisms comprising a bidirectional connecting member actuated by the opening movement of one pole to trip a neighbour pole

Definitions

  • the invention relates to the field of switchgear, in particular to a circuit breaker, and in particular to the improvement of a remote tripping and opening mechanism.
  • N-pole In a circuit breaker with N-pole, there are often design requirements for N-pole to close first and open post.
  • the N-pole being closed first and opened post can ensure that the arc generated by the N-pole circuit breaker is small (or even no arc), the impact on the device is low, and the safety is high.
  • the N-pole circuit breaker can also be equipped with no arc extinguishing chamber, which has more abundant installation space.
  • the N pole is closed first and opened post, if the circuit breaker is virtually closed or open (that is, the circuit breaker is not fully closed or opened), at this time it can only be that the N-pole is in the closed state or the N-pole is not completely disconnected. Therefore, although the circuit breaker is not completely opened and closed, it ensures that only the N-line is connected to the load, avoiding the danger of electric shock during overhaul for the operator.
  • the publication CN 206 877 941 U describes a circuit breaker according to the preamble of claim 1.
  • the present invention proposes a circuit breaker with an optimized structure to solve the design requirement of the N-pole being post-opened in a delayed manner under the remote opening link.
  • the present invention adopts the following technical schemes to be implemented:
  • the present invention provides a circuit breaker, which includes a remote opening controller, an N-pole circuit breaker and an L-pole circuit breaker.
  • the L-pole circuit breaker includes an L-pole lock catch for realizing its tripping and opening
  • the N-pole circuit breaker includes an N-pole lock catch for realizing its tripping and opening.
  • the circuit breaker further includes a lock catch shaft, the N-pole lock catch is provided with a socket for realizing delayed tripping.
  • One end of the lock catch shaft is connected and fitted with the remote opening controller, the lock catch shaft passes through the socket on the N-pole lock catch, and another end of the lock catch shaft is connected and fitted with the L-pole lock catch.
  • the shape of the socket is configured to be capable of accommodating the lock catch shaft to abut against the socket after the lock catch shaft conducts a certain movement stroke.
  • the remote opening controller receives a remote signal and drives the lock catch shaft to generate a tripping stroke.
  • the L-pole lock catch connected and fitted with another end of the lock catch shaft is driven to trip and open synchronously, but, since the lock catch shaft only abuts against the socket after moving for a certain stroke, the N-pole lock catch is driven to trip and open in a delayed manner.
  • the shape of the shape of the socket is a shape of an oblong hole matching with a tripping stroke route of the lock catch shaft.
  • the width of the oblong hole is preferably slightly larger than the outer diameter of the lock catch shaft.
  • another end of the lock catch shaft is plug-fitted and fixed with the L-pole lock catch.
  • the circuit breaker is a multi-pole circuit breaker including an L1-pole circuit breaker, an L2-pole circuit breaker and an L3-pole circuit breaker corresponding to three-phase current; the L1- pole circuit breaker, the L2-pole circuit breaker, the L3-pole circuit breaker, the N-pole circuit breaker and the remote opening controller are arranged and cascaded in sequence, and the L-pole lock catch is provided on the L3-pole circuit breaker adjacent to the N-pole circuit breaker.
  • the L-pole circuit breaker includes only one-pole L-pole circuit breaker.
  • the L1-pole circuit breaker includes a first lock catch for realizing its tripping and opening; the L2-pole circuit breaker includes a second lock catch for realizing its tripping and opening; the L3-pole circuit breaker includes a third lock catch for realizing its tripping and opening and being used as the L-pole lock catch; and the first lock catch, the second lock catch and the third lock catch are connected in linkage.
  • the L1-pole circuit breaker further includes a first lock catch shaft with one end plugged and fixed on the first lock catch; the L2-pole circuit breaker further includes a second lock catch shaft with one end plugged and fixed on the second lock catch; another end of the first lock catch shaft is plugged into the second lock catch, and anther end of the second lock catch shaft is plugged into the third lock catch, so that when the third lock catch moves, the second lock catch is linked to move first, and then the first lock catch is linked to move by the second lock catch.
  • the L3-pole circuit breaker further includes a third lock catch shaft with one end plugged and fixed on the third lock catch, being used as the lock catch shaft;
  • the remote opening controller is a shunt trip, including a shunt push rod for driving opening;
  • the third lock catch shaft passes through the socket on the N-pole lock catch and extends into the shunt trip, and acts under push of the shunt push rod.
  • each the end of the first lock catch shaft, the second lock catch shaft and the third lock catch shaft for plug-fit is knurled.
  • the N-pole circuit breaker and the L-pole circuit breaker coincides with each other in the arrangement direction of the circuit breaker, and the static contact of the N-pole circuit breaker is arranged more forward than the static contact of the L-pole circuit breaker, such that the spacing between the moving contact and static contact in the N-pole circuit breaker is smaller than the spacing between the moving contact and static contact in the L-pole circuit breaker.
  • the invention has the following beneficial effects: the invention realizes that the N-pole is opened afterward when the circuit breaker is remotely opened, with a simple structure and good reliability.
  • an existing multi-pole circuit breaker with a shunt trip consists of an L-pole circuit breaker, an N-pole circuit breaker and an S-pole shunt trip, which are cascaded in series in sequence.
  • the shunt trip When a shunt signal is received, the shunt trip first acts on a lock catch of the N-pole circuit breaker, to trip and open the N-pole circuit breaker, and the lock catch of the N-pole circuit breaker is linked with the lock catches of other-pole circuit breaker to make the other-pole circuit breaker open, in which the design requirement of the N-pole being post-opened cannot be achieved.
  • a multi-pole circuit breaker which includes an L1-pole circuit breaker 1, an L2-pole circuit breaker 2, an L3-pole circuit breaker 3, a N-pole circuit breaker 4 and S-pole shunt trip 5 cascaded in series in sequence.
  • L1-pole circuit breaker 1, L2-pole circuit breaker 2 and L3-pole circuit breaker 3 correspond to three-phase power supply respectively.
  • N-pole circuit breaker 4 corresponds to neutral line, and S-pole shunt trip 5 is used to receive shunt signal and drive each pole circuit breaker to shunt trip remotely.
  • the L1-pole circuit breaker 1 includes a first lock catch 11 for realizing its tripping and opening, and a first lock catch shaft 12 plug-fitted and fixed on the first lock catch 11;
  • the L2-pole circuit breaker 2 includes a second lock catch 21 for realizing its tripping and opening, and a second lock catch shaft 22 plug-fitted and fixed on the second lock catch 21;
  • the L3-pole circuit breaker 3 includes a third lock catch 31 (as the L-pole lock catch), and a third lock catch shaft 32 plug-fitted and fixed on the third lock catch 31;
  • the N-pole circuit breaker 4 includes the fourth lock catch 41 (i.e. the N-pole lock catch);
  • the S-pole shunt trip 5 includes a shunt push rod 51.
  • the first lock catch 11, the second lock catch 21, the third lock catch 31 and the fourth lock catch 41 are side by side.
  • the first lock catch shaft 12 is further plugged into a linkage hole of the second lock catch 21.
  • the second lock catch shaft 22 is further plugged into a linkage hole of the third lock catch 31.
  • the L1-pole circuit breaker 1, the L2-pole circuit breaker 2 and the L3-pole circuit breaker are linked integrally through the linkage of the first lock catch shaft 12 and the second lock catch shaft 22.
  • the linkage between the L3-pole circuit breaker 3 and the N-pole circuit breaker 4 is realized by the third lock catch 31 (as the L-pole lock catch), the third lock catch shaft 32 and the fourth lock catch 41 (as the N-pole lock catch).
  • the fourth lock catch 41 is provided with an oblong hole 411 (as a socket) for realizing delayed tripping.
  • the third lock catch shaft 32 passes through the oblong hole 411 of the fourth lock catch 41 and extends into the S-pole shunt trip 5 to cooperate with the actuation of the shunt push rod 51.
  • an electromagnetic drive mechanism 52 pushes the shunt push rod 51 to swing, and the shunt push rod 51 pushes the third lock catch shaft 32 during the swinging process.
  • the third lock catch shaft 32 has a tripping stroke for tripping and opening each pole circuit breaker.
  • the oblong hole 411 is set along the tripping stroke route of the third lock catch shaft 32.
  • the working principle of this embodiment is: when the S-pole shunt trip 5 receives a shunt signal, the shunt push rod 51 swings and pushes the third lock catch shaft 32, so that the third lock catch shaft 32 has a tripping stroke; the third lock catch shaft 32 is linked with the third lock catch 31, the third lock catch 31 is further linked with the second lock catch 21, and then the second lock catch 21 is linked with the first lock catch 11, so that the L3-pole circuit breaker 3, the L2-pole circuit breaker 2 and the L1-pole circuit breaker 1 are tripped and opened; at the same time, since the socket on the fourth lock catch 41 is an oblong hole 411, during the movement and trip of the third lock catch 31, the second lock catch 21 and the first lock catch11, the third lock catch shaft 32 further moves in the oblong hole 411, and finally abuts against the end of the oblong hole 411, so that the fourth lock catch 41 is triggered; the third lock catch shaft 32
  • the socket on the fourth lock catch 41 is an oblong hole 411, but in other embodiments, it can also be replaced with sockets of other structures, such as a fan-shaped hole, a round hole with a larger diameter, a square hole, special-shaped holes, etc., as long as the shape of the socket is configured to be able to accommodate the third lock catch shaft 32 to abut against with it after a certain movement stroke.
  • the oblong hole 411 is used, which can match the shunt swing routine of the third lock catch shaft 32 better and reduce the wear of the third lock catch shaft 32.
  • a more preferred solution is that the width of the oblong hole 411 is slightly larger than the outer diameter of the third lock catch shaft 32 to further reduce the wear of the third lock catch shaft 32.
  • the fit between the third lock catch shaft 32 and the third lock catch 31 may be any fit manner as long as synchronous linkage may be realized. That is, when the third lock catch shaft 32 swings for tripping and opening, it can drive the third lock catch 31 to move with it synchronously.
  • the third lock catch shaft 32 and the third lock catch 31 are connected and fitted by adopting plug-fit and fixation, which is more convenient for installation and manufacture.
  • the plug end of the third lock catch shaft 32 and the third lock catch 31 are knurled.
  • the plug ends of the first lock catch shaft 12 and the second lock catch shaft 22 can also be knurled.
  • the third lock catch shaft 32 is extended to pass through the oblong hole 411 provided on the fourth lock catch 41 and into the S-pole shunt trip 5 to fit with the shunt push rod 51.
  • the manufacturing cost is low, the assembly process is simple, and more importantly, post-opening of the N-pole is very reliable, and the design requirement of the N-pole being post-opened in a delayed manner under the remote shunt trip link are realized.
  • the linkage connection of the L1-pole circuit breaker 1, the L2-pole circuit breaker 2 and the L3-pole circuit breaker 3 is realized by the second lock catch shaft 22 and the first lock catch shaft 12.
  • only one lock catch shaft may be used, that is, the one lock catch shaft is connected in series with the L1-pole circuit breaker 1, the L2-pole circuit breaker 2 and the L3-pole circuit breaker 3 to realize the linkage connection of the three, but in this structure the one lock catch shaft needs to push lock catches of the three circuit breaker at the same time, which is laborious and requires a large driving force.
  • the second lock catch shaft 22 and the first lock catch shaft 12 are used to form a segmented linkage.
  • the third lock catch 31 is linked to the second lock catch 21 first through the second lock catch shaft 22, and then the second lock catch 21 is linked to the first lock catch 11 through the first lock catch shaft 12, which requires less driving force and saves more effort.
  • the above-mentioned segments of the lock catch shafts may have different shapes (such as different cross-sectional shapes, different thicknesses, etc.), but based on consideration of modular production and the difficulty of manufacturing and assembly, it is preferable to choose each segment of the lock catch shaft with a same shape, then the shape of the sockets on the first lock catch 11, the second lock catch 21 and the third lock catch 31 may also be configured to be the same.
  • the S-pole shunt trip 5 in some embodiments is essentially a remote opening controller. In other embodiments, it can also be replaced with an overvoltage trip, an undervoltage trip, or an overvoltage and undervoltage trip.
  • the N-pole circuit breaker is configured to close first and open post in the case of manual opening and closing.
  • the L1-pole circuit breaker 1 includes an L1-pole static contact 13 and an L1-pole moving contact 14
  • the L2-pole circuit breaker 2 includes an L2-pole static contact 23 and an L2-pole moving contact 24
  • the L3-pole circuit breaker 3 includes an L3-pole static contact 33 and an L3-pole moving contact 34
  • the N-pole circuit breaker 4 includes an N-pole static contact 43 and an N-pole moving contact 44, where the positions of the L1-pole moving contact 14, the L2-pole moving contact 24, the L3-pole moving contact 34 and the N-pole moving contact 44 coincide with each other in the arrangement direction (that is, the left and right directions in the figure) of the multi-pole circuit breaker, and the position of the N-pole static contact 43 is set
  • the N-pole circuit breaker 4 when manually closing, the N-pole circuit breaker 4 will close first due to the smaller spacing between the moving and static contact, and has a certain overtravel after the L-pole circuit breaker is closed.
  • the N-pole circuit breaker 4 needs to return to overtravel first, so that the N-pole circuit breaker 4 will also be opened post.
  • the third lock catch shaft 32 passing through the oblong hole 411 of the N-pole, when shunt tripping, the shunt push rod pushes the third lock catch 31 to trip, then the third lock catch shaft 32 continues to move and abut against with the oblong hole 411, driving the N-pole to trip.
  • the N-pole static contact 43 has a larger overtravel than the L-pole static contact as it is set more forward. When shunt tripping, the disconnection of the N-pole contact will also play a certain delaying role.
  • the present embodiment provides a circuit breaker, including an L-pole circuit breaker 6, an N-pole circuit breaker 7 and an S-pole shunt trip 8 that are cascaded side by side in sequence, where the fit manner between the L-pole circuit breaker 6 and the N-pole circuit breaker 7 is the same as that between the L3-pole circuit breaker 3 and the N-pole circuit breaker 4 in Embodiment 1.
  • the lock catch shaft 61 of the L-pole circuit breaker 6 passes through the waist-shaped opening on the lock catch of the N-pole circuit breaker 7 and extends into the S-pole shunt tripper 8, the effect of which is the same as that in Embodiment1, and the post-opening of the of the N-pole circuit breaker in remote tripping is realized.
  • Embodiment 1 The difference between this embodiment and Embodiment 1 is that there is only one L-pole circuit breaker. Obviously, the number of the L-pole circuit breaker provided does not affect the fit with the N-pole circuit breaker. No matter in the solution of this embodiment with only one L-pole circuit breaker, or in the solution of Embodiment 1 with three L-pole circuit breakers, the above-mentioned structure with the N-pole being post-opened can be adopted.

Claims (10)

  1. Schutzschalter, umfassend einen L-poligen Schutzschalter (3, 6), einen N-poligen Schutzschalter (4, 7) und eine Fernöffnungssteuerung (5, 8), wobei der L-polige Schutzschalter (3, 6) eine L-polige Sperrklinke (31) zum Auslösen und Öffnen derselben aufweist und der N-polige Schutzschalter (4, 7) eine N-polige Sperrklinke (41) zum Auslösen und Öffnen derselben aufweist, dadurch gekennzeichnet, dass:
    der Schutzschalter ferner eine Sperrklinkenwelle (32, 61) umfasst; die N-polige Sperrklinke (41) mit einer Buchse (411) zum verzögerten Auslösen bereitgestellt ist; ein Ende der Sperrklinkenwelle (32, 61) mit der Fernöffnungssteuerung (5, 8) verbunden und eingepasst ist, die Sperrklinkenwelle (32, 61) durch die Buchse (411) an der N-poligen Sperrklinke (41) hindurchgeht und ein anderes Ende der Sperrklinkenwelle (32, 61) mit der L-poligen Verriegelungsklinke (31) verbunden und eingepasst ist; eine Form der Buchse (411) dazu konfiguriert ist, in der Lage zu sein, die Sperrklinkenwelle (32, 61) aufzunehmen, um an der Buchse (411) anzuliegen, nachdem die Sperrklinkenwelle (32, 61) einen bestimmten Bewegungshub ausgeführt hat; die Fernöffnungssteuerung (5, 8) ein Fernsignal empfängt und die Sperrklinkenwelle (32, 61) antreibt, um einen Auslösehub zu erzeugen; die mit einem anderen Ende der Sperrklinkenwelle (32, 61) verbundene und eingepasste L-polige Sperrklinke (31) zum synchronen Auslösen und Öffnen angetrieben wird, aber, da die Sperrklinkenwelle (32, 61) nur an der Buchse (411) anliegt, nachdem sie sich um einen bestimmten Hub bewegt hat, die N-polige Sperrklinke (41) zum verzögerten Auslösen und Öffnen angetrieben wird.
  2. Schutzschalter nach Anspruch 1, dadurch gekennzeichnet, dass die Form der Buchse (411) eine Form eines Langlochs (411) aufweist, das mit einer Auslösungshubstrecke der Sperrklinkenwelle (32, 61) übereinstimmt.
  3. Schutzschalter nach Anspruch 2, dadurch gekennzeichnet, dass eine Breite des Langlochs (411) geringfügig größer ist als ein Außendurchmesser der Sperrklinkenwelle (32, 61).
  4. Schutzschalter nach einem oder mehreren der Ansprüche 1-3, dadurch gekennzeichnet, dass ein anderes Ende der Sperrklinkenwelle (32, 61) mit der L-poligen Sperrklinke (31) zusammengesteckt und daran befestigt ist.
  5. Schutzschalter nach einem oder mehreren der Ansprüche 1-4, dadurch gekennzeichnet, dass der Schutzschalter ein mehrpoliger Schutzschalter ist, der einen L1-poligen Schutzschalter (1), einen L2-poligen Schutzschalter (2) und einen L3-poligen Schutzschalter (3) entsprechend einem Drehstrom umfasst; der L1-polige Schutzschalter (1), der L2-polige Schutzschalter (2), der L3-polige Schutzschalter (3), der N-polige Schutzschalter (4) und die Fernöffnungssteuerung (5) in Folge angeordnet und kaskadiert sind, und die L-polige Sperrklinke (31) an dem L3-poligen Schutzschalter (3) neben dem N-poligen Schutzschalter (4) bereitgestellt ist.
  6. Schutzschalter nach Anspruch 5, dadurch gekennzeichnet, dass der L1-polige Schutzschalter (1) eine erste Sperrklinke (11) zum Auslösen und Öffnen desselben aufweist; der L2-polige Schutzschalter (2) eine zweite Sperrklinke (21) zum Auslösen und Öffnen desselben aufweist; der L3-polige Schutzschalter (3) eine dritte Sperrklinke (31) zum Auslösen und Öffnen derselben als L-polige Sperrklinke (31) aufweist; und wobei die erste Sperrklinke (11), die zweite Sperrklinke (21) und die dritte Sperrklinke (31) in einem Gestänge verbunden sind.
  7. Schutzschalter nach Anspruch 6, dadurch gekennzeichnet, dass: der L1-polige Schutzschalter (1) ferner eine erste Sperrklinkenwelle (12) aufweist, deren eines Ende in die erste Sperrklinke (11) eingesteckt und an dieser befestigt ist; der L2-polige Schutzschalter (2) ferner eine zweite Sperrklinkenwelle (22) aufweist, deren eines Ende in die zweite Sperrklinke (21) eingesteckt und an dieser befestigt ist; ein anderes Ende der ersten Sperrklinkenwelle (12) in die zweite Sperrklinke (21) eingesteckt ist; und ein anderes Ende der zweiten Sperrklinkenwelle (22) in die dritte Sperrklinke (31) eingesteckt ist, so dass, wenn sich die dritte Sperrklinke (31) bewegt, die zweite Sperrklinke (21) verbunden wird, um sich zuerst zu bewegen, und dann die erste Sperrklinke (11) verbunden wird, um sich durch die zweite Sperrklinke (21) zu bewegen.
  8. Schutzschalter nach Anspruch 7, dadurch gekennzeichnet, dass: der L3-polige Schutzschalter (3) ferner eine dritte Sperrklinkenwelle (32) umfasst, deren eines Ende auf die dritte Sperrklinke (31) gesteckt und als Sperrklinkenwelle (32) daran befestigt ist; die Fernauslösesteuerung (5) ein Nebenschlussauslöser ist, der eine Nebenschlussschubstange (51) für den Antrieb der Öffnung umfasst; sich die dritte Sperrklinkenwelle (32) durch die Buchse (411) an der N-poligen Sperrklinke (41) in den Nebenschlussauslöser erstreckt und unter Druck der Nebenschlussschubstange (51) wirkt.
  9. Schutzschalter nach Anspruch 8, dadurch gekennzeichnet, dass ein Ende der ersten Sperrklinkenwelle (12), der zweiten Sperrklinkenwelle (22) und der dritten Sperrklinkenwelle (32) zum Zusammenstecken und zur Befestigung gerändelt ist.
  10. Schutzschalter nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass: ein beweglicher Kontakt (44) des N-poligen Schutzschalters (4) und ein beweglicher Kontakt (14, 24, 34) des L-poligen Schutzschalters (1, 2, 3) in einer Anordnungsrichtung des Schutzschalters zusammenfallen, und ein statischer Kontakt (43) des N-poligen Schutzschalters (4) weiter vorne angeordnet ist als ein statischer Kontakt (13, 23, 33) des L-poligen Schutzschalters (1, 2, 3), sodass ein Abstand zwischen dem beweglichen Kontakt (44) und dem statischen Kontakt (43) in dem N-poligen Schutzschalter (4, 7) kleiner ist als ein Abstand zwischen dem beweglichen Kontakt (14, 24, 34) und dem statischen Kontakt (13, 23, 33) in dem L-poligen Schutzschalter (1, 2, 3).
EP22188427.3A 2021-08-03 2022-08-03 Schutzschalter Active EP4131308B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110883737.2A CN113506711A (zh) 2021-08-03 2021-08-03 一种断路器

Publications (2)

Publication Number Publication Date
EP4131308A1 EP4131308A1 (de) 2023-02-08
EP4131308B1 true EP4131308B1 (de) 2023-11-29

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