CN216818132U - Electric switch - Google Patents

Abstract

Embodiments of the present disclosure provide an electrical switch. The electrical switch includes: the contact of the moving contact can move in a preset area to be contacted with and separated from the contact of the fixed contact; an arc chute blade assembly disposed adjacent to the predetermined region and including first and second blade regions located at different positions in a first direction, the predetermined region being disposed corresponding to the first blade region in a second direction intersecting the first direction such that the first blade region receives gas and an arc from the predetermined region in the second direction; and a first blocking member disposed adjacent to the first gate sheet region on a side of the first gate sheet region opposite to the predetermined region to move the gas and the arc passing through the first gate sheet region toward the second gate sheet region. With the solution of the present disclosure, it is possible to lengthen the arc path in the electrical switch and thus to improve the reliability of extinguishing the arc.

Description

Electrical switch

Technical Field

The present disclosure relates to the field of electrical equipment technology, and more particularly, to an electrical switch.

Background

In electrical switches, such as circuit breakers, contactors, arc extinguishing systems are commonly provided for extinguishing arcs generated during current breaking. For example, during the breaking operation of the electrical switch on the fault circuit, the arc generated by the breaking can be moved rapidly in the arc channel and enter the arc extinguishing chamber by using the air blowing structure, and then the grid piece in the arc extinguishing chamber can divide the long arc into a plurality of short arcs so that the arc is finally extinguished.

The existing arc extinguishing schemes still have more defects. For example, when breaking a dc fault circuit with an existing circuit breaker, it is often difficult for the arc chute within the circuit breaker to maintain a high arc voltage, resulting in the dc arc not being effectively extinguished, which may cause the breaking operation to fail and thus the fault not to be eliminated.

SUMMERY OF THE UTILITY MODEL

To at least partially address the above and other potential problems, embodiments of the present disclosure provide an improved electrical switch.

According to an aspect of the present disclosure, an electrical switch is provided. The electrical switch includes: the contact of the moving contact can move in a preset area to be contacted with and separated from the contact of the fixed contact; an arc chute plate assembly disposed adjacent to the predetermined region and including a first chute plate region and a second chute plate region located at different positions in the first direction, the predetermined region being disposed corresponding to the first chute plate region in a second direction intersecting the first direction such that the first chute plate region receives gas and an arc from the predetermined region in the second direction; and a first blocking member disposed adjacent to the first gate sheet region on a side of the first gate sheet region opposite to the predetermined region to move the gas and the arc passing through the first gate sheet region toward the second gate sheet region.

By providing the first barrier, the gas and the arc can be forced to continue to move towards the previously unutilized grid area, which improves the utilization of the arc chute and increases the arc path, thereby facilitating the extinction of the arc.

In certain embodiments of the present disclosure, the electrical switch further comprises: a housing having a cavity formed at an inner side thereof, the cavity including a predetermined region and accommodating the arc chute blade assembly, and the housing including a first blocking member. In this way, a relatively closed arc chute may be formed to ensure that the gas flow and the arc follow a predetermined path to enhance arc extinguishing efficiency.

In certain embodiments of the present disclosure, the electrical switch further comprises: and the second barrier piece is arranged on one side of the first grid area, which is opposite to the second grid area, and is close to the first grid area. In this way, the gas flow and the arc passing through the first grid section can be further restricted to continue moving towards the second grid section, thereby improving the arc extinguishing effect.

In certain embodiments of the present disclosure, the second barrier is disposed between the stationary contact and the first barrier, and is configured to seal a gap between the stationary contact and the first barrier. By the mode, the moving direction of the electric arc and the air flow can be further limited, and the arc extinguishing effect is favorably improved.

In certain embodiments of the present disclosure, the electrical switch further comprises: and the third barrier is arranged on one side of the predetermined area, which is opposite to the first grid plate area, and is adjacent to the predetermined area. By this embodiment, the gas flow and the arc in the predetermined area can be limited to move only in the direction of the arc chute blade assembly.

In certain embodiments of the present disclosure, the electrical switch further comprises: and the elastic component presses the third blocking piece against the movable contact along the first direction, so that the third blocking piece is positioned on the side, opposite to the first grid plate area, of the predetermined area adjacent to the predetermined area when the contact of the movable contact moves to a position separated from the contact of the fixed contact. With this embodiment, it is possible to dispose the third blocking member at a position to restrict the air flow and the arc in a predetermined area only when the contact points of the movable and stationary contacts are separated and the arc is generated.

In certain embodiments of the present disclosure, the electrical switch further comprises: a gas generating component disposed adjacent to the predetermined area and configured to generate gas under the action of the arc. In this embodiment, the arc may be driven faster and more efficiently by means of the gas generated by the gas generating means to ensure that the arc moves along a particular gas flow path.

In certain embodiments of the present disclosure, the gas-generating component includes at least two baffles spaced apart in the second direction with a gradually increasing spacing, the predetermined area being located between the at least two baffles. In this way, the high-temperature expanding gas and the arc can be better guided to move towards the arc extinguishing grid plate assembly, and the arc extinguishing efficiency is further improved.

In certain embodiments of the present disclosure, the electrical switch further comprises: an outlet portion disposed adjacent the second grid area and configured to exhaust gas passing through the arc chute assembly from the cavity of the housing. In this way, residual gas can be discharged and a zigzag-shaped meandering gas flow channel is formed which is advantageous for arc extinction.

In certain embodiments of the present disclosure, the electrical switch further comprises: a filter disposed in the outlet portion and including a plurality of holes. In this way, charged metal particles can be filtered from the residual gas to be discharged, in order to avoid the formation of additional conductive paths during the switching off of the electrical switch.

The summary is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. The summary is not intended to identify key features or essential features of the disclosure, nor is it intended to limit the scope of the disclosure.

Drawings

The foregoing and other objects, features and advantages of the disclosure will be apparent from the following more particular descriptions of exemplary embodiments of the disclosure as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the disclosure.

Fig. 1 illustrates a perspective view of an electrical switch according to an embodiment of the present disclosure.

Fig. 2 illustrates an exploded view of an electrical switch according to an embodiment of the present disclosure.

Fig. 3 illustrates a cross-sectional view of an electrical switch according to an embodiment of the present disclosure.

Fig. 4 illustrates a partially enlarged cross-sectional view of an electrical switch according to an embodiment of the present disclosure.

Fig. 5A illustrates a perspective view of a lower component and a stationary contact of a second barrier of an electrical switch according to an embodiment of the present disclosure.

Fig. 5B illustrates a perspective view of a lower assembly of a second barrier of an electrical switch, according to an embodiment of the present disclosure.

Fig. 5C illustrates a perspective view of an upper assembly of a second barrier of an electrical switch, according to an embodiment of the present disclosure.

Fig. 6A illustrates a perspective view of a movable contact of an electrical switch according to an embodiment of the present disclosure.

Fig. 6B illustrates a perspective view of a third barrier of an electrical switch, according to an embodiment of the present disclosure.

Fig. 6C illustrates a perspective view of an elastic member of an electrical switch according to an embodiment of the present disclosure.

Fig. 7A illustrates a perspective view of a gas-generating component of an electrical switch, according to an embodiment of the present disclosure.

Fig. 7B illustrates a front view of a gas generating component of an electrical switch, according to an embodiment of the present disclosure.

Detailed Description

Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Alternative embodiments will become apparent to those skilled in the art from the following description without departing from the spirit and scope of the disclosure.

The term "include" and variations thereof as used herein is meant to be inclusive in an open-ended manner, i.e., "including but not limited to". The term "or" means "and/or" unless specifically stated otherwise. The term "based on" means "based at least in part on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment". Other explicit and implicit definitions are also possible below.

In an embodiment of the present disclosure, an electrical switch is presented that employs an improved arc quenching scheme. Through set up the electric arc passageway of zigzag type in this electrical switch, can effectively prolong the electric arc route to increase the utilization ratio of arc extinguishing bars piece in the explosion chamber, thereby promote electric arc voltage and in order to reach the purpose of effectively extinguishing electric arc fast.

Fig. 1 illustrates a perspective view of an electrical switch 1000 according to an embodiment of the present disclosure. Merely by way of example, the electrical switch 1000 may be a low-voltage direct-current and/or alternating-current molded case circuit breaker, which may be connected in series in an electric power line to perform on and off operations in an automatic or manual manner, as required, or to break a fault circuit in the event of a fault. It is understood that the electrical switch 1000 may also be other types of electrical switching devices, such as contactors, and may be other suitable voltage class electrical switching devices.

Fig. 2 shows an exploded view of an electrical switch 1000 according to an embodiment of the present disclosure, fig. 3 shows a cross-sectional view of the electrical switch 1000 according to an embodiment of the present disclosure, and fig. 4 shows a partially enlarged view in a dashed box of fig. 3. The electrical switch 1000 will be described in detail below with reference to fig. 2, 3, and 4.

According to an embodiment of the present disclosure, the electrical switch 1000 includes a movable contact 1100 and a stationary contact 1200, and a contact 1101 of the movable contact 1100 is movable within a predetermined area PA to be in contact with and separated from a contact 1201 of the stationary contact 1200. As an example, the movable contact 1100 may be rotated about a fulcrum by an actuating mechanism such as a motor, whereby the electrical switch 1000 may perform a turn-on operation when the contact 1101 of the movable contact 1100 is in contact with the contact 1201 of the stationary contact 1200, and the electrical switch 1000 may perform a turn-off operation when the contact 1101 of the movable contact 1100 is separated from the contact 1201 of the stationary contact 1200 and an arc is extinguished. The moving area of the contact 1101 of the movable contact 1100 in the on operation and the off operation is shown in fig. 4 by an oval dashed box PA. In the case where the contact 1101 of the movable contact 1100 is separated from the contact 1201 of the stationary contact 1200, an arc may be generated in a predetermined area PA between the contact 1101 and the contact 1201, thereby forming a conductive path between the movable contact 1100 and the stationary contact 1200, which is disadvantageous for the breaking operation.

According to an embodiment of the present disclosure, the electrical switch 1000 includes an arc chute assembly 1300, the arc chute assembly 1300 being disposed adjacent to the predetermined area PA, and including a first chute area 1310 and a second chute area 1320 located at different positions in the first direction D1, the predetermined area PA being disposed corresponding to the first chute area 1310 in the second direction D2 intersecting the first direction D1 such that the first chute area 1310 receives gas and arc from the predetermined area PA in the second direction D2. As an example, the arc chute assembly 1300 may include a plurality of chutes. The grids may be made of metal, for example, and may be fixed between two mounting plates such that the grids are sequentially arranged along the first direction D1 and spaced apart from each other by a certain distance. These grid pieces may be formed in a generally sector-like shape as a whole, for example, to surround the area PA where arcing may occur. When an arc is generated at the predetermined area PA, the high temperature of the arc may expand the air or gas at the predetermined area PA to generate a gas flow that drives the arc to move, whereby the arc will move along the path of the gas flow into the arc chute assembly 1300 in order to extinguish the arc by means of the arc chute assembly 1300. Since the arc chute plate assembly 1300 extends a long distance in the first direction D1 as a whole, only a partial area, for example, the first plate area 1310, directly faces the predetermined area PA and receives the gas flow and the arc from the predetermined area PA during the arc extinguishing operation, and a partial area, for example, the second plate area 1320, does not directly receive the gas flow and the arc from the predetermined area PA in the arc chute plate assembly 1300.

According to an embodiment of the present disclosure, the electrical switch 1000 may further include a first blocking member 1410, the first blocking member 1410 being disposed adjacent to the first gate 1310 on a side of the first gate 1310 opposite to the predetermined area PA, so that the gas and the arc passing through the first gate 1310 move toward the second gate 1320. As an example, the first barrier 1410 may block the arc and gas flow passing through the first grid 1310 from continuing to travel in the second direction D2 such that the arc and gas flow changes direction without exiting the arc chute assembly 1300. The blocked arc and gas flow will be changed to travel in the first direction D1 and thus enter the second grid area 1320, which is very advantageous for increasing the arc voltage and extinguishing the arc.

In particular, in conventional electrical switches, the arc extinguishing system generally employs an arc extinguishing channel of the linear type, i.e. the arc enters and leaves the arc extinguishing chamber in a straight line. In such a straight channel, the arc moves through only a portion of the grids of the arc chute assembly facing the predetermined area PA (e.g., the grids in the first grid region 1310), and thus the arc path is short and the grids in the region such as the second grid region 1320 are underutilized. In some cases, such conventional arc extinguishing systems may fail to extinguish the arc, for example, when it is desired to break a dc fault circuit, such a straight arc chute may be difficult to maintain a sufficiently high arc voltage, resulting in failure of the dc arc to extinguish. In contrast to the conventional scheme, in the embodiment of the present disclosure, the gas and the arc that will leave the arc chute grid assembly 1300 can be forced to change direction and move toward the second grid 1320 that is not previously utilized by means of the first blocking member 1410, which significantly increases the arc path and increases the arc voltage while improving the utilization rate of the arc chute grid assembly 1300, thereby being more advantageous to extinguish the arc generated when performing a breaking operation on a circuit such as a dc fault circuit.

In some embodiments of the present disclosure, the electrical switch 1000 further includes a housing 1400, an inner side of the housing 1400 is formed with a cavity C including the predetermined area PA and accommodating the arc chute plate assembly 1300, and the housing 1400 includes a first stopper 1410. As an example, the housing 1400 may include a base and a cover that mate with each other, and a cavity C is formed between the cover and the base after the cover is mounted to the base for receiving the arc chute assembly 1300 and other related components. In addition, at least a portion of the movable contact 1100, such as the contact 1101, may move within the cavity C to contact and separate from the contact 1201 of the stationary contact 1200. In this way, a relatively closed arc-extinguishing channel can be formed to ensure that the gas flow and the arc follow a predetermined path without spreading to the surroundings, thereby improving the arc-extinguishing efficiency. Where a housing 1400 is provided, the first stop 1410 may be part of the housing 1400. However, it is understood that the first blocking piece 1410 may be a separate component from the housing 1400. Further, in some cases, a housing for closing the cavity may not be provided, and since the arc path may be extended to some extent by providing the first blocking member 1410, the arc extinguishing effect may still be improved, thereby achieving the object of the present disclosure.

In some embodiments of the present disclosure, the electrical switch 1000 further comprises a second blocking member 1500, the second blocking member 1500 being disposed adjacent to the first gate segment 1310 on a side of the first gate segment 1310 opposite the second gate segment 1320. Specifically, after the first barrier 1410 blocks the gas flow and the arc, the gas flow and the arc may move toward the second barrier 1320 in the first direction D1 and may move away from the arc chute assembly 1300 in a direction opposite to the first direction D1. The second barrier 1500 may effectively block the airflow and the arc from moving in a direction opposite to the first direction D1, thereby ensuring that all or as much as possible of the airflow and the arc move toward the second grid 1320, thereby improving arc extinguishing efficiency.

Fig. 5A illustrates a perspective view of a lower component 1510 and a stationary contact 1200 of a second barrier 1500 according to an embodiment of the disclosure, fig. 5B illustrates a perspective view of the lower component 1510 of the second barrier 1500 according to an embodiment of the disclosure, and fig. 5C illustrates a perspective view of an upper component 1520 of the second barrier 1500 according to an embodiment of the disclosure. In some embodiments of the present disclosure, the second barrier 1500 is disposed between the stationary contact 1200 and the first barrier 1410, and is configured to seal a gap between the stationary contact 1200 and the first barrier 1410. Specifically, there may be gaps between the fixed contact 1200 and the first blocking element 1410 or the housing 1400, so that the arc and the airflow may move toward the gaps and leave the arc chute assembly 1300, and by sealing the gaps, the moving direction of the arc and the airflow is further limited, which is beneficial to enhancing the arc extinguishing effect. As an example, the second barrier 1500 may include a lower component 1510 and an upper component 1520, wherein the lower component 1510 is mounted and secured on the stationary contact 1200, and the upper component 1520 may be engaged with the lower component 1520 and disposed adjacent to or against the first barrier 1410. By separately manufacturing and assembling the second resistance member 1500, the manufacturing difficulty of the second resistance member 1500 can be reduced while satisfying the installation and performance requirements.

In some embodiments of the present disclosure, the electrical switch 1000 further includes a third blocking member 1610, the third blocking member 1610 being disposed adjacent to the predetermined area PA on a side of the predetermined area PA opposite to the first gate sheet 1310. Specifically, if the airflow and the arc of the predetermined area PA move in a direction opposite to the second direction D2, the arc will not enter the arc chute assembly 1300. By providing the third barrier 1610, the gas flow and the arc of the predetermined area PA may be blocked from moving in a direction opposite to the second direction D2, which further restricts the moving direction of the gas flow and the arc. In addition, when the high temperature of the arc causes the gas to expand, the presence of the third barrier 1610 can exert a counter force, thereby helping to encourage the gas and arc to move in the direction of the arc chute blade assembly 1300.

Fig. 6A illustrates a perspective view of the movable contact 1100 according to an embodiment of the present disclosure, fig. 6B illustrates a perspective view of the third blocking member 1610 according to an embodiment of the present disclosure, and fig. 6C illustrates a perspective view of the elastic member 1620 according to an embodiment of the present disclosure. In some embodiments of the present disclosure, the electrical switch 1000 further includes a resilient member 1620, the resilient member 1620 pressing the third blocking member 1610 against the movable contact 1100 along the first direction D1, so that the third blocking member 1610 is located adjacent to the predetermined area PA on a side of the predetermined area PA opposite to the first grid section 1310 when the contact 1101 of the movable contact 1100 is moved to a position separated from the contact 1201 of the fixed contact 1200. As an example, the resilient member 1620 may include two coil springs supported between the third blocking member 1610 and the housing 1400 (e.g., a base of the housing 1400). In addition, the third blocking member 1610 may abut against the lower side of the movable contact 1100. In one embodiment, the third blocking member 1610 may also be formed with a recess for receiving the movable contact 1100, which may effectively limit the relative movement of the third blocking member 1610 and the movable contact 1100 in an undesired direction. Thus, when the contact 1101 of the movable contact 1100 is in contact with the contact 1201 of the fixed contact 1200, the third blocking member 1610 pressed by the movable contact 1100 further presses the elastic member 1620, so that the elastic member 1620 is in the energy storage state; subsequently, when the contact 1101 of the movable contact 1100 moves upward and is separated from the contact 1201 of the stationary contact 1200, the elastic component 1620 will be released and push the third blocking member 1610 to move upward together with the movable contact 1100. Thus, while the contacts of the movable and stationary contacts are separated and an arc may be generated at the predetermined area PA, the third barrier 1610 may be disposed at a position to block and restrict the air flow and the arc of the predetermined area PA.

Fig. 7A shows a perspective view of gas-generating component 1700 of electrical switch 1000 in accordance with an embodiment of the present disclosure, and fig. 7B shows a front view of gas-generating component 1700 of electrical switch 1000 in accordance with an embodiment of the present disclosure. In some embodiments of the present disclosure, the electrical switch 1000 further comprises a gas generating component 1700, the gas generating component 1700 being arranged adjacent to the predetermined area PA and configured to generate gas under the action of the arc. As an example, the gas generating part 1700 may be made of a material such as Polyoxymethylene (POM) or Polyamide (PA), whereby when the contacts of the movable and stationary contacts are separated at the predetermined region PA and an arc is generated, the high temperature caused by the arc may decompose the material constituting the gas generating part 1700 and generate an inert gas. These inert gases expand with the air under the high temperature influence of the arc and create a gas flow to drive the arc into the arc chute assembly 1300. It can be seen that more gas can drive the arc faster and more efficiently to ensure that the arc moves along a particular gas flow path.

In some embodiments of the present disclosure, the gas generating part 1700 includes at least two baffles 1710 with a spacing DS gradually increasing in the second direction D2, and the predetermined area PA is located between the at least two baffles 1710. As an example, if the gas generating member 1700 is viewed in a plan view, the interval DS between the two baffles 1710 gradually increases along the second direction D2, thereby forming an approximately V-shaped opening. In this way, the high temperature expanding gas and the arc may be better directed toward the arc chute assembly 1300 while avoiding the arc from moving in other directions, thereby further improving arc extinguishing efficiency.

In some embodiments of the present disclosure, the electrical switch 1000 further comprises an outlet portion 1800, the outlet portion 1800 being disposed adjacent to the second barrier region 1320 and configured to vent gas passing through the arc chute assembly 1300 from the cavity C of the housing 1400. As an example, the arc and gas after passing through the first barrier region 1320 of the arc chute assembly 1300 continues to move toward the second barrier region 1320 of the arc chute assembly 1300 under the restriction of the first and second barriers 1410, 1500, and finally exits the outlet portion 1800. Thus, a Z-shaped air flow channel or arc extinguishing channel can be formed in the cavity C. Clearly, this more tortuous zigzag path effectively increases the arc path and improves the utilization of the grids in the arc chute assembly 1300 as compared to conventional straight channels.

In some embodiments of the present disclosure, electrical switch 1000 further comprises a filter 1900, filter 1900 disposed in outlet portion 1800 and comprising a plurality of apertures. Specifically, charged metal particles may exist in the gas exhausted from the outlet portion 1800, and these charged metal particles may form an electrically conductive path between the movable contact 1100 and an electrical component outside the cavity C (e.g., a conductor connected to the fixed contact 1200 or a portion of the fixed contact 1200 located outside the cavity C). By providing filter 1900, these charged metal particles can be blocked and adsorbed while the airflow can still circulate through the pores of filter 1900.

In embodiments of the present disclosure, by providing a means to confine and block the airflow, a tortuous and elongated airflow or arc chute may be formed in the arc quenching system of the electrical switch, thereby increasing the utilization of the arc chute pieces and increasing the arc voltage to enhance the ability to quench the arc. The improved electrical switch is effective in extinguishing arcs, such as direct current arcs, that are difficult to handle with conventional electrical switches.

Many modifications and other embodiments of the disclosure set forth herein will come to mind to one skilled in the art to which this disclosure pertains having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. Therefore, it is to be understood that the embodiments of the disclosure are not to be limited to the specific embodiments disclosed and that modifications and other embodiments are intended to be included within the scope of the disclosure. Moreover, while the above description and the related figures describe example embodiments in the context of certain example combinations of components and/or functions, it should be appreciated that different combinations of components and/or functions may be provided by alternative embodiments without departing from the scope of the present disclosure. In this regard, for example, other combinations of components and/or functions than those explicitly described above are also contemplated as within the scope of the present disclosure. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims (10)

1. An electrical switch (1000), comprising:

a movable contact (1100) and a stationary contact (1200), a contact (1101) of the movable contact (1100) being movable within a Predetermined Area (PA) to come into and out of contact with a contact (1201) of the stationary contact (1200);

an arc chute plate assembly (1300) disposed adjacent to the Predetermined Area (PA) and including a first chute plate area (1310) and a second chute plate area (1320) located at different positions in a first direction (D1), the Predetermined Area (PA) being disposed corresponding to the first chute plate area (1310) in a second direction (D2) intersecting the first direction (D1) such that the first chute plate area (1310) receives gas and an arc from the Predetermined Area (PA) in the second direction (D2); and

a first barrier (1410) disposed adjacent to the first gate region (1310) on a side of the first gate region (1310) opposite the Predetermined Area (PA) to move the gas and the arc passing through the first gate region (1310) toward the second gate region (1320).

2. The electrical switch (1000) of claim 1, further comprising:

a housing (1400) having a cavity (C) formed at an inner side thereof, the cavity including the Predetermined Area (PA) and accommodating the arc chute assembly (1300), and the housing (1400) including the first blocking member (1410).

3. The electrical switch (1000) of claim 1 or 2, further comprising:

a second barrier (1500) disposed adjacent to the first gate region (1310) on a side of the first gate region (1310) opposite the second gate region (1320).

4. The electrical switch (1000) of claim 3, wherein the second barrier (1500) is disposed between the stationary contact (1200) and the first barrier (1410) and is configured to seal a gap between the stationary contact (1200) and the first barrier (1410).

5. The electrical switch (1000) of claim 1 or 2, further comprising:

a third blocking member (1610) disposed adjacent to the Predetermined Area (PA) on a side of the Predetermined Area (PA) opposite to the first gate region (1310).

6. The electrical switch (1000) of claim 5, further comprising:

-elastic means (1620) pressing said third stop (1610) against said movable contact (1100) along said first direction (D1) so that said third stop (1610) is located adjacent to said Predetermined Area (PA) on the opposite side of said Predetermined Area (PA) from said first grid area (1310) when the contact (1101) of said movable contact (1100) is moved to the position of separation from the contact (1201) of said stationary contact (1200).

7. The electrical switch (1000) of claim 1 or 2, further comprising:

a gas generating component (1700) arranged adjacent to the Predetermined Area (PA) and configured to generate gas under the action of the electric arc.

8. The electrical switch (1000) of claim 7, wherein the gas generating component (1700) comprises at least two baffles (1710) with gradually increasing spacing (DS) in the second direction (D2), the Predetermined Area (PA) being located between the at least two baffles (1710).

9. The electrical switch (1000) of claim 2, further comprising:

an outlet portion (1800) disposed adjacent to the second grid region (1320) and configured to exhaust gas passing through the arc chute assembly (1300) from the cavity (C) of the housing (1400).

10. The electrical switch (1000) of claim 9, further comprising:

a filter (1900) disposed in the outlet portion (1800) and including a plurality of apertures.

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