Arc extinguishing device for circuit breaker for wiring
An arc extinguishing device and circuit breaker technology, which is applied to circuit breaker parts, emergency protection devices, circuits, etc., can solve the problems of increasing pressure, discharge, and aggravation of discharge defects, so as to improve arc extinguishing performance and improve discharge performance. , the effect of improving the stretching ability
Active Publication Date: 2022-03-25
LSIS CO LTD
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Problems solved by technology
[0013] And, except for the upper grid, the inclination angle of the grid 7 will not directly face the exhaust port 8a, therefore, as image 3 As shown, most of the arc gas passing between the grids 7 collides with the side wall of the base assembly case 8 and returns, and thus tends to be unable to be smoothly discharged to the exhaust port 8a.
In the case where the base assembly case 8 is compactly formed, the above-mentioned poor discharge phenomenon is aggravated, and dust remains inside the base assembly case 8, or the pressure increases
Method used
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[0059] Hereinafter, the preferred embodiments of the present invention will be described with reference to the accompanying drawings. This description is intended to enable those skilled in the art to which the present invention pertains to easily implement the present invention, and thus does not limit the technical idea and the present invention. category.
[0060] The arc extinguishing device of the circuit breaker for wiring according to each embodiment of the present invention will be described in detail with reference to the accompanying drawings.
[0061] Figure 4 It is an internal structure diagram of the circuit breaker for wiring according to an aspect of the present invention, Figure 5 and Image 6 Yes Figure 4 Diagram of the internal structure of the base assembly in . Indicates the energized state (closed circuit state) and the disconnected state (open state), respectively.
[0062] The arc extinguishing device of the circuit breaker for wiring according t...
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The present invention relates to a circuit breaker for wiring, and more specifically, to an arc extinguishing device for a circuit breaker for wiring. An arc extinguishing device for a circuit breaker for distribution according to an embodiment of the present invention includes: a fixed contact fixedly arranged on a part of the housing of the base assembly; a movable contact contacting or separating from the fixed contact; and an arc extinguishing part , extinguishing an arc generated when the movable contact is separated from the fixed contact, the arc extinguishing portion includes: a pair of side plates disposed on the base assembly housing; and a plurality of grids , arranged at a predetermined interval between the pair of side plates, the grid includes: a first grid, with a first cutout formed on the first side where the arc is generated; a second grid, at the side where the arc is generated The second side is formed with a second cutout portion having a different depth from the first cutout portion.
Description
technical field [0001] The present invention relates to a circuit breaker for wiring, and more specifically, to an arc extinguishing device of the circuit breaker for wiring. Background technique [0002] Generally, a circuit breaker for wiring (MCCB: Molded Case Circuit Breaker) is an electrical device that protects a circuit and a load by automatically cutting off the circuit in the event of an electrical overload state or a short-circuit fault. [0003] The circuit breaker for wiring is roughly composed of a terminal part, a contact part, an opening and closing mechanism, a trip part, an arc suppression part, etc. The terminal part can be connected to a power source or a load, and the contact part includes a fixed contact and a The fixed contact contacts or separates the movable contact to connect or separate the circuit, the opening and closing mechanism provides the power required to open and close the circuit by moving the movable contact, and the trip part detects the...
Claims
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IPC IPC(8): H01H9/34H01H73/18
CPCH01H9/34H01H73/18H01H9/362H01H2009/365H01H9/443H01H9/342H01H71/0207H01H71/2472
Inventor 任正宰吴基焕
Owner LSIS CO LTD