Arc blocking parts and medium and low voltage electrical appliances
A technology for low-voltage electrical appliances and arc isolation, which is applied to circuits, electrical switches, electrical components, etc., and can solve problems such as burnt parts
Active Publication Date: 2017-08-04
SIEMENS AG
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Problems solved by technology
Since there may be an arc flowing out of the molded case circuit breaker 70, as shown by the dotted arrow, the arc is likely to enter the residual current protector 60 along the gap 63 between the busbar 62 and the housing 64, and the residual current protector may be burned. Components in 60, such as the circuit board 65 in the figure
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[0038] In order to have a clearer understanding of the technical features, purposes and effects of the invention, the specific embodiments of the present invention are now described with reference to the accompanying drawings, in which the same reference numerals represent components with the same or similar structures but the same functions.
[0039] In this article, "schematic" means "serving as an example, example or illustration", and any illustration or implementation described as "schematic" should not be interpreted as a more preferred or more advantageous Technical solutions.
[0040] In order to make the drawing concise, each drawing only schematically shows the parts related to the present invention, and they do not represent the actual structure of the product. In addition, in order to make the drawings concise and easy to understand, in some drawings, only one of the components having the same structure or function is schematically shown, or only one of them is mar...
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The invention discloses an arc insulating piece. The arc insulating piece can be connected to a busbar (22), a gap allowing arcs to pass through is formed between the busbar and a shell body (24), and the arc insulating piece comprises a fixed plate (12), a connection portion (14) and an arc insulating plate (16). The fixed plate is provided with a fixed face (124) facing the busbar and an arc insulating face (126) with the back facing the busbar. The connection portion is arranged on the fixed face, and the fixed plate is capable of being connected to the busbar through the connection portion to enable the fixed face to be tightly attached to the surface of the busbar. The arc insulating plate is arranged on the arc insulating face in a protruding mode to stop the arcs from passing through the gap. The arc insulating piece is simple in structure and is capable of stopping the arcs from entering through the gap between the busbar and the shell body effectively.
Description
technical field [0001] The invention relates to an arc breaker. The present invention also relates to a medium and low voltage electrical appliance with the above-mentioned arc breaker. Background technique [0002] In the field of medium and low voltage electrical appliances, especially in medium and low voltage line protection products, the splicing between products is realized through the busbar (busbar). For example, when splicing residual current protectors and molded case circuit breakers, such as figure 1 As shown, the bus bar 62 of the residual current protector 60 extends out of the housing 64 of the residual current protector 60 to realize the splicing with the molded case circuit breaker 70. In order to meet the floating of the bus bar 62 within the tolerance range, the bus bar 62 and the housing 64 There needs to be a gap 63 in between. Since there may be an arc flowing out of the molded case circuit breaker 70, as shown by the dotted arrow, the arc is likely t...
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IPC IPC(8): H01H9/34
CPCH01H9/346H01H2009/347
Inventor 员佳丽胡长春严寒义
Owner SIEMENS AG