An arc extinguishing short

Abstract

The invention discloses an arc-extinguishing short connector, which comprises a housing, a switch cover, movable electrode and a closing switch, wherein the switch cover is buckled on the upper part of the housing, the movable electrode is arranged inside the housing, and the closing switch is arranged on the side wall of the housing. The invention performs on arc extinguishing treatment from twoperspectives. First, a structure with instantaneous contact of a moving contact and a static contact is designed, the moving contact can quickly move through matching the movable electrode with a spring at one end and the closing switch and a separating switch at one side so as to realize the contact with the fixed contact, thereby reducing the amount of generated arc from the arc generation source; and second, the arc extinguishing treatment is carried out in the arc propagation process, the switch cover is additionally provided with arc-extinguishing grid pieces, and the arc-extinguishing grid pieces cover the moving contact and the static contact when the switch cover is buckled on the upper part of the housing, thereby achieving arc extinguishing in the arc propagation process.

Description

technical field [0001] The invention relates to a short connector, in particular to an arc extinguishing short connector, which belongs to the field of electrical technology. Background technique [0002] A low-voltage circuit breaker is a switching device that can not only switch on and off normal load current and overload current, but also switch on and off short-circuit current. In addition to the control function in the circuit, the low-voltage circuit breaker also has certain protection functions, such as overload, short circuit, undervoltage and leakage protection. At present, low-voltage circuit breakers are widely used in my country's low-voltage distribution network from the power distribution substation to the customer-side electric meter. [0003] The application of low-voltage circuit breakers mainly has the following characteristics. First, low-voltage switches are used in the largest number of molded case circuit breakers, with thousands of types. However, the...

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Problems solved by technology

[0004] The short wiring in the prior art is composed of adding clips and clips at both ends of a wire. It is only used for short-circuiting of DC circuits, and does not realize short-circuiting of low-voltage lines in low-voltage AC circuits and battery circuits. And when the battery or the live line is short-circuited, an arc will appear, and high temperature will be generated, which will harm the safety of the user; and if you are not careful during operation, you will be injured by a strong current arc, even if you do not hurt yourself, you may It may burn the pile head at the short-circuit point, even to the point of damage; what's more, when using ordinary short-circuit wires to short-circuit a single battery, ordinary operators are afraid and dare not short-circuit. This will lead to the time of troubleshooting, which may expand the scope of the fault, and cannot achieve the effect of arc extinguishing and safe short-circuiting.

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