Electromagnetic short circuit protection breaker

Abstract

The invention provides an electromagnetic short circuit protection breaker, including: a breaker body, which includes a housing; a handle for realizing on-off operation is arranged outside the housing; a linkage mechanism is connected onto an end of the handle, separation and contact of the movable and static contact of the movable and static contact slices are realized by using the linkage mechanism; also including: a short circuit detection unit for short circuit fault detection, and generating a trigger signal at time of short circuit generation; an electromagnetic action mechanism for receiving the trigger signal, and separating the movable and static contacts by pushing the linkage mechanism with the electromagnetic action.

Description

technical field [0001] The invention relates to a circuit breaker, in particular to a circuit breaker that realizes short-circuit protection through electromagnetic action. Background technique [0002] For the power sector, switch-break equipment is an indispensable equipment to ensure the safety of electricity use and line switching. Please refer to figure 1 As shown, it is a schematic diagram of the internal structure of the existing circuit breaker; it includes: a box body 001, which is made of insulating and flame-retardant materials, and is provided with the following structure inside: [0003] A phase line access end 032 and a phase line output end 037 are used to connect to the power line; an action mechanism, which includes: a handle 021, which has an operating end disposed outside the box body 001 to perform On-off control of the circuit; a movable contact piece 024, the end of which has a movable contact 025; a linkage mechanism 022, which is composed of a plural...

AI Technical Summary

Problems solved by technology

[0005]When a short-circuit accident occurs, it will bring a strong current. At this time, although the over-current protection mechanism can cut off the circuit, but the short-circuit accident is not resolved Under the circumstances, because the circuit breaker has no indication of the circuit breaking action, the user is not sure whether the circuit breaker action is caused by the overload or the short circuit causes the circuit to be disconnected. Therefore, some electrical appliances are usually turned off, hoping to reduce the use of electrical appliances and achieve the goal of reducing the current. Purpose, when the user rotates the handle again to combine the dynamic and static contacts of the circuit breaker, the circuit will be connected and a large current will be generated instantaneously, which may bring danger to the user and cause damage to the electrical equipment

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