Circuit breaker device

Abstract

A circuit breaker device disclosed by the present invention comprises a contact structure, an operation structure and an electromagnetic tripping mechanism which are arranged in a shell, the electromagnetic tripping mechanism and the contact structure are arranged in the shell along a first direction, and the electromagnetic tripping mechanism is provided with a driving structure which drives the operation structure to be in a tripping motion state when being triggered and a push rod which is movably arranged between the driving structure and a moving contact component; when the electromagnetic tripping mechanism with the structural design drives the moving contact component to be separated from a static contact, the operation structure is subjected to opening and tripping movement, so that the operation structure drives the moving contact component to move to an opening position in a tripping state, the opening and tripping speed of the circuit breaker is improved under the combined action of the moving contact component and the static contact, the tripping time is shortened, the instant breaking of the moving contact and the static contact is beneficial to the rapid extinguishing of the arc, the contact structure is protected, the short circuit breaking capacity of the circuit breaker is improved, and the electrical life of the circuit breaker is prolonged.

Description

technical field [0001] The invention relates to the technical field of low-voltage electrical appliances, in particular to a circuit breaker device. Background technique [0002] The miniature circuit breaker is used in the power distribution system to connect or interrupt the load and protection circuit and the low-voltage protection device of the equipment. It not only has the function of manual switch, but also can automatically perform the functions of voltage loss, undervoltage, overload, and short circuit protection, so that it can be used to distribute electric energy, start asynchronous motors infrequently, and protect power lines and motors. It can automatically cut off the circuit in case of serious overload or short circuit and undervoltage faults. [0003] The traditional miniature circuit breaker is generally composed of electromagnetic tripping system, thermal tripping system, arc extinguishing system, operating tripping mechanism and contact system. The elect...

AI Technical Summary

Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the problem that the tripping speed of the electromagnetic tripping mechanism of the circuit breaker in the prior art is not fast enough, which is not conducive to the rapid extinguishment of the arc, thereby affecting the short-circuit breaking capacity and electrical life of the circuit breaker, thereby Provide a circuit breaker device with fast tripping speed, shortened arc extinguishing time, and improved short-circuit breaking capacity and electrical life of the product

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