Intelligent miniature circuit breaker arc extinguishing device
A technology of miniature circuit breaker and arc extinguishing device, applied in circuit breaker parts, circuit breaker contacts, etc., can solve problems such as damage to circuits and electronic components, poor sealing effect, etc., to improve breaking capacity and facilitate arc extinguishing , to avoid damage to the circuit and the effect of electronic components
Pending Publication Date: 2021-12-21
GUIZHOU TAIYONG CHANGZHENG TECH CO LTD
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Abstract
The invention provides an intelligent miniature circuit breaker arc extinguishing device which comprises an arc extinguishing mechanism, and the arc extinguishing mechanism comprises an arc extinguishing chamber, a movable arc striking sheet and a static arc striking sheet. The arc extinguishing mechanism is covered with the arc extinguishing cover with the closed periphery so that the air pressure of the arc extinguishing chamber is increased, pressure difference is formed between the arc extinguishing chamber and the outside, and airflow is smoothly exhausted from the exhaust port. Two ends of the arc extinguishing cover are respectively provided with an air inlet and an air outlet; the air inlet faces an area between the moving contact assembly and the static contact assembly; and the exhaust port faces an area between the two groups of wire inlet terminals. The independent arc extinguishing cover is additionally arranged outside the arc extinguishing mechanism so that electric arcs can be effectively isolated from a circuit board and electronic elements, the electric arcs are prevented from damaging the circuit and the electronic elements, a relative high voltage can be rapidly formed in the arc extinguishing chamber, the gas in the arc extinguishing chamber can be rapidly exhausted, and arc extinguishing is facilitated; meanwhile, the arc striking sheet is an arc-shaped structure so that the arc is easy to move into the arc extinguishing chamber, and the breaking capacity is improved.
Application Domain
Circuit-breaking switch contacts
Technology Topic
Electric arcStructural engineering +3
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