A small circuit breaker
A technology for small circuit breakers and shells, which is applied to parts and components of circuit breakers. It can solve the problems of reduced short-circuit breaking capacity, limiting the rising speed of arc voltage, and long movement time, so as to improve the rising speed of arc voltage and strengthen the arc blowing magnetic field. , the effect of simple structure
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[0038] as attached figure 1 As shown, a small circuit breaker includes a housing 1, an operating mechanism 2, a contact system 3, an arc extinguishing chamber 4, a thermal tripping system 5, a sealing system 6 and an electromagnetic tripping system 7. The contact system 3 includes a moving contact 301, characterized in that: the sealing system 6 includes a first housing rib 601, a second housing rib 602 and a seal 603, the thermal tripping system 5 includes a bimetal 501, an electromagnetic tripping The buckle system 7 is located above the arc extinguishing chamber 4, the contact system 3 is located on the right side of the arc extinguishing chamber 4, the operating mechanism 2 is located on the right side of the electromagnetic tripping system 7 and the arc extinguishing chamber 4, and the arc striker 8 is located below the arc extinguishing chamber 4. One end extends into the abdomen of the arc extinguishing chamber 4, and the other end is connected with the bimetallic strip...
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