A circuit breaker that is conducive to the rapid movement and elongation of the arc
A fast-moving, circuit-breaker technology, applied in the direction of circuit breaker components, circuits, circuit breaker contacts, etc., can solve the problems of not being obvious enough, high power consumption, complex structure, etc., to reduce the number of breakpoints, reduce power consumption, The effect of simple structure
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Embodiment 1
[0040] Such as figure 1 , figure 2 , Figure 4 As shown, the circuit breaker involved in the present invention includes a static contact 1, an arc extinguishing chamber 2, and a first moving contact 3. Among them: the arc extinguishing chamber 2 is arranged on the left side of the first movable contact 3, the arc striking grid 24 at the bottom of the arc extinguishing chamber 2 is arranged lower than the static contact electrical contact 13, and the arc striking grid 22 at the top of the arc extinguishing chamber 2 Set higher than the maximum position of the moving contact electrical contact 32 when the first moving contact 3 is opened, the angle a between the contact surface of the static contact electrical contact 13 and the moving contact electrical contact 32 and the base bottom plane 4 With an acute angle and located in the first quadrant, the distance between the contact surface 33 of the moving contact electrical contact 32 and the static contact electrical contact 13 p...
Embodiment 2
[0046] The difference from the first embodiment is that the static contact can also adopt other methods.
[0047] Such as Picture 10 The arrangement of the static contact, the electrical contact 13 of the static contact and the arc-striking part 12 is the same as that of the first embodiment. The wiring part plane 111 of the conductive base of the static contact is parallel to the bottom plane 4 of the base. The static contact The contact surface of the electrical contact 13 and the electrical contact of the moving contact is 28° with respect to the wiring part plane 111 of the conductive base of the static contact and extends from 115 below the wiring part of the conductive base of the static contact to the direction of the moving contact. The part where the upper welding electrical contact and the fixed arc-starting part are fixed is formed by bending the connecting surface 115 under the conductive base wiring part toward the moving contact side.
Embodiment 3
[0049] The difference from the first and second embodiments above is that the moving contacts connected in parallel with the moving contacts are arranged on both sides of the moving contact.
[0050] Such as Picture 11 As shown, the static contact 1 is the same as the embodiment 2, and the arrangement of the first moving contact 3 is the same as that of the embodiment 1. The difference is that two moving contacts are provided on both sides of the first moving contact 3. The second movable contact 301 and the third movable contact 302 of the contact 3 are connected in parallel to improve the rated current-carrying capacity. The second and third movable contacts 301 and 302 are arranged outside the arc extinguishing chamber. Of course, the second and third movable contacts The number of contacts 301 and 302 can be increased or decreased correspondingly according to the rated operating current of the circuit breaker. Further, the second and third moving contacts 301 and 302 can be ...
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