Miniature circuit breaker with ultra-high short circuit breaking capacity
A technology of small circuit breakers and breaking capacity, applied in circuit breaker parts, circuit breaker contacts, electromagnetic release switches, etc. The effect of breaking capacity
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[0031] Implementation method: match the groove on the arc striker 1705 with the boss on the moving lug and weld them with resistance welding, and then weld the bimetallic sheet 1702 to form Figure 7 , is equal to adding a turn of the arc blowing coil between the arc strikers 1705 to increase the arc blowing and magnetic field strength of the product, and at the same time increase the resistance of the arc striker 1705. When the miniature circuit breaker is under the action of short-circuit current, the dynamic When the contact 7 is completely disconnected, the arc current transmitted by the moving contact 7 to the arc striker 1705 is a fixed value, according to Ohm's law: I=U / R; when increasing the resistance on the arc striker 1705, the corresponding decrease The arc voltage can effectively improve the current limiting capacity of the product, and effectively improve the rated short-circuit breaking capacity of the miniature circuit breaker.
[0032] When in use, in the norm...
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