JPH01134349U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a partially enlarged vertical sectional view showing one embodiment of this invention, Fig. 2 is the same view as Fig. 1 showing the repulsion state,
Figure 3 is a sectional view taken along the line in Figure 1, Figure 4 is a longitudinal side view of the conventional device, Figure 5 is an enlarged view of the main part of Figure 4 showing the on state, and Figure 6 is the off state. 7 is the same as FIG. 5 showing the trip state, FIG. 8 is the same as FIG. 5 showing the repulsion state, and FIG. 9 is the same as FIG. FIG. In the figure, 4 is an automatic tripping device, 7 is a mover, 8 is a shunt, 10 is a contact arm, 10
a is a first contact arm, 10b is a second contact arm, 20 is an opening/closing mechanism, 20b is an upper link, and 20c is a lower link. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Scope of claim for utility model registration] Regardless of the interruption operation by the automatic tripping device,
A circuit breaker that performs current limiting by separating a movable element by electromagnetic repulsion due to the application of a large current, the contact arm holding the movable element being rotatably supported by each other; a first contact arm; an opening/closing mechanism is connected to the first contact arm, the movable element is supported by the second contact arm, and the opening/closing mechanism includes an upper link, a lower link, etc. and the lower link is connected to the first contact arm, and the movable element is connected to the automatic tripping device side by a shunt, wherein the lower link is long in a forked shape, and the lower link is long in the form of a fork, A circuit breaker characterized in that the shunt is disposed in the circuit breaker.