Circuit breaker

摘要

Disclosed is a circuit breaker. The circuit breaker includes an arc exhaust port for exhausting an arc generated in the inner box; an outer box receiving the inner box and including an arc passage for exhausting the arc from the exhaust port to an outside; and an arc guide part for guiding the arc from the arc exhaust port into the arc passage, wherein the arc guide part includes: an upper guide; a lower guide spaced apart from the upper guide; and a connecting part connecting the upper and lower guides to each other in a longitudinal direction.

主权项

1. A circuit breaker comprising:
an inner box including an arc exhaust port for exhausting an arc generated in the inner box; an outer box receiving the inner box and including an arc passage for exhausting the arc from the exhaust port to an exterior; and an arc guide part for guiding the arc from the arc exhaust port into the arc passage; wherein the arc guide part comprises:
an upper guide;a lower guide spaced apart from the upper guide;a connecting part connecting the upper and lower guides to each other in a longitudinal direction;a first guide protrusion and a second guide protrusion formed on the lower guide;a guide groove formed on the upper guide; andat least one partition part formed on the lower guide, wherein a first partition part of the at least one partition part is disposed between the first and second guide protrusions and protrudes from the lower guide at a predetermined height such that the arc exhausted from the arc exhaust port is partitioned.