| 摘要 |
A circuit breaker according to the present invention includes a terminal switching unit mounted in an enclosure thereof, and the terminal switching unit accommodates, in a base as an outer casing thereof, a fixed contactor and a movable contactor contactable with and separated from each other, a sliding unit rotatably supporting the movable contactor, and a detection mechanism to detect a fault current. Radiators are provided at side portions of at least one of a contact portion where the movable contactor comes in contact with the fixed contactor, the sliding unit and the detection mechanism, each radiator radiating heat to the outside of the base. This may prevent an increase in temperature of the circuit breaker within a limited space without an increase in costs. |
| 主权项 |
1. A circuit breaker comprising:
an enclosure thereof; and a terminal switching unit mounted in the enclosure, wherein the terminal switching unit accommodates, in a base as an outer casing thereof: a fixed contactor fixed thereto; a movable contactor contactable with and separated from the fixed contactor; a sliding unit rotatably supporting the movable contactor; and a detection mechanism to detect a fault current, wherein radiators are provided at side portions of at least one of a contact portion where the movable contactor comes in contact with the fixed contactor, the sliding unit and the detection mechanism, each radiator radiating heat to the outside of the base. |
