Patent Number: 9,431,184

Title: Circuit breaker

Abstract: A vacuum interrupter includes a fixed contact and a movable contact; a driving unit including a main shaft and a plurality of links interlocked with the main shaft, to supply a driving force to open and close the vacuum interrupter; a power transmission unit to transmit a driving force of the driving unit to the movable contact; an over-current relay to detect a fault current and to output a trip signal to break a large-scaled current conduction; a trip unit to generate and transmit a mechanical operation force to the driving unit when a trip signal is output from the over-current relay; and a Thomson drive including a Thomson coil and a repulsive plate, to rotate the main shaft to an opening position or to transmit the trip signal to the trip unit, to promptly breaking a fault current.

Inventors: Lee; Hyun Wook (Cheongju-si, KR), Jeong; Young Woo (Cheongju-si, KR), Park; Jin Hyun (Seoul, KR)

Assignee: LSIS CO., LTD.

International Classification: H01H 33/66 (20060101); H01H 33/40 (20060101); H01H 3/28 (20060101); H01H 3/22 (20060101); H01H 3/32 (20060101); H01H 33/666 (20060101)

Expiration Date: 2020-08-30 0:00:00