公开(公告)号：US11804698B2

公开(公告)日：2023-10-31

申请号：US17756943

申请日：2020-04-01

Applicant: LS ELECTRIC CO., LTD.

Inventor： Han-Joo Lee ,  Hong-Ik Yang

IPC: H02B11/24 ,  H02B1/14

CPC classification number: H02B1/14 ,  H02B11/24

Abstract: A switchboard is provided having a rotating shutter structure that comprises: a switchboard body that is provided with a circuit breaker chamber into which a circuit breaker is inserted, and an open hole formed in the rear surface to expose a conductor part of a bushing assembly to the circuit breaker chamber; a shutter part that is rotatably installed in the switchboard body and opens/closes the open hole by rotating; and an operation unit that is installed in the switchboard body and rotates the shutter part when the circuit breaker is inserted into the circuit breaker chamber.

公开(公告)号：US12087534B2

公开(公告)日：2024-09-10

申请号：US17755954

申请日：2020-03-27

Applicant: LS ELECTRIC CO., LTD.

Inventor： Hong-Ik Yang

IPC: H01H71/10 ,  H01H71/02

CPC classification number: H01H71/10 ,  H01H71/02 ,  H01H2235/00

Abstract: The present disclosure relates to a circuit breaker comprising: a circuit breaking part in which contact points of a fixed contact and a movable contact are in contact with each other; and an energy accumulation part for accumulating energy of a closing spring for controlling contact between the fixed contact and the movable contact, wherein the energy accumulation part comprises: an electromotive energy accumulation part; and a manual energy accumulation part separated from the electromotive energy accumulation part by a manual energy accumulation spring, and engaged with the electromotive energy accumulation part by unit of external pressure so as to transmit an inputted rotational force to the electromotive energy accumulation part, thereby accumulating the energy of the closing spring.