Patent ID: 11942291
Assignee: LS ELECTRIC CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. A vacuum circuit breaker comprising:
a vacuum interrupter having:
a fixed electrode fixedly disposed in an insulating container and having a fixed contact at one end thereof; and
a movable electrode having a movable contact at one end thereof, wherein the movable contact is in contact with or is removed from the fixed contact, wherein the movable electrode received in the insulating container so that the movable electrode ascends or descends;

a main circuit having a housing receiving therein the vacuum interrupter;
a push rod assembly including:
a push rod coupled to an opposite end of the movable electrode to raise up or lower down the movable electrode; and
a rod housing for accommodating therein one end of the push rod; and

a movement sensing device including:
a sensor module installed to be spaced apart from the push rod assembly and disposed to face toward one side of the rod housing; and

a sensing target disposed on one side of the push rod assembly and facing toward the sensor module, wherein the sensor module detects movement of the sensing target, wherein the sensing target includes:
a slit body coupled to one side of the rod housing and extending in a longitudinal direction thereof;
a slit plate protruding outwardly from an outer face of the slit body and extending in the longitudinal direction of the slit body; and
a plurality of sensed slits extending through the slit plate.