Patent ID: 11942292
Assignee: LS ELECTRIC CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 3:
4. A vacuum circuit breaker comprising:
a body in which a mechanism assembly for generating a driving force is installed;
an insulating housing installed on one side of the body;
a vacuum interrupter module housed in the insulating housing, wherein the vacuum interrupter module includes:
a vacuum interrupter having a fixed contact and a movable contact inside an insulating container;
a push rod assembly for receiving the driving force from the mechanism assembly to contact the movable contact and the fixed contact each other or remove the movable contact and the fixed contact from each other; and
a main lever coupled to an output shaft of the mechanism assembly to transmit the driving force to the push rod assembly; and
a contact monitoring module installed under the vacuum interrupter module to detect a displacement according to a moving direction of the push rod assembly,

wherein the contact monitoring module comprises:
a linear sensor coupled to a bottom of the push rod assembly to detect a displacement according to a moving direction of a push rod; and
a sensor holder installed adjacent to the bottom of the push rod assembly, wherein the sensor holder is coupled to the linear sensor to process a signal transmitted from the linear sensor,
wherein the linear sensor is coupled to a bottom of a connector of a main lever transmitting the driving force generated from the mechanism assembly to the push rod assembly.