Abstract: The present disclosure provides a vacuum circuit breaker which can measure and monitor temperature of a tulip contactor, the vacuum circuit breaker comprising: a conductive pole including a tulip contactor; and a temperature detecting sensor disposed adjacent to the tulip contactor, wherein the temperature detecting sensor comprises: a sensor body; a fixing band coupled to the sensor body and disposed to surround a part of the conductive pole; and a temperature measurement part which comes into contact with a specific point of the tulip contactor to measure the temperature of the specific point, wherein a sensor insertion hole for accommodating a part of the temperature measurement part is recessedly formed at one surface of the tulip contactor facing the sensor body.

Abstract: An arc eliminator includes a housing having a space formed therein and including an opening, an arc extinguishing part installed in the housing and including a moving rod disposed to be movable to the space, an indicator rotatably installed within the housing and seen through the opening, and an indicator rotating mechanism interworking with the moving rod when the moving rod moves, to rotate the indicator. A closing state and opening state of an arc extinguishing part may be easily recognized through an indicator and an arc accident may be minimized.

Abstract: The present invention relates to a withdrawable arc eliminator having an interlock function, and more particularly, to a withdrawable arc eliminator having an interlock function capable of preventing insertion or withdrawal of an arc eliminator applied to an electrical panel, in a closed state of the arc eliminator.

Abstract: An arc eliminator includes a housing having a space formed therein and including an opening, an arc extinguishing part installed in the housing and including a moving rod disposed to be movable to the space, an indicator rotatably installed within the housing and seen through the opening, and an indicator rotating mechanism interworking with the moving rod when the moving rod moves, to rotate the indicator. A closing state and opening state of an arc extinguishing part may be easily recognized through an indicator and an arc accident may be minimized.

Abstract: The present invention relates to an interlock device of a withdrawable arc eliminator, and more particularly, to an interlock device of a withdrawable arc eliminator capable of preventing insertion or withdrawal of an arc eliminator applied to an electrical panel, in a closed state of the arc eliminator.