Safety shutter of withdrawable air circuit breaker
AssigneeLs Electric Co., Ltd.
InventorYoung-Kook KIM
Life of this patent
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Abstract
A safety shutter of the present disclosure comprises: a base unit; a shutter unit; and a cam unit. The base unit is coupled to a cradle of an air circuit breaker, and a terminal connected to a main circuit passes through the base unit. The shutter unit is coupled to the base unit so as to be spaced apart at a predetermined interval, and accommodates the terminal in the space between the shutter unit and the base unit. The cam unit extends from the base unit and penetrates the shutter unit. The shutter unit deactivates insulation by exposing the terminal in the direction of the air circuit breaker when the air circuit breaker is inserted in the direction of the base unit.
Claims10
A safety shutter comprising:
- a base unit coupled to a cradle for an air circuit breaker, wherein a terminal connected to a main circuit passes through the base unit;
- a shutter unit coupled to the base unit while being spaced apart from the base unit by a predetermined spacing, wherein the terminal is accommodated in a space defined between the shutter unit and the base unit;
- and
- a cam unit extending from the base unit in a protruding manner, wherein the cam unit passes through the shutter unit,
- wherein when the circuit breaker moves toward the base unit and retracts into the cradle, the shutter unit exposes the terminal toward the circuit breaker such that the terminal and the circuit breaker are electrically connected to each other,
- wherein when the circuit breaker moves away from the base unit and extends from the cradle, the terminal is accommodated in the space between the base unit and the shutter unit such that the terminal and the circuit breaker are electrically insulated from each other.
Dependencies are inferred from the claim text.