Delay time generation apparatus for air circuit breaker

A delay time generation apparatus for an air circuit breaker, for outputting a conductive signal through a switch with a preset delay time when a movable contactor is brought into contact with a fixed contactor, the apparatus comprising:

• a pin portion moved downward when the movable contactor is brought into contact with the fixed contactor;
• a main shaft rotated in response to a movement of the movable contactor to a contact position or a trip position;
• a first rotating unit located to be closely adhered on the main shaft, the first rotating unit being released from the adhered state on the main shaft and rotated in a clockwise direction through the pin portion when the movable contactor is moved to the contact position, and rotated in a counterclockwise direction through the main shaft when the movable contactor is moved to the trip position;
• and
• a second rotating unit located below the first rotating unit, the second rotating unit being rotated in response to the rotation of the first rotating unit to be brought into contact with or separated from the switch such that the conductive signal is output.