Delay time generation apparatus for air circuit breaker

A delay time generation apparatus for an air circuit breaker that outputs a conductive signal through a switch with a preset delay time when a movable contactor contacts a fixed contactor, the apparatus comprising:

• a pin portion moved downward when the movable contactor contacts the fixed contactor;
• a main shaft rotated to a contact position or a trip position in response to movement of the movable contactor;
• a first rotating unit on the main shaft, the first rotating unit released from a state in which it is adhered to the main shaft and rotated in a clockwise direction through the pin portion when the movable contactor is moved to the contact position and in a counterclockwise direction through the main shaft when the movable contactor is moved to the trip position;
• and
• a second rotating unit below the first rotating unit, the second rotating unit rotated in response to rotation of the first rotating unit such that it contacts or separates from the switch in order to output the conductive signal,
• wherein a lower end of the pin portion includes a pressing plate that presses the first rotating unit in response to movement of the pin portion.