Motor with on delay timer. In this circuit, we use TP MCB ( Tripple Miniature Circuit Breaker ), a magnetic contactor, a 3-phase motor, a timer, a DP MCB, a start switch, and a stop switch. First, we need to connect the TP MCB with the power source, then connect the contactor, then connect the timer and DP MCB with the contractor, then connect the start switch, and stop switch, then connect the motor with the contactor. Now this circuit is ready for use.