Abstract: Active current injection direct current (DC) circuit breaker (CB) bears very high loads of di/dt during small current interruptions, which may easily lead to a failed interruption. This paper proposes a coupling method of a current injecting DC CB and a superconducting fault current limiter (SFCL). Voltage during the quenching process is utilized to charge the capacitor flexibly. With the aid of unique quenching characteristics under different fault conditions, reverse currents provided by the circuit breaker follow the fault current peak value automatically. The di/dt pressure on vacuum interrupters is significantly reduced, promoting the reliability of small current interruptions. A mathematical model of the proposed topology is established in a 200 kV circuit. The rated current interruptions and 30% and 60% of rated fault current interruptions are analyzed. The di/dt under 30% of rated fault current interruptions decreases to 86% compared with the classical current injection DC CB. Finally, the feasibility of the coupling method is verified by low voltage experiments.