Fault and Load Current Interruption in Low-Voltage System Using Fuse-Semiconductor Current-Limiting Circuit Breaker

Abstract

For the realization of carbon neutrality and an advanced information society, we have previously developed a novel current-limiting circuit breaker composed of a fuse, a power semiconductor and a fuse exchanger. However, its feasibility has been confirmed only for fault current interruption in a low voltage range of 100-500V. In this paper, the current-limiting circuit breaker was successfully used for fault and load current interruption at DC 1.5kV, thus demonstrating the high versatility of the circuit breaker.