The advantages of fast fault current interruption in SSPC - compared to traditional mechanical circuit breakers, the fault current clearing time is limited by mechanical response and arc extinguishing time, ranging from 10 to 100 milliseconds. However, this design work demonstrates that SiC based SSPCs can interrupt fault currents within sub microseconds. This speed will allowSSPCImmediately cut off the fault current upon detecting it, much earlier than the maximum short-circuit current of the usual design line gauge or cable size. Therefore, by limiting the magnitude of fault current, the weight of wires and cables can be significantly reduced. In addition, rapid fault current response can protect generators, transformers, and terminal equipment. Improving reliability - Traditional molded case circuit breakers (MCCBs) and fuses can cause arcing when disconnecting circuits. Electric arc is a huge danger that can cause contact welding, leading to interrupted faults. As the name suggests, solid-state devices do not have arc problems.

The reduction in fault current amplitude and clearing time greatly reduces the likelihood of electrical system fires. In addition, the replacement of mechanical relays and contactors eliminates the common aging problem of mechanical bimetallic circuit breakers. Size and weight advantages-SSPCCan be located at any position in the onboard system to achieve optimal wiring. Compared to MCCB, the weight reduction of SSPC and the reduction of wires and cables are crucial for economically efficient aircraft design. Research has shown that in a fleet of 800 wide body aircraft, each aircraft can save 1 pound (0.454 kilograms) worth $830700 over 15 years. For military aircraft that are crucial for maneuverability, weight reduction brings about improvements in acceleration and maneuverability. Accessible remote control - Unlike solid-state circuit breakers (SSCBs), SSPCs integrate remote control and monitoring functions, which was the main advantage of the first SSPC patent in 1987 [13]. It allows for more intelligent coordination with other protective devices in the system and can be controlled by software.

Content cited in: 2011 Twenty Sixth Annual IEEE[High current and thermal transient design of a SiC SSPC for aircraft application]