syempre, semiconductor is better than a magnetic relay, pero for the sake that it should work, ok na din yung relay. at syempre, gagamit tayo ng mas mataas na rating para di masunog.
btw, iv known this teacher in electronics, he ask students to use relay as the tripping breaker during short in power supply. and all the time, naka "on" yung relay, di naman nasususunog. so, sa tingin ko, basta tama yung rating na ginagamit mo, di naman yan masususnog.