salam....
As per title,acd tahun ni sy baru fhm concept circuit breaker iaitu moving contact and fixed contact diletakn dlm satu medium spt air, oil, vacuum. Medium ni akn memastikn arc yg terhasil dari overcurrent or short circuit will be distinguished. cara nk distinguished arc tu depends kpd medium. If air, akn ada arc chute utk suppress the arc from high energy to low energy. If vacuum, dia akn halang arc tu dari muncul....haha. if oil, arc akn menyebabkn oil tu panas....jd ada mekanisme yg akn tukar oil tu jd oil lain yg sejuk. Btw, sy dh terrer kira short circuit rating guna MVA method tpassesor tk tnye plak
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