ACB(Preset Type, Draw out Sort) That is a future-technology type ACB with dynamic characteristic reliability considerably enhanced by adopting electronic overcurrent relay inbuilt with significant-precision A/D conversion circuit useful for measuring devices.– ?i?u ch?nh th?i gian chuy?n m?ch tr?c ti?p trên m?t c?a b? ?i?u khi?nB? ?i?u khi?n ATS