ACB(Set Sort, Attract out Variety) This is the next-generation sort ACB with dynamic characteristic reliability tremendously improved by adopting digital overcurrent relay inbuilt with substantial-precision A/D conversion circuit employed for measuring instruments.– ?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