ACB(Set Variety, Draw out Variety) This is the next-generation kind ACB with dynamic characteristic trustworthiness significantly improved by adopting electronic overcurrent relay built-in with significant-precision A/D conversion circuit employed 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?