ACB(Preset Kind, Draw out Kind) It is a upcoming-technology form ACB with dynamic attribute dependability considerably enhanced by adopting digital overcurrent relay inbuilt with large-precision A/D conversion circuit utilized for measuring instruments.S? d?ng cho h? th?ng ?i?n h? th? khi ngu?n c?p ph? t?i b? gián ?o?n B? chuy?n m?ch t? ??ng, giá