ACB(Fastened Kind, Draw out Form) This is the subsequent-generation sort ACB with dynamic characteristic dependability drastically enhanced by adopting digital overcurrent relay in-built with substantial-precision A/D conversion circuit employed 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