LPI Surge Filter boundaries the voltage differential as a result of a lightning induced impulse concerning stage and neutral in addition to from neutral to floor. Hence giving each frequent mode and differential (transverse) manner safety.Bảo vệ đa tầng: Bộ cắt lọc sét đầu nguồn 3 pha BSF200-three/320-63A-PN-VTD-S sử dụng cô