Mulit-pole single-piece LV lightning arrester Pole: 1P,2P, 3P, 4P Ampere: 30-60KA ... 60-100KA, 80-150KA, 150-200KA Low voltage power surge lightning arrester 1. Description: surge protection device (SPD, surge protector, ... separate from the power system and give indication signal. White means normal, red means abnormal, it also could be ... sale are provided. multi-pole single-piece LV lightning arrester