... inside updated on 25th Nov, 2011surge protective device SPD AC 220V DK-220AC40 Type D10 ... cases for over 20 years.Material:surge protective device, SPD, Box-type SPD, surge arrester 220V ... specification for your original product.Function:surge protective device, SPD, Box-type SPD, surge arrester 220V ... Supply Capacity:We can produce 3000pcs surge protective device, SPD, Box-type SPD, surge arrester 220V ...