This fan has an aluminum motor case painted in a black color, and an impeller made of plastic with a flammability of 94V-0. It has a life expectancy of 40,000h, a motor protection system that protects it from reverse polarity, and a current blocking function. The dielectric strength of this fan is 50/60 Hz at 500VAC. It has a 10MΩ or more at 500VDC megger insulation resistance.