Today in core industries like Thermal Power, cement, chemical, fertilizer, steel industries, wherein higher level of enclosure protection class is very much important for safe and reliable operation of UPS system as iron, coal dust etc are prevalent in such industries.

Hi-Rel system is designed with IP-41 class of enclosure protection.

Fist digit is protection against solid particles, second digit is protection against liquid particles.

UPS with enclosure of IP-41 class of protection, 4 digit is protection against solid object of 1mm and 1for protection against vertical falling of water.