HEFFTRON Fuse Switch are designed for the distribution of electricity and protection against short circuits and overloads in three phase alternative current circuits with maximum operating voltage of 690V. They are intended for direct installation on horizontal or vertical bus bar system. Due to their modern and compact design installing is easy and gives much saving of space in substations and distribution boards. All technical parameters required by standards and requirements of the market were taken into account during design (conformity with IEC 60269-2).