This document provides information on square body DIN 43 653 high speed fuses rated for 690V/700V voltages from 10-400 amps. It includes specifications on dimensions, ratings, agency information, electrical characteristics like total clearing I2t at different voltages and currents, and applications like DC drives, power converters, and reduced voltage starters. Curves show peak arc voltage during operation and power losses at different load currents as a percentage of rated current.