Extremely high breaking capacity fuses:, Protection of power semiconductors as per IEC standard 60269-1 and -4 and EN 60269-1 and -4, 500-690V voltage rating (rating 20 to 400A), gR class (gRB ratings 20 to 125A) according to VDE 636-23, - Clearing all overloads, - Improved safety and protection, -