Mersen Protistor® 14x51 Type gR Fuses From Mersen, a range of cylindrical Ultra-rapid fuses available in various current ratings with or without built-in strikers. These 14 x 51 Protistor® fuses are designed to protect power semi-conductors which comply with IEC 60269-1 and -4. Features and Benefits • gR class
• With or without striker
• Improved safety and protection
• Distribution circuit fuses
• IEC standard 60269-4 compliant
• Clearing all overloads