Fuse Holder 14X51, Include Fuse: Protistor, No: W078035, 660V-AC-12A. Fuse Holder 14X51 Include Fuse: Protistor No: W078035 660V-AC-12A 21501 Legrand is a high-quality electrical component from Legrand that is commonly used in industrial applications. It can be purchased at PLC2Day for all your electrical needs.