Bussmann fwp 690v700v 20 100a 58mm high speed fuses without striker bussmann fwp 25a22fa this high speed fuse from bussmann is a ferrule style fuse without indicating striker designed with excellent cycling capability and dc performance the fuse also offers low arc voltage and low energy let through i2t plus low watts loss in a compact size bussmann fwp 25a22fa 690v700v 25a high speed fuse