450Amp, 700VAC/DC, 100,000AIC Interrupting Rating, Amp-Trap Ultra-Fast-Acting Form 101 Semiconductor Protection Fuse, engineered with a heavily reinforced high-voltage ceramic or fiberglass tube enclosure to manage massive 700V potential gradients safely. It delivers rapid, low-loss electrical cutoff during high-energy industrial faults without risking explosive outer container breakdown, housed in a premium heavy-duty bolt-on power block configuration. Exact Industry Equals: FWD-450A,FWJ-450A,E450A70P,K70P450,SF70P450,A70P450-4,A70P450-4K,70P450A.