Ferraz Shawmut Amp-TrapĀ® Fast Acting Fuse, Current Limiting, Series: A4J, Rejection/Non-Rejection: Rejection, 450 A, 600 VAC/300 VDC, 200/100 kA Interrupt, Class: J Series, Knife Blade Terminal, Holder Mount, Cylindrical Body, Polyester, 2-1/2 in Dia x 8 in L Body Size