30A Current Rating, Class J Physical Footprint, High-Capacity Current-Limiting Power Fuse, 600VAC Max Voltage, 200kA Interrupting Capacity at 600V, -40°C to +85°C Standard Industrial Operational Window, Compact Melamine Cylindrical Ferrule Package | High-performance industrial-grade current-limiting branch protection fuse manufactured by Bussmann (Eaton) featuring an advanced fast-clearing non-indicating internal silver link matrix embedded in a high-density silica filler, explicitly engineered to isolate high electrical transient paths, completely eliminate structural shattering under catastrophic short-circuit conditions, restrict hazardous peak let-through energy loops, and cleanly shield downstream variable frequency drives (VFDs), motor starters, and high-vibration industrial panelboards from severe phase-to-ground faults | Industry Exact Equivalents: Bussmann AFJ-30, Eaton AFJ-30, Bussmann AFJ30 | Industry Functional Cross-References: Littelfuse JLS30, Mersen / Ferraz Shawmut A4J30, Edison JFS30 | Military Specification National Stock Number (NSN): 5920-01-384-2530