20A Current Rating, Non-Time-Delay Single-Element Link Matrix, Fast-Acting Electric Vehicle / Battery Charging Defense Fuse, 130VAC Max Voltage, -40°C to +85°C Standard Operational Window, Radial Plated Tab Mounting Terminals | High-performance low-voltage specialty power circuit protection fuse manufactured by Bussmann (Eaton) featuring a ruggedized melamine isolation tube housing construction and bright structural center-stud attachment lugs, explicitly engineered to isolate high electrical transient paths, completely eliminate premature thermal aging fatigue from cyclic line surges, and deliver stable, immediate short-circuit clearing protection loops across industrial 12V high-output air compressor arrays, fork truck chargers, and heavy DC utility circuits | Industry Exact Equivalents: Bussmann ACK-20, Eaton ACK-20, Bussmann ACK20 | Industry Functional Cross-References: Littelfuse ALS-20, Mersen / Ferraz Shawmut A13X20-1, Edison ELS20 | Military Specification National Stock Number (NSN): 5920-01-314-2200