Cooper Bussmann ACK120 Fusetron Dual-Element Fuse

Cooper Bussmann ACK-120A Fusetron Dual-Element Fuse is a 120-amp, dual-element time-delay protective device in the Bussmann ACK family, designed to safeguard electrical circuits in industrial and commercial settings where motors and similarly inrush-prone loads demand reliable overload protection. As a Fusetron dual-element fuse, it provides robust interruption during sustained overloads while tolerating short startup surges, reducing nuisance trips in motor circuits, compressors, HVAC equipment, and other equipment typically wired to 120-amp circuits. The ACK-120A catalog number is commonly listed by distributors and catalogs, confirming its identity within Bussmann's Fusetron lineup and its role in protecting a range of control panels, motor starters, relay assemblies, and downstream devices in industrial electrical distributions. Long recognized for time-delay performance, this fuse balances fast protection with surge endurance, helping maintain circuit integrity and protecting conductors and components from overcurrent while accommodating transient overloads during normal equipment startup.