Cooper Industries Bussmann Electrical ALS-300 Fuse

The Bussmann ALS-300 is a 300-amp, stud-mounted special-purpose fuse from Bussmann’s ALS series. This bolt-on, one-time fuse interrupts current once it exceeds the 300 A rating, delivering non-resettable protection for high-current power paths in industrial equipment. The ALS-300A variant identifies a specific special-purpose configuration within the ALS lineup, a range of rugged, stud-mounted protective devices designed for demanding environments. Historically part of Cooper Industries and now under Eaton, Bussmann fuses are built for durable service in industrial electrical applications and are typically used in power distribution blocks and large current circuits that require a reliable, non-recoverable fuse solution. The ALS family is known for its stud-mounted construction, enabling secure mounting in protector blocks or switchgear where high-current protection is critical.