BK/MDL-4 is a 4 amp time-delay glass tube fuse designed for circuit protection in appliances and consumer electronics. This fuse features a 1/4" x 1-1/4" form factor and provides time-delay characteristics, allowing it to withstand temporary inrush currents without nuisance tripping. The time-delay design makes it suitable for applications where momentary overloads occur during startup. Common applications include protecting delicate electronic circuits and components in household appliances and consumer electronics equipment where precise overcurrent protection is required.