Littelfuse BLS004, Fast-Acting Midget Fuse, 4A, 600VAC, 1 Piece

The BLS series fast-acting fuses are 13 ⁄8" long in comparison to other midget fuses, which are 1½" long. They provide space-saving, low-cost protection for street lighting, metering, control and electronic circuits. These fuses open circuits quickly when surges are detected, providing exceptional security for equipment requiring fast overload protection.