Fuse, Glass Fuse, 4 A, Fast Acting, 2 1/4 in L x 5/8 inch dia Fuse Size GLR-4

Features

• One-piece, fast-acting glass fuses with knob combine a fused body and an insulating cap into a single unit for use as an in-line fuse to protect fluorescent lighting fixtures from overcurrent. 
• They fit into a compatible holder to form a fuse assembly, which can be installed in each fixture on a branch circuit. 
• In the event of an overcurrent, the faulty fixture will be isolated to prevent the shutdown of every fixture on a circuit. 
• Also called fast-blow glass fuses, they open within seconds of being exposed to overloads and short circuits. 
• They are highly sensitive to changes in current flow and don't tolerate temporary overload currents or power surges.
• Glass fuses provide overcurrent protection for low-current circuits in appliances, electronics circuit boards, and lighting fixtures. 
• They typically have a voltage rating of 300VAC or less and are used for applications where they won't be exposed to high heat that could shatter the glass. 
• Their small, cylindrical body is see-through for checking whether the fuse wire is intact or has melted.