The GDB-800MA is a fast-acting glass tube fuse designed for circuit protection applications, featuring a 5 mm × 20 mm physical size with nickel-plated brass endcaps and optional copper-tinned axial leads. This fuse is rated for 800 mA at 250 V AC with an interrupting rating of 35 A at rated voltage (50 Hz), providing reliable overcurrent protection with a typical cold resistance of 0.14 O and a maximum voltage drop of 190 mV at rated current. The fuse is designed to IEC 60127-2 standards and carries UL and VDE agency approvals, making it suitable for industrial and commercial electronic equipment requiring fast-acting protection. Its low breaking capacity and fast response characteristics make it ideal for protecting sensitive circuits and components in power supplies, instrumentation, and control systems.