The S500-630-R is a 5 mm × 20 mm fast-acting glass tube fuse designed for low breaking capacity circuit protection applications. It features a rated voltage of 250 V AC with an interrupting rating of 35 amps at rated voltage (50 Hz), a typical cold resistance of 0.20 O, and a typical melting I-T value of 0.35 A². The fuse is constructed with a glass tube and nickel-plated endcaps, designed to IEC 60127-2 standards, and carries multiple international agency approvals including cURus, CSA, CCC, BSI, VDE, SEMKO, and IMQ. This fuse is commonly used in electronic equipment and industrial applications requiring reliable overcurrent protection with fast response characteristics.