Glass fuses Key benefits Reliable overcurrent protection that prevents damage to circuits and connected devices. Transparent glass body gives an immediate visual check of the fuse element to confirm a blown fuse. Simple, low-cost replacement part compatible with standard fuse holders. Compact form factor for tight spaces and easy integration into consumer and industrial equipment. What it does Glass fuses protect electrical circuits by interrupting current flow when a fault or overload occurs. The metal wire inside the glass tube melts under excessive current, stopping the flow and preventing further damage. Main attributes Construction: glass tube with metal end caps and a visible fuse element. Variants: available in different performance characteristics (fast-acting and time-delay/slow-blow) to match circuit behavior. Sizes and formats: produced in common standard sizes for panel and PCB-mounted holders; check physical dimensions and end-cap type for compatibility. Performance: specified for rated current and voltage by the manufacturer; choose a fuse with the correct ratings for safe and reliable operation. Compatibility and selection tips Match both the rated current and voltage of the original fuse. Size and end-cap style must fit the fuse holder. Consider the circuit’s inrush and transient characteristics when choosing fast-acting versus time-delay types. Use glass fuses in applications where visual confirmation of a blown element is useful and where the fuse’s rated characteristics meet the circuit requirements. Typical applications Consumer electronics: audio equipment, amplifiers, and power supplies where compact, visible fusing is needed. Appliances and lighting: replace blown fuses in household devices and lighting fixtures with the correct rated glass fuse. Industrial and laboratory equipment: protect control modules and bench power supplies where a clear visual indication of a blown fuse speeds troubleshooting. Installation and safety Always power down and isolate the circuit before replacing a fuse. Replace only with a fuse of the same type, rated current, and voltage. Using an incorrect fuse can create a fire or equipment risk. Keep spare fuses on hand matched to the devices you service to reduce downtime. Practical note Before purchase, verify the existing fuse’s physical size, end-cap type, and electrical ratings so you select a compatible replacement.