Key benefits Fast, reliable protection: Fast-blow glass fuses interrupt overloads quickly to protect sensitive components and prevent downstream damage. Easy to service: Transparent glass bodies let you visually confirm a blown fuse; standard sizes make replacements fast and straightforward. Space-saving and versatile: Compact 5x20 mm and 6x30 mm formats fit common holders and panels for tight layouts. What this product is Fast-blow glass fuses with metal end caps, available in two standard sizes: 5x20 mm and 6x30 mm. Rated 250 V with current options ranging from 0.1 A to 30 A, including a 0.5 A value. 0.5 A fuses are available in the 5x20 mm size and sold as a pack of 10 pieces (5x20 mm, 0.5 A). Construction and performance Glass body: allows quick visual inspection to confirm continuity or a blown element. Metal end caps: secure, reliable contact in standard holders. Fast-blow design: interrupts current rapidly on overloads or short circuits to protect electronics. Compatibility and packaging Fits standard fuse holders and panels designed for 5x20 mm or 6x30 mm fuses. 0.5 A 5x20 mm version is available in a pack of 10 for spares or small installations. Typical applications (real-world scenarios) Audio equipment: Protect preamps, mixers, and loud electronics from amplifier faults and short circuits. Small appliances and power supplies: Safeguard transformers, adapter circuits, and consumer devices against overload. Hobby and control circuits: Use in DIY electronics, motor controllers, and control panels where fast interruption is required. How it solves problems Protects sensitive circuits faster than slow-blow types, reducing the chance of component damage. Standard sizes and clear ratings reduce downtime by simplifying fuse selection and replacement. Compact form factor enables protection even in constrained enclosures. Installation guidance Always match both the fuse size (5x20 mm or 6x30 mm) and the required current rating (0.1 A to 30 A) to the circuit specifications. Replace blown fuses with the same type and rating; do not substitute with higher-current fuses. Use appropriate fuse holders or panel mounts rated for 250 V. Specifications summary Types: Fast-blow glass fuses Sizes: 5x20 mm, 6x30 mm Voltage rating: 250 V Current range: 0.1 A – 30 A (including 0.5 A) Construction: Glass body, metal end caps Pack: 5x20 mm, 0.5 A available as 10 pieces Reliable, compact, and easy to service—these glass fast-blow fuses provide clear visual inspection, rapid overload interruption, and compatibility with standard holders for a wide range of electronic protection needs.