Glass Tube Fuse 5×20mm / 6×30mm — 250V Fast-Blow Protection for Electronics & Industrial Equipment

When a power surge hits, the difference between a minor inconvenience and a catastrophic equipment failure comes down to one small component: the fuse. Our pure copper core glass tube fuses are engineered to respond in milliseconds, sacrificing themselves so your circuits never have to.

🔍 Product Overview

• Type: Fast-Blow Glass Tube Fuse (F-type)
• Sizes: 5×20mm & 6×30mm
• Voltage Rating: 250V AC
• Current Range: 0.1A, 0.5A, 1A, 1.5A, 2A, 3A, 3.15A, 4A, 5A, 6A, 6.3A, 7A, 8A, 10A, 12A, 15A, 20A, 25A, 30A
• Element Material: Pure Copper — superior conductivity & consistent blow characteristics
• Body: Borosilicate glass tube with nickel-plated brass end caps
• Standards: Compliant with IEC 60127 / UL 248 specifications

⚡ Why Pure Copper Element Matters

Many budget fuses use aluminum or zinc alloy elements that oxidize over time, leading to unpredictable blow characteristics and premature failure. Our fuses use a pure copper fusible element that delivers:

• ✅ Precise, repeatable interrupting performance
• ✅ Stable resistance across temperature ranges
• ✅ Longer shelf life — no oxidation degradation
• ✅ Clear visual indication of blown status through transparent glass body

🏭 Applications

These glass tube fuses are trusted by engineers and technicians worldwide for:

• Consumer Electronics: Power adapters, audio amplifiers, LED drivers, TV sets
• Industrial Equipment: Control panels, PLCs, motor controllers, instrumentation
• Automotive & Marine: Auxiliary circuits, accessory protection (12V–24V DC applications)
• Home Appliances: Microwave ovens, washing machines, air conditioners
• Laboratory & Test Equipment: Bench power supplies, oscilloscopes, signal generators
• PCB & Prototype Design: Inline fuse holders, PCB-mount fuse clips

📦 Available Pack Configurations

🔬 Technical Specifications

🌍 Global Shipping & Sourcing

Manufactured in China and shipped worldwide. Our fuses are sourced directly from certified production facilities with full quality inspection. Whether you're a procurement engineer in Germany, a repair technician in the United States, or an OEM manufacturer in Southeast Asia — we ship reliably to your door.

❓ Frequently Asked Questions

Q: What is the difference between 5×20mm and 6×30mm fuses?
A: The 5×20mm is the most common size for consumer electronics and small appliances. The 6×30mm is used in higher-current industrial and appliance applications. Always check your fuse holder specification before ordering.

Q: Are these fast-blow or slow-blow fuses?
A: These are fast-blow (F-type) fuses. They interrupt the circuit almost instantly upon overcurrent. If your application requires tolerance for inrush current (e.g., motors, transformers), please select a slow-blow (T-type) fuse instead.

Q: Can I use these for DC circuits?
A: Yes, glass tube fuses rated at 250V AC are generally suitable for DC circuits up to 125V DC. For higher DC voltages, consult the specific DC interrupting rating.

Q: Do you offer custom current ratings or bulk OEM orders?
A: Yes. Contact us for custom assortment packs, private labeling, or high-volume OEM pricing.

Protect your circuits with precision. Order your glass tube fuse assortment today and keep your equipment running safely.