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8A Small Glass Fuse 5X20mm ( Pack Of 5 )

8A Small Glass Fuse 5X20mm ( Pack Of 5 )

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ComponentSpecification
Current Rating8 Amps (8A)
Voltage Rating250V AC
Fuse TypeFast-Acting (Fast-Blow)
Dimensions5mm (Diameter) x 20mm (Length)
Body MaterialTransparent Glass
QuantityPack of 5 Units
Price
₹ 12.71 ₹ 12.71
(Tax included)

Product Description The 8A Small Glass Fuse 5x20mm is a reliable safety component designed to protect medium-to-high power electronic circuits. These "small" format cartridge fuses act as a sacrificial link, instantly interrupting electrical flow when the 8A threshold is reached. Featuring a high-clarity glass body for rapid visual inspection and nickel-plated brass end caps for steady conductivity, this pack of 5 is perfect for protecting power supplies, motor controllers, and consumer electronics.

Key Features

  • Instant Overload Response: Fast-acting filament design triggers immediately when current exceeds 8A to prevent heat damage.

  • Transparent Diagnostic Tube: Clear glass allows for quick visual inspection to confirm if the fuse has blown.

  • Corrosion-Resistant Caps: Nickel-plated brass end caps ensure low contact resistance and long-term durability.

  • Universal Small Format: Standard 5x20mm dimensions compatible with most panel-mount and PCB-mount fuse holders.

  • Prototyping Ready: Pack of 5 provides essential spares for testing and hardware development.

Technical Details

  • Breaking Capacity: Safely interrupts current flow in circuits up to 250V AC without the glass tube shattering.

  • Filament Composition: Precision-calibrated alloy wire designed for accurate and repeatable 8A triggering.

  • Response Characteristic: Fast-Blow (Type F), which is critical for protecting components that cannot tolerate sustained surges.

  • Operating Temperature: Maintains stable current ratings in ambient environments ranging from -20°C to +85°C.

  • Insulation Resistance: Once triggered, the glass body provides complete electrical isolation to prevent arcing.

  • Voltage Compliance: Fully rated for 250V AC, but also highly effective in 12V and 24V DC battery systems.

  • Internal Resistance: Low internal cold resistance to minimise voltage drop across the fuse link.

  • Mechanical Standards: Complies with standard 5mm x 20mm (M20) miniature cartridge fuse specifications.

  • Marking: Caps are clearly stamped with 8A 250V for permanent and error-free identification.

  • Vibration Resistance: Designed to withstand the mechanical vibrations common in industrial and mobile robotics.

  • Lead-Free Construction: Compliant with modern RoHS environmental safety standards.

  • Circuit Safeguard: Protects expensive PCBs and wiring harnesses by failing first during a short-circuit event.

Prototyping and Engineering Tips from Robogears

  • 9V Battery Use: For 9V Hi-Watt battery projects, an 8A fuse is suitable for high-current loads like multiple high-torque servos to prevent battery overheating.

  • 18650 Series Protection: When building 18650 Lithium-ion packs, use this 8A fuse for the main output rail of medium-sized robots to ensure safety during motor stalls.

  • IC & Driver Safety: Ideal for protecting the L298N Dual H-Bridge when driving motors that have a stall current near the driver's maximum limit.

  • Troubleshooting Tip: If your 8A fuse blows repeatedly, use a Digital Multimeter to check for a "dead short" between your power rails before replacing it.

  • Related Products: We recommend pairing these with our 5x20mm Inline Screw-Type Fuse Holders and Digital Multimeters.

Package Includes

  • 5 x 8A 5x20mm Glass Fuses.

Disclaimer: Images are for illustration purposes only. Always disconnect the power source before inspection or replacement. Never replace a blown fuse with a wire or a higher-rated fuse than specified.