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

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.