5A 6.3x32mm Big Glass Fuse - CEI High-Quality Large Fuse (Pack of 20)

Product Description The CEI 5A 6.3x32mm Big Glass Fuse is a heavy-duty circuit protection component designed for high-power electronic systems. Often referred to as "Big Fuses" or 1/4 inch x 1-1/4 inch fuses, these are significantly larger than standard 5x20mm variants and are built to handle higher energy surges. With a 5-Amp rating, they provide a robust safety barrier for industrial equipment, large power supplies, and automotive electronics, ensuring the circuit is broken instantly during an overcurrent event.

Key Features

• Large Format Protection: The 6.3x32mm size provides a larger surface area for better heat dissipation in high-power circuits.

• Instant Trip Response: Fast-acting filament design interrupts the current flow immediately when the 5A threshold is exceeded.

• Easy Visual Check: Clear glass tube housing allows for rapid identification of a blown fuse without a multimeter.

• High Conductivity Caps: Features nickel-plated brass end caps that resist oxidation and ensure a low-resistance connection.

• Professional Bulk Pack: Includes 20 pieces, ideal for industrial maintenance, laboratories, and large-scale DIY projects.

Technical Details

• Breaking Capacity: Engineered to safely handle significant fault currents in 250V AC environments.

• Filament Composition: Calibrated zinc or copper alloy wire for precise 5A current triggering.

• End Cap Material: Nickel-plated brass for superior mechanical strength and corrosion resistance.

• Voltage Compliance: Fully rated for 250V AC, and highly effective in lower voltage DC applications.

• Response Speed: Classified as "Fast-Blow" (F), designed to react significantly faster than time-delay or "Slow-Blow" fuses.

• Insulation Properties: The glass body ensures complete electrical isolation once the internal link is severed.

• Mechanical Standards: Complies with standard North American large-cartridge fuse dimensions (6.35mm x 31.75mm).

• Thermal Range: Maintains accurate current ratings in operating temperatures from -20°C up to +85°C.

• Labeling: Caps are clearly embossed with "5A 250V" for permanent and easy identification.

• Long-Term Reliability: Designed to withstand minor mechanical vibrations without premature filament failure.

• Storage Stability: Indefinite shelf life when kept in a dry, non-corrosive storage container.

• Circuit Safety: Prevents costly damage to transformers, motors, and high-end power semiconductors.