SIBA 500mA Very Fast Acting Fuse, 5mm x 20mm, 250V AC

The SIBA 500mA Very Fast Acting Fuse is a high-performance, miniature electrical component designed for precise and reliable protection of sensitive electronic circuits. Featuring a sand-filled ceramic tube construction, this fuse offers exceptional safety with a very short cut-off time, responding in as little as one-tenth of a cycle under a 10x overload condition. Its primary function is to safeguard delicate semiconductors—such as thyristors and rectifiers—from damage caused by overloads and short circuits.

This fuse is engineered with a high interrupting rating of up to 70kA, providing robust protection in demanding industrial and commercial environments. Key electrical characteristics include a low voltage drop of 800mV and a minimal power dissipation of 0.4W, contributing to efficient system performance. Its compact 5mm x 20mm form factor makes it suitable for a wide range of applications where space is at a premium, without compromising on protection levels.

Key Features & Specifications

• Blow Characteristic: Very Fast Acting (FF) for immediate circuit interruption.
• High Interrupting Rating: Up to 70kA, suitable for high-fault current applications.
• Low Power Dissipation: Just 0.4W for efficient operation.
• Low Voltage Drop: 800mV minimises energy loss.
• Robust Construction: Sand-filled ceramic tube for reliability and safety.
• Protection Focus: Specifically designed for semiconductors and sensitive electronic components.

Ideal for use in power supplies, industrial control systems, and any equipment containing vulnerable semiconductors, this SIBA fuse ensures your valuable electronics are protected from unpredictable electrical faults.