Meet the Jandorf GDA 500 amps Fast Acting Fuse, a compact 5x20 mm cartridge fuse designed to protect high-current electronic circuits with rapid response. This 2-pack delivers fast interruption at 500A, helping your power supplies, control boards, and sensitive electronics shut down instantly on overloads to prevent damage and downtime.
Why this fuse stands out
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High-current protection in a small form: 500A fast-acting rating in a standard 5x20 mm size fits most compact fuse holders and enclosures, making it a versatile upgrade for hobbyist builds and professional equipment alike.
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Ceramic tube construction: Ceramic tubes provide excellent heat resistance and mechanical stability, maintaining performance even in demanding environments.
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Durable, low-resistance contacts: Endcaps are plated brass, delivering reliable conduction and easy replacement in routine maintenance.
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UL Listed for safety: UL recognition adds a layer of assurance for compliant electronics assembly and field-replaceable components.
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Two-pack convenience: The carded packaging includes two units, ensuring you have a ready spare for quick servicing or stocking your parts drawer.
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Specified for 250-volt systems: Suitable for a wide range of electronic circuits and power-related applications where precise, fast overcurrent protection is critical.
Ideal use cases
- Power supplies and DC-DC converters that require rapid de-energization on fault conditions
- Industrial control panels and test benches where high-current protection is essential
- Electronic carts, shelving, or equipment with 250V circuits needing dependable fast-acting protection
- Repairs or upgrades where a genuine Jandorf GDA series fuse is preferred for performance consistency
Practical guidance for best results
- Match the fuse rating to your circuit’s expected fault current and the fuse holder’s compatibility with 5x20 mm fast-acting fuses.
- Use the 2-pack to keep a spare on hand near critical equipment to minimize downtime during repairs.
- Remember this is a fast-acting fuse—great for circuits that can tolerate a quick interruption, but not intended for applications with high inrush or restart surges where a slow-blow alternative might be more appropriate.
- Inspect and replace in pairs on redundant or dual-channel circuits to maintain balanced protection across channels.
Specifications at a glance
- Amps: 500 A
- Volts: 250 V
- Tube Construction: Ceramic
- Endcap Construction: Plated Brass
- Size: 5 mm diameter x 20 mm length (5x20mm)
- Packaging: Carded, 2-pack
- UL Listed: Yes
- CSA Listed: No
- Product Type: Fast Acting Fuse
- Brand: Jandorf (Sub Brand: GDA)
In short, the Jandorf GDA 500A fast-acting fuse is a reliable, ready-to-use solution for protecting high-current electronic circuits with speed and precision. Its robust ceramic tube, brass endcaps, and UL approval combine to deliver dependable performance in professional and DIY projects alike.
