Bussmann FWJ-500A Semiconductor Fuse

Bussmann FWJ-500A Semiconductor Fuse

Ultra-Fast Protection for Critical Electronics

Engineered for precision protection in high-stakes applications, the Bussmann FWJ-500A is a 500-amp semiconductor fuse designed to safeguard sensitive electronics like IGBTs, thyristors, and diodes. With its ultra-rapid response to overloads and short circuits, it minimizes equipment damage and downtime in industrial power systems.

Key Features:

• High Interrupt Rating: Reliably interrupts fault currents up to 200 kA at 700V AC/DC.
• Low I²t Value: Limits energy let-through to protect delicate semiconductor components.
• Voltage Rating: 700V AC/DC for versatile use in motor drives, UPS systems, and inverters.
• Time-Current Performance: Extremely fast-acting (sub-millisecond response) to isolate faults before catastrophic failure.
• Robust Construction: Sand-filled ceramic body with silver-plated end caps ensures arc quenching and stable conductivity.
• Standards Compliance: Meets IEC 60269-4 and UL 248-14 for global safety assurance.

Ideal For:

• Variable-frequency drives (VFDs)
• Renewable energy converters
• Industrial automation controls
• Welding equipment
• Rail traction systems

Trusted by engineers worldwide, the FWJ-500A delivers uncompromising protection where milliseconds matter. Reduce maintenance costs and extend equipment lifespan with Eaton’s Bussmann innovation.