Bussmann FWJ-100A High Speed Fuse: Precision Protection for Demanding Circuits

Overview

The Bussmann FWJ-100A High Speed Fuse delivers ultra-rapid circuit protection for sensitive electronics and power systems. Engineered for critical applications where milliseconds matter, this 100-amp fuse safeguards equipment by interrupting fault currents faster than conventional fuses, minimizing damage and downtime. Ideal for semiconductor protection, industrial drives, and renewable energy systems.

Key Features

⚡️ Microsecond Response Time
Interrupts short-circuit currents in under 1/8 cycle (≤2 ms) to protect vulnerable components like diodes, IGBTs, and thyristors.

🛡️ High Interrupt Rating
100kA interrupting capacity ensures reliable performance under extreme fault conditions.

🌡️ Robust Construction
Sand-filled ceramic body withstands high temperatures and arc energies, preventing rupture during operation.

🔌 Space-Efficient Design
Compact dimensions (50.8mm x 15.3mm) enable integration in dense electrical panels.

🔧 Drop-In Replacement
Compatible with standard fuse holders meeting IEC 60269-4 requirements.

Technical Specifications

Typical Applications

• Solar/wind power inverters
• Motor drives & VFDs
• UPS systems
• Welding equipment
• EV charging stations
• Industrial automation controls

Why Choose Bussmann?
Backed by Eaton’s global engineering expertise, the FWJ series offers industry-leading reliability and precision. Every fuse undergoes rigorous testing to ensure consistent performance, helping you maintain operational continuity while reducing maintenance costs.

⚠️ Install Note: Always replace fuses with identical specifications and verify compatibility with system voltage/current requirements.

This description uses clear technical language while emphasizing speed-critical applications and compliance data. The structured Markdown layout ensures easy scanning for critical specs.