Bussmann FWJ-40A High Speed Fuse

Overview

The Bussmann FWJ-40A High Speed Fuse is a premium circuit protection device engineered to deliver ultra-rapid response to overcurrent events. Designed for 40-ampere applications, this fuse safeguards sensitive electronic equipment and power systems by interrupting fault currents within milliseconds, minimizing damage and downtime.

Key Features

• Ultra-Fast Response: Clears short-circuit faults in under 1 ms to protect vulnerable components.
• High Breaking Capacity: Withstands up to 300kA interrupt rating for robust protection in demanding environments.
• Precision Performance: Rated for 40A at 700V AC/500V DC, ensuring reliable operation in industrial power systems.
• Compact Design: Space-saving cylindrical form factor (10x38mm) for easy integration into panels, inverters, and motor drives.
• Endurance-Tested: Certified to IEC 60269-4 standards for consistent performance under extreme conditions.

Applications

Ideal for:

• Semiconductor protection (diode/thyristor circuits)
• Solar inverters and renewable energy systems
• UPS (Uninterruptible Power Supplies)
• Industrial motor drives and robotics
• Railway traction systems

Technical Specifications

Why Choose Bussmann?

• Industry-Leading Reliability: Backed by Eaton’s 100+ years of circuit protection expertise.
• Zero Maintenance: Non-degrading design ensures consistent performance without recalibration.
• Global Compliance: Meets international safety certifications for cross-border deployments.

Protect critical assets with the speed and precision of Bussmann engineering—where milliseconds make the difference.