Bussmann FWJ-70A High Speed Fuse

Product Description: Bussmann FWJ-70A High Speed Fuse

Overview
The Bussmann FWJ-70A is a high-speed fuse engineered for ultra-rapid circuit protection in demanding industrial and power electronics applications. Designed to safeguard sensitive semiconductor equipment, it delivers exceptional performance with a 70A current rating and a 700V DC voltage rating. Its precision engineering minimizes let-through energy during fault conditions, preventing costly damage to diodes, thyristors, rectifiers, and IGBT modules.

Key Features

• Ultra-Fast Response: Clears fault currents in microseconds to protect fragile semiconductors from overcurrent events.
• High Voltage Rating: 700V DC capability for robust performance in industrial power systems, solar inverters, and motor drives.
• Current Rating: 70A continuous operation at 25°C ambient temperature.
• High Interrupting Capacity: Withstands up to 200kA short-circuit currents for reliable protection under extreme conditions.
• Ceramic Construction: Reinforced ceramic body with sand-filled arc quenching for superior durability and flame resistance.
• Ferruled Terminals: Silver-plated brass ferrules ensure low contact resistance and secure mounting in fuse holders.
• Standards Compliance: Meets UL 248-14 and IEC 60269-4 safety standards.

Applications

• Power converters and inverters
• Renewable energy systems (solar/wind)
• Motor drives and industrial automation
• Uninterruptible Power Supplies (UPS)
• Welding equipment and charging stations

Why Choose Bussmann?
Backed by Eaton’s legacy of electrical safety innovation, the FWJ series fuses offer unmatched reliability for critical infrastructure. The FWJ-70A combines precision interruption, compact size, and industry-leading certifications to ensure your equipment operates safely at peak efficiency.

Note: Always verify compatibility with specific system requirements before installation.