Bussmann FWJ-70A High Speed Fuse

SKU: D21160B4

$295.15

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Description

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
Technical Specifications Parameter Value
Current Rating 70A
Voltage Rating 700V DC
Breaking Capacity 200kA
Operating Temp -50°C to +125°C
Standards UL 248-14, IEC 60269-4
Dimensions 10.3mm x 38mm (Dia. x L)

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.

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Shipping and Returns
Returns are easy You may return items within 30 days of delivery for a refund. View our return policy FREE Shipping on orders over $49. Eaton Bussmann Fuse Relay Online Sales Store offers one to five day delivery in the United States. The variation depends on the chosen shipping speed and the warehouse location for the product(s). Same Day Shipping We strive to ship out your items within one business day. In rare circumstances, Eaton Bussmann Fuse Relay Online Sales Store may reserve up to 5 business days to complete shipment. Feel free to contact us if your order is time sensitive.
1-Year Warranty
Eaton Bussmann's fuses and relays for sale are brand new and come with a 1-year comprehensive warranty. Rest assured, all products are authentic OEM (original equipment manufacturer).