Bussmann FWJ-350A High Speed Fuse

SKU: 9C2A3B5D

$773.52

71 People watching this product now!
Fast Shipping

FREE & fast shipping on orders over $49

20k products

All payment methods, Secure transaction

24/7 Support

Unlimited help desk, 1 year warranty

Ships within 1 day

Track or off orders, 30 day returns

Description

Bussmann FWJ-350A High Speed Fuse

Precision Protection for Demanding Electronic Circuits

Overview

The Bussmann FWJ-350A High Speed Fuse is engineered to provide ultra-rapid overcurrent protection in high-energy DC and AC systems. Designed for critical applications requiring minimal let-through energy, this fuse safeguards sensitive semiconductors, rectifiers, and power electronics from damaging short-circuit events. Ideal for industrial automation, renewable energy systems, and transportation infrastructure.

Key Features

  • Ultra-Fast Response: Clears faults in milliseconds (≤1 ms under rated conditions) to prevent equipment damage.
  • High Breaking Capacity: 200 kA interruption rating at 700V DC/500V AC ensures reliable protection in high-power circuits.
  • Low I²t Value: Minimizes thermal stress on protected components, extending system lifespan.
  • Compact Cylindrical Design: Space-saving 10.3mm x 38mm form factor (10x38mm) with bolted end caps for secure connections.
  • Robust Construction: Ceramic body with sand-filled arc quenching for stable performance in harsh environments (-55°C to +125°C).

Technical Specifications

Parameter Value
Current Rating 350A
Voltage Rating 700V DC / 500V AC
Breaking Capacity 200 kA
Time-Current Ultra-Fast Acting (Class J)
Dimensions 10.3mm Ø × 38mm L
Terminals Silver-plated copper end caps
Certifications UL 248-14, IEC 60269-4

Applications

  • Solar inverters and wind turbine converters
  • EV charging stations and battery management systems
  • Industrial motor drives and UPS systems
  • Railway traction and mining equipment
  • Power supply units and capacitor banks

Why Choose FWJ-350A?

Bussmann’s proprietary fuse technology ensures zero nuisance tripping during inrush currents while delivering deterministic protection against catastrophic faults. Backed by Eaton’s global support network, this fuse combines cutting-edge safety with industrial durability—reducing downtime and repair costs in mission-critical installations.

Engineered for reliability. Trusted worldwide.

*Note: Specifications subject to change; refer to official datasheets for design validation.*
Reviews (0)
0 reviews
0
0
0
0
0

There are no reviews yet.

Be the first to review “Bussmann FWJ-350A High Speed Fuse”
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).