Product Description
The FWH-300A is a high-speed semiconductor protection fuse designed for high-power industrial and power electronic applications. It provides extremely fast fault interruption for protecting rectifiers, drives, UPS systems, and DC power circuits. This fuse is engineered for high interrupting capacity and reliable protection in critical electrical systems where fast response is essential.
Key Features
- High-speed semiconductor protection fuse
- Fast-acting response for fault protection
- High interrupting capacity for power electronics
- Cylindrical cartridge / stud-mount design
- Low I²t energy let-through for sensitive components
- Suitable for AC and DC applications
- Robust construction for industrial environments
- Reliable protection for drives and converters
- Compact design for panel integration
- Maintenance-free one-time operation
Specifications
- Product Type: High-Speed Semiconductor Fuse
- Model: FWH-300A
- Brand: Eaton Bussmann
- Fuse Class: Semiconductor High-Speed Fuse
- Rated Current: 300A
- Rated Voltage: 500V AC / 500V DC (up to 800V–1000V depending application variant)
- Interrupting Rating: Up to 200 kA AC / 50 kA DC
- Response Type: Fast Acting (High-Speed)
- Mounting Type: Stud / Bolt mount
- Body Type: Cylindrical cartridge / square body variant
- Power Loss: Approx. 51W at rated current
- Size: Approx. 38.1 mm × 53 mm (1.5″ × 2.09″)

