The FWH-250A is a high-speed fuse rated at 250 amps, specifically designed to protect semiconductors such as IGBTs, SCRs, and diodes. It provides an ultra-fast response to overcurrents, minimising let-through energy and protecting sensitive electronic components in high-performance AC and DC systems.
- Current Rating: 250 A
- Voltage Rating: 500 V AC / 500 V DC
- Interrupting Rating: 200,000 A (AC), 50,000 A (DC)
- Fuse Type: High-speed, fast-acting, single-element
- Body Style: Cylindrical cartridge with bolt-on blade terminals
- Mounting Method: Stud type
- Body Dimensions: Approx. 38 mm diameter × 110 mm length
- Construction: Ceramic or fiberglass body for high arc resistance
- Melting I²t (typical): Approx. 6,300 A²s (pre-arcing)
- Indicator: Non-indicating (external detection required)
