The FWH-300A is a high-speed fuse designed for the protection of sensitive power semiconductors such as IGBTs, SCRs, diodes, and similar components in DC and AC power systems. It delivers extremely fast fault clearing and limits damaging energy during overcurrent events.
- Current Rating: 300 A
- Voltage Rating: 500 V AC / 500 V DC
- Interrupting Rating: 200 kA (AC), 50 kA (DC)
- Fuse Type: High-speed, fast-acting (non-time-delay)
- Mounting Style: Bolt-on (stud type)
- Body Type: Cylindrical with blade terminals
- Body Dimensions: Approximately 38 mm diameter × 110 mm length
- Construction: Ceramic body for excellent thermal and arc resistance
- Melting I²t (at rated current): Approximately 9,800 A²s
- Arc Voltage: Low, reduces energy stress on equipment
- Indicator: Non-indicating (requires external fuse monitoring if needed)
