Why Choose the Mersen W300008 Protistor® Fuse?
The Mersen W300008 is a high-performance Protistor® ultra-fast semiconductor fuse engineered to provide exceptional protection for sensitive power electronic equipment. Designed for demanding industrial applications, this square body fuse delivers rapid fault interruption to safeguard semiconductor devices such as IGBTs, diodes, SCRs and inverter systems.
Manufactured by Mersen, a global leader in electrical protection solutions, the W300008 offers outstanding reliability, high breaking capacity and excellent current limiting performance. Its robust construction helps minimise equipment damage during short-circuit conditions while maximising system uptime and operational safety.
With a 630 A current rating, 690 V AC operating voltage and aR protection characteristic, the W300008 is ideally suited for protecting variable speed drives, UPS systems, industrial converters, motor drives and renewable energy power conversion equipment.
Key Advantages
- Ultra-fast Protistor® semiconductor protection fuse.
- 630 A current rating for demanding industrial applications.
- 690 V AC rated voltage for modern power systems.
- aR characteristic provides protection for semiconductor devices.
- High interrupting capacity for enhanced equipment safety.
- Reduces damage caused by short circuits and fault currents.
- Designed for industrial drives, converters and power electronics.
Key Features
- Manufacturer: Mersen
- Series: Protistor®
- Model: W300008 (PC31UD69V630TF)
- Square body semiconductor fuse.
- 630 A rated current.
- 690 V AC rated voltage.
- aR ultra-fast protection class.
- High-speed fault interruption.
- Suitable for protecting power semiconductor devices.
- Requires compatible fuse holder.
- Industrial-grade construction for demanding environments.
Reliable Protection for Power Electronics
Semiconductor fuses are specifically designed to protect high-value electronic power components by interrupting fault currents before excessive thermal energy can damage sensitive devices. Their ultra-fast operating characteristics help extend equipment life and reduce costly downtime.
The Mersen Protistor® range is widely trusted throughout industrial automation, renewable energy, transportation and power conversion industries where reliable semiconductor protection is essential for maintaining safe and efficient operation.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- Power converters.
- UPS systems.
- Renewable energy inverters.
- Soft starters.
- Industrial power supplies.
- Semiconductor protection circuits.
