Why Choose the Mersen E330031 Protistor® High-Speed Fuse?
The Mersen E330031 is a high-performance 8 × 31 mm cylindrical high-speed semiconductor fuse from the trusted Mersen Protistor® range. Specifically engineered to protect sensitive semiconductor devices, this fuse delivers rapid fault interruption for power electronic equipment including inverters, converters, motor drives and industrial control systems.
Manufactured using advanced fuse technology, the E330031 features low let-through energy and excellent current-limiting characteristics to help minimise damage to expensive power semiconductors during short-circuit conditions. Its compact cylindrical design allows easy installation in compatible fuse holders while maintaining dependable protection in demanding industrial applications.
With a 25 A current rating and a 690 V AC voltage rating, the E330031 is ideal for protecting IGBTs, diodes, thyristors and rectifiers in modern power conversion equipment where fast and reliable semiconductor protection is essential.
Key Advantages
- High-speed gRB semiconductor protection fuse.
- 25 A rated current for industrial power electronics.
- 690 V AC rated voltage.
- Compact 8 × 31 mm cylindrical format.
- Excellent current-limiting performance.
- Low I²t helps protect sensitive semiconductor devices.
- Suitable for industrial automation and power conversion equipment.
Key Features
- Mersen Protistor® semiconductor fuse.
- Model: E330031.
- 25 A rated current.
- 690 V AC rated voltage.
- gRB utilisation category.
- 8 × 31 mm cylindrical construction.
- Ultra-fast semiconductor protection.
- High interrupting capacity.
- Designed for industrial power electronics.
- Reliable performance under demanding operating conditions.
Reliable Protection for Industrial Electronics
High-speed semiconductor fuses provide significantly faster fault clearance than conventional industrial fuses, limiting fault current before sensitive electronic components can be damaged. The Mersen Protistor® range is designed specifically for protecting power semiconductors used in modern industrial automation and energy conversion equipment.
The E330031 delivers dependable protection for industrial power systems while helping reduce equipment downtime and maintenance costs by minimising damage caused by electrical faults.
Typical Applications
- Variable frequency drives.
- Industrial inverters.
- Power converters.
- UPS systems.
- Motor drives.
- Rectifiers.
- Industrial automation equipment.
- OEM power electronic systems.
