Why Choose the Mersen NH2UD69V500PV Protistor® High-Speed Fuse?
The Mersen NH2UD69V500PV is a high-performance NH Size 2 high-speed semiconductor fuse engineered to provide rapid short-circuit protection for sensitive power electronic equipment. Part of the established Mersen Protistor® range, it is designed to limit peak fault current and let-through energy before costly semiconductor components can be damaged.
Its aR utilisation category makes the NH2UD69V500PV particularly suitable for protecting IGBTs, thyristors, diodes, rectifiers and other power semiconductor devices. The fuse features a robust ceramic square body, blade contacts and visual fuse-status indication for dependable performance and straightforward maintenance in demanding industrial environments.
With a rated current of 500 A and voltage ratings of 690 V AC to IEC requirements and 700 V AC to UL requirements, this fuse is well suited to high-power variable frequency drives, industrial converters, UPS systems and renewable energy equipment. Its standard NH Size 2 format enables installation in a correctly rated compatible fuse base or switch-disconnector.
Key Advantages
- Ultra-fast aR fuse designed for semiconductor protection.
- 500 A rated current for high-power industrial applications.
- 690 V AC IEC and 700 V AC UL ratings.
- Low let-through energy helps minimise semiconductor damage.
- Excellent current-limiting performance during short-circuit faults.
- Visual indication supports efficient inspection and maintenance.
- Standard NH Size 2 format for compatible fuse systems.
Key Features
- Mersen Protistor® high-speed fuse series.
- NH2UD69V500PV product reference.
- 500 A rated current.
- 690 V AC IEC rated voltage.
- 700 V AC UL rated voltage.
- aR partial-range utilisation category.
- NH Size 2 square-body construction.
- Designed specifically for power semiconductor protection.
- Low I²t characteristics for reduced fault energy.
- Blade contacts for compatible NH fuse holders.
Reliable Protection for High-Power Electronics
Power semiconductor devices can be damaged by fault energy before conventional industrial fuses have time to operate. High-speed fuses such as the Mersen NH2UD69V500PV interrupt short-circuit currents rapidly, helping reduce thermal and electrical stress on sensitive components.
The fuse's aR operating characteristics make it suitable for short-circuit protection of semiconductor equipment. Appropriate separate overload protection should be incorporated where required by the equipment design and applicable electrical standards.
Typical Applications
- High-power variable frequency drives.
- Industrial motor drives and soft starters.
- Power converters and rectifier systems.
- Uninterruptible power supply equipment.
- Industrial inverters.
- Renewable energy conversion systems.
- Battery energy storage equipment.
- OEM power electronic machinery.
