Why Choose the Mersen NH1UD69V350PV Protistor® Semiconductor Fuse?
The Mersen NH1UD69V350PV is a high-speed NH Size 1 semiconductor fuse engineered to provide exceptional short-circuit protection for sensitive power semiconductor devices including IGBTs, thyristors, diodes and GTOs. As part of the renowned Mersen Protistor® high-speed fuse range, it delivers ultra-fast fault interruption and excellent current limiting performance for demanding industrial power conversion applications.
Designed to IEC and UL standards, this fuse features an aR operating characteristic, making it ideal for protecting semiconductor devices where rapid fault clearance is essential. Manufactured using pure silver fuse elements embedded in solidified silica sand, it offers low let-through energy, silver-plated contact surfaces and a high breaking capacity for maximum equipment protection.
With a rated current of 350 A, a 690 V AC IEC / 700 V AC UL voltage rating and a robust NH Size 1 square body design, the NH1UD69V350PV is ideally suited for variable frequency drives, UPS systems, industrial inverters, rectifiers and other power electronic equipment requiring dependable semiconductor protection.
Key Advantages
- High-speed Protistor® semiconductor protection fuse.
- 350 A rated current for industrial power electronics.
- 690 V AC IEC / 700 V AC UL voltage rating.
- aR operating characteristic for semiconductor protection.
- Excellent current limiting performance reduces fault energy.
- Double indicator system enables quick fuse status identification.
Key Features
- Mersen Protistor® high-speed fuse series.
- 350 A rated current.
- 690 V AC IEC / 700 V AC UL rated voltage.
- aR ultra-fast operating characteristic.
- NH Size 1 square body construction.
- Double visual indicator.
- Plain silver-plated blade contacts.
- Designed specifically for semiconductor protection.
Reliable Protection for Industrial Power Electronics
High-speed semiconductor fuses are specifically designed to interrupt high fault currents before expensive semiconductor devices can be damaged. The Mersen NH1UD69V350PV provides rapid fault interruption with exceptionally low let-through energy, helping maximise equipment reliability while reducing maintenance costs and unplanned downtime.
Its internationally recognised NH design ensures compatibility with NH modular fuse holders and fuse switch disconnectors, making it an excellent choice for modern industrial automation and power conversion systems.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial inverters and converters.
- UPS systems.
- Rectifiers and DC drives.
- Motor control equipment.
- OEM power electronic and automation systems.
