Why Choose the Mersen NH3UD69V315PV Protistor® High-Speed Fuse?
The Mersen NH3UD69V315PV is a premium NH Size 3 high-speed semiconductor fuse from the trusted Mersen Protistor® range, engineered to provide ultra-fast protection for modern power electronic equipment. Designed specifically for semiconductor protection, this aR class fuse safeguards IGBTs, thyristors, diodes, GTOs and rectifiers against damaging short-circuit currents while ensuring dependable system performance.
Manufactured in accordance with DIN NH standards, the NH3UD69V315PV offers worldwide compatibility with NH modular fuse systems, fuse switch disconnectors and industrial power equipment. It features pure silver fuse elements embedded in solidified sand, silver-plated contact blades and a double visual indicator to provide exceptional current limiting and simplified maintenance.
With a 315 A current rating and a 690 V AC IEC / 700 V AC UL voltage rating, this fuse is ideally suited to variable frequency drives, industrial inverters, UPS systems, power converters and renewable energy installations where rapid semiconductor protection is essential.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 315 A rated current for demanding industrial applications.
- 690 V AC IEC / 700 V AC UL voltage rating.
- Excellent current-limiting performance with low let-through energy.
- High 170 kA breaking capacity.
- Double visual indicator simplifies inspection and maintenance.
- Compatible with standard NH Size 3 fuse systems.
Key Features
- Mersen Protistor® semiconductor protection fuse.
- Catalogue number: NH3UD69V315PV.
- Item number: F320579.
- NH Size 3 square body construction.
- aR utilisation category.
- 315 A rated current.
- 690 V AC IEC / 700 V AC UL rating.
- Double visual operating indicator.
- Silver-plated plain blade contacts.
- Pure silver fuse elements for optimum semiconductor protection.
Reliable Protection for Industrial Power Electronics
High-speed semiconductor fuses respond significantly faster than conventional industrial fuses, limiting fault current before sensitive electronic components can be damaged. This helps reduce repair costs, minimise downtime and extend the service life of expensive power conversion equipment.
The Mersen NH3UD69V315PV has been engineered specifically for modern power electronics, delivering low I²t characteristics and high interrupting capacity for reliable protection of industrial drives, converters and automation systems.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- Power converters and rectifiers.
- Industrial inverters.
- UPS systems.
- Renewable energy power conversion equipment.
- Industrial automation systems.
- OEM power electronic equipment.
