Why Choose the Mersen NH1UD69V125PV Protistor® High-Speed Fuse?
The Mersen NH1UD69V125PV is a high-performance NH Size 1 high-speed semiconductor protection fuse from the proven Mersen Protistor® range. Designed specifically to protect sensitive semiconductor devices, it provides rapid short-circuit protection for IGBTs, thyristors, GTOs, diodes and other power electronic components used in demanding industrial applications.
Engineered for today's power conversion equipment, the NH1UD69V125PV features pure silver fuse elements embedded in solidified sand, silver-plated contact blades and a non-magnetic construction. These design features deliver low let-through energy, excellent arc control and dependable protection for valuable semiconductor equipment. A built-in double indicator also simplifies maintenance and fuse replacement.
With a 125 A current rating, 690 V AC IEC / 700 V AC UL voltage rating and 170 kA breaking capacity, this Protistor® fuse is ideal for variable speed drives, UPS systems, industrial converters, rectifiers and renewable energy installations requiring reliable semiconductor protection.
Key Advantages
- High-speed aR semiconductor protection fuse.
- 125 A current rating for industrial power electronics.
- 690 V AC IEC / 700 V AC UL voltage rating.
- Protects IGBTs, thyristors, GTOs and power diodes.
- 170 kA breaking capacity for dependable fault interruption.
- Integrated double visual indicator for simplified maintenance.
Key Features
- Mersen Protistor® NH aR series.
- NH Size 1 square body fuse.
- 125 A rated current.
- 690 V AC IEC / 700 V AC UL rated voltage.
- aR ultra-fast operating characteristic.
- Double indicator with plain blade terminals.
- Silver-plated contacts and pure silver fuse elements.
- Designed for industrial semiconductor protection.
Reliable Protection for Industrial Power Electronics
The Mersen NH1UD69V125PV is engineered to interrupt damaging fault currents before sensitive semiconductor devices can be affected. Its low let-through energy characteristics help reduce thermal stress while extending the operational life of expensive industrial power electronic equipment.
Protistor® semiconductor fuses are widely used by OEM manufacturers, panel builders and electrical engineers for protecting industrial drives, converters and power control systems where rapid fault clearance is essential for reliable operation.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- Power converters and rectifiers.
- UPS systems.
- Renewable energy inverters.
- Industrial automation and power control equipment.
