Why Choose the Mersen NH2UD69V450PV High-Speed Semiconductor Fuse?
The Mersen NH2UD69V450PV is a Protistor® NH Size 2 high-speed semiconductor fuse designed to protect sensitive power electronic equipment against damaging short-circuit currents. Its ultra-rapid aR operating characteristic provides fast current limitation for semiconductor devices such as diodes, thyristors, rectifiers, GTOs and IGBTs.
Designed for demanding industrial power-conversion systems, the NH2UD69V450PV uses a robust ceramic square body with high-performance fuse elements and NH blade contacts. This construction helps restrict peak fault current and let-through energy, reducing thermal and mechanical stress on valuable semiconductor components.
Rated at 450 A and 690 V AC, this NH Size 2 fuse is suitable for compatible NH fuse bases and fuse switch disconnectors. Its double visual indication assists engineers in identifying an operated fuse quickly during inspection and maintenance.
Key Advantages
- Protistor® aR high-speed semiconductor protection.
- 450 A rated current for high-power equipment.
- 690 V AC rated voltage.
- Rapid current limitation helps minimise semiconductor damage.
- Robust NH Size 2 industrial construction.
- Double visual indication supports efficient maintenance.
Key Features
- Mersen Protistor® semiconductor fuse.
- Catalogue reference NH2UD69V450PV.
- NH Size 2 square-body fuse format.
- 450 A rated current.
- 690 V AC rated voltage.
- aR operating class.
- Ultra-fast current-limiting operation.
- Double visual fuse indication.
- NH blade terminal configuration.
- Designed for industrial power electronic protection.
Reliable Protection for High-Power Electronics
Power semiconductor devices can sustain permanent damage within milliseconds when exposed to excessive fault energy. The Mersen NH2UD69V450PV is engineered to interrupt serious short-circuit currents rapidly, helping reduce the peak current and thermal energy transferred to connected electronic components.
Because the fuse has an aR utilisation category, it is primarily intended for semiconductor short-circuit protection. Suitable overload protection may also be required, depending on the circuit design, operating conditions and recommendations of the equipment manufacturer.
Typical Applications
- Variable frequency drives and high-power motor drives.
- Industrial inverters.
- Power converters and rectifier systems.
- Uninterruptible power supply systems.
- Battery chargers and industrial power supplies.
- Renewable energy conversion equipment.
- Industrial automation and control panels.
- High-power semiconductor protection circuits.
