Why Choose the Mersen NH00UD69V250PV High-Speed Semiconductor Fuse?
The Mersen NH00UD69V250PV is a robust Protistor® NH size 00 high-speed semiconductor fuse designed to protect sensitive power electronic equipment against damaging short-circuit currents. Manufactured by Mersen, it provides rapid fault interruption for semiconductor devices such as diodes, thyristors and IGBT modules used in industrial power conversion and motor-control systems.
As part of the established Mersen Protistor® NH aR fuse range, the NH00UD69V250PV combines low energy let-through with dependable electrical performance. Its square ceramic body, NH blade contacts and visual indication system support straightforward installation and efficient maintenance in demanding industrial environments.
With a rated current of 250 A and an operating voltage of up to 690 V AC, the NH00UD69V250PV is suitable for variable frequency drives, rectifiers, inverters, UPS equipment and other power electronic systems requiring fast and reliable semiconductor protection.
Key Advantages
- High-speed aR fuse designed for semiconductor protection.
- 250 A rated current for demanding power electronic applications.
- 690 V AC voltage rating for industrial electrical systems.
- Low energy let-through helps limit damage to sensitive components.
- Visual indication assists with fuse-status checks and maintenance.
- Standard NH blade format enables secure installation in compatible fuse bases.
Key Features
- Mersen Protistor® high-speed fuse range.
- 250 A rated current.
- 690 V AC rated voltage.
- aR utilisation category for short-circuit protection of semiconductor devices.
- NH size 00 square-body construction.
- Plain NH blade contacts.
- Visual fuse-status indication.
- Designed for low I²t and rapid fault-clearing performance.
Reliable Protection for Industrial Power Electronics
High-speed semiconductor fuses interrupt severe fault currents more rapidly than conventional industrial fuses. Their low I²t performance helps reduce the thermal and electrical energy reaching sensitive semiconductor components, limiting equipment damage and supporting improved system availability.
The Mersen Protistor® range is developed for power electronic installations where rapid fault clearance is essential. The NH00UD69V250PV can be incorporated into coordinated protection systems for drives, converters and industrial power supplies, helping protect valuable equipment and minimise unplanned downtime.
Typical Applications
- Variable frequency drives and industrial motor drives.
- Power converters, rectifiers and inverters.
- Uninterruptible power supply systems.
- Industrial power supplies and control equipment.
- Renewable energy power-conversion systems.
- Semiconductor assemblies using diodes, thyristors or IGBT modules.
