Why Choose the Mersen NH2UD69V630PV High-Speed Fuse?
The Mersen NH2UD69V630PV is a high-performance NH size 2 high-speed fuse link designed to protect power semiconductor devices and industrial power electronic equipment against damaging short-circuit currents. Manufactured by Mersen, it provides rapid fault interruption and effective current limitation for demanding motor-control, power conversion and automation applications.
Its ultra-fast operating characteristics help minimise peak fault current and reduce the let-through energy reaching sensitive downstream components. This is particularly important in circuits containing diodes, thyristors, rectifiers, insulated-gate bipolar transistors and other semiconductor devices that can be damaged by brief, high-energy fault conditions.
With a rated current of 630 A and a rated voltage of up to 690 V AC, the NH2UD69V630PV is suitable for high-power variable frequency drives, industrial inverters, rectifiers and power converters. Its standard NH2 blade-contact format enables secure installation in compatible NH fuse bases and switch-disconnector assemblies.
Key Advantages
- High-speed fuse link designed for semiconductor protection.
- 630 A rated current for high-power industrial circuits.
- 690 V AC rated voltage suitable for demanding electrical systems.
- Rapid fault interruption helps protect sensitive semiconductor components.
- Low let-through energy reduces thermal and mechanical stress during faults.
- Standard NH size 2 blade-contact construction for reliable installation.
Key Features
- Mersen high-speed semiconductor fuse link.
- 630 A rated current.
- 690 V AC rated voltage.
- NH size 2 body format.
- Fast operating characteristics for power semiconductor protection.
- High current-limiting capability during short-circuit conditions.
- NH blade contacts for compatible fuse bases and disconnectors.
- Suitable for industrial drives, converters and power electronic equipment.
Reliable Protection for Power Semiconductor Equipment
High-speed fuse links such as the Mersen NH2UD69V630PV are engineered to interrupt severe fault currents more rapidly than conventional general-purpose fuse links. Their fast response limits the amount of electrical energy that reaches sensitive downstream components during a short circuit.
This current-limiting performance is particularly valuable in variable frequency drives, rectifiers, inverters and other power electronic systems where semiconductor devices can fail following even a brief overcurrent event. Correct fuse selection helps improve equipment reliability, reduce unplanned downtime and minimise the risk of costly component damage.
Typical Applications
- Variable frequency drives and industrial motor controllers.
- High-power inverters and converter systems.
- Industrial rectifiers and semiconductor assemblies.
- Uninterruptible power supplies.
- Power electronic control equipment.
- Industrial automation and distribution panels.
