Why Choose the Mersen NH3UD69V630PV High-Speed Semiconductor Fuse?
The Mersen NH3UD69V630PV is a premium Protistor® NH Size 3 high-speed semiconductor fuse engineered to deliver rapid and dependable protection for sensitive power semiconductor devices. Designed by Mersen, this fuse safeguards IGBTs, thyristors, diodes and other power electronic components against damaging short-circuit currents in demanding industrial environments.
As part of the trusted Mersen Protistor® NH aR series, the NH3UD69V630PV combines ultra-fast fault interruption with high breaking capacity to maximise equipment protection while minimising downtime. Constructed with pure silver fuse elements embedded in solidified sand and finished with silver-plated contacts, it offers low I²t performance and exceptional electrical reliability.
With a rated current of 630 A and a 690 V AC IEC / 700 V AC UL voltage rating, the NH3UD69V630PV is ideally suited to variable frequency drives, power converters, UPS systems, renewable energy installations and industrial motor control applications.
Key Advantages
- High-speed aR semiconductor fuse for critical power electronics.
- 630 A current rating for high-power industrial equipment.
- 690 V AC IEC / 700 V AC UL voltage rating.
- 170 kA breaking capacity for excellent fault protection.
- Double visual indicator simplifies maintenance.
- Low I²t characteristics help protect expensive semiconductor devices.
Key Features
- Mersen Protistor® NH Size 3 series.
- 630 A rated current.
- 690 V AC IEC / 700 V AC UL.
- aR ultra-fast operating characteristic.
- NH Size 3 square body construction.
- Plain blade terminals.
- Double visual indicator.
- Silver-plated contacts and pure silver fuse elements.
Reliable Protection for Industrial Power Electronics
High-speed semiconductor fuses are specifically designed to clear short-circuit faults before sensitive semiconductor devices can be damaged. Their low energy let-through characteristics reduce thermal stress and help extend the service life of costly power electronic equipment.
The Mersen Protistor® NH range is trusted worldwide by OEMs and industrial engineers for protecting variable speed drives, converters, rectifiers, UPS systems and renewable energy equipment where reliable semiconductor protection is essential.
Typical Applications
- Variable frequency drives.
- Industrial motor control systems.
- Power converters and inverters.
- UPS systems.
- Renewable energy power conversion equipment.
- Industrial automation and power distribution panels.
