Why Choose the Mersen NH000UD69V125PV Protistor® High Speed Fuse?
The Mersen NH000UD69V125PV is a Protistor® high speed semiconductor fuse engineered to provide exceptional protection for modern power electronic equipment. Specifically designed for safeguarding IGBTs, thyristors, diodes and rectifier assemblies, it delivers ultra-fast fault interruption with low energy let-through, helping to minimise damage to valuable semiconductor devices.
Manufactured in the standard NH Size 000 format, this square body fuse complies with DIN NH system requirements for worldwide compatibility with NH fuse holders and fuse switch disconnectors. Pure silver fuse elements embedded in solidified silica sand provide excellent current limitation, low I²t values and dependable interrupting performance.
With a 125 A current rating, 690 V AC IEC / 700 V AC UL voltage rating and an aR operating characteristic, the NH000UD69V125PV is ideally suited for variable frequency drives, industrial inverters, UPS systems, renewable energy converters and other semiconductor-based equipment requiring rapid short-circuit protection.
Key Advantages
- Ultra-fast protection for sensitive semiconductor devices.
- 125 A rated current for industrial power electronic applications.
- 690 V AC IEC / 700 V AC UL voltage rating.
- aR operating characteristic for semiconductor short-circuit protection.
- 80 kA AC breaking capacity.
- Double visual indicator simplifies inspection and maintenance.
Key Features
- Mersen Protistor® high speed semiconductor fuse.
- Manufacturer part number: NH000UD69V125PV.
- NH Size 000 square body construction.
- 125 A rated current.
- 690 V AC IEC / 700 V AC UL.
- aR operating characteristic.
- Plain blade terminals.
- Double visual operation indicator.
- Silver-plated contacts.
- Pure silver fuse elements for low energy let-through.
Designed for High-Speed Semiconductor Protection
The Mersen NH000UD69V125PV is engineered to protect expensive semiconductor devices against destructive short-circuit currents. Its low I²t performance reduces thermal and mechanical stress on IGBTs, thyristors and diodes, helping maximise equipment reliability while reducing costly downtime.
Its aR operating characteristic provides partial-range semiconductor protection and should be used alongside suitable overload protection where required by the equipment design.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial inverters.
- Power converters.
- Rectifier equipment.
- UPS systems.
- Renewable energy power conversion equipment.
- Motor drive systems.
- Semiconductor protection circuits.
