Why Choose the Mersen NH3GS69V450PV Protistor® High-Speed Fuse?
The Mersen NH3GS69V450PV (Item Number L322585) is a premium Protistor® NH Size 3 gS high-speed semiconductor fuse designed to provide full-range protection for today's advanced power electronic equipment. Rated at 450 A with voltage ratings of 690 V AC (IEC) and 700 V AC (UL), it protects semiconductor devices and associated circuits against both overloads and short-circuit faults.
Manufactured to DIN NH standards, the NH3GS69V450PV incorporates precision die-cut pure silver fuse elements embedded in solidified silica sand to achieve exceptional current limitation, low let-through energy and a high breaking capacity. Silver-plated contacts and non-magnetic hardware ensure reliable long-term performance in demanding industrial applications.
The fuse features a double visual indicator for rapid status identification and integrates seamlessly into NH modular fuse holders and switch disconnectors. It is ideally suited to industrial drives, UPS systems, renewable energy installations, rectifiers and power conversion equipment where reliable semiconductor protection is critical.
Key Advantages
- Full-range gS semiconductor protection.
- 450 A rated current for high-power industrial applications.
- 690 V AC IEC / 700 V AC UL voltage rating.
- Protects both semiconductor devices and associated wiring.
- Very low I²t reduces stress on sensitive electronic components.
- Double indicator enables rapid maintenance and fault identification.
Key Features
- Mersen Protistor® NH3GS69V450PV.
- Item number L322585.
- NH Size 3 square-body fuse.
- 450 A nominal current rating.
- 690 V AC IEC / 700 V AC UL.
- gS utilisation category.
- Double visual indicator.
- Silver-plated blade contacts.
- Pure silver fuse elements.
- Solidified silica sand filling.
- Non-magnetic construction.
Designed for Complete Semiconductor Protection
Protistor® gS semiconductor fuses provide full-range protection by clearing both overload and short-circuit faults. Their fast operating characteristics significantly reduce thermal and mechanical stress on power semiconductor devices, helping maximise equipment reliability while reducing maintenance costs and downtime.
The NH3GS69V450PV is fully compatible with NH modular fuse holders and fuse switch disconnectors manufactured to DIN standards. Its double visual indicator enables quick identification of operated fuse links, simplifying maintenance in demanding industrial installations.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial power converters.
- Renewable energy inverter systems.
- UPS systems.
- Motor drives and servo systems.
- Industrial rectifiers.
- Protection of IGBTs, thyristors, GTOs and diode modules.
- Heavy-duty power conversion equipment.
