Why Choose the Mersen NH3GS69V350PV Protistor® High-Speed Fuse?
The Mersen NH3GS69V350PV is a premium NH Size 3 high-speed semiconductor fuse from the Mersen Protistor® gS series, developed to provide comprehensive protection for modern power electronic equipment. Featuring a 350 A current rating and 690 V AC IEC / 700 V AC UL voltage ratings, it delivers full-range protection for semiconductor circuits in demanding industrial applications.
Unlike partial-range aR fuses, the gS utilisation category provides both overload and short-circuit protection while maintaining the ultra-fast operating characteristics required to protect sensitive semiconductor devices including IGBTs, thyristors, diodes and rectifiers. The fuse is manufactured with pure silver fuse elements embedded in solidified sand, silver-plated contacts and a double visual indicator for dependable operation and simplified maintenance.
Designed to DIN NH standards, the NH3GS69V350PV is compatible with standard NH Size 3 fuse systems, fuse switch disconnectors and modular fuse holders, making it an excellent choice for industrial drives, UPS systems, renewable energy equipment and power conversion systems.
Key Advantages
- Full-range gS semiconductor protection.
- 350 A rated current.
- 690 V AC IEC / 700 V AC UL ratings.
- Protects against both overloads and short circuits.
- Ultra-fast current limiting reduces damage to semiconductor devices.
- Double visual indicator for rapid fuse status identification.
- Compatible with standard NH Size 3 fuse systems.
Key Features
- Mersen Protistor® gS semiconductor fuse.
- Catalogue number: NH3GS69V350PV.
- Item number: F322580.
- NH Size 3 square-body construction.
- 350 A current rating.
- 690 V AC IEC / 700 V AC UL.
- Double visual indicator.
- Silver-plated blade contacts.
- Pure silver fuse elements.
- Suitable for industrial semiconductor protection.
Advanced Full-Range Semiconductor Protection
Power semiconductor devices require protection that responds rapidly to fault conditions while also providing dependable overload protection. The Mersen NH3GS69V350PV combines high-speed current limiting with full-range gS characteristics, helping minimise thermal and electrical stress on expensive power electronic components.
Its robust construction, high interrupting capacity and low I²t values make it particularly suitable for industrial environments where equipment availability and long service life are essential.
Typical Applications
- Variable frequency drives.
- Industrial motor drives.
- Power converters.
- Industrial rectifiers.
- UPS systems.
- Renewable energy inverters.
- Battery energy storage systems.
- OEM power electronic equipment.
