Why Choose the Mersen R330111 High-Speed Semiconductor Fuse?
The Mersen R330111 is a premium Protistor® NH Size 000 high-speed semiconductor fuse engineered to provide full-range protection for sensitive power semiconductor devices. Manufactured by Mersen, this fuse is specifically designed to protect IGBTs, thyristors, diodes and other semiconductor components used in industrial power conversion equipment. It forms part of the trusted 6.9 gRB D08V series and is optimised for demanding industrial environments.
The R330111 combines low energy let-through characteristics with a high interrupting capacity to minimise damage during electrical faults. Manufactured using pure silver fuse elements embedded in solidified sand with silver-plated contacts, it delivers dependable electrical performance and helps maximise equipment uptime.
With a 125 A current rating and a 690 V AC operating voltage, the R330111 is ideal for protecting variable frequency drives, inverters, converters, UPS systems and industrial motor control equipment.
Key Advantages
- High-speed gRB semiconductor fuse providing full-range protection.
- 125 A current rating for industrial power electronics.
- 690 V AC rated voltage.
- 200 kA breaking capacity for exceptional fault interruption.
- Visual blown fuse indicator for simplified maintenance.
- Low I²t performance helps protect valuable semiconductor devices.
Key Features
- Mersen Protistor® 6.9 gRB D08V series.
- 125 A rated current.
- 690 V AC operating voltage.
- gRB full-range semiconductor protection.
- NH Size 000 square body construction.
- DIN 80 blade terminals.
- Integrated blown fuse indicator.
- Silver-plated contacts with pure silver fuse elements.
Reliable Protection for Industrial Power Electronics
High-speed semiconductor fuses interrupt fault currents before they can damage sensitive power electronic components. Their low I²t characteristics significantly reduce thermal and mechanical stress, helping to extend equipment life and reduce costly downtime.
The Mersen Protistor® range is widely used by OEMs, panel builders and industrial engineers for protecting variable speed drives, converters, UPS systems and renewable energy installations requiring dependable semiconductor protection.
Typical Applications
- Variable frequency drives.
- Industrial motor drives.
- Power converters and inverters.
- UPS systems.
- Renewable energy power conversion systems.
- Industrial automation and control panels.
